Re: [PATCH 2/2] mmc:sdhci-bayhub:provide a solution to improve sd host card compatibility

From: Ulf Hansson
Date: Fri Jan 21 2022 - 10:38:40 EST

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In reply to: Chevron Li: "[PATCH 2/2] mmc:sdhci-bayhub:provide a solution to improve sd host card compatibility"
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On Fri, 21 Jan 2022 at 12:09, Chevron Li <chevron.li@xxxxxxxxxxxxxx> wrote:
>
> Improve the signal integrity for long SD bus trace with GGC SD host redriver chip
> 1.GGC is a SD bus signal re-timing IC that has been paired with the SC7180 sometimes.
> 2.The key points as below:
> 2.1 GGC chip is initialized during SD initialization
> 2.2 GGC special tuning flow is used to re-timing SD bus signal.
> 2.3 GGC power signal control should follow sd host power signal control.
> 3.The function of the patch is already verified on Chrome OS, and Google request us to submit the patch to Linux for them future use.
> 4.GGC can work with any other standard SDHCI controller to improve SD signal SI and Timing.
> 5.GGC has cooperated with Intel/Qualcomm/MTK/SPRD sd host already and work well.
> 6.This file is created for collecting the GGC chip support APIs and variables
> This patch depends on patch:
> mmc:sdhci-msm:fix Qualcomm sd host 7180 SD card compatibility issue
>
> Signed-off-by: Chevron Li <chevron.li@xxxxxxxxxxxxxx>
> ---
> Changes:
> 1.Implement the sdhci_bht_host structure
> 2.Implement the functions used at sdhci-msm.c
> ---
> drivers/mmc/host/sdhci-bayhub.c | 3374 ++++++++++++++++++++++++++++++-
> 1 file changed, 3370 insertions(+), 4 deletions(-)

It didn't sounded like you needed an entirely new driver to support to
this, according to what you stated in the commit message at least? Or
maybe this isn't a driver?

In any case, I am not sure I am willing to spend time to review a
patch with 3370 inserted lines, without first getting a better
understanding of what this really is.

>
> diff --git a/drivers/mmc/host/sdhci-bayhub.c b/drivers/mmc/host/sdhci-bayhub.c
> index 867d465ce848..622c4c05b2e4 100644
> --- a/drivers/mmc/host/sdhci-bayhub.c
> +++ b/drivers/mmc/host/sdhci-bayhub.c
> @@ -5,30 +5,3396 @@
> *
> * Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
> */
> +#include <linux/of_gpio.h>
> +#include "../core/sdio_ops.h"
> +#include "../core/sd.c"
> +#include "../core/pwrseq.h"

No, this is hack. Host drivers should not use core headers like this.

> +
> +#define SD_FNC_AM_SDR50 0x2
> +#define SD_FNC_AM_SDR104 0x3
> +#define BIT_PASS_MASK (0x7ff)
> +#define SDR104_MANUAL_INJECT 0x3ff
> +#define SDR50_MANUAL_INJECT 0x77f
> +
> +#define TUNING_RING_IDX(x) ((x) % TUNING_PHASE_SIZE)
> +#define GET_IDX_VALUE(tb, x) (tb & (1 << (x)))
> +#define GENERATE_IDX_VALUE(x) (1 << (x))
> +#define GET_TUNING_RING_IDX_VALUE(tb, x) \
> + (tb & (1 << TUNING_RING_IDX(x)))
> +#define GENERATE_TUNING_RING_IDX_VALUE(x) \
> + (1 << TUNING_RING_IDX(x))
> +#define MAX_CFG_BIT_VAL (383)
> +
> +/*
> + * This part define the GGC used structure
> + * The GGC chip can work with standard SD host controller
> + * GGC is the chip IC name and it's a SD bus signal re-timing IC
> + * Aim at high-speed SD mode(ex.SDR104) and long wire of SD signals
> + */
> +#define TUNING_PHASE_SIZE 11
> +static const u32 ggc_cfg_data[16] = {
> + 0x07000000, 0x07364022, 0x01015412, 0x01062400,
> + 0x10400076, 0x00025432, 0x01046076, 0x62011000,
> + 0x30503106, 0x64141711, 0x10057513, 0x00336200,
> + 0x00020006, 0x40000400, 0x12200310, 0x3A314177
> +};
> +
> +struct ggc_bus_mode_cfg {
> + u32 tx_selb_tb[TUNING_PHASE_SIZE];
> + u32 all_selb_tb[TUNING_PHASE_SIZE];
> + u32 tx_selb_failed_history;
> + int bus_mode;
> + int default_sela;
> + int default_selb;
> + u32 default_delaycode;
> + u32 dll_voltage_unlock_cnt[4];
> + u32 max_delaycode;
> + u32 min_delaycode;
> + u32 delaycode_narrowdown_index;
> + u32 fail_phase;
> +};
> +
> +enum tuning_state {
> + NO_TUNING = 0,
> + OUTPUT_PASS_TYPE = 1,
> + SET_PHASE_FAIL_TYPE = 2,
> + TUNING_FAIL_TYPE = 3,
> + READ_STATUS_FAIL_TYPE = 4,
> + TUNING_CMD7_TIMEOUT = 5,
> + RETUNING_CASE = 6,
> +};
> +
> +
> +struct ggc_reg_op {
> + u32 ofs;
> + u32 mask;
> + u32 value;
> +};
> +
> +static const char *const op_dbg_str[] = {
> + "no tuning",
> + "pass",
> + "set_phase_fail",
> + "tuning fail",
> + "read status fail",
> + "tuning CMD7 timeout",
> + "retuning case"
> +};
>
> struct sdhci_bht_host {
> + struct ggc_bus_mode_cfg sdr50;
> + struct ggc_bus_mode_cfg sdr104;
> + struct ggc_bus_mode_cfg *cur_bus_mode;
> +
> + struct ggc_reg_op pha_stas_rx_low32;
> + struct ggc_reg_op pha_stas_rx_high32;
> + struct ggc_reg_op pha_stas_tx_low32;
> + struct ggc_reg_op pha_stas_tx_high32;
> + struct ggc_reg_op dll_sela_after_mask;
> + struct ggc_reg_op dll_selb_after_mask;
> +
> + struct ggc_reg_op dll_delay_100m_backup;
> + struct ggc_reg_op dll_delay_200m_backup;
> +
> + struct ggc_reg_op dll_sela_100m_cfg;
> + struct ggc_reg_op dll_sela_200m_cfg;
> + struct ggc_reg_op dll_selb_100m_cfg;
> + struct ggc_reg_op dll_selb_200m_cfg;
> + struct ggc_reg_op dll_selb_100m_cfg_en;
> + struct ggc_reg_op dll_selb_200m_cfg_en;
> + struct ggc_reg_op internl_tuning_en_100m;
> + struct ggc_reg_op internl_tuning_en_200m;
> + struct ggc_reg_op cmd19_cnt_cfg;
> +
> + struct ggc_reg_op inject_failure_for_tuning_enable_cfg;
> + struct ggc_reg_op inject_failure_for_200m_tuning_cfg;
> + struct ggc_reg_op inject_failure_for_100m_tuning_cfg;
> +
> + int def_sela_100m;
> + int def_sela_200m;
> + int def_selb_100m;
> + int def_selb_200m;
> +
> + u32 gg_reg_cur[16];
> + u8 cur_read_buf[512];
> +
> + bool dll_unlock_reinit_flg;
> + u8 driver_strength_reinit_flg;
> + bool tuning_cmd7_timeout_reinit_flg;
> + u32 tuning_cmd7_timeout_reinit_cnt;
> + u32 ggc_cur_sela;
> + bool selx_tuning_done_flag;
> + u32 ggc_cmd_tx_selb_failed_range;
> + int ggc_sw_selb_tuning_first_selb;
> + enum tuning_state ggc_sela_tuning_result[11];
> + int dll_voltage_scan_map[4];
> + int cur_dll_voltage_idx;
> + int sdr50_notuning_sela_inject_flag;
> + int sdr50_notuning_crc_error_flag;
> + u32 sdr50_notuning_sela_rx_inject;
> + u32 bh201_sdr50_sela_sw_inject;
> + u32 bh201_sdr50_selb_hw_inject;
> + u32 bh201_sdr104_selb_hw_inject;
> + u32 bh201_drive_strength;
> + bool tuning_in_progress;
> + int pwr_gpio; /* External power enable pin for Redriver IC */
> + int det_gpio;
> };

Really? What is all this? No, I can't continue to review this - as I
expect this will just waste of my time. Sorry.

Kind regards
Uffe

>
> +/*
> + * The APIs used to initialization GGC chip and structure
> + */
> +static void cfg_bit_2_byte(int max_bit, int tar, int *byt, int *bit)
> +{
> + u8 cfg_bit_map[6] = {6, 5, 4, 2, 1, 0};
> +
> + *byt = (max_bit - tar) / 6;
> + *bit = cfg_bit_map[(max_bit - tar) % 6];
> +}
> +
> +static u32 cfg_read_bits_ofs_mask(u8 *cfg, struct ggc_reg_op *bits)
> +{
> + u32 rv = 0;
> + u32 mask = bits->mask;
> + int byte = 0, bit = 0;
> + int i = 0;
> +
> + while (mask) {
> + cfg_bit_2_byte(MAX_CFG_BIT_VAL, bits->ofs + i, &byte, &bit);
> + if (cfg[byte] & (1 << bit))
> + rv |= 1 << i;
> +
> + i++;
> + mask >>= 1;
> + };
> + return rv;
> +}
> +
> +static void get_default_setting(struct sdhci_host *host, u8 *data)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + ggc->def_sela_100m =
> + cfg_read_bits_ofs_mask(data, &ggc->dll_sela_100m_cfg);
> + ggc->def_sela_200m =
> + cfg_read_bits_ofs_mask(data, &ggc->dll_sela_200m_cfg);
> + ggc->def_selb_100m =
> + cfg_read_bits_ofs_mask(data, &ggc->dll_sela_100m_cfg);
> + ggc->def_selb_200m =
> + cfg_read_bits_ofs_mask(data, &ggc->dll_sela_200m_cfg);
> +}
> +
> +static void cfg_write_bits_ofs_mask(u8 *cfg,
> + struct ggc_reg_op *bits, u32 write_value)
> +{
> + u32 wv = write_value & bits->mask;
> + u32 mask = bits->mask;
> + int byte = 0, bit = 0;
> + int i = 0;
> +
> + while (mask) {
> + cfg_bit_2_byte(MAX_CFG_BIT_VAL, bits->ofs + i, &byte, &bit);
> + if (wv & 1)
> + cfg[byte] |= (u8) (1 << bit);
> + else
> + cfg[byte] &= (u8) (~(1 << bit));
> +
> + i++;
> + wv >>= 1;
> + mask >>= 1;
> + };
> +}
> +
> +/* Use to get byte offset and bit offset */
> +static void ram_bit_2_bt(int tar, int *byt, int *bit)
> +{
> + *byt = tar / 8;
> + *bit = tar % 8;
> +}
> +
> +static void set_gg_reg_cur_val(struct sdhci_bht_host *ggc,
> + u8 *data, u8 len)
> +{
> + memcpy(&ggc->gg_reg_cur[0], data, len);
> +}
> +
> +static void get_gg_reg_cur_val(struct sdhci_bht_host *ggc,
> + u8 *data, u8 len)
> +{
> + memcpy(data, &ggc->gg_reg_cur[0], len);
> +}
> +
> +static u32 read_ram_bits_ofs_mask(u8 *cfg, struct ggc_reg_op *bits)
> +{
> + u32 rv = 0;
> + u32 mask = bits->mask;
> + int byte = 0, bit = 0;
> + int i = 0;
> +
> + while (mask) {
> + /* No replace interface at bitmap
> + * The read out address maybe not align at byte
> + */
> + ram_bit_2_bt(bits->ofs + i, &byte, &bit);
> + if (cfg[byte] & (1 << bit))
> + rv |= 1 << i;
> +
> + i++;
> + mask >>= 1;
> + };
> + return rv;
> +}
> +
> +static void ggc_dll_voltage_init(struct sdhci_host *host)
> +{
> + int i = 0;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + for (i = 0; i < 4; i++) {
> + ggc->dll_voltage_scan_map[i] = 0;
> + ggc->sdr50.dll_voltage_unlock_cnt[i] = 0;
> + ggc->sdr104.dll_voltage_unlock_cnt[i] = 0;
> + }
> +}
> +
> +static void ggc_chip_init(struct sdhci_host *host)
> +{
> + u8 data[512];
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + memcpy(data, ggc_cfg_data, sizeof(ggc_cfg_data));
> + get_default_setting(host, data);
> + set_gg_reg_cur_val(ggc, data, 64);
> +}
> +
> +static void driver_send_command7(struct sdhci_host *host)
> +{
> + struct mmc_host *mmc = host->mmc;
> + struct mmc_command cmd = {0};
> +
> + cmd.opcode = MMC_SELECT_CARD;
> + cmd.arg = 0;
> + cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
> + mmc_wait_for_cmd(mmc, &cmd, 3);
> +}
> +
> +static void driver_send_command24(struct sdhci_host *host,
> + u32 *cfg_data, int data_len)
> +{
> + struct mmc_host *mmc = host->mmc;
> + struct mmc_request mrq = {0};
> + struct mmc_command cmd = { 0 };
> + struct mmc_data data = { 0 };
> + struct scatterlist sg;
> + u8 *data1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
> +
> + if (!data1)
> + return;
> +
> + memcpy(data1, (u8 *)&(cfg_data[0]), data_len);
> + sg_init_one(&sg, data1, 512);
> +
> + cmd.opcode = MMC_WRITE_BLOCK;
> + cmd.arg = 0;
> + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
> + data.blksz = 512;
> + data.blocks = 1;
> + data.flags = MMC_DATA_WRITE;
> + data.timeout_ns = 1000 * 1000 * 1000;
> + data.sg = &sg;
> + data.sg_len = 1;
> + mrq.cmd = &cmd;
> + mrq.data = &data;
> + mrq.stop = NULL;
> +
> + mmc_wait_for_req(mmc, &mrq);
> + kfree(data1);
> +}
> +
> +static void bht_update_cfg(struct mmc_host *mmc_host,
> + struct mmc_card *card, u32 *cfg_data, int data_len)
> +{
> + struct sdhci_host *host;
> +
> + host = mmc_priv(mmc_host);
> + mmc_set_bus_width(mmc_host, MMC_BUS_WIDTH_4);
> + if (host->ops->reset)
> + host->ops->reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA);
> +
> + driver_send_command7(host);
> + driver_send_command24(host, cfg_data, data_len);
> + driver_send_command7(host);
> +
> + mmc_set_bus_width(mmc_host, MMC_BUS_WIDTH_1);
> +}
> +
> +
> +static void tx_selb_failed_tb_reset(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + memset(&ggc->sdr104.tx_selb_tb, 0xff,
> + sizeof(ggc->sdr104.tx_selb_tb));
> + memset(&ggc->sdr50.tx_selb_tb, 0xff,
> + sizeof(ggc->sdr50.tx_selb_tb));
> +}
> +
> +static void all_selb_failed_tb_reset(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + memset(&ggc->sdr104.all_selb_tb, 0xff,
> + sizeof(ggc->sdr104.all_selb_tb));
> + memset(&ggc->sdr50.all_selb_tb, 0xff,
> + sizeof(ggc->sdr50.all_selb_tb));
> +}
> +
> +static void tx_selb_failed_history_reset(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + ggc->sdr50.tx_selb_failed_history = BIT_PASS_MASK;
> + ggc->sdr104.tx_selb_failed_history = BIT_PASS_MASK;
> +}
