[Blackfin removal] [PATCH 06/28] mmc: Remove Blackfin SD host support

From: Aaron Wu
Date: Fri Mar 16 2018 - 03:23:31 EST

Signed-off-by: Aaron Wu <aaron.wu@xxxxxxxxxx>

Remove Blackfin SD host support
---
drivers/mmc/host/Kconfig | 19 --
drivers/mmc/host/Makefile | 1 -
drivers/mmc/host/bfin_sdh.c | 679 --------------------------------------------
3 files changed, 699 deletions(-)
delete mode 100644 drivers/mmc/host/bfin_sdh.c

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 620c2d9..b4fd5d4 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -646,25 +646,6 @@ config MMC_VIA_SDMMC

If unsure, say N.

-config SDH_BFIN
- tristate "Blackfin Secure Digital Host support"
- depends on (BF54x && !BF544) || (BF51x && !BF512)
- help
- If you say yes here you will get support for the Blackfin on-chip
- Secure Digital Host interface. This includes support for MMC and
- SD cards.
-
- To compile this driver as a module, choose M here: the
- module will be called bfin_sdh.
-
- If unsure, say N.
-
-config SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND
- bool "Blackfin EZkit Missing SDH_CMD Pull Up Resistor Workaround"
- depends on SDH_BFIN
- help
- If you say yes here SD-Cards may work on the EZkit.
-
config MMC_CAVIUM_OCTEON
tristate "Cavium OCTEON SD/MMC Card Interface support"
depends on CAVIUM_OCTEON_SOC
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 84cd138..f563cc0 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -43,7 +43,6 @@ obj-$(CONFIG_MMC_SDHI_SYS_DMAC) += renesas_sdhi_sys_dmac.o
obj-$(CONFIG_MMC_SDHI_INTERNAL_DMAC) += renesas_sdhi_internal_dmac.o
obj-$(CONFIG_MMC_CB710) += cb710-mmc.o
obj-$(CONFIG_MMC_VIA_SDMMC) += via-sdmmc.o
-obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o
octeon-mmc-objs := cavium.o cavium-octeon.o
obj-$(CONFIG_MMC_CAVIUM_OCTEON) += octeon-mmc.o
thunderx-mmc-objs := cavium.o cavium-thunderx.o
diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
deleted file mode 100644
index 526231e..0000000
--- a/drivers/mmc/host/bfin_sdh.c
+++ /dev/null
@@ -1,679 +0,0 @@
-/*
- * bfin_sdh.c - Analog Devices Blackfin SDH Controller
- *
- * Copyright (C) 2007-2009 Analog Device Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#define DRIVER_NAME "bfin-sdh"
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/platform_device.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-#include <linux/mmc/host.h>
-#include <linux/proc_fs.h>
-#include <linux/gfp.h>
-
-#include <asm/cacheflush.h>
-#include <asm/dma.h>
-#include <asm/portmux.h>
-#include <asm/bfin_sdh.h>
-
-#if defined(CONFIG_BF51x) || defined(__ADSPBF60x__)
