From 5b038dcf9d0aa0b1e8f2a8f973441b4f66d325f2 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Mon, 10 Jun 2019 01:13:39 +0200 Subject: [PATCH] drm/bridge: analogix_dp: Convert to GPIO descriptors This converts the Analogix display port to use GPIO descriptors instead of DT-extracted numbers. Cc: Douglas Anderson Cc: Sean Paul Cc: Marek Szyprowski Cc: Enric Balletbo i Serra Signed-off-by: Linus Walleij Reviewed-by: Enric Balletbo i Serra Tested-by: Marek Szyprowski Reviewed-by: Andrzej Hajda Signed-off-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/20190609231339.22136-1-linus.walleij@linaro.org --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 28 ++++++++++------------ drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 4 +++- drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 14 +++++------ 3 files changed, 23 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index e7f9231b5ad4..8a57ecfc8fb4 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -13,13 +13,12 @@ #include #include #include -#include +#include #include #include #include #include #include -#include #include #include @@ -1583,12 +1582,18 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, dp->force_hpd = of_property_read_bool(dev->of_node, "force-hpd"); - dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0); - if (!gpio_is_valid(dp->hpd_gpio)) - dp->hpd_gpio = of_get_named_gpio(dev->of_node, - "samsung,hpd-gpio", 0); + /* Try two different names */ + dp->hpd_gpiod = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN); + if (!dp->hpd_gpiod) + dp->hpd_gpiod = devm_gpiod_get_optional(dev, "samsung,hpd", + GPIOD_IN); + if (IS_ERR(dp->hpd_gpiod)) { + dev_err(dev, "error getting HDP GPIO: %ld\n", + PTR_ERR(dp->hpd_gpiod)); + return ERR_CAST(dp->hpd_gpiod); + } - if (gpio_is_valid(dp->hpd_gpio)) { + if (dp->hpd_gpiod) { /* * Set up the hotplug GPIO from the device tree as an interrupt. * Simply specifying a different interrupt in the device tree @@ -1596,16 +1601,9 @@ analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, * using a GPIO. We also need the actual GPIO specifier so * that we can get the current state of the GPIO. */ - ret = devm_gpio_request_one(&pdev->dev, dp->hpd_gpio, GPIOF_IN, - "hpd_gpio"); - if (ret) { - dev_err(&pdev->dev, "failed to get hpd gpio\n"); - return ERR_PTR(ret); - } - dp->irq = gpio_to_irq(dp->hpd_gpio); + dp->irq = gpiod_to_irq(dp->hpd_gpiod); irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING; } else { - dp->hpd_gpio = -ENODEV; dp->irq = platform_get_irq(pdev, 0); irq_flags = 0; } diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h index 3e5fe90edf71..e483f5cecd55 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h @@ -38,6 +38,8 @@ #define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0) #define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3) +struct gpio_desc; + enum link_lane_count_type { LANE_COUNT1 = 1, LANE_COUNT2 = 2, @@ -171,7 +173,7 @@ struct analogix_dp_device { struct link_train link_train; struct phy *phy; int dpms_mode; - int hpd_gpio; + struct gpio_desc *hpd_gpiod; bool force_hpd; bool psr_enable; bool fast_train_enable; diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c index cf17e2e21b15..b1d6c33585e7 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -12,7 +12,7 @@ #include #include -#include +#include #include #include @@ -397,7 +397,7 @@ void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp) { u32 reg; - if (gpio_is_valid(dp->hpd_gpio)) + if (dp->hpd_gpiod) return; reg = HOTPLUG_CHG | HPD_LOST | PLUG; @@ -411,7 +411,7 @@ void analogix_dp_init_hpd(struct analogix_dp_device *dp) { u32 reg; - if (gpio_is_valid(dp->hpd_gpio)) + if (dp->hpd_gpiod) return; analogix_dp_clear_hotplug_interrupts(dp); @@ -434,8 +434,8 @@ enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp) { u32 reg; - if (gpio_is_valid(dp->hpd_gpio)) { - reg = gpio_get_value(dp->hpd_gpio); + if (dp->hpd_gpiod) { + reg = gpiod_get_value(dp->hpd_gpiod); if (reg) return DP_IRQ_TYPE_HP_CABLE_IN; else @@ -507,8 +507,8 @@ int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp) { u32 reg; - if (gpio_is_valid(dp->hpd_gpio)) { - if (gpio_get_value(dp->hpd_gpio)) + if (dp->hpd_gpiod) { + if (gpiod_get_value(dp->hpd_gpiod)) return 0; } else { reg = readl(dp->reg_base + ANALOGIX_DP_SYS_CTL_3); -- 2.11.0