> +
> +static void ggc_reset_selx_failed_tb(struct sdhci_host *host)
> +{
> + tx_selb_failed_tb_reset(host);
> + all_selb_failed_tb_reset(host);
> + tx_selb_failed_history_reset(host);
> +}
> +
> +static void _ggc_reset_sela_tuning_result(
> + struct sdhci_msm_host *host)
> +{
> + int i = 0;
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(host);
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++)
> + ggc->ggc_sela_tuning_result[i] = NO_TUNING;
> +}
> +
> +static void _ggc_reset_tuning_result_for_dll(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + ggc_reset_selx_failed_tb(host);
> + ggc->ggc_cmd_tx_selb_failed_range = BIT_PASS_MASK;
> + ggc->selx_tuning_done_flag = 0;
> + _ggc_reset_sela_tuning_result(vendor_host);
> +}
> +
> +static void ggc_tuning_result_reset(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + _ggc_reset_tuning_result_for_dll(host);
> +
> + ggc->sdr50.bus_mode = SD_FNC_AM_SDR50;
> + ggc->sdr104.bus_mode = SD_FNC_AM_SDR104;
> + ggc->driver_strength_reinit_flg = 0;
> + ggc->cur_bus_mode = NULL;
> + ggc->dll_unlock_reinit_flg = 0;
> + ggc->tuning_cmd7_timeout_reinit_flg = 0;
> + ggc->tuning_cmd7_timeout_reinit_cnt = 0;
> + ggc->sdr50_notuning_sela_inject_flag = 1;
> + ggc->sdr50_notuning_crc_error_flag = 0;
> + ggc->sdr50_notuning_sela_rx_inject =
> + ggc->bh201_sdr50_sela_sw_inject;
> +}
> +
> +static void bht_load_hw_inject(struct mmc_host *mmc_host,
> + struct mmc_card *card, u32 *cfg_data, int data_len,
> + u32 sel200, u32 sel100)
> +{
> + struct sdhci_host *host = mmc_priv(mmc_host);
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + u32 gg_hw_inj[16];
> +
> + memcpy(gg_hw_inj, ggc_cfg_data, sizeof(ggc_cfg_data));
> + gg_hw_inj[1] = 0x7364032;
> + gg_hw_inj[11] = ggc->bh201_sdr104_selb_hw_inject;
> + gg_hw_inj[12] = ggc->bh201_sdr50_selb_hw_inject;
> + gg_hw_inj[15] = ggc->bh201_drive_strength;
> +
> + bht_update_cfg(mmc_host, card, gg_hw_inj, data_len);
> +}
> +
> +static void bht_load(struct mmc_host *mmc_host, struct mmc_card *card)
> +{
> + struct sdhci_host *host = mmc_priv(mmc_host);
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host =
> + sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + u8 driver_strength_reinit_flg =
> + ggc->driver_strength_reinit_flg;
> + int cur_dll_voltage_idx = ggc->cur_dll_voltage_idx;
> + u32 i = 0;
> + u32 reg;
> + u32 gg_sw_def[16];
> + u8 data[512];
> + static const int s_dll_voltage_cfg[4][2] = {
> + {0x30503106, 0x64141711},
> + {0x31503106, 0x64141711},
> + {0x30503106, 0x64141751},
> + {0x31503106, 0x64141751},
> + };
> +
> + memcpy(gg_sw_def, ggc_cfg_data, sizeof(ggc_cfg_data));
> +
> + pr_debug("%s: Load BHT patch\n", mmc_hostname(mmc_host));
> +
> + mmc_send_relative_addr(mmc_host, &card->rca);
> + mmc_host->card = card;
> + if (ggc->dll_unlock_reinit_flg) {
> + pr_debug("dll unlock reinit: idx=%d\n",
> + cur_dll_voltage_idx);
> + ggc_tuning_result_reset(host);
> + gg_sw_def[8] = s_dll_voltage_cfg[cur_dll_voltage_idx][0];
> + gg_sw_def[9] = s_dll_voltage_cfg[cur_dll_voltage_idx][1];
> + }
> + if (ggc->driver_strength_reinit_flg) {
> + pr_debug("%s: driver strength should be init to %d\n",
> + mmc_hostname(mmc_host), driver_strength_reinit_flg);
> + ggc_tuning_result_reset(host);
> + if (ggc->driver_strength_reinit_flg <= 7) {
> + gg_sw_def[15] &= 0x0f0fffff;
> + gg_sw_def[15] |= (driver_strength_reinit_flg << 28)
> + | (driver_strength_reinit_flg << 20);
> + }
> + }
> + driver_send_command7(host);
> + if (ggc->tuning_cmd7_timeout_reinit_flg == 0
> + && ggc->selx_tuning_done_flag == 0) {
> + bht_load_hw_inject(mmc_host, card, gg_sw_def,
> + sizeof(gg_sw_def), 0x3ff, 0x77f);
> + bht_update_cfg(mmc_host, card, gg_sw_def, sizeof(gg_sw_def));
> + set_gg_reg_cur_val(ggc, (u8 *)gg_sw_def, sizeof(gg_sw_def));
> + } else {
> + if (ggc->selx_tuning_done_flag)
> + pr_debug("%s: skip load default configuration for tuning done\n",
> + mmc_hostname(mmc_host));
> + if (ggc->tuning_cmd7_timeout_reinit_flg) {
> + pr_debug("%s: write previous inject results to bh201 for cmd7 timeout flag is set\n",
> + mmc_hostname(mmc_host));
> + get_gg_reg_cur_val(ggc, data, sizeof(gg_sw_def));
> +
> + pr_debug("%s: dump config data before write to bh201\n", __func__);
> + for (i = 0; i < 128; i++) {
> + memcpy(&reg, data+i*sizeof(u32), sizeof(u32));
> + pr_debug("ggc_reg32[%03d]=0x%08x\n", i, reg);
> + }
> + bht_update_cfg(mmc_host, card, (u32 *)data, sizeof(data));
> + }
> + }
> +}
> +
> static void bht_signal_voltage_on_off(struct sdhci_host *host, u32 on_off)
> {
> + int card_present_status = 0;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + if (gpio_is_valid(ggc->det_gpio)) {
> + card_present_status = gpio_get_value(ggc->det_gpio);
> + pr_debug("%s: detect_gpio pin %d status is %d\n",
> + mmc_hostname(host->mmc), ggc->det_gpio, card_present_status);
> + } else {
> + pr_err("%s: no det_gpio provided\n", mmc_hostname(host->mmc));
> + }
> +
> + if (on_off) {
> + pr_debug("%s: apply bht power on patch\n", mmc_hostname(host->mmc));
> +
> + ggc_dll_voltage_init(host);
> +
> + ggc_chip_init(host);
> +
> + if (gpio_is_valid(ggc->pwr_gpio)) {
> + gpio_direction_output(ggc->pwr_gpio, 1);
> + msleep(100);
> + pr_debug("%s: pwr_gpio pin %d status is %d\n",
> + mmc_hostname(host->mmc), ggc->pwr_gpio,
> + gpio_get_value(ggc->pwr_gpio));
> + } else {
> + pr_err("%s: no pwr_gpio provided\n", mmc_hostname(host->mmc));
> + }
> + } else {
> + pr_debug("%s: apply bht power off patch\n", mmc_hostname(host->mmc));
> +
> + ggc_dll_voltage_init(host);
> +
> + if (card_present_status <= 0) {
> + pr_debug("%s: clear tuning result for power off and card removed\n",
> + mmc_hostname(host->mmc));
> + ggc_tuning_result_reset(host);
> + }
> + ggc_chip_init(host);
> +
> + if (gpio_is_valid(ggc->pwr_gpio)) {
> + gpio_direction_output(ggc->pwr_gpio, 0);
> + pr_debug("%s: pwr_gpio pin %d status is %d\n",
> + mmc_hostname(host->mmc), ggc->pwr_gpio,
> + gpio_get_value(ggc->pwr_gpio));
> + } else {
> + pr_err("%s: no pwr_gpio provided\n", mmc_hostname(host->mmc));
> + }
> + }
> }
>
> static void sdhci_bht_parse(struct mmc_host *mmc_host)
> {
> + struct sdhci_host *host = mmc_priv(mmc_host);
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + struct device_node *np = vendor_host->pdev->dev.of_node;
> + struct ggc_reg_op index_array[] = {
> + { 14, 0xffffffff, 0 }, { 46, 0xffffffff, 0 },
> + { 205, 0xffffffff, 0 }, { 237, 0xffffffff, 0 },
> + { 141, 0xf, 0 }, { 145, 0xf, 0 },
> + { 83, 0xfff, 0 }, { 95, 0xfff, 0 },
> + { 126, 0xf, 0 }, { 130, 0xf, 0 },
> + { 140, 0xf, 0 }, { 144, 0xf, 0 },
> + { 183, 0x1, 0 }, { 184, 0x1, 0 },
> + { 171, 0x1, 0 }, { 172, 0x1, 0 },
> + { 173, 0x3f, 0 }, { 357, 0x1, 0 },
> + { 93, 0x7ff, 0 }, { 81, 0x7ff, 0 },
> + };
> +
> + memcpy(&ggc->pha_stas_rx_low32, &index_array[0],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->pha_stas_rx_high32, &index_array[1],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->pha_stas_tx_low32, &index_array[2],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->pha_stas_tx_high32, &index_array[3],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_sela_after_mask, &index_array[4],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_selb_after_mask, &index_array[5],
> + sizeof(struct ggc_reg_op));
> +
> + memcpy(&ggc->dll_delay_100m_backup, &index_array[6],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_delay_200m_backup, &index_array[7],
> + sizeof(struct ggc_reg_op));
> +
> + memcpy(&ggc->dll_sela_100m_cfg, &index_array[8],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_sela_200m_cfg, &index_array[9],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_selb_100m_cfg, &index_array[10],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_selb_200m_cfg, &index_array[11],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_selb_100m_cfg_en, &index_array[12],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->dll_selb_200m_cfg_en, &index_array[13],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->internl_tuning_en_100m, &index_array[14],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->internl_tuning_en_200m, &index_array[15],
> + sizeof(struct ggc_reg_op));
> + memcpy(&ggc->cmd19_cnt_cfg, &index_array[16],
> + sizeof(struct ggc_reg_op));
> +
> + memcpy(&ggc->inject_failure_for_tuning_enable_cfg,
> + &index_array[17], sizeof(struct ggc_reg_op));
> + memcpy(&ggc->inject_failure_for_200m_tuning_cfg,
> + &index_array[18], sizeof(struct ggc_reg_op));
> + memcpy(&ggc->inject_failure_for_100m_tuning_cfg,
> + &index_array[19], sizeof(struct ggc_reg_op));
> +
> + ggc->bh201_drive_strength = 0x3A314177;
> + ggc->bh201_sdr50_sela_sw_inject = 0x47F;
> + ggc->bh201_sdr50_selb_hw_inject = 0x00725777;
> + ggc->bh201_sdr104_selb_hw_inject = 0x57336200;
> + host->flags |= SDHCI_SDR50_NEEDS_TUNING;
> + host->mmc_host_ops.init_card = bht_load;
> +
> + if (of_find_property(np, "bh201_drive_strength", NULL))
> + of_property_read_u32_index(np, "bh201_drive_strength", 0,
> + &ggc->bh201_drive_strength);
> + if (of_find_property(np, "bh201_sdr50_sela_sw_inject", NULL))
> + of_property_read_u32_index(np, "bh201_sdr50_sela_sw_inject", 0,
> + &ggc->bh201_sdr50_sela_sw_inject);
> + if (of_find_property(np, "bh201_sdr50_selb_hw_inject", NULL))
> + of_property_read_u32_index(np, "bh201_sdr50_selb_hw_inject", 0,
> + &ggc->bh201_sdr50_selb_hw_inject);
> + if (of_find_property(np, "bh201_sdr104_selb_hw_inject", NULL))
> + of_property_read_u32_index(np, "bh201_sdr104_selb_hw_inject", 0,
> + &ggc->bh201_sdr104_selb_hw_inject);
> +
> + ggc->pwr_gpio = of_get_named_gpio(np, "pwr-gpios", 0);
> + if (!gpio_is_valid(ggc->pwr_gpio))
> + dev_err(&vendor_host->pdev->dev, "no pwr-gpio provided !\n");
> + else
> + dev_info(&vendor_host->pdev->dev, "pwr-gpio provided\n");
> +
> + ggc->det_gpio = of_get_named_gpio(np, "det-gpios", 0);
> + if (!gpio_is_valid(ggc->det_gpio))
> + dev_err(&vendor_host->pdev->dev, "no det-gpio provided !\n");
> + else
> + dev_info(&vendor_host->pdev->dev, "det-gpio provided\n");
> +
> + if (gpio_is_valid(ggc->pwr_gpio)) {
> + devm_gpio_request_one(&vendor_host->pdev->dev, ggc->pwr_gpio,
> + GPIOF_OUT_INIT_LOW, "sprd-1-pwr");
> + pr_debug("%s: detect_gpio pin %d\n",
> + mmc_hostname(host->mmc), ggc->pwr_gpio);
> + } else {
> + pr_err("%s: no detect_gpio provided\n",
> + mmc_hostname(host->mmc));
> + }
> +
> + if (gpio_is_valid(ggc->det_gpio)) {
> + devm_gpio_request_one(&vendor_host->pdev->dev, ggc->det_gpio,
> + GPIOF_DIR_IN, "sprd-1-det");
> + pr_debug("%s: detect_gpio pin %d\n",
> + mmc_hostname(host->mmc), ggc->det_gpio);
> + } else {
> + pr_err("%s: no detect_gpio provided\n",
> + mmc_hostname(host->mmc));
> + }
> }
>
> static void sdhci_bht_resource_free(struct sdhci_msm_host *vendor_host)
> {
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + struct platform_device *pdev = vendor_host->pdev;
> +
> + if (gpio_is_valid(ggc->det_gpio))
> + devm_gpio_free(&pdev->dev, ggc->det_gpio);
> + if (gpio_is_valid(ggc->pwr_gpio))
> + devm_gpio_free(&pdev->dev, ggc->pwr_gpio);
> }
>
> -static void mmc_rescan_bht(struct work_struct *work)
> +/*
> + * The code porting from mmc/core start
> + * We need to porting the code from mmc/core for below reasons:
> + * 1.ACMD42 should be added between Bus width switch and transfer mode switch
> + * 2.Bus width switch should at front of transfer mode switch during mode switch stage
> + * 3.If above two points can be patched to sd.c directly, we can decrease much redundant code
> + * 4.Above changes match with SD host spec, but don’t match with current sd initialazation flow
> + */
> +static const unsigned int freqs[] = { 400000, 300000, 200000, 100000 };
> +
> +static int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
> + struct mmc_command *cmd)
> {
> + struct mmc_request mrq = {};
> + int i, err = -EIO;
> +
> + /*
> + * We have to resend MMC_APP_CMD for each attempt so
> + * we cannot use the retries field in mmc_command.
