Re: [PATCH v2 10/12] phy: mediatek: add support for phy-mtk-hdmi-mt8195

From: Chunfeng Yun
Date: Fri Oct 21 2022 - 03:44:48 EST

Next message: Avri Altman: "RE: [PATCH V2] scsi: ufs: core: Let delay value after LPM can be modified by vendor"
Previous message: David Gow: "Re: [PATCH] drm: tests: Fix a buffer overflow in format_helper_test"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

On Fri, 2022-10-14 at 17:16 +0200, Guillaume Ranquet wrote:
> Add basic support for the mediatek hdmi phy on MT8195 SoC
>
> Signed-off-by: Guillaume Ranquet <granquet@xxxxxxxxxxxx>
> ---
> drivers/phy/mediatek/Makefile | 1 +
> drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 546
> +++++++++++++++++++++++++++++
> drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h | 131 +++++++
> drivers/phy/mediatek/phy-mtk-hdmi.c | 3 +
> drivers/phy/mediatek/phy-mtk-hdmi.h | 1 +
> 5 files changed, 682 insertions(+)
>
> diff --git a/drivers/phy/mediatek/Makefile
> b/drivers/phy/mediatek/Makefile
> index fb1f8edaffa7..c9a50395533e 100644
> --- a/drivers/phy/mediatek/Makefile
> +++ b/drivers/phy/mediatek/Makefile
> @@ -12,6 +12,7 @@ obj-$(CONFIG_PHY_MTK_XSPHY) += phy-mtk-
> xsphy.o
> phy-mtk-hdmi-drv-y := phy-mtk-hdmi.o
> phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt2701.o
> phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8173.o
> +phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8195.o
> obj-$(CONFIG_PHY_MTK_HDMI) += phy-mtk-hdmi-drv.o
>
> phy-mtk-mipi-dsi-drv-y := phy-mtk-mipi-dsi.o
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> new file mode 100644
> index 000000000000..6433e002cfdc
> --- /dev/null
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
> @@ -0,0 +1,546 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2021 MediaTek Inc.
> + * Copyright (c) 2021 BayLibre, SAS
2022?