-#define bfin_read_SDH_CLK_CTL bfin_read_RSI_CLK_CTL
-#define bfin_write_SDH_CLK_CTL bfin_write_RSI_CLK_CTL
-#define bfin_write_SDH_ARGUMENT bfin_write_RSI_ARGUMENT
-#define bfin_write_SDH_COMMAND bfin_write_RSI_COMMAND
-#define bfin_write_SDH_DATA_TIMER bfin_write_RSI_DATA_TIMER
-#define bfin_read_SDH_RESPONSE0 bfin_read_RSI_RESPONSE0
-#define bfin_read_SDH_RESPONSE1 bfin_read_RSI_RESPONSE1
-#define bfin_read_SDH_RESPONSE2 bfin_read_RSI_RESPONSE2
-#define bfin_read_SDH_RESPONSE3 bfin_read_RSI_RESPONSE3
-#define bfin_write_SDH_DATA_LGTH bfin_write_RSI_DATA_LGTH
-#define bfin_read_SDH_DATA_CTL bfin_read_RSI_DATA_CTL
-#define bfin_write_SDH_DATA_CTL bfin_write_RSI_DATA_CTL
-#define bfin_read_SDH_DATA_CNT bfin_read_RSI_DATA_CNT
-#define bfin_write_SDH_STATUS_CLR bfin_write_RSI_STATUS_CLR
-#define bfin_read_SDH_E_STATUS bfin_read_RSI_E_STATUS
-#define bfin_write_SDH_E_STATUS bfin_write_RSI_E_STATUS
-#define bfin_read_SDH_STATUS bfin_read_RSI_STATUS
-#define bfin_write_SDH_MASK0 bfin_write_RSI_MASK0
-#define bfin_write_SDH_E_MASK bfin_write_RSI_E_MASK
-#define bfin_read_SDH_CFG bfin_read_RSI_CFG
-#define bfin_write_SDH_CFG bfin_write_RSI_CFG
-# if defined(__ADSPBF60x__)
-# define bfin_read_SDH_BLK_SIZE bfin_read_RSI_BLKSZ
-# define bfin_write_SDH_BLK_SIZE bfin_write_RSI_BLKSZ
-# else
-# define bfin_read_SDH_PWR_CTL bfin_read_RSI_PWR_CTL
-# define bfin_write_SDH_PWR_CTL bfin_write_RSI_PWR_CTL
-# endif
-#endif
-
-struct sdh_host {
- struct mmc_host *mmc;
- spinlock_t lock;
- struct resource *res;
- void __iomem *base;
- int irq;
- int stat_irq;
- int dma_ch;
- int dma_dir;
- struct dma_desc_array *sg_cpu;
- dma_addr_t sg_dma;
- int dma_len;
-
- unsigned long sclk;
- unsigned int imask;
- unsigned int power_mode;
- unsigned int clk_div;
-
- struct mmc_request *mrq;
- struct mmc_command *cmd;
- struct mmc_data *data;
-};
-
-static struct bfin_sd_host *get_sdh_data(struct platform_device *pdev)
-{
- return pdev->dev.platform_data;
-}
-
-static void sdh_stop_clock(struct sdh_host *host)
-{
- bfin_write_SDH_CLK_CTL(bfin_read_SDH_CLK_CTL() & ~CLK_E);
- SSYNC();
-}
-
-static void sdh_enable_stat_irq(struct sdh_host *host, unsigned int mask)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&host->lock, flags);
- host->imask |= mask;
- bfin_write_SDH_MASK0(mask);
- SSYNC();
- spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static void sdh_disable_stat_irq(struct sdh_host *host, unsigned int mask)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&host->lock, flags);
- host->imask &= ~mask;
- bfin_write_SDH_MASK0(host->imask);
