Re: [PATCH v1 4/7] drm/mediatek: add hdmi driver for different hardware
From: CK Hu
Date: Mon May 28 2018 - 04:32:53 EST
Hi, Bibby:
On Mon, 2018-05-14 at 15:52 +0800, Bibby Hsieh wrote:
> From: chunhui dai <chunhui.dai@xxxxxxxxxxxx>
>
> This patch adds hdmi driver suppot for both MT2701 and MT7623.
> And also support other (existing or future) chips that use
> the same binding and driver.
I think this patch should be separated to at least two patches.
The first is to isolate the different part for mt8173. And the second is
to add mt2701 part.
Regards,
CK
>
> Signed-off-by: Chunhui Dai <chunhui.dai@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/mediatek/Makefile | 4 +-
> drivers/gpu/drm/mediatek/mtk_hdmi.c | 91 +++++---
> drivers/gpu/drm/mediatek/mtk_hdmi.h | 28 +++
> drivers/gpu/drm/mediatek/mtk_hdmi_phy.c | 157 +++++++++++++
> drivers/gpu/drm/mediatek/mtk_hdmi_regs.h | 1 +
> drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c | 307 +++++++++++++++++++++++++
> drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c | 129 +----------
> 7 files changed, 568 insertions(+), 149 deletions(-)
> create mode 100644 drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
> create mode 100644 drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
>
> diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
> index ce83c396a742..44464893c1cb 100644
> --- a/drivers/gpu/drm/mediatek/Makefile
> +++ b/drivers/gpu/drm/mediatek/Makefile
> @@ -18,6 +18,8 @@ obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o
> mediatek-drm-hdmi-objs := mtk_cec.o \
> mtk_hdmi.o \
> mtk_hdmi_ddc.o \
> - mtk_mt8173_hdmi_phy.o
> + mtk_mt2701_hdmi_phy.o \
> + mtk_mt8173_hdmi_phy.o \
> + mtk_hdmi_phy.o
>
> obj-$(CONFIG_DRM_MEDIATEK_HDMI) += mediatek-drm-hdmi.o
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index 59a11026dceb..85e280962aad 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> @@ -233,6 +233,7 @@ static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
> static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
> {
> struct arm_smccc_res res;
> + struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(hdmi->phy);
>
> /*
> * MT8173 HDMI hardware has an output control bit to enable/disable HDMI
> @@ -240,8 +241,13 @@ static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
> * The ARM trusted firmware provides an API for the HDMI driver to set
> * this control bit to enable HDMI output in supervisor mode.
> */
> - arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904, 0x80000000,
> - 0, 0, 0, 0, 0, &res);
> + if (hdmi_phy->conf && hdmi_phy->conf->tz_enabled)
> + arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904,
> + 0x80000000, 0, 0, 0, 0, 0, &res);
> + else
> + regmap_update_bits(hdmi->sys_regmap,
> + hdmi->sys_offset + HDMI_SYS_CFG20,
> + HDMI_PSECUR_EN, enable ? 0 : HDMI_PSECUR_EN);
>
> regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
> HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0);
> @@ -1437,6 +1443,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
> struct platform_device *cec_pdev;
> struct regmap *regmap;
> struct resource *mem;
> + const char *phy_name;
> int ret;
>
> ret = mtk_hdmi_get_all_clk(hdmi, np);
> @@ -1445,9 +1452,20 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
> return ret;
> }
>
> + ret = of_property_read_string(np, "phy-names", &phy_name);
> + if (ret < 0) {
> + dev_err(dev, "Failed to read phy-names: %d\n", ret);
> + return ret;
> + }
> + hdmi->phy = devm_phy_get(dev, phy_name);
> + if (IS_ERR(hdmi->phy)) {
