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Groups > linux.kernel > #1210141
| From | Kishon Vijay Abraham I <kishon@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v3 08/14] phy: Add driver for rockchip Display Port PHY |
| Date | 2015-08-20 06:50 +0200 |
| Message-ID | <pZpXA-2zc-1@gated-at.bofh.it> (permalink) |
| References | <pZcQF-qk-19@gated-at.bofh.it> <pZd0m-BY-23@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi,
On Wednesday 19 August 2015 08:21 PM, Yakir Yang wrote:
> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
where's the commit message?
> ---
> Changes in v3:
> - Take Heiko suggest, add rockchip dp phy driver,
> collect the phy clocks and power control.
>
> Changes in v2: None
>
> .../devicetree/bindings/phy/rockchip-dp-phy.txt | 26 +++
> drivers/phy/Kconfig | 7 +
> drivers/phy/Makefile | 1 +
> drivers/phy/phy-rockchip-dp.c | 185 +++++++++++++++++++++
> 4 files changed, 219 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/rockchip-dp-phy.txt
> create mode 100644 drivers/phy/phy-rockchip-dp.c
>
> diff --git a/Documentation/devicetree/bindings/phy/rockchip-dp-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-dp-phy.txt
> new file mode 100644
> index 0000000..5de1088
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/rockchip-dp-phy.txt
> @@ -0,0 +1,26 @@
> +Rockchip Soc Seroes Display Port PHY
> +------------------------------------
> +
> +Required properties:
> +- compatible : should be one of the following supported values:
> + - "rockchip.rk3288-dp-phy"
> +
> +- reg : a list of registers used by phy driver
> +- clocks: from common clock binding: handle to dp clock.
> + of memory mapped region.
> +- clock-names: from common clock binding:
> + Required elements: "sclk_dp" "sclk_dp_24m"
> +
> +- rockchip,grf: this soc should set GRF regs, so need get grf here.
> +- #phy-cells : from the generic PHY bindings, must be 0;
> +
> +Example:
> +
> +edp_phy: phy@ff770274 {
> + compatilble = "rockchip,rk3288-dp-phy";
> + reg = <0xff770274 4>;
> + rockchip,grf = <&grf>;
> + clocks = <&cru SCLK_EDP_24M>;
> + clock-names = "24m";
> + #phy-cells = <0>;
> +}
> diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
> index 6b8dd16..da00440 100644
> --- a/drivers/phy/Kconfig
> +++ b/drivers/phy/Kconfig
> @@ -297,6 +297,13 @@ config PHY_ROCKCHIP_USB
> help
> Enable this to support the Rockchip USB 2.0 PHY.
>
> +config PHY_ROCKCHIP_DP
> + tristate "Rockchip Display Port PHY Driver"
> + depends on ARCH_ROCKCHIP && OF
> + select GENERIC_PHY
> + help
> + Enable this to support the Rockchip Display Port PHY.
> +
> config PHY_ST_SPEAR1310_MIPHY
> tristate "ST SPEAR1310-MIPHY driver"
> select GENERIC_PHY
> diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
> index f344e1b..35e3ce6 100644
> --- a/drivers/phy/Makefile
> +++ b/drivers/phy/Makefile
> @@ -33,6 +33,7 @@ phy-exynos-usb2-$(CONFIG_PHY_S5PV210_USB2) += phy-s5pv210-usb2.o
> obj-$(CONFIG_PHY_EXYNOS5_USBDRD) += phy-exynos5-usbdrd.o
> obj-$(CONFIG_PHY_QCOM_APQ8064_SATA) += phy-qcom-apq8064-sata.o
> obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o
> +obj-$(CONFIG_PHY_ROCKCHIP_DP) += phy-rockchip-dp.o
> obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o
> obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o
> obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o
> diff --git a/drivers/phy/phy-rockchip-dp.c b/drivers/phy/phy-rockchip-dp.c
> new file mode 100644
> index 0000000..4759111
> --- /dev/null
> +++ b/drivers/phy/phy-rockchip-dp.c
> @@ -0,0 +1,185 @@
> +/*
> + * Rockchip DP PHY driver
> + *
> + * Copyright (C) 2015 FuZhou Rockchip Co., Ltd.
> + * Author: Yakir Yang <ykk@@rock-chips.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License.