> + */
> + for (i = 0; i <= MMC_CMD_RETRIES; i++) {
> + err = mmc_app_cmd(host, card);
> + if (err) {
> + /* no point in retrying; no APP commands allowed */
> + if (mmc_host_is_spi(host)) {
> + if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
> + break;
> + }
> + continue;
> + }
> +
> + memset(&mrq, 0, sizeof(struct mmc_request));
> +
> + memset(cmd->resp, 0, sizeof(cmd->resp));
> + cmd->retries = 0;
> +
> + mrq.cmd = cmd;
> + cmd->data = NULL;
> +
> + mmc_wait_for_req(host, &mrq);
> +
> + err = cmd->error;
> + if (!cmd->error)
> + break;
> +
> + /* no point in retrying illegal APP commands */
> + if (mmc_host_is_spi(host)) {
> + if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
> + break;
> + }
> + }
> +
> + return err;
> }
>
> -static int sdhci_bht_execute_tuning(struct mmc_host *mmc, u32 opcode)
> +static int mmc_app_set_clr_card_detect(struct mmc_card *card)
> {
> - int ret = 0;
> + struct mmc_command cmd = {};
>
> - return ret;
> + cmd.opcode = 42;
> + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
> +
> + return mmc_wait_for_app_cmd(card->host, card, &cmd);
> +}
> +/*
> + * UHS-I specific initialization procedure
> + */
> +static int mmc_sd_init_uhs_card_bayhub(struct mmc_card *card)
> +{
> + int err;
> + u8 *status;
> +
> + if (!(card->csd.cmdclass & CCC_SWITCH))
> + return 0;
> +
> + status = kmalloc(64, GFP_KERNEL);
> + if (!status)
> + return -ENOMEM;
> +
> + /* Set 4-bit bus width */
> + err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
> + if (err)
> + goto out;
> +
> + mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
> +
> + /*
> + * Select the bus speed mode depending on host
> + * and card capability.
> + */
> + sd_update_bus_speed_mode(card);
> +
> + /* GGC chip need this command to switch mode */
> + mmc_app_set_clr_card_detect(card);
> +
> + /* Set the driver strength for the card */
> + err = sd_select_driver_type(card, status);
> + if (err)
> + goto out;
> +
> + /* Set current limit for the card */
> + err = sd_set_current_limit(card, status);
> + if (err)
> + goto out;
> +
> + /* Set bus speed mode of the card */
> + err = sd_set_bus_speed_mode(card, status);
> + if (err)
> + goto out;
> +
> + /*
> + * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
> + * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
> + */
> + if (!mmc_host_is_spi(card->host) &&
> + (card->host->ios.timing == MMC_TIMING_UHS_SDR50 ||
> + card->host->ios.timing == MMC_TIMING_UHS_DDR50 ||
> + card->host->ios.timing == MMC_TIMING_UHS_SDR104)) {
> + err = mmc_execute_tuning(card);
> +
> + /*
> + * As SD Specifications Part1 Physical Layer Specification
> + * Version 3.01 says, CMD19 tuning is available for unlocked
> + * cards in transfer state of 1.8V signaling mode. The small
> + * difference between v3.00 and 3.01 spec means that CMD19
> + * tuning is also available for DDR50 mode.
> + */
> + if (err && card->host->ios.timing == MMC_TIMING_UHS_DDR50) {
> + pr_warn("%s: ddr50 tuning failed\n",
> + mmc_hostname(card->host));
> + err = 0;
> + }
> + }
> +
> +out:
> + kfree(status);
> +
> + return err;
> +}
> +
> +/*
> + * Handle the detection and initialisation of a card.
> + *
> + * In the case of a resume, "oldcard" will contain the card
> + * we're trying to reinitialise.
> + */
> +static int mmc_sd_init_card_bayhub(struct mmc_host *host, u32 ocr,
> + struct mmc_card *oldcard)
> +{
> + struct mmc_card *card;
> + int err;
> + u32 cid[4];
> + u32 rocr = 0;
> + bool v18_fixup_failed = false;
> +
> + WARN_ON(!host->claimed);
> +retry:
> + err = mmc_sd_get_cid(host, ocr, cid, &rocr);
> + if (err)
> + return err;
> +
> + if (oldcard) {
> + if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
> + pr_debug("%s: Perhaps the card was replaced\n",
> + mmc_hostname(host));
> + return -ENOENT;
> + }
> +
> + card = oldcard;
> + } else {
> + /*
> + * Allocate card structure.
> + */
> + card = mmc_alloc_card(host, &sd_type);
> + if (IS_ERR(card))
> + return PTR_ERR(card);
> +
> + card->ocr = ocr;
> + card->type = MMC_TYPE_SD;
> + memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
> + }
> +
> + /*
> + * Call the optional HC's init_card function to handle quirks.
> + */
> + if (host->ops->init_card)
> + host->ops->init_card(host, card);
> +
> + /*
> + * For native busses: get card RCA and quit open drain mode.
> + */
> + if (!mmc_host_is_spi(host)) {
> + err = mmc_send_relative_addr(host, &card->rca);
> + if (err)
> + goto free_card;
> + }
> +
> + if (!oldcard) {
> + err = mmc_sd_get_csd(card);
> + if (err)
> + goto free_card;
> +
> + mmc_decode_cid(card);
> + }
> +
> + /*
> + * handling only for cards supporting DSR and hosts requesting
> + * DSR configuration
> + */
> + if (card->csd.dsr_imp && host->dsr_req)
> + mmc_set_dsr(host);
> +
> + /*
> + * Select card, as all following commands rely on that.
> + */
> + if (!mmc_host_is_spi(host)) {
> + err = mmc_select_card(card);
> + if (err)
> + goto free_card;
> + }
> +
> + err = mmc_sd_setup_card(host, card, oldcard != NULL);
> + if (err)
> + goto free_card;
> +
> + /*
> + * If the card has not been power cycled, it may still be using 1.8V
> + * signaling. Detect that situation and try to initialize a UHS-I (1.8V)
> + * transfer mode.
> + */
> + if (!v18_fixup_failed && !mmc_host_is_spi(host) && mmc_host_uhs(host) &&
> + mmc_sd_card_using_v18(card) &&
> + host->ios.signal_voltage != MMC_SIGNAL_VOLTAGE_180) {
> + /*
> + * Re-read switch information in case it has changed since
> + * oldcard was initialized.
> + */
> + if (oldcard) {
> + err = mmc_read_switch(card);
> + if (err)
> + goto free_card;
> + }
> + if (mmc_sd_card_using_v18(card)) {
> + if (mmc_host_set_uhs_voltage(host) ||
> + mmc_sd_init_uhs_card_bayhub(card)) {
> + v18_fixup_failed = true;
> + mmc_power_cycle(host, ocr);
> + if (!oldcard)
> + mmc_remove_card(card);
> + goto retry;
> + }
> + goto done;
> + }
> + }
> +
> + /* Initialization sequence for UHS-I cards */
> + if (rocr & SD_ROCR_S18A && mmc_host_uhs(host)) {
> + err = mmc_sd_init_uhs_card_bayhub(card);
> + if (err)
> + goto free_card;
> + } else {
> + /*
> + * Switch to wider bus (if supported).
> + * Bayhub patch move mmc_app_set_bus_width in front of mmc_sd_switch_hs
> + */
> + if ((host->caps & MMC_CAP_4_BIT_DATA) &&
> + (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
> + err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
> + if (err)
> + goto free_card;
> +
> + mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
> + }
> +
> + /* GGC chip need this command to switch mode */
> + mmc_app_set_clr_card_detect(card);
> +
> + /*
> + * Attempt to change to high-speed (if supported)
> + */
> + err = mmc_sd_switch_hs(card);
> + if (err > 0)
> + mmc_set_timing(card->host, MMC_TIMING_SD_HS);
> + else if (err)
> + goto free_card;
> +
> + /*
> + * Set bus speed.
> + */
> + mmc_set_clock(host, mmc_sd_get_max_clock(card));
> + }
> +
> + if (!oldcard) {
> + /* Read/parse the extension registers. */
> + err = sd_read_ext_regs(card);
> + if (err)
> + goto free_card;
> + }
> +
> + /* Enable internal SD cache if supported. */
> + if (card->ext_perf.feature_support & SD_EXT_PERF_CACHE) {
> + err = sd_enable_cache(card);
> + if (err)
> + goto free_card;
> + }
> +
> + if (host->cqe_ops && !host->cqe_enabled) {
> + err = host->cqe_ops->cqe_enable(host, card);
> + if (!err) {
> + host->cqe_enabled = true;
> + host->hsq_enabled = true;
> + pr_info("%s: Host Software Queue enabled\n",
> + mmc_hostname(host));
> + }
> + }
> +
> + if (host->caps2 & MMC_CAP2_AVOID_3_3V &&
> + host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
> + pr_err("%s: Host failed to negotiate down from 3.3V\n",
> + mmc_hostname(host));
> + err = -EINVAL;
> + goto free_card;
> + }
> +done:
> + host->card = card;
> + return 0;
> +
> +free_card:
> + if (!oldcard)
> + mmc_remove_card(card);
> +
> + return err;
> +}
> +
> +static int mmc_sd_hw_reset_bayhub(struct mmc_host *host)
> +{
> + mmc_power_cycle(host, host->card->ocr);
> + return mmc_sd_init_card_bayhub(host, host->card->ocr, host->card);
> +}
> +
> +static const struct mmc_bus_ops mmc_sd_ops_bayhub = {
> + .remove = mmc_sd_remove,
> + .detect = mmc_sd_detect,
> + .runtime_suspend = mmc_sd_runtime_suspend,
> + .runtime_resume = mmc_sd_runtime_resume,
> + .suspend = mmc_sd_suspend,
> + .resume = mmc_sd_resume,
> + .alive = mmc_sd_alive,
> + .shutdown = mmc_sd_suspend,
> + .hw_reset = mmc_sd_hw_reset_bayhub,
> + .cache_enabled = sd_cache_enabled,
> + .flush_cache = sd_flush_cache,
> +};
> +
> +/*
> + * Starting point for SD card init.
> + */
> +static int mmc_attach_sd_bayhub(struct mmc_host *host)
> +{
> + int err;
> + u32 ocr, rocr;
> +
> + WARN_ON(!host->claimed);
> +
> + err = mmc_send_app_op_cond(host, 0, &ocr);
> + if (err)
> + return err;
> +
> + mmc_attach_bus(host, &mmc_sd_ops_bayhub);
> +
> + if (host->ocr_avail_sd)
> + host->ocr_avail = host->ocr_avail_sd;
> +
> + /*
> + * We need to get OCR a different way for SPI.
> + */
> + if (mmc_host_is_spi(host)) {
> + mmc_go_idle(host);
> +
> + err = mmc_spi_read_ocr(host, 0, &ocr);
> + if (err)
> + goto err;
> + }
> +
> + /*
> + * Some SD cards claims an out of spec VDD voltage range. Let's treat
> + * these bits as being in-valid and especially also bit7.
> + */
> + ocr &= ~0x7FFF;
> +
> + rocr = mmc_select_voltage(host, ocr);
> +
> + /*
> + * Can we support the voltage(s) of the card(s)?
> + */
> + if (!rocr) {
> + err = -EINVAL;
> + goto err;
> + }
> +
> + /*
> + * Detect and init the card.
> + */
> + err = mmc_sd_init_card_bayhub(host, rocr, NULL);
> + if (err)
> + goto err;
> +
> + mmc_release_host(host);
> + err = mmc_add_card(host->card);
> + if (err)
> + goto remove_card;
> +
> + mmc_claim_host(host);
> + return 0;
> +
> +remove_card:
> + mmc_remove_card(host->card);
> + host->card = NULL;
> + mmc_claim_host(host);
> +err:
> + mmc_detach_bus(host);
> +
> + pr_err("%s: error %d whilst initialising SD card\n",
> + mmc_hostname(host), err);
> +
> + return err;
> +}
> +
> +static int mmc_schedule_delayed_work(struct delayed_work *work,
> + unsigned long delay)
> +{
> + /*
> + * We use the system_freezable_wq, because of two reasons.
> + * First, it allows several works (not the same work item) to be
> + * executed simultaneously. Second, the queue becomes frozen when
> + * userspace becomes frozen during system PM.
> + */
> + return queue_delayed_work(system_freezable_wq, work, delay);
> +}
> +
> +static void mmc_hw_reset_for_init(struct mmc_host *host)
> +{
> + mmc_pwrseq_reset(host);
> +
> + if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
> + return;
> + host->ops->hw_reset(host);
> +}
> +
> +static int mmc_rescan_try_freq(struct mmc_host *host, unsigned int freq)
> +{
> + host->f_init = freq;
> +
> + pr_debug("%s: %s: trying to init card at %u Hz\n",
> + mmc_hostname(host), __func__, host->f_init);
> +
> + mmc_power_up(host, host->ocr_avail);
> +
> + /*
> + * Some eMMCs (with VCCQ always on) may not be reset after power up, so
> + * do a hardware reset if possible.
> + */
> + mmc_hw_reset_for_init(host);
> +
> + /*
> + * sdio_reset sends CMD52 to reset card. Since we do not know
> + * if the card is being re-initialized, just send it. CMD52
> + * should be ignored by SD/eMMC cards.