> + ret = PTR_ERR(hdmi->phy);
> + dev_err(dev, "Failed to get HDMI PHY: %d\n", ret);
> + return ret;
> + }
> +
> /* The CEC module handles HDMI hotplug detection */
> - cec_np = of_find_compatible_node(np->parent, NULL,
> - "mediatek,mt8173-cec");
> + cec_np = of_parse_phandle(np, "cec", 0);
> if (!cec_np) {
> dev_err(dev, "Failed to find CEC node\n");
> return -EINVAL;
> @@ -1486,8 +1504,14 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
> return PTR_ERR(hdmi->regs);
>
> remote = of_graph_get_remote_node(np, 1, 0);
> - if (!remote)
> - return -EINVAL;
> + if (!remote) {
> + i2c_np = of_parse_phandle(np, "ddc-i2c-bus", 0);
> + if (!i2c_np) {
> + dev_err(dev, "Failed to find ddc-i2c-bus node\n");
> + return -EINVAL;
> + }
> + goto find_ddc_adpt;
> + }
>
> if (!of_device_is_compatible(remote, "hdmi-connector")) {
> hdmi->next_bridge = of_drm_find_bridge(remote);
> @@ -1507,6 +1531,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
> }
> of_node_put(remote);
>
> +find_ddc_adpt:
> hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
> if (!hdmi->ddc_adpt) {
> dev_err(dev, "Failed to get ddc i2c adapter by node\n");
> @@ -1575,6 +1600,11 @@ static int mtk_hdmi_audio_hw_params(struct device *dev, void *data,
> hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
> hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS;
> break;
> + case HDMI_SPDIF:
> + hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
> + hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
> + hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF;
> + break;
> default:
> dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
> daifmt->fmt);
> @@ -1650,15 +1680,16 @@ static void mtk_hdmi_register_audio_driver(struct device *dev)
> .max_i2s_channels = 2,
> .i2s = 1,
> };
> - struct platform_device *pdev;
> -
> - pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
> - PLATFORM_DEVID_AUTO, &codec_data,
> - sizeof(codec_data));
> - if (IS_ERR(pdev))
> + static struct platform_device *pdev;
> +
> + if (!pdev) {
> + pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
> + PLATFORM_DEVID_NONE,
> + &codec_data,
> + sizeof(codec_data));
> + DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME);
> + }
> return;
> -
> - DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME);
> }
>
> static int mtk_drm_hdmi_probe(struct platform_device *pdev)
> @@ -1672,18 +1703,12 @@ static int mtk_drm_hdmi_probe(struct platform_device *pdev)
> return -ENOMEM;
>
> hdmi->dev = dev;
> + mtk_hdmi_register_audio_driver(dev);
>
> ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev);
> if (ret)
> return ret;
>
> - hdmi->phy = devm_phy_get(dev, "hdmi");
> - if (IS_ERR(hdmi->phy)) {
> - ret = PTR_ERR(hdmi->phy);
> - dev_err(dev, "Failed to get HDMI PHY: %d\n", ret);
> - return ret;
> - }
> -
> platform_set_drvdata(pdev, hdmi);
>
> ret = mtk_hdmi_output_init(hdmi);
> @@ -1692,8 +1717,6 @@ static int mtk_drm_hdmi_probe(struct platform_device *pdev)
> return ret;
> }
>
> - mtk_hdmi_register_audio_driver(dev);
> -
> hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
> hdmi->bridge.of_node = pdev->dev.of_node;
> drm_bridge_add(&hdmi->bridge);
> @@ -1704,7 +1727,6 @@ static int mtk_drm_hdmi_probe(struct platform_device *pdev)
> goto err_bridge_remove;
> }
>
> - dev_dbg(dev, "mediatek hdmi probe success\n");
> return 0;
>
> err_bridge_remove:
> @@ -1773,8 +1795,25 @@ static struct platform_driver * const mtk_hdmi_drivers[] = {
>
> static int __init mtk_hdmitx_init(void)
> {
> - return platform_register_drivers(mtk_hdmi_drivers,