- SSYNC();
- spin_unlock_irqrestore(&host->lock, flags);
-}
-
-static int sdh_setup_data(struct sdh_host *host, struct mmc_data *data)
-{
- unsigned int length;
- unsigned int data_ctl;
- unsigned int dma_cfg;
- unsigned int cycle_ns, timeout;
-
- dev_dbg(mmc_dev(host->mmc), "%s enter flags: 0x%x\n", __func__, data->flags);
- host->data = data;
- data_ctl = 0;
- dma_cfg = 0;
-
- length = data->blksz * data->blocks;
- bfin_write_SDH_DATA_LGTH(length);
-
- if (data->flags & MMC_DATA_READ)
- data_ctl |= DTX_DIR;
- /* Only supports power-of-2 block size */
- if (data->blksz & (data->blksz - 1))
- return -EINVAL;
-#ifndef RSI_BLKSZ
- data_ctl |= ((ffs(data->blksz) - 1) << 4);
-#else
- bfin_write_SDH_BLK_SIZE(data->blksz);
-#endif
-
- bfin_write_SDH_DATA_CTL(data_ctl);
- /* the time of a host clock period in ns */
- cycle_ns = 1000000000 / (host->sclk / (2 * (host->clk_div + 1)));
- timeout = data->timeout_ns / cycle_ns;
- timeout += data->timeout_clks;
- bfin_write_SDH_DATA_TIMER(timeout);
- SSYNC();
-
- if (data->flags & MMC_DATA_READ) {
- host->dma_dir = DMA_FROM_DEVICE;
- dma_cfg |= WNR;
- } else
- host->dma_dir = DMA_TO_DEVICE;
-
- sdh_enable_stat_irq(host, (DAT_CRC_FAIL | DAT_TIME_OUT | DAT_END));
- host->dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma_dir);
-#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x)
- dma_cfg |= DMAFLOW_ARRAY | RESTART | WDSIZE_32 | DMAEN;
-# ifdef RSI_BLKSZ
- dma_cfg |= PSIZE_32 | NDSIZE_3;
-# else
- dma_cfg |= NDSIZE_5;
-# endif
- {
- struct scatterlist *sg;
- int i;
- for_each_sg(data->sg, sg, host->dma_len, i) {
- host->sg_cpu[i].start_addr = sg_dma_address(sg);
- host->sg_cpu[i].cfg = dma_cfg;
- host->sg_cpu[i].x_count = sg_dma_len(sg) / 4;
- host->sg_cpu[i].x_modify = 4;
- dev_dbg(mmc_dev(host->mmc), "%d: start_addr:0x%lx, "
- "cfg:0x%lx, x_count:0x%lx, x_modify:0x%lx\n",
- i, host->sg_cpu[i].start_addr,
- host->sg_cpu[i].cfg, host->sg_cpu[i].x_count,
- host->sg_cpu[i].x_modify);
- }
- }
- flush_dcache_range((unsigned int)host->sg_cpu,
- (unsigned int)host->sg_cpu +
- host->dma_len * sizeof(struct dma_desc_array));
- /* Set the last descriptor to stop mode */
- host->sg_cpu[host->dma_len - 1].cfg &= ~(DMAFLOW | NDSIZE);
- host->sg_cpu[host->dma_len - 1].cfg |= DI_EN;
-
- set_dma_curr_desc_addr(host->dma_ch, (unsigned long *)host->sg_dma);
- set_dma_x_count(host->dma_ch, 0);
- set_dma_x_modify(host->dma_ch, 0);
- SSYNC();
- set_dma_config(host->dma_ch, dma_cfg);
-#elif defined(CONFIG_BF51x)
- /* RSI DMA doesn't work in array mode */
- dma_cfg |= WDSIZE_32 | DMAEN;
- set_dma_start_addr(host->dma_ch, sg_dma_address(&data->sg[0]));
