修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/gpu/drm/gma500/mdfld_dsi_output.c
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@@ -25,15 +25,18 @@
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  * Jackie Li<yaodong.li@intel.com>
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  */
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-#include <linux/module.h>
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-
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-#include "mdfld_dsi_output.h"
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-#include "mdfld_dsi_dpi.h"
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-#include "mdfld_output.h"
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-#include "mdfld_dsi_pkg_sender.h"
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-#include "tc35876x-dsi-lvds.h"
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+#include <linux/delay.h>
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+#include <linux/moduleparam.h>
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 #include <linux/pm_runtime.h>
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+#include <linux/gpio/consumer.h>
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+
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 #include <asm/intel_scu_ipc.h>
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+
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+#include "mdfld_dsi_dpi.h"
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+#include "mdfld_dsi_output.h"
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+#include "mdfld_dsi_pkg_sender.h"
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+#include "mdfld_output.h"
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+#include "tc35876x-dsi-lvds.h"
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40
 
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 /* get the LABC from command line. */
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 static int LABC_control = 1;
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@@ -364,7 +367,7 @@
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 	/**
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 	 * FIXME: current DC has no fitting unit, reject any mode setting
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 	 * request
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-	 * Will figure out a way to do up-scaling(pannel fitting) later.
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+	 * Will figure out a way to do up-scaling(panel fitting) later.
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 	 **/
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 	if (fixed_mode) {
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 		if (mode->hdisplay != fixed_mode->hdisplay)
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@@ -430,42 +433,42 @@
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 	return 0;
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 }
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-int mdfld_dsi_panel_reset(int pipe)
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+int mdfld_dsi_panel_reset(struct drm_device *ddev, int pipe)
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 {
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-	unsigned gpio;
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-	int ret = 0;
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+	struct device *dev = ddev->dev;
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+	struct gpio_desc *gpiod;
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+	/*
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+	 * Raise the GPIO reset line for the corresponding pipe to HIGH,
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+	 * this is probably because it is active low so this takes the
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+	 * respective pipe out of reset. (We have no code to put it back
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+	 * into reset in this driver.)
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+	 */
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 	switch (pipe) {
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 	case 0:
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-		gpio = 128;
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+		gpiod = gpiod_get(dev, "dsi-pipe0-reset", GPIOD_OUT_HIGH);
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+		if (IS_ERR(gpiod))
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+			return PTR_ERR(gpiod);
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 		break;
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 	case 2:
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-		gpio = 34;
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+		gpiod = gpiod_get(dev, "dsi-pipe2-reset", GPIOD_OUT_HIGH);
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+		if (IS_ERR(gpiod))
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+			return PTR_ERR(gpiod);
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 		break;
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 	default:
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-		DRM_ERROR("Invalid output\n");
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+		DRM_DEV_ERROR(dev, "Invalid output pipe\n");
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 		return -EINVAL;
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 	}
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+	gpiod_put(gpiod);
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463
 
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-	ret = gpio_request(gpio, "gfx");
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-	if (ret) {
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-		DRM_ERROR("gpio_rqueset failed\n");
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-		return ret;
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-	}
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+	/* Flush posted writes on the device */
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+	gpiod = gpiod_get(dev, "dsi-pipe0-reset", GPIOD_ASIS);
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+	if (IS_ERR(gpiod))
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+		return PTR_ERR(gpiod);
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+	gpiod_get_value(gpiod);
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+	gpiod_put(gpiod);
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-	ret = gpio_direction_output(gpio, 1);
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-	if (ret) {
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-		DRM_ERROR("gpio_direction_output failed\n");
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-		goto gpio_error;
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-	}
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-
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-	gpio_get_value(128);
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-
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-gpio_error:
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-	if (gpio_is_valid(gpio))
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-		gpio_free(gpio);
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-
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-	return ret;
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+	return 0;
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 }
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 /*
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@@ -496,7 +499,7 @@
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 		return;
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 	}
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-	/*create a new connetor*/
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+	/*create a new connector*/
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 	dsi_connector = kzalloc(sizeof(struct mdfld_dsi_connector), GFP_KERNEL);
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 	if (!dsi_connector) {
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 		DRM_ERROR("No memory");
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@@ -529,7 +532,7 @@
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 	dsi_config->connector = dsi_connector;
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 	if (!dsi_config->fixed_mode) {
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-		DRM_ERROR("No pannel fixed mode was found\n");
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+		DRM_ERROR("No panel fixed mode was found\n");
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 		goto dsi_init_err0;
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 	}
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