> - ARRAY_SIZE(mtk_hdmi_drivers));
> + int ret;
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(mtk_hdmi_drivers); i++) {
> + ret = platform_driver_register(mtk_hdmi_drivers[i]);
> + if (ret < 0) {
> + pr_err("Failed to register %s driver: %d\n",
> + mtk_hdmi_drivers[i]->driver.name, ret);
> + goto err;
> + }
> + }
> +
> + return 0;
> +
> +err:
> + while (--i >= 0)
> + platform_driver_unregister(mtk_hdmi_drivers[i]);
> +
> + return ret;
> }
>
> static void __exit mtk_hdmitx_exit(void)
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.h b/drivers/gpu/drm/mediatek/mtk_hdmi.h
> index 6371b3de1ff6..a4546b83329f 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.h
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.h
> @@ -13,11 +13,39 @@
> */
> #ifndef _MTK_HDMI_CTRL_H
> #define _MTK_HDMI_CTRL_H
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/platform_device.h>
> +#include <linux/phy/phy.h>
> +
> +struct mtk_hdmi_phy_conf {
> + bool tz_enabled;
> + const struct clk_ops *hdmi_phy_clk_ops;
> + const struct phy_ops *hdmi_phy_dev_ops;
> +};
> +
> +struct mtk_hdmi_phy {
> + void __iomem *regs;
> + struct device *dev;
> + struct mtk_hdmi_phy_conf *conf;
> + struct clk *pll;
> + struct clk_hw pll_hw;
> + unsigned long pll_rate;
> + unsigned char drv_imp_clk;
> + unsigned char drv_imp_d2;
> + unsigned char drv_imp_d1;
> + unsigned char drv_imp_d0;
> + unsigned int ibias;
> + unsigned int ibias_up;
> +};
>
> struct platform_driver;
>
> extern struct platform_driver mtk_cec_driver;
> extern struct platform_driver mtk_hdmi_ddc_driver;
> extern struct platform_driver mtk_hdmi_phy_driver;
> +extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf;
> +extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf;
> +
>
> #endif /* _MTK_HDMI_CTRL_H */
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
> new file mode 100644
> index 000000000000..325790abd469
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
> @@ -0,0 +1,157 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2018 MediaTek Inc.
> + * Author: Jie Qiu <jie.qiu@xxxxxxxxxxxx>
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/of_platform.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/delay.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/phy/phy.h>
> +#include "mtk_hdmi.h"
> +
> +static void mtk_hdmi_phy_clk_get_ops(struct mtk_hdmi_phy *hdmi_phy,
> + const struct clk_ops **ops)
> +{
> + if (hdmi_phy && hdmi_phy->conf && hdmi_phy->conf->hdmi_phy_clk_ops)
> + *ops = hdmi_phy->conf->hdmi_phy_clk_ops;
> + else
> + dev_err(hdmi_phy->dev, "Failed to get clk ops of phy\n");
> +}
> +
> +static const struct phy_ops *
> +mtk_hdmi_phy_dev_get_ops(const struct mtk_hdmi_phy *hdmi_phy)
> +{
> + if (hdmi_phy && hdmi_phy->conf && hdmi_phy->conf->hdmi_phy_dev_ops)
> + return hdmi_phy->conf->hdmi_phy_dev_ops;
> + dev_err(hdmi_phy->dev, "Failed to get dev ops of phy\n");
> + return NULL;
> +}
> +
> +static int mtk_hdmi_phy_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct mtk_hdmi_phy *hdmi_phy;
> + struct resource *mem;
> + struct clk *ref_clk;
> + const char *ref_clk_name;
> + struct clk_init_data clk_init = {
> + .num_parents = 1,
> + .parent_names = (const char * const *)&ref_clk_name,
> + .flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE,
> + };
> +
> + struct phy *phy;
> + struct phy_provider *phy_provider;
> + int ret;
> +
> + hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL);
> + if (!hdmi_phy)
> + return -ENOMEM;
> +
> + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + hdmi_phy->regs = devm_ioremap_resource(dev, mem);
