From af478d8823a707958b518a73573eca65c9ff2a91 Mon Sep 17 00:00:00 2001 From: Ajay Kumar Date: Tue, 20 Jan 2015 22:08:49 +0530 Subject: [PATCH] drm/bridge: ptn3460: use gpiod interface Modify driver to support gpiod interface. Signed-off-by: Ajay Kumar Acked-by: Inki Dae Tested-by: Rahul Sharma Tested-by: Javier Martinez Canillas Tested-by: Gustavo Padovan Tested-by: Sjoerd Simons Signed-off-by: Thierry Reding --- drivers/gpu/drm/bridge/ptn3460.c | 88 +++++++++++++------------------- 1 file changed, 36 insertions(+), 52 deletions(-) diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c index 9f800a1ab385..826833e396f0 100644 --- a/drivers/gpu/drm/bridge/ptn3460.c +++ b/drivers/gpu/drm/bridge/ptn3460.c @@ -42,8 +42,8 @@ struct ptn3460_bridge { struct drm_bridge bridge; struct edid *edid; struct drm_panel *panel; - int gpio_pd_n; - int gpio_rst_n; + struct gpio_desc *gpio_pd_n; + struct gpio_desc *gpio_rst_n; u32 edid_emulation; bool enabled; }; @@ -132,14 +132,11 @@ static void ptn3460_pre_enable(struct drm_bridge *bridge) if (ptn_bridge->enabled) return; - if (gpio_is_valid(ptn_bridge->gpio_pd_n)) - gpio_set_value(ptn_bridge->gpio_pd_n, 1); + gpiod_set_value(ptn_bridge->gpio_pd_n, 1); - if (gpio_is_valid(ptn_bridge->gpio_rst_n)) { - gpio_set_value(ptn_bridge->gpio_rst_n, 0); - usleep_range(10, 20); - gpio_set_value(ptn_bridge->gpio_rst_n, 1); - } + gpiod_set_value(ptn_bridge->gpio_rst_n, 0); + usleep_range(10, 20); + gpiod_set_value(ptn_bridge->gpio_rst_n, 1); if (drm_panel_prepare(ptn_bridge->panel)) { DRM_ERROR("failed to prepare panel\n"); @@ -184,11 +181,8 @@ static void ptn3460_disable(struct drm_bridge *bridge) return; } - if (gpio_is_valid(ptn_bridge->gpio_rst_n)) - gpio_set_value(ptn_bridge->gpio_rst_n, 1); - - if (gpio_is_valid(ptn_bridge->gpio_pd_n)) - gpio_set_value(ptn_bridge->gpio_pd_n, 0); + gpiod_set_value(ptn_bridge->gpio_rst_n, 1); + gpiod_set_value(ptn_bridge->gpio_pd_n, 0); } static void ptn3460_post_disable(struct drm_bridge *bridge) @@ -335,39 +329,41 @@ static int ptn3460_probe(struct i2c_client *client, } ptn_bridge->client = client; - ptn_bridge->gpio_pd_n = of_get_named_gpio(dev->of_node, - "powerdown-gpio", 0); - if (gpio_is_valid(ptn_bridge->gpio_pd_n)) { - ret = gpio_request_one(ptn_bridge->gpio_pd_n, - GPIOF_OUT_INIT_HIGH, "PTN3460_PD_N"); - if (ret) { - dev_err(dev, "Request powerdown-gpio failed (%d)\n", - ret); - return ret; - } + + ptn_bridge->gpio_pd_n = devm_gpiod_get(&client->dev, "powerdown"); + if (IS_ERR(ptn_bridge->gpio_pd_n)) { + ret = PTR_ERR(ptn_bridge->gpio_pd_n); + dev_err(dev, "cannot get gpio_pd_n %d\n", ret); + return ret; } - ptn_bridge->gpio_rst_n = of_get_named_gpio(dev->of_node, - "reset-gpio", 0); - if (gpio_is_valid(ptn_bridge->gpio_rst_n)) { - /* - * Request the reset pin low to avoid the bridge being - * initialized prematurely - */ - ret = gpio_request_one(ptn_bridge->gpio_rst_n, - GPIOF_OUT_INIT_LOW, "PTN3460_RST_N"); - if (ret) { - dev_err(dev, "Request reset-gpio failed (%d)\n", ret); - gpio_free(ptn_bridge->gpio_pd_n); - return ret; - } + ret = gpiod_direction_output(ptn_bridge->gpio_pd_n, 1); + if (ret) { + DRM_ERROR("cannot configure gpio_pd_n\n"); + return ret; + } + + ptn_bridge->gpio_rst_n = devm_gpiod_get(&client->dev, "reset"); + if (IS_ERR(ptn_bridge->gpio_rst_n)) { + ret = PTR_ERR(ptn_bridge->gpio_rst_n); + DRM_ERROR("cannot get gpio_rst_n %d\n", ret); + return ret; + } + /* + * Request the reset pin low to avoid the bridge being + * initialized prematurely + */ + ret = gpiod_direction_output(ptn_bridge->gpio_rst_n, 0); + if (ret) { + DRM_ERROR("cannot configure gpio_rst_n\n"); + return ret; } ret = of_property_read_u32(dev->of_node, "edid-emulation", &ptn_bridge->edid_emulation); if (ret) { dev_err(dev, "Can't read EDID emulation value\n"); - goto err; + return ret; } ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs; @@ -375,19 +371,12 @@ static int ptn3460_probe(struct i2c_client *client, ret = drm_bridge_add(&ptn_bridge->bridge); if (ret) { DRM_ERROR("Failed to add bridge\n"); - goto err; + return ret; } i2c_set_clientdata(client, ptn_bridge); return 0; - -err: - if (gpio_is_valid(ptn_bridge->gpio_pd_n)) - gpio_free(ptn_bridge->gpio_pd_n); - if (gpio_is_valid(ptn_bridge->gpio_rst_n)) - gpio_free(ptn_bridge->gpio_rst_n); - return ret; } static int ptn3460_remove(struct i2c_client *client) @@ -396,11 +385,6 @@ static int ptn3460_remove(struct i2c_client *client) drm_bridge_remove(&ptn_bridge->bridge); - if (gpio_is_valid(ptn_bridge->gpio_pd_n)) - gpio_free(ptn_bridge->gpio_pd_n); - if (gpio_is_valid(ptn_bridge->gpio_rst_n)) - gpio_free(ptn_bridge->gpio_rst_n); - return 0; } -- 2.30.2