> + */
> +#include <linux/delay.h>
> +#include <linux/io.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/module.h>
> +#include <linux/phy/phy.h>
> +#include <linux/platform_device.h>
> +#include <linux/types.h>
> +#include <linux/nvmem-consumer.h>
> +
> +#include "phy-mtk-io.h"
> +#include "phy-mtk-hdmi.h"
> +#include "phy-mtk-hdmi-mt8195.h"
> +
> +static void mtk_hdmi_ana_fifo_en(struct mtk_hdmi_phy *hdmi_phy)
> +{
> + /* make data fifo writable for hdmi2.0 */
> + mtk_phy_set_bits(hdmi_phy->regs + HDMI_ANA_CTL,
> REG_ANA_HDMI20_FIFO_EN);
> +}
> +
> +static void
> +mtk_mt8195_phy_tmds_high_bit_clk_ratio(struct mtk_hdmi_phy
> *hdmi_phy,
> + bool enable)
> +{
> + void __iomem *regs = hdmi_phy->regs;
> +
> + mtk_hdmi_ana_fifo_en(hdmi_phy);
> +
> + /* HDMI 2.0 specification, 3.4Gbps <= TMDS Bit Rate <= 6G,
> + * clock bit ratio 1:40, under 3.4Gbps, clock bit ratio 1:10
> + */
> + if (enable)
> + mtk_phy_update_field(regs + HDMI20_CLK_CFG,
> REG_TXC_DIV, REG_TXC_DIV);
> + else
> + mtk_phy_clear_bits(regs + HDMI20_CLK_CFG, REG_TXC_DIV);
> +}
> +
> +static void mtk_hdmi_pll_select_source(struct clk_hw *hw)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> + void __iomem *regs = hdmi_phy->regs;
> +
> + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_HDMITX_REF_XTAL_SEL);
> + mtk_phy_clear_bits(regs + HDMI_CTL_3,
> REG_HDMITX_REF_RESPLL_SEL);
> +
> + /* DA_HDMITX21_REF_CK for TXPLL input source */
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_10,
> RG_HDMITXPLL_REF_CK_SEL);
> +}
> +
> +static int mtk_hdmi_pll_performance_setting(struct clk_hw *hw)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> + void __iomem *regs = hdmi_phy->regs;
> +
> + /* BP2 */
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_BP2);
> +
> + /* BC */
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BC);
> +
> + /* IC */
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_IC,
> 0x1);
> +
> + /* BR */
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BR,
> 0x2);
> +
> + /* IR */
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_IR,
> 0x2);
> +
> + /* BP */
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BP);
> +
> + /* IBAND_FIX_EN, RESERVE[14] */
> + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_0,
> RG_HDMITXPLL_IBAND_FIX_EN);
> + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_1,
> RG_HDMITXPLL_RESERVE_BIT14);
> +
> + /* HIKVCO */
> + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_2,
> RG_HDMITXPLL_HIKVCO);
> +
> + /* HREN */
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_0,
> RG_HDMITXPLL_HREN, 0x1);
> +
> + /* LVR_SEL */
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_0,
> RG_HDMITXPLL_LVR_SEL, 0x1);
> +
> + /* RG_HDMITXPLL_RESERVE[12:11] */
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_1,
> RG_HDMITXPLL_RESERVE_BIT12_11);
> +
> + /* TCL_EN */
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_TCL_EN);
> +
> + return 0;
> +}
> +
> +static int mtk_hdmi_pll_set_hw(struct clk_hw *hw, unsigned char
> prediv,
> + unsigned char fbkdiv_high,
> + unsigned long fbkdiv_low,
> + unsigned char fbkdiv_hs3, unsigned char
> posdiv1,
> + unsigned char posdiv2, unsigned char
> txprediv,
> + unsigned char txposdiv,
> + unsigned char digital_div)
> +{
> + unsigned char txposdiv_value = 0;
> + unsigned char div3_ctrl_value = 0;
> + unsigned char posdiv_vallue = 0;
> + unsigned char div_ctrl_value = 0;
> + unsigned char reserve_3_2_value = 0;
> + unsigned char prediv_value = 0;
> + unsigned char reserve13_value = 0;
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> + void __iomem *regs = hdmi_phy->regs;
> +
> + mtk_hdmi_pll_select_source(hw);
> +
> + mtk_hdmi_pll_performance_setting(hw);
> +
> + mtk_phy_update_field(regs + HDMI_1_CFG_10,
> RG_HDMITX21_BIAS_PE_BG_VREF_SEL, 0x2);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_VREF_SEL);
> + mtk_phy_update_field(regs + HDMI_1_CFG_9,
> RG_HDMITX21_SLDO_VREF_SEL, 0x2);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_10,
> RG_HDMITX21_BIAS_PE_VREF_SELB);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDOLPF_EN);
> + mtk_phy_update_field(regs + HDMI_1_CFG_6, RG_HDMITX21_INTR_CAL,
> 0x11);
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD);
> +
> + /* TXPOSDIV */
> + txposdiv_value = ilog2(txposdiv);
> +
> + mtk_phy_update_field(regs + HDMI_1_CFG_6,
> RG_HDMITX21_TX_POSDIV, txposdiv_value);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_6,
> RG_HDMITX21_TX_POSDIV_EN);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_EN);
> +
> + /* TXPREDIV */
> + switch (txprediv) {
> + case 2:
'case' is aligned with 'switch'