- set_dma_x_count(host->dma_ch, length / 4);
- set_dma_x_modify(host->dma_ch, 4);
- SSYNC();
- set_dma_config(host->dma_ch, dma_cfg);
-#endif
- bfin_write_SDH_DATA_CTL(bfin_read_SDH_DATA_CTL() | DTX_DMA_E | DTX_E);
-
- SSYNC();
-
- dev_dbg(mmc_dev(host->mmc), "%s exit\n", __func__);
- return 0;
-}
-
-static void sdh_start_cmd(struct sdh_host *host, struct mmc_command *cmd)
-{
- unsigned int sdh_cmd;
- unsigned int stat_mask;
-
- dev_dbg(mmc_dev(host->mmc), "%s enter cmd: 0x%p\n", __func__, cmd);
- WARN_ON(host->cmd != NULL);
- host->cmd = cmd;
-
- sdh_cmd = 0;
- stat_mask = 0;
-
- sdh_cmd |= cmd->opcode;
-
- if (cmd->flags & MMC_RSP_PRESENT) {
- sdh_cmd |= CMD_RSP;
- stat_mask |= CMD_RESP_END;
- } else {
- stat_mask |= CMD_SENT;
- }
-
- if (cmd->flags & MMC_RSP_136)
- sdh_cmd |= CMD_L_RSP;
-
- stat_mask |= CMD_CRC_FAIL | CMD_TIME_OUT;
-
- sdh_enable_stat_irq(host, stat_mask);
-
- bfin_write_SDH_ARGUMENT(cmd->arg);
- bfin_write_SDH_COMMAND(sdh_cmd | CMD_E);
- bfin_write_SDH_CLK_CTL(bfin_read_SDH_CLK_CTL() | CLK_E);
- SSYNC();
-}
-
-static void sdh_finish_request(struct sdh_host *host, struct mmc_request *mrq)
-{
- dev_dbg(mmc_dev(host->mmc), "%s enter\n", __func__);
- host->mrq = NULL;
- host->cmd = NULL;
- host->data = NULL;
- mmc_request_done(host->mmc, mrq);
-}
-
-static int sdh_cmd_done(struct sdh_host *host, unsigned int stat)
-{
- struct mmc_command *cmd = host->cmd;
- int ret = 0;
-
- dev_dbg(mmc_dev(host->mmc), "%s enter cmd: %p\n", __func__, cmd);
- if (!cmd)
- return 0;
-
- host->cmd = NULL;
-
- if (cmd->flags & MMC_RSP_PRESENT) {
- cmd->resp[0] = bfin_read_SDH_RESPONSE0();
- if (cmd->flags & MMC_RSP_136) {
- cmd->resp[1] = bfin_read_SDH_RESPONSE1();
- cmd->resp[2] = bfin_read_SDH_RESPONSE2();
- cmd->resp[3] = bfin_read_SDH_RESPONSE3();
- }
- }
- if (stat & CMD_TIME_OUT)
- cmd->error = -ETIMEDOUT;
- else if (stat & CMD_CRC_FAIL && cmd->flags & MMC_RSP_CRC)
- cmd->error = -EILSEQ;
-
- sdh_disable_stat_irq(host, (CMD_SENT | CMD_RESP_END | CMD_TIME_OUT | CMD_CRC_FAIL));
-
- if (host->data && !cmd->error) {
- if (host->data->flags & MMC_DATA_WRITE) {
- ret = sdh_setup_data(host, host->data);
- if (ret)
- return 0;
- }
-
- sdh_enable_stat_irq(host, DAT_END | RX_OVERRUN | TX_UNDERRUN | DAT_TIME_OUT);
- } else
- sdh_finish_request(host, host->mrq);
-
- return 1;
-}
-
-static int sdh_data_done(struct sdh_host *host, unsigned int stat)
-{
- struct mmc_data *data = host->data;
-
- dev_dbg(mmc_dev(host->mmc), "%s enter stat: 0x%x\n", __func__, stat);
- if (!data)
- return 0;
-
- disable_dma(host->dma_ch);