> + */
> +
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/clk.h>
> +#include <linux/phy/phy.h>
> +#include <linux/regmap.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/platform_device.h>
> +
> +#define GRF_SOC_CON12 0x0274
> +#define GRF_EDP_REF_CLK_SEL_INTER BIT(4)
> +
> +#define DP_PHY_SIDDQ_WRITE_EN BIT(21)
> +#define DP_PHY_SIDDQ_ON 0
> +#define DP_PHY_SIDDQ_OFF BIT(5)
> +
> +struct rockchip_dp_phy {
> + struct device *dev;
> + struct regmap *grf;
> + void __iomem *regs;
> + struct clk *phy_24m;
> +};
> +
> +static int rockchip_dp_phy_clk_enable(struct rockchip_dp_phy *dp)
> +{
> + int ret = 0;
> +
> + ret = clk_set_rate(dp->phy_24m, 24000000);
> + if (ret < 0) {
> + dev_err(dp->dev, "cannot set clock phy_24m %d\n", ret);
> + return ret;
> + }
> +
> + ret = clk_prepare_enable(dp->phy_24m);
> + if (ret < 0) {
> + dev_err(dp->dev, "cannot enable clock phy_24m %d\n", ret);
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int rockchip_dp_phy_clk_disable(struct rockchip_dp_phy *dp)
> +{
> + clk_disable_unprepare(dp->phy_24m);
> +
> + return 0;
> +}
> +
> +static int rockchip_set_phy_state(struct phy *phy, bool enable)
> +{
> + struct rockchip_dp_phy *dp = phy_get_drvdata(phy);
> +
> + if (enable) {
> + rockchip_dp_phy_clk_enable(dp);
> + writel(DP_PHY_SIDDQ_WRITE_EN | DP_PHY_SIDDQ_ON, dp->regs);
> + } else {
> + rockchip_dp_phy_clk_disable(dp);
> + writel(DP_PHY_SIDDQ_WRITE_EN | DP_PHY_SIDDQ_OFF, dp->regs);
> + }
> +
> + return 0;
> +}
> +
> +static int rockchip_dp_phy_power_on(struct phy *phy)
> +{
> + return rockchip_set_phy_state(phy, true);
> +}
> +
> +static int rockchip_dp_phy_power_off(struct phy *phy)
> +{
> + return rockchip_set_phy_state(phy, false);
> +}
> +
> +static struct phy_ops rockchip_dp_phy_ops = {
> + .power_on = rockchip_dp_phy_power_on,
> + .power_off = rockchip_dp_phy_power_off,
> + .owner = THIS_MODULE,
> +};
> +
> +static int rockchip_dp_phy_init(struct rockchip_dp_phy *dp)
> +{
> + struct device *dev = dp->dev;
> + struct device_node *np = dev->of_node;
> + int ret;
> +
> + dp->phy_24m = devm_clk_get(dev, "24m");
> + if (IS_ERR(dp->phy_24m)) {
> + dev_err(dev, "cannot get clock 24m\n");
> + return PTR_ERR(dp->phy_24m);
> + }
> +
> + ret = rockchip_dp_phy_clk_enable(dp);
> + if (ret < 0) {
> + dev_err(dp->dev, "cannot enable dp phy clk %d\n", ret);
> + return ret;
> + }
> +
> + dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
> + if (IS_ERR(dp->grf)) {
> + dev_err(dev, "rk3288-dp needs rockchip,grf property\n");
> + return PTR_ERR(dp->grf);
> + }
> +
> + ret = regmap_write(dp->grf, GRF_SOC_CON12,
> + GRF_EDP_REF_CLK_SEL_INTER |
> + (GRF_EDP_REF_CLK_SEL_INTER << 16));
> + if (ret != 0) {
> + dev_err(dp->dev, "Could not config GRF edp ref clk: %d\n", ret);
> + return ret;
> + }
This function can be split to do only clk_get and syscon_regmap_lookup in
probe, clk_enable and regmap_write in phy_init?
> +
> + return 0;
> +}
> +
> +static int rockchip_dp_phy_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct phy_provider *phy_provider;
> + struct rockchip_dp_phy *dp;
> + struct resource *res;
> + struct phy *phy;
> + int ret;
> +
> + dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
> + if (IS_ERR(dp))
> + return -ENOMEM;
> +
> + dp->dev = dev;
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + dp->regs = devm_ioremap_resource(dev, res);
> + if (IS_ERR(dp->regs))
> + return PTR_ERR(dp->regs);
> +
> + ret = rockchip_dp_phy_init(dp);
> + if (ret)
> + return ret;
> +
> + phy = devm_phy_create(dev, NULL, &rockchip_dp_phy_ops, NULL);
> + if (IS_ERR(phy)) {
> + dev_err(dev, "failed to create phy\n");
> + return PTR_ERR(phy);
> + }
> + phy_set_drvdata(phy, dp);
> +
> + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
> +
> + return PTR_ERR_OR_ZERO(phy_provider);
> +}
> +
> +static const struct of_device_id rockchip_dp_phy_dt_ids[] = {
> + { .compatible = "rockchip,rk3288-dp-phy" },
> + {}
> +};
> +
> +MODULE_DEVICE_TABLE(of, rockchip_dp_phy_dt_ids);
> +
> +static struct platform_driver rockchip_dp_phy_driver = {
> + .probe = rockchip_dp_phy_probe,
> + .driver = {
> + .name = "rockchip-dp-phy",
> + .owner = THIS_MODULE,
owner is not required here.