> + div3_ctrl_value = 0x0;
> + posdiv_vallue = 0x0;
> + break;
> + case 4:
> + div3_ctrl_value = 0x0;
> + posdiv_vallue = 0x1;
> + break;
> + case 6:
> + div3_ctrl_value = 0x1;
> + posdiv_vallue = 0x0;
> + break;
> + case 12:
> + div3_ctrl_value = 0x1;
> + posdiv_vallue = 0x1;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4,
> RG_HDMITXPLL_POSDIV_DIV3_CTRL, div3_ctrl_value);
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4,
> RG_HDMITXPLL_POSDIV, posdiv_vallue );
> +
> + /* POSDIV1 */
> + switch (posdiv1) {
> + case 5:
> + div_ctrl_value = 0x0;
> + break;
> + case 10:
> + div_ctrl_value = 0x1;
> + break;
> + case 12:
> + div_ctrl_value = 0x2;
> + break;
> + case 15:
> + div_ctrl_value = 0x3;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4,
> RG_HDMITXPLL_DIV_CTRL, div_ctrl_value);
> +
> + /* DE add new setting */
> + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_1,
> RG_HDMITXPLL_RESERVE_BIT14);
> +
> + /* POSDIV2 */
> + switch (posdiv2) {
> + case 1:
> + reserve_3_2_value = 0x0;
> + break;
> + case 2:
> + reserve_3_2_value = 0x1;
> + break;
> + case 4:
> + reserve_3_2_value = 0x2;
> + break;
> + case 6:
> + reserve_3_2_value = 0x3;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1,
> RG_HDMITXPLL_RESERVE_BIT3_2, reserve_3_2_value);
> +
> + /* DE add new setting */
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1,
> RG_HDMITXPLL_RESERVE_BIT1_0, 0x2);
> +
> + /* PREDIV */
> + prediv_value = ilog2(prediv);
> +
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4,
> RG_HDMITXPLL_PREDIV, prediv_value);
> +
> + /* FBKDIV_HS3 */
> + reserve13_value = ilog2(fbkdiv_hs3);
> +
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1,
> RG_HDMITXPLL_RESERVE_BIT13, reserve13_value);
> +
> + /* FBDIV */
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4,
> RG_HDMITXPLL_FBKDIV_HIGH, fbkdiv_high);
> + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_3,
> RG_HDMITXPLL_FBKDIV_LOW, fbkdiv_low);
> +
> +
> + /* Digital DIVIDER */
> + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_PIXEL_CLOCK_SEL);
> +
> + if (digital_div == 1) {
> + mtk_phy_clear_bits(regs + HDMI_CTL_3,
> REG_HDMITX_PIXEL_CLOCK);
> + } else {
> + mtk_phy_set_bits(regs + HDMI_CTL_3,
> REG_HDMITX_PIXEL_CLOCK);
> + mtk_phy_update_field(regs + HDMI_CTL_3,
> REG_HDMITXPLL_DIV, digital_div - 1);
> + }
> +
> + return 0;
> +}
> +
> +#define PCW_DECIMAL_WIDTH 24
> +
> +static int mtk_hdmi_pll_calculate_params(struct clk_hw *hw, unsigned
> long rate,
> + unsigned long parent_rate)
> +{
> + int ret;
> + unsigned long long tmds_clk = 0;
> + unsigned long long pixel_clk = 0;
> + //pll input source frequency
prefer to use '/* */' instead '//'