> + if (IS_ERR(hdmi_phy->regs)) {
> + ret = PTR_ERR(hdmi_phy->regs);
> + dev_err(dev, "Failed to get memory resource: %d\n", ret);
> + return ret;
> + }
> +
> + ref_clk = devm_clk_get(dev, "pll_ref");
> + if (IS_ERR(ref_clk)) {
> + ret = PTR_ERR(ref_clk);
> + dev_err(&pdev->dev, "Failed to get PLL reference clock: %d\n",
> + ret);
> + return ret;
> + }
> + ref_clk_name = __clk_get_name(ref_clk);
> +
> + ret = of_property_read_string(dev->of_node, "clock-output-names",
> + &clk_init.name);
> + if (ret < 0) {
> + dev_err(dev, "Failed to read clock-output-names: %d\n", ret);
> + return ret;
> + }
> +
> + hdmi_phy->dev = dev;
> + hdmi_phy->conf =
> + (struct mtk_hdmi_phy_conf *)of_device_get_match_data(dev);
> + mtk_hdmi_phy_clk_get_ops(hdmi_phy, &clk_init.ops);
> + hdmi_phy->pll_hw.init = &clk_init;
> + hdmi_phy->pll = devm_clk_register(dev, &hdmi_phy->pll_hw);
> + if (IS_ERR(hdmi_phy->pll)) {
> + ret = PTR_ERR(hdmi_phy->pll);
> + dev_err(dev, "Failed to register PLL: %d\n", ret);
> + return ret;
> + }
> +
> + ret = of_property_read_u32(dev->of_node, "mediatek,ibias",
> + &hdmi_phy->ibias);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "Failed to get ibias: %d\n", ret);
> + return ret;
> + }
> +
> + ret = of_property_read_u32(dev->of_node, "mediatek,ibias_up",
> + &hdmi_phy->ibias_up);
> + if (ret < 0) {
> + dev_err(&pdev->dev, "Failed to get ibias up: %d\n", ret);
> + return ret;
> + }
> +
> + dev_info(dev, "Using default TX DRV impedance: 4.2k/36\n");
> + hdmi_phy->drv_imp_clk = 0x30;
> + hdmi_phy->drv_imp_d2 = 0x30;
> + hdmi_phy->drv_imp_d1 = 0x30;
> + hdmi_phy->drv_imp_d0 = 0x30;
> +
> + phy = devm_phy_create(dev, NULL, mtk_hdmi_phy_dev_get_ops(hdmi_phy));
> + if (IS_ERR(phy)) {
> + dev_err(dev, "Failed to create HDMI PHY\n");
> + return PTR_ERR(phy);
> + }
> + phy_set_drvdata(phy, hdmi_phy);
> +
> + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> + if (IS_ERR(phy_provider)) {
> + dev_err(dev, "Failed to register HDMI PHY\n");
> + return PTR_ERR(phy_provider);
> + }
> +
> + return of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
> + hdmi_phy->pll);
> +}
> +
> +static int mtk_hdmi_phy_remove(struct platform_device *pdev)
> +{
> + return 0;
> +}
> +
> +static const struct of_device_id mtk_hdmi_phy_match[] = {
> + { .compatible = "mediatek,mt2701-hdmi-phy",
> + .data = &mtk_hdmi_phy_2701_conf,
> + },
> + { .compatible = "mediatek,mt8173-hdmi-phy",
> + .data = &mtk_hdmi_phy_8173_conf,
> + },
> + {},
> +};
> +
> +struct platform_driver mtk_hdmi_phy_driver = {
> + .probe = mtk_hdmi_phy_probe,
> + .remove = mtk_hdmi_phy_remove,
> + .driver = {
> + .name = "mediatek-hdmi-phy",
> + .of_match_table = mtk_hdmi_phy_match,
> + },
> +};
> +
> +MODULE_DESCRIPTION("MediaTek HDMI PHY Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h b/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h
> index a5cb07d12c9c..e53c6646571c 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_regs.h
> @@ -227,6 +227,7 @@
> #define DEEP_COLOR_EN BIT(0)
> #define HDMI_AUDIO_TEST_SEL BIT(8)
> #define HDMI2P0_EN BIT(11)
> +#define HDMI_PSECUR_EN BIT(15)
> #define HDMI_OUT_FIFO_EN BIT(16)
> #define HDMI_OUT_FIFO_CLK_INV BIT(17)
> #define MHL_MODE_ON BIT(28)
> diff --git a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
> new file mode 100644
> index 000000000000..8af5e6c1aecc
> --- /dev/null
> +++ b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
> @@ -0,0 +1,307 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + *Copyright (c) 2018 MediaTek Inc.