> + * Skip it if we already know that we do not support SDIO commands
> + */
> + if (!(host->caps2 & MMC_CAP2_NO_SDIO))
> + sdio_reset(host);
> +
> + mmc_go_idle(host);
> +
> + if (!(host->caps2 & MMC_CAP2_NO_SD)) {
> + if (mmc_send_if_cond_pcie(host, host->ocr_avail))
> + goto out;
> + if (mmc_card_sd_express(host))
> + return 0;
> + }
> +
> + /* Order's important: probe SDIO, then SD, then MMC */
> + if (!(host->caps2 & MMC_CAP2_NO_SDIO))
> + if (!mmc_attach_sdio(host))
> + return 0;
> +
> + if (!(host->caps2 & MMC_CAP2_NO_SD))
> + if (!mmc_attach_sd_bayhub(host))
> + return 0;
> +
> + if (!(host->caps2 & MMC_CAP2_NO_MMC))
> + if (!mmc_attach_mmc(host))
> + return 0;
> +
> +out:
> + mmc_power_off(host);
> + return -EIO;
> }
>
> +static void mmc_rescan_bht(struct work_struct *work)
> +{
> + struct mmc_host *host =
> + container_of(work, struct mmc_host, detect.work);
> + int i;
> +
> + if (host->rescan_disable)
> + return;
> +
> + /* If there is a non-removable card registered, only scan once */
> + if (!mmc_card_is_removable(host) && host->rescan_entered)
> + return;
> + host->rescan_entered = 1;
> +
> + if (host->trigger_card_event && host->ops->card_event) {
> + mmc_claim_host(host);
> + host->ops->card_event(host);
> + mmc_release_host(host);
> + host->trigger_card_event = false;
> + }
> +
> + /* Verify a registered card to be functional, else remove it. */
> + if (host->bus_ops)
> + host->bus_ops->detect(host);
> +
> + host->detect_change = 0;
> +
> + /* if there still is a card present, stop here */
> + if (host->bus_ops != NULL)
> + goto out;
> +
> + mmc_claim_host(host);
> + if (mmc_card_is_removable(host) && host->ops->get_cd &&
> + host->ops->get_cd(host) == 0) {
> + mmc_power_off(host);
> + mmc_release_host(host);
> + goto out;
> + }
> +
> + /* If an SD express card is present, then leave it as is. */
> + if (mmc_card_sd_express(host)) {
> + mmc_release_host(host);
> + goto out;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(freqs); i++) {
> + unsigned int freq = freqs[i];
> +
> + if (freq > host->f_max) {
> + if (i + 1 < ARRAY_SIZE(freqs))
> + continue;
> + freq = host->f_max;
> + }
> + if (!mmc_rescan_try_freq(host, max(freq, host->f_min)))
> + break;
> + if (freqs[i] <= host->f_min)
> + break;
> + }
> + mmc_release_host(host);
> +
> + out:
> + if (host->caps & MMC_CAP_NEEDS_POLL)
> + mmc_schedule_delayed_work(&host->detect, HZ);
> +}
> +
> +/* The code porting from mmc/core end */
> +
> +/*
> + * The APIs used to select good timing and configure GGC chip
> + */
> +static int card_deselect_card(struct sdhci_host *host)
> +{
> + int ret = -1;
> + int err;
> + struct mmc_host *mmc = host->mmc;
> + struct mmc_command cmd = { 0 };
> +
> + cmd.opcode = MMC_SELECT_CARD;
> + cmd.arg = 0;
> + cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
> +
> + err = mmc_wait_for_cmd(mmc, &cmd, 3);
> + if (err)
> + pr_err("BHT ERR: CMD7 FAIL: err = %d\n", err);
> + else
> + ret = 0;
> +
> + return ret;
> +}
> +
> +static bool enter_exit_emulator_mode(struct sdhci_host *host, bool b_enter)
> +{
> + bool ret = false;
> + u8 times = b_enter ? 2 : 1;
> + u8 i = 0;
> +
> + for (i = 0; i < times; i++) {
> + ret = card_deselect_card(host);
> + if (ret)
> + break;
> + }
> + return ret;
> +}
> +
> +static bool _gg_emulator_read_only(struct sdhci_host *host,
> + u8 *in_data, u32 datalen)
> +{
> + struct mmc_host *mmc = host->mmc;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + int rc = 0;
> + u8 *data1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
> + struct mmc_request mrq = { 0 };
> + struct mmc_command cmd = { 0 };
> + struct mmc_data data = { 0 };
> + struct scatterlist sg;
> +
> + if (!data1) {
> + pr_err("BHT MSG:gg read no memory\n");
> + rc = -ENOMEM;
> + goto out;
> + }
> +
> + sg_init_one(&sg, data1, 512);
> +
> + cmd.opcode = MMC_READ_SINGLE_BLOCK;
> + cmd.arg = 0;
> + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
> + data.blksz = 512;
> + data.blocks = 1;
> + data.flags = MMC_DATA_READ;
> + data.timeout_ns = 1000 * 1000 * 1000;
> + data.sg = &sg;
> + data.sg_len = 1;
> + mrq.cmd = &cmd;
> + mrq.data = &data;
> + mrq.stop = NULL;
> +
> + mmc_wait_for_req(mmc, &mrq);
> + memcpy(in_data, data1, datalen);
> +
> + kfree(data1);
> +
> + if ((cmd.error == -EILSEQ) || (data.error == -EILSEQ))
> + ggc->sdr50_notuning_crc_error_flag = 1;
> +
> + if (cmd.error || data.error)
> + rc = -1;
> +out:
> + return rc;
> +}
> +
> +static void host_cmddat_line_reset(struct sdhci_host *host)
> +{
> + if (host->ops->reset)
> + host->ops->reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
> +}
> +
> +static int gg_select_card_spec(struct sdhci_host *host)
> +{
> + int err;
> + struct mmc_command cmd = { 0 };
> + struct mmc_card *card = host->mmc->card;
> +
> + cmd.opcode = MMC_SELECT_CARD;
> +
> + if (card) {
> + cmd.arg = card->rca << 16;
> + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
> + } else {
> + cmd.arg = 0;
> + cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
> + }
> +
> + err = mmc_wait_for_cmd(host->mmc, &cmd, 0);
> + if (err == -EILSEQ) {
> + host_cmddat_line_reset(host);
> +
> + memset(&cmd, 0, sizeof(struct mmc_command));
> + cmd.opcode = 5;
> + cmd.arg = 0;
> + cmd.flags =
> + MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR;
> +
> + mmc_wait_for_cmd(host->mmc, &cmd, 0);
> +
> + pr_err("BHT ERR:%s: CMD7 CRC\n", __func__);
> + host_cmddat_line_reset(host);
> + return 0;
> + }
> + if (err == -ETIMEDOUT) {
> + pr_err("BHT ERR:%s: CMD7 timeout\n", __func__);
> + host_cmddat_line_reset(host);
> + return err;
> + }
> + return 0;
> +}
> +
> +static bool gg_emulator_read_ext(struct sdhci_host *host, bool *card_status,
> + bool *read_status, u8 *data, u32 datalen)
> +{
> + bool ret = false;
> + bool card_ret = true;
> + bool rd_ret = false;
> +
> + if (enter_exit_emulator_mode(host, true) == 0)
> + ret = true;
> + else
> + ret = false;
> + if (!ret)
> + goto exit;
> +
> + if (_gg_emulator_read_only(host, data, datalen) == 0)
> + rd_ret = true;
> + else
> + rd_ret = false;
> +
> + if (enter_exit_emulator_mode(host, false) == 0)
> + ret = true;
> + else
> + ret = false;
> +
> + if (!ret)
> + goto exit;
> +
> + if (gg_select_card_spec(host) == 0)
> + card_ret = true;
> + else
> + card_ret = false;
> +
> + if (!rd_ret)
> + pr_err("BHT ERR:GGC read status error\n");
> +
> +exit:
> + if (!card_ret) {
> + pr_err("BHT ERR:GGC Emulator exit Fail!!\n");
> + ret = false;
> + }
> +
> + if (card_status)
> + *card_status = ret;
> +
> + if (read_status)
> + *read_status = rd_ret;
> +
> + if (rd_ret && !ret)
> + pr_err("BHT ERR:data read ok, but exit NG\n");
> + else if (!rd_ret && ret)
> + pr_err("BHT ERR:data read NG, but exit ok\n");
> +
> + return ret;
> +}
> +
> +static void _status_bit_2_bt(int tar, int *byt, int *bit)
> +{
> + *byt = tar / 8;
> + *bit = tar % 8;
> +}
> +
> +static u32 _read_status_data_read_register(u8 *cfg, struct ggc_reg_op *bts)
> +{
> + u32 rv = 0;
> + u32 msk = bts->mask;
> + int byt = 0, bit = 0;
> + int i = 0;
> +
> + do {
> + _status_bit_2_bt(bts->ofs + i, &byt, &bit);
> + if (cfg[byt] & (1 << bit))
> + rv |= 1 << i;
> +
> + i++;
> + msk >>= 1;
> + if (msk == 0)
> + break;
> + } while (1);
> + return rv;
> +}
> +
> +static bool ggc_read_registers_ext(struct sdhci_host *host,
> + bool *card_status, bool *read_status,
> + struct ggc_reg_op *gg_reg_arr, u8 num)
> +{
> + u8 get_idx = 0;
> + bool ret = false;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + if (read_status)
> + *read_status = false;
> + if (card_status)
> + *card_status = false;
> +
> + memset(ggc->cur_read_buf, 0, 512);
> + ret = gg_emulator_read_ext(host, card_status, read_status, ggc->cur_read_buf, 512);
> + if (read_status == false)
> + goto exit;
> +
> + for (get_idx = 0; get_idx < num; get_idx++)
> + (gg_reg_arr + get_idx)->value =
> + _read_status_data_read_register(ggc->cur_read_buf, (gg_reg_arr + get_idx));
> +
> +exit:
> + return ret;
> +}
> +
> +static bool gg_emulator_read(struct sdhci_host *host, u8 *data, u32 datalen)
> +{
> + bool ret = false;
> + bool rd_ret = false;
> +
> + ret = enter_exit_emulator_mode(host, true);
> + if (ret)
> + goto exit;
> +
> + rd_ret = _gg_emulator_read_only(host, data, datalen);
> +
> + ret = enter_exit_emulator_mode(host, false);
> + if (ret)
> + goto exit;
> +
> + ret = gg_select_card_spec(host);
> +
> +exit:
> + if (rd_ret)
> + pr_err("BHT ERR:GGC read status error\n");
> +
> + if (ret)
> + pr_err("BHT ERR:GGC Emulator exit Fail!!\n");
> +
> + if (rd_ret == 0 && ret) {
> + pr_err("BHT ERR:data read ok, but exit NG\n");
> + ret = 0;
> + }
> +
> + if (rd_ret && ret == 0) {
> + pr_err("BHT ERR:data read NG, but exit ok\n");
> + ret = -1;
> + }
> +
> + return ret ? false : true;
> +}
> +
> +static bool _ggc_emulator_write_only(struct sdhci_host *host,
> + u8 *in_data, u32 datalen)
> +{
> + struct mmc_host *mmc = host->mmc;
> + int rc = 0;
> + u8 *data1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
> + struct mmc_request mrq = { 0 };
> + struct mmc_command cmd = { 0 };
> + struct mmc_data data = { 0 };
> + struct scatterlist sg;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + if (!data1) {
> + pr_err("BHT MSG:gg write no memory\n");
> + rc = -ENOMEM;
> + goto out;
> + }
> +
> + memcpy(data1, in_data, datalen);
> + sg_init_one(&sg, data1, 512);
> +
> + cmd.opcode = MMC_WRITE_BLOCK;
> + cmd.arg = 0;
> + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
> + data.blksz = 512;
> + data.blocks = 1;
> + data.flags = MMC_DATA_WRITE;
> + data.timeout_ns = 1000 * 1000 * 1000;
> + data.sg = &sg;
> + data.sg_len = 1;
> + mrq.cmd = &cmd;
> + mrq.data = &data;
> + mrq.stop = NULL;
> +
> + mmc_wait_for_req(mmc, &mrq);
> +
> + if (cmd.error == -EILSEQ)
> + ggc->sdr50_notuning_crc_error_flag = 1;
> +
> + kfree(data1);
> +out:
> + return rc;
> +}
> +
> +static bool gg_emulator_write(struct sdhci_host *host, u8 *data, u32 datalen)
> +{
> + bool ret = false;
> + bool wr_ret = false;
> + u32 i = 0;
> + u32 reg;
> +
> + ret = enter_exit_emulator_mode(host, true);
> + if (ret)
> + goto exit;
> +
> + pr_debug("BHT MSG: dump config data\n");
> + for (i = 0; i < (datalen/sizeof(u32)); i++) {
> + memcpy(&reg, data+i*sizeof(u32), sizeof(u32));
> + pr_debug("BHT MSG:\tggc_reg32[%03d]=0x%08x\n", i, reg);
> + }
> +
> + _ggc_emulator_write_only(host, data, datalen);
> + wr_ret = true;
> +
> + ret = enter_exit_emulator_mode(host, false);
> + if (ret)
> + goto exit;
> +
> + ret = gg_select_card_spec(host);
> +
> +exit:
> + if (wr_ret == false)
> + ret = false;
> +
> + if (ret == false)
> + pr_err("BHT ERR:%s: GGC Emulator Write Fail!!\n", __func__);
> +
> + return ret;
> +}
> +
> +static bool get_gg_reg_cur(struct sdhci_host *host, u8 *data,
> + struct ggc_reg_op *gg_reg_arr, u8 num)
> +{
> + u8 get_idx = 0;
> + bool ret = false;
> +
> + /* read ggc register */
> + memset(data, 0, 512);
> + ret = gg_emulator_read(host, data, 512);
> +
> + if (ret == false)
> + goto exit;
> +
> + /* read the offset bits value */
> + for (get_idx = 0; get_idx < num; get_idx++) {
> + (gg_reg_arr + get_idx)->value =
> + read_ram_bits_ofs_mask(data, (gg_reg_arr + get_idx));
> + }
> +exit:
> + return ret;
> +}
> +
> +static void chg_gg_reg_cur_val(struct sdhci_bht_host *ggc, u8 *data,
> + struct ggc_reg_op *gg_reg_arr, u8 num, bool b_sav_chg)
> +{
> + u8 chg_idx = 0;
> +
> + for (chg_idx = 0; chg_idx < num; chg_idx++) {
> + /* modify the ggc register bit value */
> + cfg_write_bits_ofs_mask(data, (gg_reg_arr + chg_idx),
> + (gg_reg_arr + chg_idx)->value);
> + }
> +
> + if (b_sav_chg)
> + set_gg_reg_cur_val(ggc, data, 64);
> +}
> +
> +static void log_bin(u32 n)
> +{
> + int i = 0;
> + u8 tb[33] = { 0 };
> +
> + for (i = 0; i < 32; i++) {
> + if (n & (1 << i))
> + tb[i] = '1';
> + else
> + tb[i] = '0';
> + }
> + pr_debug("BHT MSG:bin:%s\n", tb);
> +}
> +
> +static void phase_str(u8 *tb, u32 n)
> +{
> + int i = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (n & (1 << i))
> + tb[i] = '1';
> + else
> + tb[i] = '0';
> + }
> + tb[TUNING_PHASE_SIZE] = 0;