> + unsigned long long da_hdmitx21_ref_ck = 0;
> + unsigned long long ns_hdmipll_ck = 0; //ICO output clk
> + //source clk for Display digital
> + unsigned long long ad_hdmipll_pixel_ck = 0;
> + unsigned char digital_div = 0;
> + unsigned long long pcw = 0; //FBDIV
> + unsigned char txprediv = 0;
> + unsigned char txposdiv = 0;
> + unsigned char fbkdiv_high = 0;
> + unsigned long fbkdiv_low = 0;
> + unsigned char posdiv1 = 0;
> + unsigned char posdiv2 = 0;
> + unsigned char prediv = 1; //prediv is always 1
> + unsigned char fbkdiv_hs3 = 1; //fbkdiv_hs3 is always 1
> + int i = 0;
> + unsigned char txpredivs[4] = { 2, 4, 6, 12 };
> +
> + pixel_clk = rate;
> + tmds_clk = pixel_clk;
> +
> + if (tmds_clk < 25000000 || tmds_clk > 594000000)
> + return -EINVAL;
> +
> + da_hdmitx21_ref_ck = 26000000UL; //in HZ
> +
> + /* TXPOSDIV stage treatment:
> + * 0M < TMDS clk < 54M /8
> + * 54M <= TMDS clk < 148.35M /4
> + * 148.35M <=TMDS clk < 296.7M /2
> + * 296.7 <=TMDS clk <= 594M /1
> + */
> + if (tmds_clk < 54000000UL)
> + txposdiv = 8;
> + else if (tmds_clk >= 54000000UL && tmds_clk < 148350000UL)
> + txposdiv = 4;
> + else if (tmds_clk >= 148350000UL && tmds_clk < 296700000UL)
> + txposdiv = 2;
> + else if (tmds_clk >= 296700000UL && tmds_clk <= 594000000UL)
> + txposdiv = 1;
> + else
> + return -EINVAL;
> +
> + /* calculate txprediv: can be 2, 4, 6, 12
> + * ICO clk = 5*TMDS_CLK*TXPOSDIV*TXPREDIV
> + * ICO clk constraint: 5G =< ICO clk <= 12G
> + */
> + for (i = 0; i < ARRAY_SIZE(txpredivs); i++) {
> + ns_hdmipll_ck = 5 * tmds_clk * txposdiv * txpredivs[i];
> + if (ns_hdmipll_ck >= 5000000000UL &&
> + ns_hdmipll_ck <= 12000000000UL)
> + break;
> + }
> + if (i == (ARRAY_SIZE(txpredivs) - 1) &&
> + (ns_hdmipll_ck < 5000000000UL || ns_hdmipll_ck >
> 12000000000UL)) {
> + return -EINVAL;
> + }
> + if (i == ARRAY_SIZE(txpredivs))
> + return -EINVAL;
> +
> + txprediv = txpredivs[i];
> +
> + /* PCW calculation: FBKDIV
> + * formula: pcw=(frequency_out*2^pcw_bit) / frequency_in /
> FBKDIV_HS3;
> + * RG_HDMITXPLL_FBKDIV[32:0]:
> + * [32,24] 9bit integer, [23,0]:24bit fraction
> + */
> + pcw = ns_hdmipll_ck;
> + pcw = pcw << PCW_DECIMAL_WIDTH;
> + pcw = pcw / da_hdmitx21_ref_ck;
> + pcw = pcw / fbkdiv_hs3;
> +
> + if ((pcw / BIT(32)) > 1) {
> + return -EINVAL;
> + } else if ((pcw / BIT(32)) == 1) {
> + fbkdiv_high = 1;
> + fbkdiv_low = pcw % BIT(32);
> + } else {
> + fbkdiv_high = 0;
> + fbkdiv_low = pcw;
> + }
> +
> + /* posdiv1:
> + * posdiv1 stage treatment according to color_depth:
> + * 24bit -> posdiv1 /10, 30bit -> posdiv1 /12.5,
> + * 36bit -> posdiv1 /15, 48bit -> posdiv1 /10
> + */
> + posdiv1 = 10; // div 10
> + posdiv2 = 1;
> + ad_hdmipll_pixel_ck = (ns_hdmipll_ck / 10) / 1;
> +
> + /* Digital clk divider, max /32 */
> + digital_div = ad_hdmipll_pixel_ck / pixel_clk;
> + if (!(digital_div <= 32 && digital_div >= 1))
> + return -EINVAL;
> +
> + ret = mtk_hdmi_pll_set_hw(hw, prediv, fbkdiv_high, fbkdiv_low,
> + fbkdiv_hs3, posdiv1, posdiv2,
> txprediv,
> + txposdiv, digital_div);
> + if (ret)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static int mtk_hdmi_pll_drv_setting(struct clk_hw *hw)
> +{
> + unsigned char data_channel_bias, clk_channel_bias;
> + unsigned char impedance, impedance_en;
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> + unsigned long tmds_clk;
> + unsigned long pixel_clk = hdmi_phy->pll_rate;
> + void __iomem *regs = hdmi_phy->regs;
> +
> + tmds_clk = pixel_clk;
> +
> + /* bias & impedance setting:
> + * 3G < data rate <= 6G: enable impedance 100ohm,
> + * data channel bias 24mA, clock channel bias 20mA
> + * pixel clk >= HD, 74.175MHZ <= pixel clk <= 300MHZ:
> + * enalbe impedance 100ohm
> + * data channel 20mA, clock channel 16mA
> + * 27M =< pixel clk < 74.175: disable impedance
> + * data channel & clock channel bias 10mA
> + */
> +
> + /* 3G < data rate <= 6G, 300M < tmds rate <= 594M */
> + if (tmds_clk > 300000000UL && tmds_clk <= 594000000UL) {
> + data_channel_bias = 0x3c; //24mA