Thanks
Kishon
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[PATCH v3 0/14] Add Analogix Core Display Port Driver Yakir Yang <ykk@rock-chips.com> - 2015-08-19 16:50 +0200
[PATCH v3 07/14] drm: rockchip/dp: add rockchip platform dp driver Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
[PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Rob Herring <robherring2@gmail.com> - 2015-08-24 01:30 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-08-24 02:50 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-24 04:50 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-08-24 06:30 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-24 14:50 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Heiko Stuebner <heiko@sntech.de> - 2015-08-24 15:10 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 03:40 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-08-25 02:00 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-08-25 03:40 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 03:40 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Jingoo Han <jingoohan1@gmail.com> - 2015-08-24 09:50 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-24 15:00 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-24 04:30 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-24 15:00 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Rob Herring <robherring2@gmail.com> - 2015-08-24 16:50 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Heiko Stuebner <heiko@sntech.de> - 2015-08-24 18:20 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 03:30 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Thierry Reding <treding@nvidia.com> - 2015-08-25 11:20 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-25 11:40 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Thierry Reding <treding@nvidia.com> - 2015-08-25 12:50 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-25 13:00 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 11:50 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Thierry Reding <treding@nvidia.com> - 2015-08-25 12:10 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 16:10 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Thierry Reding <treding@nvidia.com> - 2015-08-25 11:20 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 11:40 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Rob Herring <robherring2@gmail.com> - 2015-08-25 15:30 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Thierry Reding <treding@nvidia.com> - 2015-08-25 16:20 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 16:30 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Thierry Reding <treding@nvidia.com> - 2015-08-25 12:00 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Yakir Yang <ykk@rock-chips.com> - 2015-08-25 16:10 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Thierry Reding <treding@nvidia.com> - 2015-08-25 16:30 +0200
Re: [PATCH v3 06/14] Documentation: drm/bridge: add document for analogix_dp Russell King - ARM Linux <linux@arm.linux.org.uk> - 2015-08-25 18:00 +0200
[PATCH v3 14/14] drm: bridge/analogix_dp: add edid modes parse in get_modes method Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
[PATCH v3 08/14] phy: Add driver for rockchip Display Port PHY Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
Re: [PATCH v3 08/14] phy: Add driver for rockchip Display Port PHY Kishon Vijay Abraham I <kishon@ti.com> - 2015-08-20 06:50 +0200
[PATCH v3 11/14] drm: bridge: analogix_dp: try force hpd after plug in lookup failed Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
[PATCH v3 05/14] drm: bridge/analogix_dp: fix link_rate & lane_count bug Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
Re: [PATCH v3 05/14] drm: bridge/analogix_dp: fix link_rate & lane_count bug Jingoo Han <jingoohan1@gmail.com> - 2015-08-20 09:30 +0200
Re: [PATCH v3 05/14] drm: bridge/analogix_dp: fix link_rate & lane_count bug Yakir Yang <ykk@rock-chips.com> - 2015-08-20 10:10 +0200
[PATCH v3 12/14] drm: bridge/analogix_dp: expand the delay time for hpd detect Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
Re: [PATCH v3 12/14] drm: bridge/analogix_dp: expand the delay time for hpd detect Jingoo Han <jingoohan1@gmail.com> - 2015-08-20 08:20 +0200
Re: [PATCH v3 12/14] drm: bridge/analogix_dp: expand the delay time for hpd detect Yakir Yang <ykk@rock-chips.com> - 2015-08-20 10:10 +0200
[PATCH v3 04/14] drm: bridge/analogix_dp: dynamic parse sync_pol & interlace & colorimetry Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
[PATCH v3 02/14] drm: exynos/dp: convert to drm bridge mode Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
[PATCH v3 13/14] drm: bridge/analogix_dp: move hpd detect to connector detect function Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
Re: [PATCH v3 13/14] drm: bridge/analogix_dp: move hpd detect to connector detect function Jingoo Han <jingoohan1@gmail.com> - 2015-08-20 09:50 +0200
Re: [PATCH v3 13/14] drm: bridge/analogix_dp: move hpd detect to connector detect function Yakir Yang <ykk@rock-chips.com> - 2015-08-20 10:20 +0200
[PATCH v3 10/14] drm: bridge: analogix_dp: add some rk3288 special registers setting Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
[PATCH v3 09/14] drm: bridge/analogix_dp: add platform device type support Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
[PATCH v3 01/14] drm: exynos/dp: fix code style Yakir Yang <ykk@rock-chips.com> - 2015-08-19 17:00 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Dave Airlie <airlied@gmail.com> - 2015-08-20 02:00 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Yakir Yang <ykk@rock-chips.com> - 2015-08-20 03:10 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Archit Taneja <architt@codeaurora.org> - 2015-08-20 06:40 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Jingoo Han <jingoohan1@gmail.com> - 2015-08-20 08:00 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Yakir Yang <ykk@rock-chips.com> - 2015-08-20 08:30 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Jingoo Han <jingoohan1@gmail.com> - 2015-08-20 09:00 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Yakir Yang <ykk@rock-chips.com> - 2015-08-20 10:10 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Jingoo Han <jingoohan1@gmail.com> - 2015-08-21 10:30 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Thierry Reding <treding@nvidia.com> - 2015-08-21 15:20 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Romain Perier <romain.perier@gmail.com> - 2015-08-30 14:20 +0200
Re: [PATCH v3 0/14] Add Analogix Core Display Port Driver Yakir Yang <ykk@rock-chips.com> - 2015-08-31 04:50 +0200
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