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
- host->dma_dir);
-
- if (stat & DAT_TIME_OUT)
- data->error = -ETIMEDOUT;
- else if (stat & DAT_CRC_FAIL)
- data->error = -EILSEQ;
- else if (stat & (RX_OVERRUN | TX_UNDERRUN))
- data->error = -EIO;
-
- if (!data->error)
- data->bytes_xfered = data->blocks * data->blksz;
- else
- data->bytes_xfered = 0;
-
- bfin_write_SDH_STATUS_CLR(DAT_END_STAT | DAT_TIMEOUT_STAT | \
- DAT_CRC_FAIL_STAT | DAT_BLK_END_STAT | RX_OVERRUN | TX_UNDERRUN);
- bfin_write_SDH_DATA_CTL(0);
- SSYNC();
-
- host->data = NULL;
- if (host->mrq->stop) {
- sdh_stop_clock(host);
- sdh_start_cmd(host, host->mrq->stop);
- } else {
- sdh_finish_request(host, host->mrq);
- }
-
- return 1;
-}
-
-static void sdh_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
- struct sdh_host *host = mmc_priv(mmc);
- int ret = 0;
-
- dev_dbg(mmc_dev(host->mmc), "%s enter, mrp:%p, cmd:%p\n", __func__, mrq, mrq->cmd);
- WARN_ON(host->mrq != NULL);
-
- spin_lock(&host->lock);
- host->mrq = mrq;
- host->data = mrq->data;
-
- if (mrq->data && mrq->data->flags & MMC_DATA_READ) {
- ret = sdh_setup_data(host, mrq->data);
- if (ret)
- goto data_err;
- }
-
- sdh_start_cmd(host, mrq->cmd);
-data_err:
- spin_unlock(&host->lock);
-}
-
-static void sdh_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
- struct sdh_host *host;
- u16 clk_ctl = 0;
-#ifndef RSI_BLKSZ
- u16 pwr_ctl = 0;
-#endif
- u16 cfg;
- host = mmc_priv(mmc);
-
- spin_lock(&host->lock);
-
- cfg = bfin_read_SDH_CFG();
- cfg |= MWE;
- switch (ios->bus_width) {
- case MMC_BUS_WIDTH_4:
-#ifndef RSI_BLKSZ
- cfg &= ~PD_SDDAT3;
-#endif
- cfg |= PUP_SDDAT3;
- /* Enable 4 bit SDIO */
- cfg |= SD4E;
- clk_ctl |= WIDE_BUS_4;
- break;
- case MMC_BUS_WIDTH_8:
-#ifndef RSI_BLKSZ
- cfg &= ~PD_SDDAT3;
-#endif
- cfg |= PUP_SDDAT3;
- /* Disable 4 bit SDIO */
- cfg &= ~SD4E;
- clk_ctl |= BYTE_BUS_8;
- break;
- default:
- cfg &= ~PUP_SDDAT3;
- /* Disable 4 bit SDIO */
- cfg &= ~SD4E;
- }
- bfin_write_SDH_CFG(cfg);
-
- host->power_mode = ios->power_mode;
-#ifndef RSI_BLKSZ
- if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) {
- pwr_ctl |= ROD_CTL;
-# ifndef CONFIG_SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND
- pwr_ctl |= SD_CMD_OD;
-# endif
- }
-
- if (ios->power_mode != MMC_POWER_OFF)
- pwr_ctl |= PWR_ON;
- else
- pwr_ctl &= ~PWR_ON;
-
- bfin_write_SDH_PWR_CTL(pwr_ctl);
-#else
-# ifndef CONFIG_SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND
- if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN)
- cfg |= SD_CMD_OD;
- else
- cfg &= ~SD_CMD_OD;
-# endif
-
- if (ios->power_mode != MMC_POWER_OFF)