> + clk_channel_bias = 0x34; //20mA
> + impedance_en = 0xf;
> + impedance = 0x36; //100ohm
> + } else if (pixel_clk >= 74175000UL && pixel_clk <= 300000000UL)
> {
> + data_channel_bias = 0x34; //20mA
> + clk_channel_bias = 0x2c; //16mA
> + impedance_en = 0xf;
> + impedance = 0x36; //100ohm
> + } else if (pixel_clk >= 27000000UL && pixel_clk < 74175000UL) {
> + data_channel_bias = 0x14; //10mA
> + clk_channel_bias = 0x14; //10mA
> + impedance_en = 0x0;
> + impedance = 0x0;
> + } else {
> + return -EINVAL;
> + }
> +
> + /* bias */
> + mtk_phy_update_field(regs + HDMI_1_CFG_1,
> RG_HDMITX21_DRV_IBIAS_D0, data_channel_bias);
> + mtk_phy_update_field(regs + HDMI_1_CFG_1,
> RG_HDMITX21_DRV_IBIAS_D1, data_channel_bias);
> + mtk_phy_update_field(regs + HDMI_1_CFG_1,
> RG_HDMITX21_DRV_IBIAS_D2, data_channel_bias);
> + mtk_phy_update_field(regs + HDMI_1_CFG_0,
> RG_HDMITX21_DRV_IBIAS_CLK, clk_channel_bias);
> +
> + /* impedance */
> + mtk_phy_update_field(regs + HDMI_1_CFG_0,
> RG_HDMITX21_DRV_IMP_EN, impedance_en);
> + mtk_phy_update_field(regs + HDMI_1_CFG_2,
> RG_HDMITX21_DRV_IMP_D0_EN1, impedance);
> + mtk_phy_update_field(regs + HDMI_1_CFG_2,
> RG_HDMITX21_DRV_IMP_D1_EN1, impedance);
> + mtk_phy_update_field(regs + HDMI_1_CFG_2,
> RG_HDMITX21_DRV_IMP_D2_EN1, impedance);
> + mtk_phy_update_field(regs + HDMI_1_CFG_2,
> RG_HDMITX21_DRV_IMP_CLK_EN1, impedance);
> +
> + return 0;
> +}
> +
> +static int mtk_hdmi_pll_prepare(struct clk_hw *hw)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> + void __iomem *regs = hdmi_phy->regs;
> +
> + mtk_phy_set_bits(regs + HDMI_1_CFG_6,
> RG_HDMITX21_TX_POSDIV_EN);
> +
> + mtk_phy_set_bits(regs + HDMI_1_CFG_0, RG_HDMITX21_SER_EN);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_6,
> RG_HDMITX21_D0_DRV_OP_EN);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_6,
> RG_HDMITX21_D1_DRV_OP_EN);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_6,
> RG_HDMITX21_D2_DRV_OP_EN);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_6,
> RG_HDMITX21_CK_DRV_OP_EN);
> +
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D0_EN);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D1_EN);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D2_EN);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_CK_EN);
> +
> + mtk_hdmi_pll_drv_setting(hw);
> +
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BG_PWD);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_BIAS_EN);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_CKLDO_EN);
> + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDO_EN);
> +
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_PWR_ON);
> + usleep_range(5, 10);
> + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_4,
> DA_HDMITXPLL_ISO_EN);
> + usleep_range(5, 10);
> + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD);
> + usleep_range(30, 50);
> + return 0;
> +}
> +
> +static void mtk_hdmi_pll_unprepare(struct clk_hw *hw)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> + void __iomem *regs = hdmi_phy->regs;
> +
> + mtk_phy_set_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BG_PWD);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_BIAS_EN);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_CKLDO_EN);
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDO_EN);
> +
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD);
> + usleep_range(10, 20);
> + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_ISO_EN);
> + usleep_range(10, 20);
> + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_4,
> DA_HDMITXPLL_PWR_ON);
> +}
> +
> +static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long
> rate,
> + unsigned long parent_rate)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> + int ret;
> +
> + dev_dbg(hdmi_phy->dev, "%s: %lu Hz, parent: %lu Hz\n",
> __func__, rate,
> + parent_rate);
> +
> + ret = mtk_hdmi_pll_calculate_params(hw, rate, parent_rate);
> + if (ret != 0)
> + return -EINVAL;
> +
> + return 0;