> + *Author: Chunhui Dai <chunhui.dai@xxxxxxxxxxxx>
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/clk-provider.h>
> +#include <linux/debugfs.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/of_platform.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/delay.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/phy/phy.h>
> +#include "mtk_hdmi.h"
> +
> +#define HDMI_CON0 0x00
> +#define RG_HDMITX_DRV_IBIAS (0)
> +#define RG_HDMITX_DRV_IBIAS_MASK (0x3F << 0)
> +#define RG_HDMITX_EN_SER (12)
> +#define RG_HDMITX_EN_SER_MASK (0x0F << 12)
> +#define RG_HDMITX_EN_SLDO (16)
> +#define RG_HDMITX_EN_SLDO_MASK (0x0F << 16)
> +#define RG_HDMITX_EN_PRED (20)
> +#define RG_HDMITX_EN_PRED_MASK (0x0F << 20)
> +#define RG_HDMITX_EN_IMP (24)
> +#define RG_HDMITX_EN_IMP_MASK (0x0F << 24)
> +#define RG_HDMITX_EN_DRV (28)
> +#define RG_HDMITX_EN_DRV_MASK (0x0F << 28)
> +
> +#define HDMI_CON1 0x04
> +#define RG_HDMITX_PRED_IBIAS (18)
> +#define RG_HDMITX_PRED_IBIAS_MASK (0x0F << 18)
> +#define RG_HDMITX_PRED_IMP (0x01 << 22)
> +#define RG_HDMITX_DRV_IMP (26)
> +#define RG_HDMITX_DRV_IMP_MASK (0x3F << 26)
> +
> +#define HDMI_CON2 0x08
> +#define RG_HDMITX_EN_TX_CKLDO (0x01 << 0)
> +#define RG_HDMITX_EN_TX_POSDIV (0x01 << 1)
> +#define RG_HDMITX_TX_POSDIV (3)
> +#define RG_HDMITX_TX_POSDIV_MASK (0x03 << 3)
> +#define RG_HDMITX_EN_MBIAS (0x01 << 6)
> +#define RG_HDMITX_MBIAS_LPF_EN (0x01 << 7)
> +
> +#define HDMI_CON4 0x10
> +#define RG_HDMITX_RESERVE_MASK (0xFFFFFFFF << 0)
> +
> +#define HDMI_CON6 0x18
> +#define RG_HTPLL_BR (0)
> +#define RG_HTPLL_BR_MASK (0x03 << 0)
> +#define RG_HTPLL_BC (2)
> +#define RG_HTPLL_BC_MASK (0x03 << 2)
> +#define RG_HTPLL_BP (4)
> +#define RG_HTPLL_BP_MASK (0x0F << 4)
> +#define RG_HTPLL_IR (8)
> +#define RG_HTPLL_IR_MASK (0x0F << 8)
> +#define RG_HTPLL_IC (12)
> +#define RG_HTPLL_IC_MASK (0x0F << 12)
> +#define RG_HTPLL_POSDIV (16)
> +#define RG_HTPLL_POSDIV_MASK (0x03 << 16)
> +#define RG_HTPLL_PREDIV (18)
> +#define RG_HTPLL_PREDIV_MASK (0x03 << 18)
> +#define RG_HTPLL_FBKSEL (20)
> +#define RG_HTPLL_FBKSEL_MASK (0x03 << 20)
> +#define RG_HTPLL_RLH_EN (0x01 << 22)
> +#define RG_HTPLL_FBKDIV (24)
> +#define RG_HTPLL_FBKDIV_MASK (0x7F << 24)
> +#define RG_HTPLL_EN (0x01 << 31)
> +
> +#define HDMI_CON7 0x1c
> +#define RG_HTPLL_AUTOK_EN (0x01 << 23)
> +#define RG_HTPLL_DIVEN (28)
> +#define RG_HTPLL_DIVEN_MASK (0x07 << 28)
> +
> +static inline struct mtk_hdmi_phy *to_mtk_hdmi_pll(struct clk_hw *hw)
> +{
> + return container_of(hw, struct mtk_hdmi_phy, pll_hw);
> +}
> +
> +static inline void mtk_hdmi_pll_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset,
> + u32 val, u32 mask)
> +{
> + u32 tmp = readl(hdmi_phy->regs + offset) & ~mask;
> +
> + tmp |= (val & mask);
> + writel(tmp, hdmi_phy->regs + offset);
> +}
> +
> +static int mtk_hdmi_pll_enable(struct clk_hw *hw)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_pll(hw);
> +
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN,
> + RG_HTPLL_AUTOK_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_RLH_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x3 << RG_HTPLL_POSDIV),
> + RG_HTPLL_POSDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS,
> + RG_HDMITX_EN_MBIAS);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, RG_HTPLL_EN, RG_HTPLL_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO,
> + RG_HDMITX_EN_TX_CKLDO);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_SLDO),
> + RG_HDMITX_EN_SLDO_MASK);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN,
> + RG_HDMITX_MBIAS_LPF_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV,
> + RG_HDMITX_EN_TX_POSDIV);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_SER),
> + RG_HDMITX_EN_SER_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_PRED),
