From 1543e317f1da31b75942316931e8f491a8920811 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 04 Jan 2024 10:08:02 +0000
Subject: [PATCH] disable FB
---
kernel/drivers/gpu/drm/gma500/mdfld_dsi_output.c | 71 ++++++++++++++++++-----------------
1 files changed, 37 insertions(+), 34 deletions(-)
diff --git a/kernel/drivers/gpu/drm/gma500/mdfld_dsi_output.c b/kernel/drivers/gpu/drm/gma500/mdfld_dsi_output.c
index fe02092..4aab766 100644
--- a/kernel/drivers/gpu/drm/gma500/mdfld_dsi_output.c
+++ b/kernel/drivers/gpu/drm/gma500/mdfld_dsi_output.c
@@ -25,15 +25,18 @@
* Jackie Li<yaodong.li@intel.com>
*/
-#include <linux/module.h>
-
-#include "mdfld_dsi_output.h"
-#include "mdfld_dsi_dpi.h"
-#include "mdfld_output.h"
-#include "mdfld_dsi_pkg_sender.h"
-#include "tc35876x-dsi-lvds.h"
+#include <linux/delay.h>
+#include <linux/moduleparam.h>
#include <linux/pm_runtime.h>
+#include <linux/gpio/consumer.h>
+
#include <asm/intel_scu_ipc.h>
+
+#include "mdfld_dsi_dpi.h"
+#include "mdfld_dsi_output.h"
+#include "mdfld_dsi_pkg_sender.h"
+#include "mdfld_output.h"
+#include "tc35876x-dsi-lvds.h"
/* get the LABC from command line. */
static int LABC_control = 1;
@@ -364,7 +367,7 @@
/**
* FIXME: current DC has no fitting unit, reject any mode setting
* request
- * Will figure out a way to do up-scaling(pannel fitting) later.
+ * Will figure out a way to do up-scaling(panel fitting) later.
**/
if (fixed_mode) {
if (mode->hdisplay != fixed_mode->hdisplay)
@@ -430,42 +433,42 @@
return 0;
}
-int mdfld_dsi_panel_reset(int pipe)
+int mdfld_dsi_panel_reset(struct drm_device *ddev, int pipe)
{
- unsigned gpio;
- int ret = 0;
+ struct device *dev = ddev->dev;
+ struct gpio_desc *gpiod;
+ /*
+ * Raise the GPIO reset line for the corresponding pipe to HIGH,
+ * this is probably because it is active low so this takes the
+ * respective pipe out of reset. (We have no code to put it back
+ * into reset in this driver.)
+ */
switch (pipe) {
case 0:
- gpio = 128;
+ gpiod = gpiod_get(dev, "dsi-pipe0-reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
break;
case 2:
- gpio = 34;
+ gpiod = gpiod_get(dev, "dsi-pipe2-reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
break;
default:
- DRM_ERROR("Invalid output\n");
+ DRM_DEV_ERROR(dev, "Invalid output pipe\n");
return -EINVAL;
}
+ gpiod_put(gpiod);
- ret = gpio_request(gpio, "gfx");
- if (ret) {
- DRM_ERROR("gpio_rqueset failed\n");
- return ret;
- }
+ /* Flush posted writes on the device */
+ gpiod = gpiod_get(dev, "dsi-pipe0-reset", GPIOD_ASIS);
+ if (IS_ERR(gpiod))
+ return PTR_ERR(gpiod);
+ gpiod_get_value(gpiod);
+ gpiod_put(gpiod);
- ret = gpio_direction_output(gpio, 1);
- if (ret) {
- DRM_ERROR("gpio_direction_output failed\n");
- goto gpio_error;
- }
-
- gpio_get_value(128);
-
-gpio_error:
- if (gpio_is_valid(gpio))
- gpio_free(gpio);
-
- return ret;
+ return 0;
}
/*
@@ -496,7 +499,7 @@
return;
}
- /*create a new connetor*/
+ /*create a new connector*/
dsi_connector = kzalloc(sizeof(struct mdfld_dsi_connector), GFP_KERNEL);
if (!dsi_connector) {
DRM_ERROR("No memory");
@@ -529,7 +532,7 @@
dsi_config->connector = dsi_connector;
if (!dsi_config->fixed_mode) {
- DRM_ERROR("No pannel fixed mode was found\n");
+ DRM_ERROR("No panel fixed mode was found\n");
goto dsi_init_err0;
}
--
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