> +}
> +
> +static int get_bit_number(u32 n)
> +{
> + int i = 0;
> + int cnt = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (n & (1 << i))
> + cnt++;
> + }
> + return cnt;
> +}
> +
> +static bool gg_emulator_write_ext(struct sdhci_host *host, bool *card_status, u8 *data, u32 datalen)
> +{
> + bool ret = false;
> + bool wr_ret = false;
> +
> + ret = enter_exit_emulator_mode(host, true);
> + if (ret)
> + goto exit;
> +
> + _ggc_emulator_write_only(host, data, datalen);
> + wr_ret = true;
> +
> + ret = enter_exit_emulator_mode(host, false);
> + if (ret)
> + goto exit;
> +
> + ret = (gg_select_card_spec(host) == 0) ? true : false;
> + if (ret == false) {
> + if (card_status)
> + *card_status = false;
> + }
> +
> +exit:
> + if (wr_ret == false)
> + ret = false;
> +
> + if (ret == false)
> + pr_err("BHT ERR:%s: GGC Emulator Write Fail!!\n", __func__);
> +
> + return ret;
> +}
> +
> +static bool ggc_set_output_tuning_phase_ext(struct sdhci_host *host,
> + bool *card_status, int sela, int selb)
> +{
> + bool ret = true;
> + u8 data[512] = { 0 };
> + struct ggc_reg_op gg_reg_arr[8];
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + get_gg_reg_cur_val(ggc, data, 64);
> + memcpy(&gg_reg_arr[0], &ggc->dll_sela_100m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[1], &ggc->dll_sela_200m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[2], &ggc->dll_selb_100m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[3], &ggc->dll_selb_200m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[4], &ggc->dll_selb_100m_cfg_en,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[5], &ggc->dll_selb_200m_cfg_en,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[6], &ggc->internl_tuning_en_100m,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[7], &ggc->internl_tuning_en_200m,
> + sizeof(struct ggc_reg_op));
> + gg_reg_arr[0].value = sela;
> + gg_reg_arr[1].value = sela;
> + gg_reg_arr[2].value = selb;
> + gg_reg_arr[3].value = selb;
> + gg_reg_arr[4].value = 1;
> + gg_reg_arr[5].value = 1;
> + gg_reg_arr[6].value = 1;
> + gg_reg_arr[7].value = 1;
> + if (card_status)
> + *card_status = true;
> + chg_gg_reg_cur_val(ggc, data, gg_reg_arr, 8, true);
> + ret = gg_emulator_write_ext(host, card_status, data, 512);
> + return ret;
> +}
> +
> +static bool gg_fix_output_tuning_phase(struct sdhci_host *host, int sela, int selb)
> +{
> + u8 data[512] = { 0 };
> + struct ggc_reg_op gg_reg_arr[10];
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + pr_debug("BHT MSG: %s - sela dll: %x, selb dll: %x\n", __func__, sela,
> + selb);
> +
> + get_gg_reg_cur_val(ggc, data, 64);
> +
> + memcpy(&gg_reg_arr[0], &ggc->dll_sela_100m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[1], &ggc->dll_sela_200m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[2], &ggc->dll_selb_100m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[3], &ggc->dll_selb_200m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[4], &ggc->dll_selb_100m_cfg_en,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[5], &ggc->dll_selb_200m_cfg_en,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[6], &ggc->internl_tuning_en_100m,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[7], &ggc->internl_tuning_en_200m,
> + sizeof(struct ggc_reg_op));
> + gg_reg_arr[0].value = sela;
> + gg_reg_arr[1].value = sela;
> + gg_reg_arr[2].value = selb;
> + gg_reg_arr[3].value = selb;
> + gg_reg_arr[4].value = 1;
> + gg_reg_arr[5].value = 1;
> + gg_reg_arr[6].value = 0;
> + gg_reg_arr[7].value = 0;
> +
> + chg_gg_reg_cur_val(ggc, data, gg_reg_arr, 8, true);
> +
> + return gg_emulator_write(host, data, 512);
> +}
> +
> +static void gen_array_data(u32 low32, u32 high32, u32 *ptw)
> +{
> + u8 tu_res_per[6][TUNING_PHASE_SIZE];
> + u8 i = 0, j = 0;
> + u8 i_mode = 0;
> + u32 tw = 0;
> +
> + memset(tu_res_per, 1, sizeof(tu_res_per));
> + for (i = 0; i < 64; i++) {
> + u32 tmp_data = (i < 32) ? low32 : high32;
> +
> + tu_res_per[i / TUNING_PHASE_SIZE][i % TUNING_PHASE_SIZE] =
> + (tmp_data & (1 << (i % 32))) >> (i % 32);
> + }
> +
> + for (i_mode = 0; i_mode < TUNING_PHASE_SIZE; i_mode++) {
> + for (j = 0; j < 6; j++) {
> + if (tu_res_per[j][i_mode] != 0)
> + tw |= (1 << i_mode);
> + else {
> + tw &= ~(1 << i_mode);
> + break;
> + }
> + }
> + }
> + if (ptw)
> + *ptw = tw;
> +}
> +
> +static bool sw_calc_tuning_result(struct sdhci_host *host, u32 *tx_selb,
> + u32 *all_selb, u64 *raw_tx_selb)
> +{
> + bool ret = false;
> + u8 data[512] = { 0 };
> + u32 selb_status_tx_low32 = 0, selb_status_tx_high32 = 0;
> + u32 selb_status_ggc_low32 = 0, selb_status_ggc_high32 = 0;
> + struct ggc_reg_op gg_reg_arr[6];
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + memcpy(&gg_reg_arr[0], &ggc->pha_stas_tx_low32, sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[1], &ggc->pha_stas_tx_high32, sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[2], &ggc->pha_stas_rx_low32, sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[3], &ggc->pha_stas_rx_high32, sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[4], &ggc->dll_sela_after_mask, sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[5], &ggc->dll_selb_after_mask, sizeof(struct ggc_reg_op));
> +
> + ret = get_gg_reg_cur(host, data, gg_reg_arr, 6);
> +
> + if (ret == true) {
> + selb_status_tx_low32 = gg_reg_arr[0].value;
> + pr_debug("BHT MSG:[205-236]:\n");
> + log_bin(selb_status_tx_low32);
> + selb_status_tx_high32 = gg_reg_arr[1].value;
> + pr_debug("BHT MSG:[237-268]:\n");
> + log_bin(selb_status_tx_high32);
> + selb_status_ggc_low32 = gg_reg_arr[2].value;
> + pr_debug("BHT MSG:[14-45]:\n");
> + log_bin(selb_status_ggc_low32);
> + selb_status_ggc_high32 = gg_reg_arr[3].value;
> + pr_debug("BHT MSG:[46-77]:\n");
> + log_bin(selb_status_ggc_high32);
> + pr_debug("BHT MSG:dll sela after mask=%xh\n", gg_reg_arr[4].value);
> + pr_debug("BHT MSG:dll selb after mask=%xh\n", gg_reg_arr[5].value);
> +
> + if (raw_tx_selb) {
> + *raw_tx_selb = gg_reg_arr[1].value;
> + (*raw_tx_selb) <<= 32;
> + *raw_tx_selb += gg_reg_arr[0].value;
> + pr_debug("BHT MSG:raw_tx_selb:%llxh\n", *raw_tx_selb);
> + }
> +
> + if (tx_selb) {
> + gen_array_data(gg_reg_arr[0].value, gg_reg_arr[1].value,
> + tx_selb);
> + pr_debug("BHT MSG:tx_selb:%xh\n", *tx_selb);
> + }
> + if (all_selb) {
> + gen_array_data(gg_reg_arr[2].value, gg_reg_arr[3].value,
> + all_selb);
> + pr_debug("BHT MSG:all_selb:%xh\n", *all_selb);
> + }
> + }
> +
> + return ret;
> +}
> +
> +static bool gg_tuning_result(struct sdhci_host *host, u32 *tx_selb, u32 *all_selb,
> + u64 *raw_tx_selb)
> +{
> + host_cmddat_line_reset(host);
> + return sw_calc_tuning_result(host, tx_selb, all_selb, raw_tx_selb);
> +}
> +
> +static u64 GENERATE_64_IDX_VALUE(int sft)
> +{
> + u64 val = 1;
> +
> + return val << sft;
> +}
> +
> +static bool is_bus_mode_sdr104(struct sdhci_host *host)
> +{
> + bool ret = false;
> +
> + if (host->timing == MMC_TIMING_UHS_SDR104)
> + ret = true;
> +
> + return ret;
> +}
> +
> +static bool _check_bus_mode(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + if (is_bus_mode_sdr104(host))
> + ggc->cur_bus_mode = &ggc->sdr104;
> + else
> + ggc->cur_bus_mode = &ggc->sdr50;
> +
> + return true;
> +}
> +
> +static void tx_selb_failed_history_update(struct sdhci_host *host, u32 val)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + _check_bus_mode(host);
> +
> + ggc->cur_bus_mode->tx_selb_failed_history &= val;
> +}
> +
> +static u32 tx_selb_failed_history_get(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + _check_bus_mode(host);
> +
> + return ggc->cur_bus_mode->tx_selb_failed_history;
> +}
> +
> +static void tx_selb_failed_tb_update(struct sdhci_host *host, int sela, u32 val)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + _check_bus_mode(host);
> + ggc->cur_bus_mode->tx_selb_tb[sela] &= val;
> +}
> +
> +static u32 tx_selb_failed_tb_get(struct sdhci_host *host, int sela)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + u32 value = 0;
> +
> + _check_bus_mode(host);
> +
> + if (is_bus_mode_sdr104(host))
> + value = ggc->sdr104.tx_selb_tb[sela];
> + else
> + value = ggc->sdr50.tx_selb_tb[sela];
> +
> + return value;
> +}
> +
> +static void all_selb_failed_tb_update(struct sdhci_host *host, int sela, u32 val)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + _check_bus_mode(host);
> + ggc->cur_bus_mode->all_selb_tb[sela] &= val;
> +}
> +
> +static u32 all_selb_failed_tb_get(struct sdhci_host *host, int sela)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + u32 val;
> +
> + _check_bus_mode(host);
> +
> + val = ggc->cur_bus_mode->all_selb_tb[sela];
> +
> + return val;
> +}
> +
> +static void chk_phase_window(u8 *tuning_win, u8 *mid_val, u8 *max_pass_win)
> +{
> + u8 tuning_pass[TUNING_PHASE_SIZE + 32];
> + u8 tuning_pass_start[TUNING_PHASE_SIZE + 32];
> + u8 tuning_pass_num_max = 0;
> + u8 first_0 = 0;
> + u8 i = 0, j = 0;
> + u8 i_mode = 0, selb_mode = 0;
> +
> + memset(tuning_pass, 1, sizeof(tuning_pass));
> + memset(tuning_pass_start, 1, sizeof(tuning_pass_start));
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (tuning_win[i] == 0) {
> + first_0 = i;
> + break;
> + }
> + }
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + i_mode = (first_0 + i) % TUNING_PHASE_SIZE;
> + if (tuning_win[i_mode] == 1)
> + tuning_pass[j]++;
> + else if (tuning_pass[j])
> + j++;
> + if (tuning_pass[j] == 1)
> + tuning_pass_start[j] = i_mode;
> + }
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (tuning_pass_num_max < tuning_pass[i]) {
> + tuning_pass_num_max = tuning_pass[i];
> + i_mode = i;
> + }
> + }
> +
> + if (tuning_pass_num_max == 0)
> + pr_err
> + ("Get max pass window fail, there is no any pass phase!!\n");
> + else {
> + *max_pass_win = tuning_pass_num_max - 1;
> + tuning_pass_num_max /= 2;
> + selb_mode = tuning_pass_start[i_mode] + tuning_pass_num_max;
> + if ((*max_pass_win % 2 == 0))
> + selb_mode += 1;
> + selb_mode %= TUNING_PHASE_SIZE;
> + }
> +
> + *mid_val = selb_mode;
> +}
> +
> +static void dump_array(u8 *tb)
> +{
> + int i = 0;
> + u8 str[12] = { 0 };
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++)
> + str[i] = tb[i] + '0';
> +}
> +
> +static void bits_generate_array(u8 *tb, u32 v)
> +{
> + int i = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if ((v & (1 << i)))
> + tb[i] = 1;
> + else
> + tb[i] = 0;
> + }
> + dump_array(tb);
> +}
> +
> +static int ggc_get_selx_weight(u32 val)
> +{
> + int i = 0;
> + int cnt = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(val, i))
> + cnt++;
> + }
> + return cnt;
> +}
> +
> +static void tx_selb_calculate_valid_phase_range(u32 val, int *start,
> + int *pass_cnt)
> +{
> + int i = 0, flg = 0;
> +
> + *pass_cnt = ggc_get_selx_weight(val);
> + for (i = 0; i < (TUNING_PHASE_SIZE * 2); i++) {
> + if ((GET_TUNING_RING_IDX_VALUE(val, i)) == 0 && (flg == 0))
> + flg = 1;
> + if ((flg == 1) && GET_TUNING_RING_IDX_VALUE(val, i)) {
> + *start = TUNING_RING_IDX(i);
> + break;
> + }
> + }
> +}
> +
> +static bool ggc_update_default_selb_phase_tuning_cnt(struct sdhci_host *host, int selb,
> + int tuning_cnt)
> +{
> + struct ggc_reg_op gg_reg_arr[3];
> + u8 data[512];
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + get_gg_reg_cur_val(ggc, data, 64);
> +
> + pr_debug("BHT MSG: selb:%xh,tuning_cnt:%xh\n", selb,
> + tuning_cnt);
> + memcpy(&gg_reg_arr[0], &ggc->dll_selb_100m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[1], &ggc->dll_selb_200m_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[2], &ggc->cmd19_cnt_cfg,
> + sizeof(struct ggc_reg_op));
> +
> + gg_reg_arr[0].value = selb;
> + gg_reg_arr[1].value = selb;
> + gg_reg_arr[2].value = tuning_cnt;
> + chg_gg_reg_cur_val(ggc, data, gg_reg_arr, 3, true);
> +
> + return true;
> +}
> +
> +static void _ggc_update_cur_setting_for_sw_selb_tuning(struct sdhci_host *host,
> + u32 val)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + int start = 0, pass_cnt = 0;
> +
> + tx_selb_calculate_valid_phase_range(val, &start, &pass_cnt);