- cfg |= PWR_ON;
- else
- cfg &= ~PWR_ON;
-
- bfin_write_SDH_CFG(cfg);
-#endif
- SSYNC();
-
- if (ios->power_mode == MMC_POWER_ON && ios->clock) {
- unsigned char clk_div;
- clk_div = (get_sclk() / ios->clock - 1) / 2;
- clk_div = min_t(unsigned char, clk_div, 0xFF);
- clk_ctl |= clk_div;
- clk_ctl |= CLK_E;
- host->clk_div = clk_div;
- bfin_write_SDH_CLK_CTL(clk_ctl);
- } else
- sdh_stop_clock(host);
-
- /* set up sdh interrupt mask*/
- if (ios->power_mode == MMC_POWER_ON)
- bfin_write_SDH_MASK0(DAT_END | DAT_TIME_OUT | DAT_CRC_FAIL |
- RX_OVERRUN | TX_UNDERRUN | CMD_SENT | CMD_RESP_END |
- CMD_TIME_OUT | CMD_CRC_FAIL);
- else
- bfin_write_SDH_MASK0(0);
- SSYNC();
-
- spin_unlock(&host->lock);
-
- dev_dbg(mmc_dev(host->mmc), "SDH: clk_div = 0x%x actual clock:%ld expected clock:%d\n",
- host->clk_div,
- host->clk_div ? get_sclk() / (2 * (host->clk_div + 1)) : 0,
- ios->clock);
-}
-
-static const struct mmc_host_ops sdh_ops = {
- .request = sdh_request,
- .set_ios = sdh_set_ios,
-};
-
-static irqreturn_t sdh_dma_irq(int irq, void *devid)
-{
- struct sdh_host *host = devid;
-
- dev_dbg(mmc_dev(host->mmc), "%s enter, irq_stat: 0x%04lx\n", __func__,
- get_dma_curr_irqstat(host->dma_ch));
- clear_dma_irqstat(host->dma_ch);
- SSYNC();
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t sdh_stat_irq(int irq, void *devid)
-{
- struct sdh_host *host = devid;
- unsigned int status;
- int handled = 0;
-
- dev_dbg(mmc_dev(host->mmc), "%s enter\n", __func__);
-
- spin_lock(&host->lock);
-
- status = bfin_read_SDH_E_STATUS();
- if (status & SD_CARD_DET) {
- mmc_detect_change(host->mmc, 0);
- bfin_write_SDH_E_STATUS(SD_CARD_DET);
- }
- status = bfin_read_SDH_STATUS();
- if (status & (CMD_SENT | CMD_RESP_END | CMD_TIME_OUT | CMD_CRC_FAIL)) {
- handled |= sdh_cmd_done(host, status);
- bfin_write_SDH_STATUS_CLR(CMD_SENT_STAT | CMD_RESP_END_STAT | \
- CMD_TIMEOUT_STAT | CMD_CRC_FAIL_STAT);
- SSYNC();
- }
-
- status = bfin_read_SDH_STATUS();
- if (status & (DAT_END | DAT_TIME_OUT | DAT_CRC_FAIL | RX_OVERRUN | TX_UNDERRUN))
- handled |= sdh_data_done(host, status);
-
- spin_unlock(&host->lock);
-
- dev_dbg(mmc_dev(host->mmc), "%s exit\n\n", __func__);
-
- return IRQ_RETVAL(handled);
-}
-
-static void sdh_reset(void)
-{
-#if defined(CONFIG_BF54x)
- /* Secure Digital Host shares DMA with Nand controller */
- bfin_write_DMAC1_PERIMUX(bfin_read_DMAC1_PERIMUX() | 0x1);
-#endif
-
- bfin_write_SDH_CFG(bfin_read_SDH_CFG() | CLKS_EN);
- SSYNC();
-
- /* Disable card inserting detection pin. set MMC_CAP_NEEDS_POLL, and
- * mmc stack will do the detection.