> + RG_HDMITX_EN_PRED_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_DRV),
> + RG_HDMITX_EN_DRV_MASK);
> + usleep_range(80, 100);
> + return 0;
> +}
> +
> +static void mtk_hdmi_pll_disable(struct clk_hw *hw)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_pll(hw);
> +
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_DRV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_PRED_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_SER_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_EN_TX_POSDIV);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_MBIAS_LPF_EN);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_SLDO_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_EN_TX_CKLDO);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_EN);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_EN_MBIAS);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_POSDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_RLH_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON7, 0, RG_HTPLL_AUTOK_EN);
> + usleep_range(80, 100);
> +}
> +
> +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_pll(hw);
> + u32 pos_div;
> +
> + if (rate <= 64000000)
> + pos_div = 3;
> + else if (rate <= 12800000)
> + pos_div = 1;
> + else
> + pos_div = 1;
> +
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x3 << RG_HTPLL_PREDIV),
> + RG_HTPLL_PREDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x3 << RG_HTPLL_POSDIV),
> + RG_HTPLL_POSDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IC),
> + RG_HTPLL_IC_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IR),
> + RG_HTPLL_IR_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, (pos_div << RG_HDMITX_TX_POSDIV),
> + RG_HDMITX_TX_POSDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (1 << RG_HTPLL_FBKSEL),
> + RG_HTPLL_FBKSEL_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (19 << RG_HTPLL_FBKDIV),
> + RG_HTPLL_FBKDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON7, (0x2 << RG_HTPLL_DIVEN),
> + RG_HTPLL_DIVEN_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0xc << RG_HTPLL_BP),
> + RG_HTPLL_BP_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x2 << RG_HTPLL_BC),
> + RG_HTPLL_BC_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_BR),
> + RG_HTPLL_BR_MASK);
> +
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON1, 0, RG_HDMITX_PRED_IMP);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON1, (0x3 << RG_HDMITX_PRED_IBIAS),
> + RG_HDMITX_PRED_IBIAS_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0x0 << RG_HDMITX_EN_IMP),
> + RG_HDMITX_EN_IMP_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON1, (0x28 << RG_HDMITX_DRV_IMP),
> + RG_HDMITX_DRV_IMP_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON4, 0x28, RG_HDMITX_RESERVE_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xa << RG_HDMITX_DRV_IBIAS),
> + RG_HDMITX_DRV_IBIAS_MASK);
> + return 0;
> +}
> +
> +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_pll(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_pll(hw);
> +
> + return hdmi_phy->pll_rate;
> +}
> +
> +static const struct clk_ops mtk_hdmi_phy_pll_ops = {
> + .enable = mtk_hdmi_pll_enable,
> + .disable = mtk_hdmi_pll_disable,
> + .set_rate = mtk_hdmi_pll_set_rate,
> + .round_rate = mtk_hdmi_pll_round_rate,
> + .recalc_rate = mtk_hdmi_pll_recalc_rate,
> +};
> +
> +static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy)
> +{
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN,
> + RG_HTPLL_AUTOK_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_RLH_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, (0x3 << RG_HTPLL_POSDIV),
> + RG_HTPLL_POSDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS,