> + pr_debug("BHT MSG:%s %x %x %x\n", __func__, val, start, pass_cnt);
> + ggc_update_default_selb_phase_tuning_cnt(host, start, pass_cnt); //update
> + ggc->ggc_sw_selb_tuning_first_selb = start;
> +}
> +
> +static int sdhci_bht_sdr50_execute_tuning(struct sdhci_host *host, u32 opcode)
> +{
> +
> + u8 phase, *data_buf;
> + int size = 64;
> + int rc = 0;
> + struct mmc_host *mmc = host->mmc;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + pr_debug("%s: Enter %s\n", mmc_hostname(mmc), __func__);
> +
> + data_buf = kmalloc(size, GFP_KERNEL);
> +
> + phase = 0;
> + do {
> + struct mmc_command cmd = { 0 };
> + struct mmc_data data = { 0 };
> + struct mmc_request mrq = {
> + .cmd = &cmd,
> + .data = &data
> + };
> + struct scatterlist sg;
> +
> + cmd.opcode = opcode;
> + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
> +
> + data.blksz = size;
> + data.blocks = 1;
> + data.flags = MMC_DATA_READ;
> + data.timeout_ns = 30 * 1000 * 1000; /* 30ms */
> +
> + data.sg = &sg;
> + data.sg_len = 1;
> + sg_init_one(&sg, data_buf, size);
> + memset(data_buf, 0, size);
> + host_cmddat_line_reset(host);
> + mmc_wait_for_req(mmc, &mrq);
> +
> + if (cmd.error) {
> + if (cmd.error == -EILSEQ)
> + ggc->sdr50_notuning_crc_error_flag = 1;
> + if (cmd.error == -ETIMEDOUT && phase == 0) {
> + pr_err("BHT ERR:cmd19 timeout\n");
> + rc = -ETIMEDOUT;
> + goto kfree;
> + }
> + }
> +
> + if (data.error) {
> + if (data.error == -EILSEQ)
> + ggc->sdr50_notuning_crc_error_flag = 1;
> + }
> + } while (++phase < 16);
> +
> +kfree:
> + kfree(data_buf);
> +
> + return rc;
> +}
> +
> +static int get_config_sela_setting(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + if (is_bus_mode_sdr104(host))
> + return ggc->def_sela_200m;
> + else
> + return ggc->def_sela_100m;
> +}
> +
> +static int get_config_selb_setting(struct sdhci_host *host)
> +{
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + if (is_bus_mode_sdr104(host))
> + return ggc->def_selb_200m;
> + else
> + return ggc->def_selb_100m;
> +}
> +
> +static int get_left_one_sel(int base)
> +{
> + if (base == 0)
> + return 0xa;
> + else
> + return base - 1;
> +}
> +
> +static int get_right_one_sel(int base)
> +{
> + if (base == 0xa)
> + return 0x0;
> + else
> + return base + 1;
> +}
> +
> +static int update_selb(struct sdhci_host *host, int target_selb)
> +{
> + return target_selb;
> +}
> +
> +static int ggc_get_10case_0_index(u32 val)
> +{
> + int i = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(val, i) == 0
> + && GET_IDX_VALUE(val,
> + TUNING_RING_IDX(i + TUNING_PHASE_SIZE -
> + 1))) {
> + return i;
> + }
> + }
> +
> + return -1;
> +}
> +
> +static u32 ggc_get_01case_0_index(u32 val)
> +{
> + int i = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(val, i) == 0
> + && GET_IDX_VALUE(val, TUNING_RING_IDX(i + 1))) {
> + return i;
> + }
> + }
> +
> + return -1;
> +}
> +
> +static int ggc_get_next_1_index(u32 val, int pos)
> +{
> + int i = 0;
> +
> + pos = pos % TUNING_PHASE_SIZE;
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(val, (pos+i)%TUNING_PHASE_SIZE))
> + break;
> + }
> + if (GET_IDX_VALUE(val, (pos+i)%TUNING_PHASE_SIZE))
> + return (pos+i)%TUNING_PHASE_SIZE;
> + else
> + return -1;
> +}
> +
> +static u32 ggc_get_01case_1_index(u32 val)
> +{
> + int i = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(val, i) == 0
> + && GET_IDX_VALUE(val, TUNING_RING_IDX(i + 1))) {
> + return TUNING_RING_IDX(i + 1);
> + }
> + }
> +
> + return -1;
> +}
> +
> +static int ggc_get_first_0_index(u32 val)
> +{
> + int i = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(val, i) == 0)
> + return i;
> + }
> + pr_debug("BHT MSG:oops-not find 0 index\n");
> + return 0;
> +}
> +
> +static int _tx_selb_inject_policy(int tx_selb, int org_selb)
> +{
> + int group_pos[TUNING_PHASE_SIZE+1][3];
> + int group_cnt = 0;
> + int max_len_group = 0;
> + int max_len = 0;
> + int i, j, cnt;
> + int zero_start, zero_end, sel;
> +
> + if ((org_selb & BIT_PASS_MASK) != BIT_PASS_MASK) {
> + sel = tx_selb;
> + zero_start = ggc_get_10case_0_index(sel);
> + sel &=
> + ~GENERATE_TUNING_RING_IDX_VALUE(get_left_one_sel
> + (zero_start));
> + zero_end = ggc_get_01case_0_index(sel);
> + sel &=
> + ~GENERATE_TUNING_RING_IDX_VALUE(get_right_one_sel
> + (zero_end));
> + if (sel != (sel & tx_selb)) {
> + pr_err
> + ("tx selb reinject exception case :not adjacent phase\n");
> + pr_err("BHT ERR:selb_failed range:%xh ,new tx_selb:%x\n",
> + org_selb, tx_selb);
> + }
> + org_selb &= tx_selb;
> + } else {
> + cnt = ggc_get_selx_weight(~tx_selb);
> + pr_debug("BHT MSG:%d\n", cnt);
> + switch (cnt) {
> + case 1:
> + i = ggc_get_first_0_index(tx_selb);
> + tx_selb &=
> + ~GENERATE_TUNING_RING_IDX_VALUE(get_right_one_sel
> + (i));
> + tx_selb &=
> + ~GENERATE_TUNING_RING_IDX_VALUE(get_left_one_sel
> + (i));
> +
> + break;
> + case 2:
> + i = ggc_get_10case_0_index(tx_selb);
> + tx_selb &=
> + ~GENERATE_TUNING_RING_IDX_VALUE(get_left_one_sel
> + (i));
> + i = ggc_get_01case_0_index(tx_selb);
> + tx_selb &=
> + ~GENERATE_TUNING_RING_IDX_VALUE(get_right_one_sel
> + (i));
> + break;
> + default:
> + pr_debug("BHT MSG:>= 3 point case\n");
> + }
> + org_selb &= tx_selb;
> + }
> +
> + pr_debug("BHT MSG:will check continuous 0bits: 0x%x\n", org_selb);
> +
> + memset(group_pos, 0, sizeof(group_pos));
> + for (i = ggc_get_01case_1_index(org_selb);
> + i < TUNING_PHASE_SIZE && i >= 0 && group_cnt < TUNING_PHASE_SIZE;) {
> + for (j = 1; j < TUNING_PHASE_SIZE; j++) {
> + if (GET_TUNING_RING_IDX_VALUE(org_selb, i+j) != 0)
> + continue;
> + else
> + break;
> + }
> + group_pos[group_cnt][0] = i;
> + group_pos[group_cnt][1] = (i + j - 1) % TUNING_PHASE_SIZE;
> + group_pos[group_cnt][2] = j;
> + group_cnt++;
> + if (group_pos[group_cnt-1][0] > group_pos[group_cnt-1][1])
> + break;
> + i = ggc_get_next_1_index(org_selb, (i+j)%TUNING_PHASE_SIZE);
> + for (j = 0; j < group_cnt; j++) {
> + if (i == group_pos[j][0])
> + break;
> + }
> + if (j < group_cnt)
> + break;
> + }
> +
> + if (group_cnt > 1) {
> + pr_err("BHT ERR:After inject, selb 0x%x has %d continuous 0 bits\n",
> + org_selb, group_cnt);
> +
> + for (i = 0; i < group_cnt; i++) {
> + if (max_len < group_pos[i][2]) {
> + max_len = group_pos[i][2];
> + max_len_group = i;
> + }
> + }
> + for (i = (group_pos[max_len_group][1] + 1) % TUNING_PHASE_SIZE;
> + i != group_pos[max_len_group][0]; i = (i+1)%TUNING_PHASE_SIZE) {
> + org_selb &= ~(1 << i);
> + }
> + pr_err("BHT ERR:After merge incontious 0 group, selb changed to 0x%x\n", org_selb);
> + } else if (group_cnt > 0) {
> + pr_err("BHT ERR:After merge incontious 0 group, selb = 0x%x\n", org_selb);
> + } else {
> + pr_err("BHT ERR:selb 0x%x has no bit is 0\n", org_selb);
> + }
> +
> + return org_selb;
> +}
> +
> +static void tx_selb_inject_policy(struct sdhci_host *host, int tx_selb)
> +{
> +
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + pr_debug("BHT MSG:before inject, failed ragen 0x%x, tx_selb 0x%x\n",
> + ggc->ggc_cmd_tx_selb_failed_range, tx_selb);
> + ggc->ggc_cmd_tx_selb_failed_range =
> + _tx_selb_inject_policy(tx_selb, ggc->ggc_cmd_tx_selb_failed_range);
> + tx_selb_failed_history_update(host, ggc->ggc_cmd_tx_selb_failed_range);
> + pr_debug("BHT MSG:after inject %xh range:%xh\n", tx_selb,
> + ggc->ggc_cmd_tx_selb_failed_range);
> + if (is_bus_mode_sdr104(host))
> + ggc->sdr104.fail_phase = ggc->ggc_cmd_tx_selb_failed_range;
> + else
> + ggc->sdr50.fail_phase = ggc->ggc_cmd_tx_selb_failed_range;
> +}
> +
> +static int get_selb_failure_point(int start, u64 raw_tx_selb, int tuning_cnt)
> +{
> + int last = start + (tuning_cnt - 1);
> + int i = 0;
> + int j = 0;
> + int phase = start;
> + int vct = BIT_PASS_MASK;
> +
> + pr_debug("BHT MSG:%s start:%d tuning_cnt:%d\n", __func__, start,
> + tuning_cnt);
> +
> + for (i = 0; i < tuning_cnt; i++) {
> + if ((raw_tx_selb & GENERATE_64_IDX_VALUE(last - i)) == 0)
> + break;
> + }
> + if (i == tuning_cnt) {
> + phase = last % TUNING_PHASE_SIZE;
> + vct &= (~(1 << phase));
> + goto exit;
> + }
> +
> + for (i = 0; i < tuning_cnt; i++) {
> + if ((raw_tx_selb & GENERATE_64_IDX_VALUE(last - i)) != 0)
> + break;
> + }
> + for (j = i - 2; j >= 0; j--)
> + raw_tx_selb |= (1 << (last - j));
> +
> + for (j = 0; j < tuning_cnt; j++) {
> + if (0 == (raw_tx_selb & GENERATE_64_IDX_VALUE(last - j)))
> + vct &= (~(1 << (last-j)));
> + }
> +
> +exit:
> + pr_debug("BHT MSG:%s: after adjust raw_tx_selb: 0x%llx, vct 0x%x\n",
> + __func__, raw_tx_selb, vct);
> +
> + return vct;
> +}
> +
> +static bool selx_failure_point_exist(u32 val)
> +{
> + return (val & BIT_PASS_MASK) != BIT_PASS_MASK;
> +}
> +
> +static int _bits_vct_get_left_index(int base)
> +{
> + return TUNING_RING_IDX(base + TUNING_PHASE_SIZE - 1);
> +}
> +
> +static int _get_best_window_phase(u32 vct, int *pmax_pass_win, int shif_left_flg)
> +{
> + u8 tuning_win[TUNING_PHASE_SIZE] = { 0 };
> + u8 tuning_pass[TUNING_PHASE_SIZE];
> + int tuning_pass_start[TUNING_PHASE_SIZE];
> + int tuning_pass_num_max = 0;
> + int first_0 = 0;
> + int i = 0, j = 0;
> + int i_mode = 0, selb_mode = 0;
> +
> + memset(tuning_pass, 0, sizeof(tuning_pass));
> + memset(tuning_pass_start, 0, sizeof(tuning_pass_start));
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(vct, i))
> + tuning_win[i] = 1;
> + else
> + tuning_win[i] = 0;
> + }
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (tuning_win[i] == 0) {
> + first_0 = i;
> + break;
> + }
> + }
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + i_mode = TUNING_RING_IDX(first_0 + i);
> + if (tuning_win[i_mode] == 1)
> + tuning_pass[j]++;
> + else if (tuning_pass[j])
> + j++;
> + if (tuning_pass[j] == 1)
> + tuning_pass_start[j] = i_mode;
> + }
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (tuning_pass_num_max < tuning_pass[i]) {
> + tuning_pass_num_max = tuning_pass[i];
> + i_mode = i;
> + }
> + }
> +
> + if (tuning_pass_num_max == 0) {
> + pr_err("BHT ERR:Get max pass window fail, there is no any pass phase!!\n");
> + selb_mode = 0;
> + } else {
> + if (tuning_pass_num_max % 2) {
> + selb_mode = tuning_pass_start[i_mode] + (tuning_pass_num_max - 1) / 2;
> + } else {
> + selb_mode = tuning_pass_start[i_mode] + (tuning_pass_num_max) / 2;
> + if (shif_left_flg) {
> + selb_mode = _bits_vct_get_left_index(selb_mode);
> + pr_debug("BHT MSG:shift left index\n");
> + }
> + }
> + selb_mode = TUNING_RING_IDX(selb_mode);
> + }
> + if (pmax_pass_win)
> + *pmax_pass_win = tuning_pass_num_max;
> +
> + return selb_mode;
> +}
> +
> +
> +static int get_best_window_phase(u32 vct, int *pmax_pass_win)
> +{
> + return _get_best_window_phase(vct, pmax_pass_win, 0);
> +}
> +
> +static int _ggc_get_suitable_selb_for_next_tuning(struct sdhci_host *host)
> +{
> + int selb = 0;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + u32 inj_tx_selb = BIT_PASS_MASK;
> +
> + if (selx_failure_point_exist(ggc->ggc_cmd_tx_selb_failed_range)) {
> + selb = ggc->ggc_sw_selb_tuning_first_selb;
> + } else {
> + pr_debug("BHT MSG:manual inject for all pass case\n");
> + if (is_bus_mode_sdr104(host))
> + inj_tx_selb &= SDR104_MANUAL_INJECT;
> + else
> + inj_tx_selb &= SDR50_MANUAL_INJECT;
> +
> + pr_debug("BHT MSG:manual inject for all pass case, inj_tx_selb=0x%x\n",
> + inj_tx_selb);
> + selb = get_best_window_phase(inj_tx_selb, NULL);
> + pr_debug("BHT MSG:select selb %d for all pass case\n", selb);
> + }
> + return selb;
> +}
> +
> +static int ggc_get_tuning_cnt_from_buffer(struct sdhci_host *host)
> +{
> + int cnt = 0;
> + u8 data[512];
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + get_gg_reg_cur_val(ggc, data, 64);
> + cnt = (int)cfg_read_bits_ofs_mask(data, &ggc->cmd19_cnt_cfg);
> +
> + pr_debug("BHT MSG:tuning cnt=%d\n", cnt);
> + return cnt;
> +}
> +
> +static bool ggc_hw_inject_ext(struct sdhci_host *host, bool *card_status,
> + u32 sel200, u32 sel100, bool writetobh201)
> +{
> + bool ret = true;
> + u8 data[512];
> + struct ggc_reg_op gg_reg_arr[10];
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + u32 i = 0;
> + u32 reg;
> +
> + pr_debug("BHT MSG:%s sel200:%xh,sel100:%xh\n", __func__, sel200, sel100);