- */
- bfin_write_SDH_CFG((bfin_read_SDH_CFG() & 0x1F) | (PUP_SDDAT | PUP_SDDAT3));
- SSYNC();
-}
-
-static int sdh_probe(struct platform_device *pdev)
-{
- struct mmc_host *mmc;
- struct sdh_host *host;
- struct bfin_sd_host *drv_data = get_sdh_data(pdev);
- int ret;
-
- if (!drv_data) {
- dev_err(&pdev->dev, "missing platform driver data\n");
- ret = -EINVAL;
- goto out;
- }
-
- mmc = mmc_alloc_host(sizeof(struct sdh_host), &pdev->dev);
- if (!mmc) {
- ret = -ENOMEM;
- goto out;
- }
-
- mmc->ops = &sdh_ops;
-#if defined(CONFIG_BF51x)
- mmc->max_segs = 1;
-#else
- mmc->max_segs = PAGE_SIZE / sizeof(struct dma_desc_array);
-#endif
-#ifdef RSI_BLKSZ
- mmc->max_seg_size = -1;
-#else
- mmc->max_seg_size = 1 << 16;
-#endif
- mmc->max_blk_size = 1 << 11;
- mmc->max_blk_count = 1 << 11;
- mmc->max_req_size = PAGE_SIZE;
- mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
- mmc->f_max = get_sclk();
- mmc->f_min = mmc->f_max >> 9;
- mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_NEEDS_POLL;
- host = mmc_priv(mmc);
- host->mmc = mmc;
- host->sclk = get_sclk();
-
- spin_lock_init(&host->lock);
- host->irq = drv_data->irq_int0;
- host->dma_ch = drv_data->dma_chan;
-
- ret = request_dma(host->dma_ch, DRIVER_NAME "DMA");
- if (ret) {
- dev_err(&pdev->dev, "unable to request DMA channel\n");
- goto out1;
- }
-
- ret = set_dma_callback(host->dma_ch, sdh_dma_irq, host);
- if (ret) {
- dev_err(&pdev->dev, "unable to request DMA irq\n");
- goto out2;
- }
-
- host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
- if (host->sg_cpu == NULL) {
- ret = -ENOMEM;
- goto out2;
- }
-
- platform_set_drvdata(pdev, mmc);
-
- ret = request_irq(host->irq, sdh_stat_irq, 0, "SDH Status IRQ", host);
- if (ret) {
- dev_err(&pdev->dev, "unable to request status irq\n");
- goto out3;
- }
-
- ret = peripheral_request_list(drv_data->pin_req, DRIVER_NAME);
- if (ret) {
- dev_err(&pdev->dev, "unable to request peripheral pins\n");
- goto out4;
- }
-
- sdh_reset();
-
- mmc_add_host(mmc);
- return 0;
-
-out4:
- free_irq(host->irq, host);
-out3:
- mmc_remove_host(mmc);
- dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
-out2:
- free_dma(host->dma_ch);
-out1:
- mmc_free_host(mmc);
- out:
- return ret;
-}
-
-static int sdh_remove(struct platform_device *pdev)
-{
- struct mmc_host *mmc = platform_get_drvdata(pdev);
-
- if (mmc) {
- struct sdh_host *host = mmc_priv(mmc);
-
- mmc_remove_host(mmc);
-
- sdh_stop_clock(host);
- free_irq(host->irq, host);
- free_dma(host->dma_ch);
- dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
-
- mmc_free_host(mmc);
- }
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int sdh_suspend(struct platform_device *dev, pm_message_t state)
-{
- struct bfin_sd_host *drv_data = get_sdh_data(dev);
-
- peripheral_free_list(drv_data->pin_req);
-
- return 0;
-}
-
-static int sdh_resume(struct platform_device *dev)
-{
- struct bfin_sd_host *drv_data = get_sdh_data(dev);
- int ret = 0;
-
- ret = peripheral_request_list(drv_data->pin_req, DRIVER_NAME);
- if (ret) {
- dev_err(&dev->dev, "unable to request peripheral pins\n");
- return ret;
- }
-
- sdh_reset();
- return ret;
-}
-#else
-# define sdh_suspend NULL
-# define sdh_resume NULL
-#endif
-
-static struct platform_driver sdh_driver = {
- .probe = sdh_probe,
- .remove = sdh_remove,
- .suspend = sdh_suspend,
- .resume = sdh_resume,
- .driver = {
- .name = DRIVER_NAME,
- },
-};
-
-module_platform_driver(sdh_driver);
-
-MODULE_DESCRIPTION("Blackfin Secure Digital Host Driver");
-MODULE_AUTHOR("Cliff Cai, Roy Huang");
-MODULE_LICENSE("GPL");
--
2.7.4