return mtk_hdmi_pll_calculate_params(hw, rate, parent_rate);

> +}
> +
> +static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long
> rate,
> + unsigned long *parent_rate)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> +
> + hdmi_phy->pll_rate = rate;
> + return rate;
> +}
> +
> +static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
> + unsigned long
> parent_rate)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
> +
> + return hdmi_phy->pll_rate;
> +}
> +
> +static const struct clk_ops mtk_hdmi_pll_ops = {
> + .prepare = mtk_hdmi_pll_prepare,
> + .unprepare = mtk_hdmi_pll_unprepare,
> + .set_rate = mtk_hdmi_pll_set_rate,
> + .round_rate = mtk_hdmi_pll_round_rate,
> + .recalc_rate = mtk_hdmi_pll_recalc_rate,
> +};
> +
> +static void vtx_signal_en(struct mtk_hdmi_phy *hdmi_phy, bool on)
> +{
> + void __iomem *regs = hdmi_phy->regs;
> +
> + if (on)
> + mtk_phy_set_bits(regs + HDMI_1_CFG_0,
> RG_HDMITX21_DRV_EN);
> + else
> + mtk_phy_clear_bits(regs + HDMI_1_CFG_0,
> RG_HDMITX21_DRV_EN);
> +}
> +
> +static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy)
> +{
> + vtx_signal_en(hdmi_phy, true);
> + usleep_range(100, 150);
> +}
> +
> +static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
> +{
> + vtx_signal_en(hdmi_phy, false);
> +}
> +
> +static int mtk_hdmi_phy_configure(struct phy *phy, union
> phy_configure_opts *opts)
> +{
> + struct phy_configure_opts_dp *dp_opts = &opts->dp;
> + struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
> + int ret = 0;
> + bool enable = 0;
Seems no need local variable "enable"
> +
> + ret = clk_set_rate(hdmi_phy->pll, dp_opts->link_rate);
> +
> + if (ret)
> + goto out;
return ret directly?

> +
> + mtk_mt8195_phy_tmds_high_bit_clk_ratio(hdmi_phy, enable);
> +
> +out:
> + return ret;
> +}
> +
> +struct mtk_hdmi_phy_conf mtk_hdmi_phy_8195_conf = {
> + .flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE,
> + .hdmi_phy_clk_ops = &mtk_hdmi_pll_ops,
> + .hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds,
> + .hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds,
> + .hdmi_phy_configure = mtk_hdmi_phy_configure,
> +};
> +
> +MODULE_AUTHOR("Can Zeng <can.zeng@xxxxxxxxxxxx>");
> +MODULE_DESCRIPTION("MediaTek MT8195 HDMI PHY Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h
> b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h
> new file mode 100644
> index 000000000000..a8202bcc01ca
> --- /dev/null
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h
> @@ -0,0 +1,131 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2021 MediaTek Inc.
> + * Copyright (c) 2021 BayLibre, SAS
2022?

> + */
> +
> +#ifndef _MTK_HDMI_PHY_8195_H
> +#define _MTK_HDMI_PHY_8195_H
> +
> +#include <linux/types.h>
move it after <linux/clk-provider.h>?

> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +
> +#define DA_HDMITXPLL_ISO_EN BIT(1)
> +#define DA_HDMITXPLL_PWR_ON BIT(2)
> +
> +#define HDMI20_CLK_CFG 0x70
> +
> +#define HDMI_1_CFG_0 0x00
> +#define HDMI_1_CFG_1 0x04
> +#define HDMI_1_CFG_10 0x40
> +#define HDMI_1_CFG_2 0x08
> +#define HDMI_1_CFG_21 0x84
> +#define HDMI_1_CFG_22 0x88
> +#define HDMI_1_CFG_3 0x0c
> +#define HDMI_1_CFG_6 0x18
> +#define HDMI_1_CFG_9 0x24
> +#define HDMI_1_PLL_CFG_0 0x44
> +#define HDMI_1_PLL_CFG_1 0x48
> +#define HDMI_1_PLL_CFG_2 0x4c
> +#define HDMI_1_PLL_CFG_3 0x50
> +#define HDMI_1_PLL_CFG_4 0x54
> +
> +#define HDMI_ANA_CTL 0x7c
> +
> +#define HDMI_CTL_1 0xc4
> +#define HDMI_CTL_3 0xcc
> +
> +#define REG_ANA_HDMI20_FIFO_EN BIT(16)
> +
> +#define REG_HDMITXPLL_DIV GENMASK(4, 0)
> +#define REG_HDMITX_PIXEL_CLOCK BIT(23)
> +#define REG_HDMITX_REF_RESPLL_SEL BIT(9)
> +#define REG_HDMITX_REF_XTAL_SEL BIT(7)
> +
> +#define REG_PIXEL_CLOCK_SEL BIT(10)
> +
> +#define REG_TXC_DIV GENMASK(31, 30)
> +
> +#define RG_HDMITX21_BG_PWD BIT(20)
> +
> +#define RG_HDMITX21_BIAS_EN BIT(29)
> +#define RG_HDMITX21_BIAS_PE_BG_VREF_SEL GENMASK(16, 15)
> +#define RG_HDMITX21_BIAS_PE_VREF_SELB BIT(10)
> +
> +#define RG_HDMITX21_CKLDO_EN BIT(3)
> +
> +#define RG_HDMITX21_CK_DRV_OP_EN BIT(11)
> +
> +#define RG_HDMITX21_D0_DRV_OP_EN BIT(10)
> +
> +#define RG_HDMITX21_D1_DRV_OP_EN BIT(9)
> +
> +#define RG_HDMITX21_D2_DRV_OP_EN BIT(8)
> +
> +#define RG_HDMITX21_DRV_EN GENMASK(27, 24)
> +#define RG_HDMITX21_DRV_IBIAS_CLK GENMASK(10, 5)
> +#define RG_HDMITX21_DRV_IBIAS_D0 GENMASK(19, 14)
> +#define RG_HDMITX21_DRV_IBIAS_D0_FFE1 GENMASK(21, 17)
> +#define RG_HDMITX21_DRV_IBIAS_D0_FFE2 GENMASK(23, 20)
> +#define RG_HDMITX21_DRV_IBIAS_D1 GENMASK(25, 20)
> +#define RG_HDMITX21_DRV_IBIAS_D1_FFE1 GENMASK(26, 22)
> +#define RG_HDMITX21_DRV_IBIAS_D1_FFE2 GENMASK(27, 24)
> +#define RG_HDMITX21_DRV_IBIAS_D2 GENMASK(31, 26)
> +#define RG_HDMITX21_DRV_IBIAS_D2_FFE1 GENMASK(31, 27)
> +#define RG_HDMITX21_DRV_IBIAS_D2_FFE2 GENMASK(31, 28)
> +#define RG_HDMITX21_DRV_IMP_CLK_EN1 GENMASK(31, 26)
> +#define RG_HDMITX21_DRV_IMP_D0_EN1 GENMASK(13, 8)
> +#define RG_HDMITX21_DRV_IMP_D1_EN1 GENMASK(19, 14)
> +#define RG_HDMITX21_DRV_IMP_D2_EN1 GENMASK(25, 20)
> +#define RG_HDMITX21_DRV_IMP_EN GENMASK(23, 20)
> +
> +#define RG_HDMITX21_FRL_CK_EN BIT(13)
> +#define RG_HDMITX21_FRL_D0_EN BIT(14)
> +#define RG_HDMITX21_FRL_D1_EN BIT(15)
> +#define RG_HDMITX21_FRL_D2_EN BIT(16)
> +#define RG_HDMITX21_FRL_EN BIT(12)
> +
> +#define RG_HDMITX21_INTR_CAL GENMASK(22, 18)
> +#define RG_HDMITX21_INTR_CAL_READOUT GENMASK(22, 18)
> +
> +#define RG_HDMITX21_SER_EN GENMASK(31, 28)
> +
> +#define RG_HDMITX21_SLDOLPF_EN BIT(7)
> +#define RG_HDMITX21_SLDO_EN GENMASK(11, 8)
> +#define RG_HDMITX21_SLDO_VREF_SEL GENMASK(5, 4)
> +
> +#define RG_HDMITX21_TX_POSDIV GENMASK(27, 26)
> +#define RG_HDMITX21_TX_POSDIV_EN BIT(28)
> +
> +#define RG_HDMITX21_VREF_SEL BIT(4)
> +
> +#define RG_HDMITXPLL_BC GENMASK(28, 27)
> +#define RG_HDMITXPLL_BP GENMASK(13, 10)
> +#define RG_HDMITXPLL_BP2 BIT(30)
> +#define RG_HDMITXPLL_BR GENMASK(21, 19)
> +#define RG_HDMITXPLL_DIV_CTRL GENMASK(25, 24)
> +#define RG_HDMITXPLL_FBKDIV_HIGH BIT(31)
> +#define RG_HDMITXPLL_FBKDIV_LOW (0xffffffff)
make sure it includes bit 31? use GENMASK()?