> + get_gg_reg_cur_val(ggc, data, 64);
> + memcpy(&gg_reg_arr[0], &ggc->inject_failure_for_tuning_enable_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[1], &ggc->inject_failure_for_200m_tuning_cfg,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[2], &ggc->inject_failure_for_100m_tuning_cfg,
> + sizeof(struct ggc_reg_op));
> + gg_reg_arr[0].value = 1;
> + gg_reg_arr[1].value = sel200;
> + gg_reg_arr[2].value = sel100;
> +
> + chg_gg_reg_cur_val(ggc, data, gg_reg_arr, 3, true);
> + if (writetobh201)
> + ret = gg_emulator_write_ext(host, card_status, data, 512);
> + else {
> + pr_debug("BHT MSG:%s: dump config data instead write to bh201\n", __func__);
> + for (i = 0; i < 128; i++) {
> + memcpy(&reg, data+i*sizeof(u32), sizeof(u32));
> + pr_debug("BHT MSG: ggc_reg32[%03d]=0x%08x\n", i, reg);
> + }
> + }
> + return ret;
> +}
> +
> +static bool _ggc_hw_inject_may_recursive(struct sdhci_host *host, u32 sel200,
> + u32 sel100, int max_recur, bool writetobh201)
> +{
> + bool ret = true, card_status = true;
> + int selb = BIT_PASS_MASK;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + ret = ggc_hw_inject_ext(host, &card_status, ggc->ggc_cmd_tx_selb_failed_range,
> + ggc->ggc_cmd_tx_selb_failed_range, writetobh201);
> + pr_debug("BHT MSG:ret:%x\n", ret);
> + if ((ret == false) && (card_status == false)) {
> + pr_debug("BHT MSG:inject again when hw inject\n");
> + selb &= ~GENERATE_IDX_VALUE(ggc->ggc_sw_selb_tuning_first_selb);
> + tx_selb_inject_policy(host, selb);
> + _ggc_update_cur_setting_for_sw_selb_tuning(host,
> + ggc->ggc_cmd_tx_selb_failed_range);
> +
> + if (((11 - get_bit_number(ggc->ggc_cmd_tx_selb_failed_range)) >= 5)) {
> + pr_err("BHT ERR:pass windows too small,reinit recursive\n");
> + return false;
> + }
> +
> + if (max_recur--)
> + return _ggc_hw_inject_may_recursive(host,
> + ggc->ggc_cmd_tx_selb_failed_range,
> + ggc->ggc_cmd_tx_selb_failed_range, max_recur, writetobh201);
> + else
> + return false;
> + } else
> + return true;
> +}
> +
> +static bool ggc_hw_inject_may_recursive(struct sdhci_host *host, u32 sel200,
> + u32 sel100, bool writetobh201)
> +{
> + return _ggc_hw_inject_may_recursive(host, sel200, sel100, 4, writetobh201);
> +}
> +
> +static bool get_next_dll_voltage(int cur, int *next, u32 *dll_voltage_unlock_cnt,
> + int *dll_voltage_scan_map)
> +{
> + int min_idx = 0, cur_cnt = 0, next_cnt = 0;
> + int cur_flg = 0;
> + int i = 0;
> + u8 ret = 0;
> +
> + pr_warn("BHT WARN:dll_voltage_unlock_cnt:%x %x %x %x\n",
> + dll_voltage_unlock_cnt[0], dll_voltage_unlock_cnt[1],
> + dll_voltage_unlock_cnt[2], dll_voltage_unlock_cnt[3]);
> + pr_warn("BHT WARN:dll_voltage_scan_map:%x %x %x %x\n",
> + dll_voltage_scan_map[0], dll_voltage_scan_map[1],
> + dll_voltage_scan_map[2], dll_voltage_scan_map[3]);
> + for (i = 1; i < 4; i++) {
> + if (cur_flg == 0) {
> + if (dll_voltage_scan_map[(cur + i) % 4] != 0)
> + continue;
> + cur_cnt = dll_voltage_unlock_cnt[(cur + i) % 4];
> + cur_flg = 1;
> + min_idx = (cur + i) % 4;
> + continue;
> + } else {
> + if (dll_voltage_scan_map[(cur + i) % 4] != 0)
> + continue;
> + next_cnt = dll_voltage_unlock_cnt[(cur + i) % 4];
> + if (cur_cnt > next_cnt) {
> + cur_cnt = next_cnt;
> + min_idx = (cur + i) % 4;
> + }
> + }
> + }
> + if (cur_flg == 0) {
> + pr_err("BHT ERR:no find available voltage\n");
> + ret = false;
> + } else {
> + *next = min_idx;
> + pr_err("BHT ERR:next available voltage %d\n", min_idx);
> + ret = true;
> + }
> + return ret;
> +}
> +
> +static bool ggc_sw_calc_tuning_result(struct sdhci_host *host, bool *card_status,
> + bool *read_status, u32 *tx_selb, u32 *all_selb, u64 *raw_tx_selb)
> +{
> + bool ret = false;
> + bool card_ret = false;
> + bool read_ret = false;
> + u32 selb_status_tx_low32 = 0, selb_status_tx_high32 = 0;
> + u32 selb_status_ggc_low32 = 0, selb_status_ggc_high32 = 0;
> + struct ggc_reg_op gg_reg_arr[8] = {{0}};
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> +
> + memcpy(&gg_reg_arr[0], &ggc->pha_stas_tx_low32,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[1], &ggc->pha_stas_tx_high32,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[2], &ggc->pha_stas_rx_low32,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[3], &ggc->pha_stas_rx_high32,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[4], &ggc->dll_sela_after_mask,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[5], &ggc->dll_selb_after_mask,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[6], &ggc->dll_delay_100m_backup,
> + sizeof(struct ggc_reg_op));
> + memcpy(&gg_reg_arr[7], &ggc->dll_delay_200m_backup,
> + sizeof(struct ggc_reg_op));
> +
> + ret = ggc_read_registers_ext(host, &card_ret, &read_ret, gg_reg_arr, 8);
> + if (read_ret == true) {
> + selb_status_tx_low32 = gg_reg_arr[0].value;
> + pr_debug("BHT MSG:[205-236]:\n");
> + log_bin(selb_status_tx_low32);
> + selb_status_tx_high32 = gg_reg_arr[1].value;
> + pr_debug("BHT MSG:[237-268]:\n");
> + log_bin(selb_status_tx_high32);
> + selb_status_ggc_low32 = gg_reg_arr[2].value;
> + pr_debug("BHT MSG:[14-45]:\n");
> + log_bin(selb_status_ggc_low32);
> + selb_status_ggc_high32 = gg_reg_arr[3].value;
> + pr_debug("BHT MSG:[46-77]:\n");
> + log_bin(selb_status_ggc_high32);
> + pr_debug("BHT MSG:dll sela after mask=%xh", gg_reg_arr[4].value);
> + pr_debug("BHT MSG:dll selb after mask=%xh", gg_reg_arr[5].value);
> +
> + if (raw_tx_selb) {
> + *raw_tx_selb = gg_reg_arr[1].value;
> + (*raw_tx_selb) <<= 32;
> + *raw_tx_selb += gg_reg_arr[0].value;
> + pr_debug("BHT MSG:raw_tx_selb:%llxh\n", *raw_tx_selb);
> + }
> +
> + if (tx_selb) {
> + gen_array_data(gg_reg_arr[0].value, gg_reg_arr[1].value,
> + tx_selb);
> + pr_debug("BHT MSG:tx_selb:%xh\n", *tx_selb);
> + }
> + if (all_selb) {
> + gen_array_data(gg_reg_arr[2].value, gg_reg_arr[3].value,
> + all_selb);
> + pr_debug("BHT MSG:all_selb:%xh\n", *all_selb);
> + }
> + }
> +
> + if (read_status)
> + (*read_status) = read_ret;
> + if (card_status)
> + (*card_status) = card_ret;
> +
> + if (card_status && read_status)
> + pr_debug("BHT MSG:card_status,read_status:%x %x\n", *card_status, *read_status);
> + return ret;
> +}
> +
> +static bool _ggc_calc_cur_sela_tuning_result(struct sdhci_host *host, int cur_sela, int start_selb)
> +{
> + bool read_status = false;
> + bool card_status = false;
> + bool ret = true;
> + u32 tx_selb, all_selb;
> + u64 raw_tx_selb = 0;
> + bool retuning_flg = false;
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + int selb;
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + enum tuning_state *psela_tuning_result = ggc->ggc_sela_tuning_result;
> +
> + ret = ggc_sw_calc_tuning_result(host, &card_status,
> + &read_status, &tx_selb, &all_selb, &raw_tx_selb);
> +
> + if (card_status == false) {
> + if (read_status == true) {
> + selb = get_selb_failure_point(start_selb, raw_tx_selb,
> + ggc_get_tuning_cnt_from_buffer(host));
> + pr_debug("BHT MSG:inject selb %03x for CMD7 read timeout\n", selb);
> + tx_selb_inject_policy(host, selb);
> + } else {
> + pr_debug("BHT MSG:%s dll:%xh read status failed\n",
> + __func__, cur_sela);
> + }
> + ret = false;
> + goto exit;
> + } else {
> + if (read_status == true) {
> + if (selx_failure_point_exist(tx_selb)) {
> + if ((11-get_bit_number(tx_selb)) <= 3) {
> + tx_selb_inject_policy(host, tx_selb);
> + all_selb_failed_tb_update(host, cur_sela, all_selb);
> + tx_selb_failed_tb_update(host, cur_sela, tx_selb);
> + tx_selb_failed_history_update(host, tx_selb);
> + } else if (get_bit_number(tx_selb) == 0) {
> + selb = get_selb_failure_point(start_selb, raw_tx_selb,
> + ggc_get_tuning_cnt_from_buffer(host));
> + tx_selb_inject_policy(host, selb);
> + all_selb_failed_tb_update(host, cur_sela, all_selb);
> + tx_selb_failed_tb_update(host, cur_sela, selb);
> + tx_selb_failed_history_update(host, selb);
> + retuning_flg = true;
> + } else {
> + tx_selb_inject_policy(host, tx_selb);
> + all_selb_failed_tb_update(host, cur_sela, all_selb);
> + tx_selb_failed_tb_update(host, cur_sela, tx_selb);
> + tx_selb_failed_history_update(host, tx_selb);
> + retuning_flg = true;
> + }
> +
> + _ggc_update_cur_setting_for_sw_selb_tuning(host,
> + ggc->ggc_cmd_tx_selb_failed_range);
> + ggc_hw_inject_may_recursive(host, ggc->ggc_cmd_tx_selb_failed_range,
> + ggc->ggc_cmd_tx_selb_failed_range, true);
> + } else {
> + all_selb_failed_tb_update(host, cur_sela, all_selb);
> + tx_selb_failed_tb_update(host, cur_sela, tx_selb);
> + tx_selb_failed_history_update(host, tx_selb);
> + }
> +
> + if (retuning_flg == true) {
> + pr_debug("BHT MSG: %s dll:%xh need retuning\n",
> + __func__, cur_sela);
> + psela_tuning_result[cur_sela] = RETUNING_CASE;
> + } else {
> + pr_debug("BHT MSG: %s dll:%xh pass\n",
> + __func__, cur_sela);
> + psela_tuning_result[cur_sela] = OUTPUT_PASS_TYPE;
> + }
> + } else {
> + psela_tuning_result[cur_sela] = READ_STATUS_FAIL_TYPE;
> + all_selb_failed_tb_update(host, cur_sela, 0);
> + pr_debug("BHT MSG:== %s dll:%xh read status failed ==\n",
> + __func__, cur_sela);
> + }
> + }
> +exit:
> + return ret;
> +}
> +static int sdhci_bht_sdr104_execute_tuning(struct sdhci_host *host, u32 opcode)
> +{
> + struct mmc_host *mmc = host->mmc;
> +
> + return sdhci_msm_execute_tuning(mmc, opcode);
> +}
> +
> +static int sd_tuning_sw(struct sdhci_host *host)
> +{
> + int ret = 0;
> +
> + if (is_bus_mode_sdr104(host))
> + ret = sdhci_bht_sdr104_execute_tuning(host, 0x13);
> + else
> + ret = sdhci_bht_sdr50_execute_tuning(host, 0x13);
> +
> + return ret;
> +}
> +
> +static bool sd_gg_tuning_status(struct sdhci_host *host,
> + u32 *tx_selb, u32 *all_selb, u64 *raw_tx_selb,
> + bool *status_ret, bool *first_cmd19_status)
> +{
> + bool ret = true;
> + int err = sd_tuning_sw(host);
> +
> + ret = err == 0 ? true : false;
> + if (err == -ETIMEDOUT) {
> + ret = false;
> + if (first_cmd19_status)
> + *first_cmd19_status = false;
> + goto exit;
> + }
> +
> + if (status_ret) {
> + *status_ret =
> + gg_tuning_result(host, tx_selb, all_selb,
> + raw_tx_selb);
> + } else {
> + gg_tuning_result(host, 0, 0, 0);
> + }
> +
> +exit:
> + return ret;
> +}
> +
> +static bool ggc_sd_tuning(struct sdhci_host *host,
> + bool *first_cmd19_status)
> +{
> + bool ret = true;
> + int err = sd_tuning_sw(host);
> +
> + ret = err == 0 ? true : false;
> + if (err == -ETIMEDOUT) {
> + ret = false;
> + if (first_cmd19_status)
> + *first_cmd19_status = false;
> + goto exit;
> + }
> +
> +exit:
> + return ret;
> +}
> +
> +static bool _ggc_output_tuning(struct sdhci_host *host, u8 *selb_pass_win)
> +{
> + int cur_sela = 0, dll_sela_cnt = 0;
> + int dll_sela_basis = 0;
> + bool ret = false;
> + u8 win_tb[12] = { 0 };
> + u8 win_mid = 0;
> + u8 win_max = 0;
> + u32 tx_tmp = 0;
> + int target_sela = 0;
> + int target_selb = 0;
> + u32 all_sela, tx_selb, all_selb;
> + u64 raw_tx_selb;
> + bool status_ret = false;
> + int cur_selb = 0;
> + int tuning_error_type[16] = { 0 };
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + enum tuning_state *psela_tuning_result = ggc->ggc_sela_tuning_result;
> + int i = 0;
> + u32 idx_r, idx_c;
> + u32 min_pos = 0;
> + u32 all_selb_ar[TUNING_PHASE_SIZE] = { 0 };
> + u32 pass_cnt[TUNING_PHASE_SIZE] = { 0 };
> + u32 cfg = 0;
> + int rescan_selb_cnt = 0;
> + int returning_selb_cnt = 0;
> + bool first_cmd19_sta = true;
> + int next = 0;
> + bool card_status = true;
> + int selb = BIT_PASS_MASK;
> + u8 all_str[TUNING_PHASE_SIZE + 1], tx_str[TUNING_PHASE_SIZE + 1];
> +
> + ggc->driver_strength_reinit_flg = 0;
> + ggc->dll_unlock_reinit_flg = 0;
> + dll_sela_basis = get_config_sela_setting(host);
> + cur_selb = get_config_selb_setting(host);
> +
> + if (ggc->tuning_cmd7_timeout_reinit_flg) {
> + ggc->tuning_cmd7_timeout_reinit_flg = 0;
> + dll_sela_basis = ggc->ggc_cur_sela;
> + cur_selb = ggc->ggc_sw_selb_tuning_first_selb;
> + pr_debug
> + ("BHT MSG:Tuning start sela: 0x%x, selb: 0x%x where CMD7 timeout\n",
> + dll_sela_basis, cur_selb);
> + }
> +
> + for (dll_sela_cnt = 0; dll_sela_cnt < TUNING_PHASE_SIZE; dll_sela_cnt++) {
> + cur_sela =