> + RG_HDMITX_EN_MBIAS);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, RG_HTPLL_EN, RG_HTPLL_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO,
> + RG_HDMITX_EN_TX_CKLDO);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_SLDO),
> + RG_HDMITX_EN_SLDO_MASK);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN,
> + RG_HDMITX_MBIAS_LPF_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV,
> + RG_HDMITX_EN_TX_POSDIV);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_SER),
> + RG_HDMITX_EN_SER_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_PRED),
> + RG_HDMITX_EN_PRED_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, (0xf << RG_HDMITX_EN_DRV),
> + RG_HDMITX_EN_DRV_MASK);
> + usleep_range(80, 100);
> +}
> +
> +static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
> +{
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_DRV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_PRED_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_SER_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_EN_TX_POSDIV);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_MBIAS_LPF_EN);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON0, 0, RG_HDMITX_EN_SLDO_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_EN_TX_CKLDO);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_EN);
> + usleep_range(80, 100);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON2, 0, RG_HDMITX_EN_MBIAS);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_POSDIV_MASK);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON6, 0, RG_HTPLL_RLH_EN);
> + mtk_hdmi_pll_mask(hdmi_phy, HDMI_CON7, 0, RG_HTPLL_AUTOK_EN);
> + usleep_range(80, 100);
> +}
> +
> +static int mtk_hdmi_phy_power_on(struct phy *phy)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
> + int ret;
> +
> + ret = clk_prepare_enable(hdmi_phy->pll);
> + if (ret < 0)
> + return ret;
> +
> + mtk_hdmi_phy_enable_tmds(hdmi_phy);
> +
> + return 0;
> +}
> +
> +static int mtk_hdmi_phy_power_off(struct phy *phy)
> +{
> + struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
> +
> + mtk_hdmi_phy_disable_tmds(hdmi_phy);
> + clk_disable_unprepare(hdmi_phy->pll);
> +
> + return 0;
> +}
> +
> +static const struct phy_ops mtk_hdmi_phy_dev_ops = {
> + .power_on = mtk_hdmi_phy_power_on,
> + .power_off = mtk_hdmi_phy_power_off,
> + .owner = THIS_MODULE,
> +};
> +
> +struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf = {
> + .tz_enabled = false,
> + .hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops,
> + .hdmi_phy_dev_ops = &mtk_hdmi_phy_dev_ops,
> +};
> +
> +MODULE_AUTHOR("Chunhui Dai <chunhui.dai@xxxxxxxxxxxx>");
> +MODULE_DESCRIPTION("MediaTek HDMI PHY Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> index 51cb9cfb6646..1a35fdd405d8 100644
> --- a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> +++ b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c
> @@ -21,6 +21,7 @@
> #include <linux/phy/phy.h>
> #include <linux/platform_device.h>
> #include <linux/types.h>
> +#include "mtk_hdmi.h"
>
> #define HDMI_CON0 0x00
> #define RG_HDMITX_PLL_EN BIT(31)
> @@ -123,20 +124,6 @@
> #define RGS_HDMITX_5T1_EDG (0xf << 4)
> #define RGS_HDMITX_PLUG_TST BIT(0)
>
> -struct mtk_hdmi_phy {
> - void __iomem *regs;
> - struct device *dev;
> - struct clk *pll;
> - struct clk_hw pll_hw;
> - unsigned long pll_rate;
> - u8 drv_imp_clk;
> - u8 drv_imp_d2;
> - u8 drv_imp_d1;
> - u8 drv_imp_d0;
> - u32 ibias;
> - u32 ibias_up;
> -};
> -
> static const u8 PREDIV[3][4] = {
> {0x0, 0x0, 0x0, 0x0}, /* 27Mhz */
> {0x1, 0x1, 0x1, 0x1}, /* 74Mhz */
> @@ -367,7 +354,7 @@ static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
> return hdmi_phy->pll_rate;
> }
>
> -static const struct clk_ops mtk_hdmi_pll_ops = {
> +static const struct clk_ops mtk_hdmi_phy_pll_ops = {