> +#define RG_HDMITXPLL_HIKVCO BIT(29)
> +#define RG_HDMITXPLL_HREN GENMASK(13, 12)
> +#define RG_HDMITXPLL_IBAND_FIX_EN BIT(24)
> +#define RG_HDMITXPLL_IC GENMASK(26, 22)
> +#define RG_HDMITXPLL_IR GENMASK(18, 14)
> +#define RG_HDMITXPLL_LVR_SEL GENMASK(27, 26)
> +#define RG_HDMITXPLL_POSDIV GENMASK(23, 22)
> +#define RG_HDMITXPLL_POSDIV_DIV3_CTRL BIT(21)
> +#define RG_HDMITXPLL_PREDIV GENMASK(29, 28)
> +#define RG_HDMITXPLL_PWD BIT(31)
> +#define RG_HDMITXPLL_REF_CK_SEL GENMASK(2, 1)
> +#define RG_HDMITXPLL_RESERVE GENMASK(15, 0)
> +#define RG_HDMITXPLL_RESERVE_BIT12_11 GENMASK(12, 11)
> +#define RG_HDMITXPLL_RESERVE_BIT13 BIT(13)
> +#define RG_HDMITXPLL_RESERVE_BIT14 BIT(14)
> +#define RG_HDMITXPLL_RESERVE_BIT1_0 GENMASK(1, 0)
> +#define RG_HDMITXPLL_RESERVE_BIT3_2 GENMASK(3, 2)
> +#define RG_HDMITXPLL_TCL_EN BIT(31)
> +
> +#define RG_INTR_IMP_RG_MODE GENMASK(7, 3)
It's difficult to distinguish the bits/mask which the register it
belongs to.

Do you define it according to the bits sequence in register?

Thanks

> +
> +#endif /* MTK_HDMI_PHY_8195_H */
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.c
> b/drivers/phy/mediatek/phy-mtk-hdmi.c
> index 32f713301768..d2e824771f9d 100644
> --- a/drivers/phy/mediatek/phy-mtk-hdmi.c
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi.c
> @@ -161,6 +161,9 @@ static const struct of_device_id
> mtk_hdmi_phy_match[] = {
> { .compatible = "mediatek,mt8173-hdmi-phy",
> .data = &mtk_hdmi_phy_8173_conf,
> },
> + { .compatible = "mediatek,mt8195-hdmi-phy",
> + .data = &mtk_hdmi_phy_8195_conf,
> + },
> {},
> };
> MODULE_DEVICE_TABLE(of, mtk_hdmi_phy_match);
> diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.h
> b/drivers/phy/mediatek/phy-mtk-hdmi.h
> index f5aac9d352d8..9dfb725fc57f 100644
> --- a/drivers/phy/mediatek/phy-mtk-hdmi.h
> +++ b/drivers/phy/mediatek/phy-mtk-hdmi.h
> @@ -44,6 +44,7 @@ struct mtk_hdmi_phy {
>
> struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw);
>
> +extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8195_conf;
> extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf;
> extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf;
>
>

Next message: Avri Altman: "RE: [PATCH V2] scsi: ufs: core: Let delay value after LPM can be modified by vendor"
Previous message: David Gow: "Re: [PATCH] drm: tests: Fix a buffer overflow in format_helper_test"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]