> + (dll_sela_cnt + dll_sela_basis) % TUNING_PHASE_SIZE;
> + ggc->ggc_cur_sela = cur_sela;
> + pr_debug("BHT MSG: %s select sela dll: %x, selb dll: %x\n",
> + __func__, cur_sela, cur_selb);
> + if (psela_tuning_result[cur_sela] != NO_TUNING) {
> + pr_debug("BHT MSG:sela tuning=%d already tuning,so skip it\n", cur_sela);
> + continue;
> + }
> +rescan_selb:
> + host_cmddat_line_reset(host);
> +
> + if (dll_sela_cnt == 0) {
> + if (!selx_failure_point_exist
> + (ggc->ggc_cmd_tx_selb_failed_range)) {
> + rescan_selb_cnt = 3;
> + pr_debug("BHT MSG:no need rescan case\n");
> + }
> + status_ret = false;
> + ret = ggc_sd_tuning(host, &first_cmd19_sta);
> +
> + if (first_cmd19_sta == false) {
> + _check_bus_mode(host);
> + ggc->cur_bus_mode->dll_voltage_unlock_cnt
> + [ggc->cur_dll_voltage_idx]++;
> + ggc->dll_voltage_scan_map[ggc->cur_dll_voltage_idx] = 1;
> + if (get_next_dll_voltage(ggc->cur_dll_voltage_idx, &next,
> + ggc->cur_bus_mode->dll_voltage_unlock_cnt,
> + ggc->dll_voltage_scan_map) == true)
> + ggc->cur_dll_voltage_idx = next;
> + else
> + ggc->cur_dll_voltage_idx =
> + (ggc->cur_dll_voltage_idx + 1) % 4;
> +
> + pr_err("BHT ERR:first cmd19 timeout\n");
> + ggc->dll_unlock_reinit_flg = 1;
> + _ggc_reset_tuning_result_for_dll(host);
> + ret = false;
> + goto exit;
> + }
> + } else if ((is_bus_mode_sdr104(host) == false)
> + && ggc->sdr50_notuning_sela_inject_flag == 1
> + && !GET_IDX_VALUE(ggc->sdr50_notuning_sela_rx_inject,
> + cur_sela)) {
> + pr_debug("BHT MSG:skip %d\n", cur_sela);
> + tuning_error_type[cur_sela] = READ_STATUS_FAIL_TYPE;
> + goto cur_sela_failed;
> + } else {
> + ret = ggc_set_output_tuning_phase_ext(host, &card_status,
> + cur_sela, update_selb(host, cur_selb));
> + if (ret == false || card_status == false) {
> + pr_err
> + ("BHT ERR: output_tuning fail at phase %d,ret=%d,card_status=%d\n",
> + cur_sela, ret, card_status);
> + if (card_status == false) {
> + selb &= ~GENERATE_IDX_VALUE(cur_selb);
> + pr_err("BHT ERR:inject selb %d for update sela/selb fail\n",
> + selb);
> + tx_selb_inject_policy(host, selb);
> + _ggc_update_cur_setting_for_sw_selb_tuning(host,
> + ggc->ggc_cmd_tx_selb_failed_range);
> + ggc_hw_inject_may_recursive(host,
> + ggc->ggc_cmd_tx_selb_failed_range,
> + ggc->ggc_cmd_tx_selb_failed_range, true);
> +
> + if (((11 - get_bit_number(
> + ggc->ggc_cmd_tx_selb_failed_range)) >= 5)) {
> + u8 current_ds = (u8)(ggc->gg_reg_cur[15] >> 28);
> +
> + pr_err("BHT ERR:pass windows too small\n");
> +
> + ggc->driver_strength_reinit_flg =
> + current_ds < 7 ? current_ds + 1 : 7;
> +
> + ggc->gg_reg_cur[15] &= 0x0F0FFFFF;
> + ggc->gg_reg_cur[15] |=
> + (ggc->driver_strength_reinit_flg << 28)
> + | (ggc->driver_strength_reinit_flg << 20);
> + ret = false;
> +
> + goto exit;
> + }
> + cur_selb = _ggc_get_suitable_selb_for_next_tuning(host);
> + }
> + psela_tuning_result[cur_sela] = RETUNING_CASE;
> + goto retuning_case;
> + }
> + ret = ggc_sd_tuning(host, NULL);
> + }
> +
> + if (ret == false) {
> + pr_err("BHT ERR:Error when output_tuning, fail at phase %d\n",
> + cur_sela);
> + psela_tuning_result[cur_sela] = TUNING_FAIL_TYPE;
> + all_selb_failed_tb_update(host, cur_sela, 0);
> + continue;
> + }
> +
> + ret = _ggc_calc_cur_sela_tuning_result(host, cur_sela, cur_selb);
> +
> + if ((11 - get_bit_number(ggc->ggc_cmd_tx_selb_failed_range)) >= 5) {
> + u8 current_ds = (u8)(ggc->gg_reg_cur[15] >> 28);
> +
> + pr_err("BHT ERR:pass windows too small after result calculate, reinit\n");
> + if (current_ds < 7)
> + ggc->driver_strength_reinit_flg = current_ds + 1;
> + else
> + ggc->driver_strength_reinit_flg = 7;
> +
> + ggc->gg_reg_cur[15] &= 0x0F0FFFFF;
> + ggc->gg_reg_cur[15] |=
> + (ggc->driver_strength_reinit_flg << 28)
> + | (ggc->driver_strength_reinit_flg << 20);
> + ret = false;
> + pr_err("BHT ERR:will change driver strength from %d to %d\n",
> + current_ds,
> + ggc->driver_strength_reinit_flg);
> + goto exit;
> + }
> +
> + if (ret == false) {
> + pr_err("BHT ERR:cmd7 timeout fail,reinit\n");
> + ggc->tuning_cmd7_timeout_reinit_flg = 1;
> +
> + _ggc_update_cur_setting_for_sw_selb_tuning(host,
> + ggc->ggc_cmd_tx_selb_failed_range);
> + ggc_hw_inject_may_recursive(host, ggc->ggc_cmd_tx_selb_failed_range,
> + ggc->ggc_cmd_tx_selb_failed_range, false);
> + if ((11 - get_bit_number(ggc->ggc_cmd_tx_selb_failed_range))
> + >= 5) {
> + u8 current_ds = (u8)(ggc->gg_reg_cur[15] >> 28);
> +
> + pr_err("BHT ERR:pass windows too small, driver strength reinit\n");
> +
> + ggc->tuning_cmd7_timeout_reinit_flg = 0;
> +
> + ggc->driver_strength_reinit_flg =
> + current_ds < 7 ? current_ds + 1 : 7;
> +
> + ggc->gg_reg_cur[15] &= 0x0F0FFFFF;
> + ggc->gg_reg_cur[15] |=
> + (ggc->driver_strength_reinit_flg << 28)
> + | (ggc->driver_strength_reinit_flg << 20);
> + ret = false;
> + pr_err("BHT ERR:will change driver strength from %d to %d\n",
> + current_ds,
> + ggc->driver_strength_reinit_flg);
> + goto exit;
> + }
> + goto exit;
> + }
> +
> + cur_selb = _ggc_get_suitable_selb_for_next_tuning(host);
> +
> + pr_debug("BHT MSG: output sela:%xh pass\n", cur_sela);
> + rescan_selb_cnt++;
> + if ((rescan_selb_cnt < 3) &&
> + (selx_failure_point_exist(ggc->ggc_cmd_tx_selb_failed_range))) {
> + pr_debug("BHT MSG:rescan cnt %d, ggc_cmd_tx_selb_failed_range=0x%x\n",
> + rescan_selb_cnt,
> + ggc->ggc_cmd_tx_selb_failed_range);
> + goto rescan_selb;
> + }
> +
> +retuning_case:
> + if (psela_tuning_result[cur_sela] == RETUNING_CASE) {
> + returning_selb_cnt++;
> + if (returning_selb_cnt < 3) {
> + rescan_selb_cnt = 0;
> + pr_debug("BHT MSG:retuning %d\n", rescan_selb_cnt);
> + goto rescan_selb;
> + } else {
> + psela_tuning_result[cur_sela] = SET_PHASE_FAIL_TYPE;
> + all_selb_failed_tb_update(host, cur_sela, 0);
> + continue;
> + }
> + }
> +
> + goto next_dll_sela;
> +
> +cur_sela_failed:
> + pr_debug("BHT MSG:read status failedB\n");
> + all_selb = 0;
> + all_selb_failed_tb_update(host, cur_sela, all_selb);
> + pr_debug("BHT MSG: output sela:%xh failed ===\n", cur_sela);
> +next_dll_sela:
> + if ((is_bus_mode_sdr104(host) == false)
> + && ggc->sdr50_notuning_crc_error_flag) {
> + u32 fp = 0;
> +
> + fp = GENERATE_IDX_VALUE(cur_sela);
> + fp |= GENERATE_IDX_VALUE((cur_sela + 1) % TUNING_PHASE_SIZE);
> + fp |= GENERATE_IDX_VALUE((cur_sela + 10) % TUNING_PHASE_SIZE);
> + ggc->sdr50_notuning_sela_rx_inject &= ~fp;
> + ggc->sdr50_notuning_sela_inject_flag = 1;
> + pr_debug("BHT MSG:sdr50_notuning_sela_rx_inject:%x\n",
> + ggc->sdr50_notuning_sela_rx_inject);
> + ret = false;
> + goto exit;
> + };
> + }
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + phase_str(all_str, all_selb_failed_tb_get(host, i));
> + phase_str(tx_str, tx_selb_failed_tb_get(host, i));
> + pr_debug
> + ("BHT MSG:DLL sela[%x] all selb: %s tx selb: %s [%xh,%xh] %s\n",
> + i, all_str, tx_str,
> + all_selb_failed_tb_get(host, i),
> + tx_selb_failed_tb_get(host, i),
> + op_dbg_str[tuning_error_type[i]]);
> +
> + }
> +
> + /* remove margin passed all selb phase */
> + for (i = 0; i < TUNING_PHASE_SIZE; i++)
> + all_selb_ar[i] = all_selb_failed_tb_get(host, i);
> +
> + /* calculate cumulation of diagonal bits */
> + for (idx_c = 0; idx_c < TUNING_PHASE_SIZE; idx_c++) {
> + for (idx_r = 0; idx_r < TUNING_PHASE_SIZE;
> + idx_r++) {
> + pass_cnt[idx_c] += ((all_selb_ar[idx_r] >>
> + ((idx_r + idx_c) % TUNING_PHASE_SIZE)) & 0x01);
> + }
> + if (idx_c == 0)
> + min_pos = 0;
> + else if (pass_cnt[idx_c] < pass_cnt[min_pos])
> + min_pos = idx_c;
> + }
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + all_selb_ar[i] &= ~(1 << (min_pos + i) % TUNING_PHASE_SIZE);
> + all_selb_failed_tb_update(host, i, all_selb_ar[i]);
> + }
> +
> + tx_selb = tx_selb_failed_history_get(host);
> +
> + pr_debug("inject sw selb & merge tx_selb failed point to all_selb\n");
> + for (i = 0; i < TUNING_PHASE_SIZE; i++)
> + all_selb_failed_tb_update(host, i, tx_selb);
> +
> + pr_debug("BHT MSG:inject sw sela failed point to all_selb\n");
> + if (is_bus_mode_sdr104(host))
> + cfg = 0x7ff;
> + else
> + cfg = 0x7ff;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + if (GET_IDX_VALUE(cfg, i) == 0)
> + all_selb_failed_tb_update(host, i, 0);
> + }
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + phase_str(all_str, all_selb_failed_tb_get(host, i));
> + phase_str(tx_str, tx_selb_failed_tb_get(host, i));
> + pr_debug("BHT MSG:DLL sela[%x] all selb: %s tx selb: %s [%xh,%xh] %s\n",
> + i, all_str, tx_str,
> + all_selb_failed_tb_get(host, i),
> + tx_selb_failed_tb_get(host, i),
> + op_dbg_str[tuning_error_type[i]]);
> + }
> +
> + tx_selb = tx_selb_failed_history_get(host);
> + tx_selb &= 0x7ff;
> + tx_tmp = tx_selb;
> +
> + pr_debug("BHT MSG:---selb merge---\n");
> + if ((tx_selb&0x7ff) == 0x7ff) {
> + if (is_bus_mode_sdr104(host)) {
> + u32 cfg = SDR104_MANUAL_INJECT;
> +
> + tx_selb &= cfg;
> + pr_debug("tx selb:%xh SDR104 inject:%xh merge tx_selb:%xh\n",
> + tx_tmp, cfg, tx_selb);
> + } else {
> + u32 cfg = SDR50_MANUAL_INJECT;
> +
> + tx_selb &= cfg;
> + pr_debug("tx selb:%xh SDR50 inject:%xh merge tx_selb:%xh\n",
> + tx_tmp, cfg, tx_selb);
> + }
> + }
> +
> + if (tx_selb == 0) {
> + pr_err("all failed, force fixed phase sela selb to default\n");
> + target_selb =
> + get_config_selb_setting(host);
> + target_sela =
> + get_config_sela_setting(host);
> + goto final;
> + }
> + phase_str(win_tb, tx_selb);
> + pr_debug("BHT MSG: tx selb[%xh] 11 bit: %s\n",
> + tx_selb, win_tb);
> + bits_generate_array(win_tb, tx_selb);
> + chk_phase_window(win_tb, &win_mid, &win_max);
> + target_selb = win_mid;
> +
> + all_sela = 0;
> +
> + for (i = 0; i < TUNING_PHASE_SIZE; i++) {
> + u32 all_selb = all_selb_failed_tb_get(host, i);
> +
> + phase_str(win_tb, all_selb);
> + pr_debug("BHT MSG: all_selb[%xh] 11 bit: %s\n",
> + all_selb, win_tb);
> + bits_generate_array(win_tb, all_selb);
> + chk_phase_window(win_tb, &win_mid,
> + &win_max);
> + *selb_pass_win = win_max;
> + if (all_selb & (1 << target_selb))
> + all_sela |= 1 << i;
> + }
> +
> + phase_str(win_tb, all_sela);
> + pr_debug("BHT MSG: all_sela[%xh] 11 bit: %s\n",
> + all_sela, win_tb);
> + bits_generate_array(win_tb, all_sela);
> + chk_phase_window(win_tb, &win_mid, &win_max);
> + target_sela = win_mid;
> +
> +final:
> +
> + gg_fix_output_tuning_phase(host, target_sela,
> + target_selb);
> +
> + ret = sd_gg_tuning_status(host, &tx_selb,
> + &all_selb, &raw_tx_selb, &status_ret, NULL);
> + if (ret == false) {
> + pr_err("Error when output_tuning, sd_tuning fail\n");
> + ret = false;
> + goto exit;
> + }
> +
> + /* use final pass windows */
> + phase_str(win_tb, all_selb);
> + pr_debug("BHT MSG: all_selb[%xh] 11 bit: %s\n",
> + all_selb, win_tb);
> + bits_generate_array(win_tb, all_selb);
> + chk_phase_window(win_tb, &win_mid, &win_max);
> + *selb_pass_win = win_max;
> +
> + ggc->selx_tuning_done_flag = 1;
> +
> +exit:
> + pr_debug("BHT MSG:exit:%s %d\n", __func__, ret);
> + return ret;
> +}
> +
> +static int sdhci_bht_execute_tuning(struct mmc_host *mmc, u32 opcode)
> +{
> + struct sdhci_host *host = mmc_priv(mmc);
> + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
> + struct sdhci_msm_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
> + struct sdhci_bht_host *ggc = sdhci_msm_priv(vendor_host);
> + u8 tw = 0;
> + int ret = 0;
> +
> + pr_debug("BHT MSG:enter bht tuning\n");
> + if (host->clock < CORE_FREQ_100MHZ) {
> + pr_debug("BHT MSG:%d less 100Mhz,no tuning\n", host->clock);
> + return 0;
> + }
> +
> + if (ggc->tuning_in_progress) {
> + pr_debug("BHT MSG:tuning_in_progress\n");
> + return 0;
> + }
> + ggc->tuning_in_progress = true;
> +
> + if (ggc->selx_tuning_done_flag) {
> + pr_debug("BHT MSG:GGC tuning is done, just do vendor host tuning");
> + if (is_bus_mode_sdr104(host))
> + ret = sdhci_bht_sdr104_execute_tuning(host, 0x13);
> + else
> + ret = sdhci_bht_sdr50_execute_tuning(host, 0x13);
> + } else {
> + ret = !_ggc_output_tuning(host, &tw);
> + }
> + ggc->tuning_in_progress = false;
> + return ret;
> +}
> --
> 2.32.0
>

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