> .prepare = mtk_hdmi_pll_prepare,
> .unprepare = mtk_hdmi_pll_unprepare,
> .set_rate = mtk_hdmi_pll_set_rate,
> @@ -414,118 +401,16 @@ static int mtk_hdmi_phy_power_off(struct phy *phy)
> return 0;
> }
>
> -static const struct phy_ops mtk_hdmi_phy_ops = {
> +static const struct phy_ops mtk_hdmi_phy_dev_ops = {
> .power_on = mtk_hdmi_phy_power_on,
> .power_off = mtk_hdmi_phy_power_off,
> .owner = THIS_MODULE,
> };
>
> -static int mtk_hdmi_phy_probe(struct platform_device *pdev)
> -{
> - struct device *dev = &pdev->dev;
> - struct mtk_hdmi_phy *hdmi_phy;
> - struct resource *mem;
> - struct clk *ref_clk;
> - const char *ref_clk_name;
> - struct clk_init_data clk_init = {
> - .ops = &mtk_hdmi_pll_ops,
> - .num_parents = 1,
> - .parent_names = (const char * const *)&ref_clk_name,
> - .flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE,
> - };
> - struct phy *phy;
> - struct phy_provider *phy_provider;
> - int ret;
> -
> - hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL);
> - if (!hdmi_phy)
> - return -ENOMEM;
> -
> - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - hdmi_phy->regs = devm_ioremap_resource(dev, mem);
> - if (IS_ERR(hdmi_phy->regs)) {
> - ret = PTR_ERR(hdmi_phy->regs);
> - dev_err(dev, "Failed to get memory resource: %d\n", ret);
> - return ret;
> - }
> -
> - ref_clk = devm_clk_get(dev, "pll_ref");
> - if (IS_ERR(ref_clk)) {
> - ret = PTR_ERR(ref_clk);
> - dev_err(&pdev->dev, "Failed to get PLL reference clock: %d\n",
> - ret);
> - return ret;
> - }
> - ref_clk_name = __clk_get_name(ref_clk);
> -
> - ret = of_property_read_string(dev->of_node, "clock-output-names",
> - &clk_init.name);
> - if (ret < 0) {
> - dev_err(dev, "Failed to read clock-output-names: %d\n", ret);
> - return ret;
> - }
> -
> - hdmi_phy->pll_hw.init = &clk_init;
> - hdmi_phy->pll = devm_clk_register(dev, &hdmi_phy->pll_hw);
> - if (IS_ERR(hdmi_phy->pll)) {
> - ret = PTR_ERR(hdmi_phy->pll);
> - dev_err(dev, "Failed to register PLL: %d\n", ret);
> - return ret;
> - }
> -
> - ret = of_property_read_u32(dev->of_node, "mediatek,ibias",
> - &hdmi_phy->ibias);
> - if (ret < 0) {
> - dev_err(&pdev->dev, "Failed to get ibias: %d\n", ret);
> - return ret;
> - }
> -
> - ret = of_property_read_u32(dev->of_node, "mediatek,ibias_up",
> - &hdmi_phy->ibias_up);
> - if (ret < 0) {
> - dev_err(&pdev->dev, "Failed to get ibias up: %d\n", ret);
> - return ret;
> - }
> -
> - dev_info(dev, "Using default TX DRV impedance: 4.2k/36\n");
> - hdmi_phy->drv_imp_clk = 0x30;
> - hdmi_phy->drv_imp_d2 = 0x30;
> - hdmi_phy->drv_imp_d1 = 0x30;
> - hdmi_phy->drv_imp_d0 = 0x30;
> -
> - phy = devm_phy_create(dev, NULL, &mtk_hdmi_phy_ops);
> - if (IS_ERR(phy)) {
> - dev_err(dev, "Failed to create HDMI PHY\n");
> - return PTR_ERR(phy);
> - }
> - phy_set_drvdata(phy, hdmi_phy);
> -
> - phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> - if (IS_ERR(phy_provider))
> - return PTR_ERR(phy_provider);
> -
> - hdmi_phy->dev = dev;
> - return of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
> - hdmi_phy->pll);
> -}
> -
> -static int mtk_hdmi_phy_remove(struct platform_device *pdev)
> -{
> - return 0;
> -}
> -
> -static const struct of_device_id mtk_hdmi_phy_match[] = {
> - { .compatible = "mediatek,mt8173-hdmi-phy", },
> - {},
> -};
> -
> -struct platform_driver mtk_hdmi_phy_driver = {
> - .probe = mtk_hdmi_phy_probe,
> - .remove = mtk_hdmi_phy_remove,
> - .driver = {
> - .name = "mediatek-hdmi-phy",
> - .of_match_table = mtk_hdmi_phy_match,
> - },
> +struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf = {
> + .tz_enabled = true,
> + .hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops,
> + .hdmi_phy_dev_ops = &mtk_hdmi_phy_dev_ops,
> };
>
> MODULE_AUTHOR("Jie Qiu <jie.qiu@xxxxxxxxxxxx>");