diff options
author | Felix Fietkau <nbd@openwrt.org> | 2009-03-14 15:52:42 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2009-03-14 15:52:42 +0000 |
commit | 16defbb2bd9478f9e5384b9722f20a694e6bae41 (patch) | |
tree | f52e202c30c7fca103b196ece1223e18446e4dfc /target/linux/s3c24xx/patches-2.6.24/1122-fix-glamofb-cmd-mode-locking.patch.patch | |
parent | b4644aedce6526b5d07b336187c8e6417c7dd75e (diff) | |
download | mtk-20170518-16defbb2bd9478f9e5384b9722f20a694e6bae41.zip mtk-20170518-16defbb2bd9478f9e5384b9722f20a694e6bae41.tar.gz mtk-20170518-16defbb2bd9478f9e5384b9722f20a694e6bae41.tar.bz2 |
nuke obsolete kernel stuff
SVN-Revision: 14875
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1122-fix-glamofb-cmd-mode-locking.patch.patch')
-rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1122-fix-glamofb-cmd-mode-locking.patch.patch | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1122-fix-glamofb-cmd-mode-locking.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1122-fix-glamofb-cmd-mode-locking.patch.patch deleted file mode 100644 index 58eecf3..0000000 --- a/target/linux/s3c24xx/patches-2.6.24/1122-fix-glamofb-cmd-mode-locking.patch.patch +++ /dev/null @@ -1,320 +0,0 @@ -From f2cf4e5f204e981a02a0edaccab4ca39f868ac0f Mon Sep 17 00:00:00 2001 -From: Andy Green <andy@openmoko.com> -Date: Sun, 13 Apr 2008 07:25:56 +0100 -Subject: [PATCH] fix-glamofb-cmd-mode-locking.patch - -Glamo "cmd mode" is modal, but nothing took care about locking. -Also cmd mode was entered recursively in rotate_lcd(). - -Signed-off-by: Andy Green <andy@openmoko.com> ---- - drivers/mfd/glamo/glamo-core.c | 2 +- - drivers/mfd/glamo/glamo-fb.c | 106 +++++++++++++++++++++++++-------------- - include/linux/glamofb.h | 2 +- - 3 files changed, 70 insertions(+), 40 deletions(-) - -diff --git a/drivers/mfd/glamo/glamo-core.c b/drivers/mfd/glamo/glamo-core.c -index accd933..19ca363 100644 ---- a/drivers/mfd/glamo/glamo-core.c -+++ b/drivers/mfd/glamo/glamo-core.c -@@ -588,7 +588,7 @@ int glamo_engine_reclock(struct glamo_core *glamo, - if (val) { - val--; - reg_set_bit_mask(glamo, reg, mask, val); -- msleep(5); /* wait some time to stabilize */ -+ mdelay(5); /* wait some time to stabilize */ - - return 0; - } else { -diff --git a/drivers/mfd/glamo/glamo-fb.c b/drivers/mfd/glamo/glamo-fb.c -index 87c7420..8633e44 100644 ---- a/drivers/mfd/glamo/glamo-fb.c -+++ b/drivers/mfd/glamo/glamo-fb.c -@@ -36,6 +36,7 @@ - #include <linux/wait.h> - #include <linux/platform_device.h> - #include <linux/clk.h> -+#include <linux/spinlock.h> - - #include <asm/io.h> - #include <asm/uaccess.h> -@@ -50,7 +51,7 @@ - #include "glamo-regs.h" - #include "glamo-core.h" - --#ifdef DEBUG -+#ifndef DEBUG - #define GLAMO_LOG(...) - #else - #define GLAMO_LOG(...) \ -@@ -72,6 +73,7 @@ struct glamofb_handle { - struct glamofb_platform_data *mach_info; - char __iomem *cursor_addr; - u_int32_t pseudo_pal[16]; -+ spinlock_t lock_cmd; - }; - - /* 'sibling' spi device for lcm init */ -@@ -237,6 +239,7 @@ static void rotate_lcd(struct glamofb_handle *glamo, - __u32 rotation) - { - int glamo_rot; -+ unsigned long flags; - - switch (rotation) { - case FB_ROTATE_UR: -@@ -255,7 +258,15 @@ static void rotate_lcd(struct glamofb_handle *glamo, - glamo_rot = GLAMO_LCD_ROT_MODE_0; - break; - } -- glamofb_cmd_mode(glamo, 1); -+ -+ /* -+ * ha ha we are only called when we are in cmd mode already -+ * printk(KERN_ERR"rotate_lcd spin_lock_irqsave\n"); -+ * spin_lock_irqsave(&glamo->lock_cmd, flags); -+ * -+ * if (glamofb_cmd_mode(glamo, 1)) -+ * goto out_unlock; -+ */ - reg_set_bit_mask(glamo, - GLAMO_REG_LCD_WIDTH, - GLAMO_LCD_ROT_MODE_MASK, -@@ -265,17 +276,19 @@ static void rotate_lcd(struct glamofb_handle *glamo, - GLAMO_LCD_MODE1_ROTATE_EN, - (glamo_rot != GLAMO_LCD_ROT_MODE_0)? - GLAMO_LCD_MODE1_ROTATE_EN : 0); -- glamofb_cmd_mode(glamo, 0); -+/* glamofb_cmd_mode(glamo, 0); -+ -+out_unlock: -+ printk(KERN_ERR"rotate_lcd spin_unlock_irqrestore\n"); -+ spin_unlock_irqrestore(&glamo->lock_cmd, flags); -+*/ - } - - static enum orientation get_orientation(struct fb_var_screeninfo *var) - { -- GLAMO_LOG("mark\n") -- if (var->xres <= var->yres) { -- GLAMO_LOG("portrait\n") -+ if (var->xres <= var->yres) - return ORIENTATION_PORTRAIT; -- } -- GLAMO_LOG("landscape\n") -+ - return ORIENTATION_LANDSCAPE; - } - -@@ -299,12 +312,18 @@ static void glamofb_update_lcd_controller(struct glamofb_handle *glamo, - struct fb_var_screeninfo *var) - { - int sync, bp, disp, fp, total, xres, yres, pitch, orientation_changing; -+ unsigned long flags; - -- GLAMO_LOG("enter: glamo:%#x, var:%#x\n", (unsigned)glamo, (unsigned)var); -+/* GLAMO_LOG("enter: glamo:%#x, var:%#x\n", (unsigned)glamo, (unsigned)var); -+*/ - if (!glamo || !var) - return; - -- glamofb_cmd_mode(glamo, 1); -+ printk(KERN_ERR"glamofb_update_lcd_controller spin_lock_irqsave\n"); -+ spin_lock_irqsave(&glamo->lock_cmd, flags); -+ -+ if (glamofb_cmd_mode(glamo, 1)) -+ goto out_unlock; - - if (var->pixclock) - glamo_engine_reclock(glamo->mach_info->glamo, -@@ -313,14 +332,14 @@ static void glamofb_update_lcd_controller(struct glamofb_handle *glamo, - - xres = var->xres; - yres = var->yres; -- GLAMO_LOG("xres:%d, yres:%d, rotate:%d\n", xres, yres, var->rotate); -- -+/* GLAMO_LOG("xres:%d, yres:%d, rotate:%d\n", xres, yres, var->rotate); -+*/ - /* - * figure out if orientation is going to change - */ - orientation_changing = will_orientation_change(var); -- GLAMO_LOG("orientation_changing:%d\n", orientation_changing); -- -+/* GLAMO_LOG("orientation_changing:%d\n", orientation_changing); -+*/ - /* - * adjust the pitch according to new orientation to come - */ -@@ -329,8 +348,8 @@ static void glamofb_update_lcd_controller(struct glamofb_handle *glamo, - } else { - pitch = var->xres * var->bits_per_pixel / 8; - } -- GLAMO_LOG("pitch:%d\n", pitch); -- -+/* GLAMO_LOG("pitch:%d\n", pitch); -+*/ - /* - * set the awaiten LCD geometry - */ -@@ -347,7 +366,7 @@ static void glamofb_update_lcd_controller(struct glamofb_handle *glamo, - GLAMO_LCD_PITCH_MASK, - pitch); - -- GLAMO_LOG("mark:\n"); -+/* GLAMO_LOG("mark:\n");*/ - /* - * honour the rotation request - */ -@@ -365,7 +384,8 @@ static void glamofb_update_lcd_controller(struct glamofb_handle *glamo, - var->yres_virtual = var->yres = yres; - } - -- GLAMO_LOG("reported res:(%d,%d)\n", var->xres, var->yres); -+/* GLAMO_LOG("reported res:(%d,%d)\n", var->xres, var->yres); -+*/ - /* - * update scannout timings - */ -@@ -386,8 +406,8 @@ static void glamofb_update_lcd_controller(struct glamofb_handle *glamo, - reg_set_bit_mask(glamo, GLAMO_REG_LCD_HORIZ_DISP_END, - GLAMO_LCD_HV_RETR_DISP_END_MASK, fp); - -- GLAMO_LOG("mark:\n"); -- -+/* GLAMO_LOG("mark:\n"); -+*/ - sync = 0; - bp = sync + var->vsync_len; - disp = bp + var->upper_margin; -@@ -405,10 +425,13 @@ static void glamofb_update_lcd_controller(struct glamofb_handle *glamo, - reg_set_bit_mask(glamo, GLAMO_REG_LCD_VERT_DISP_END, - GLAMO_LCD_HV_RETR_DISP_END_MASK, fp); - -- GLAMO_LOG("mark:\n"); -+/* GLAMO_LOG("mark:\n"); */ - glamofb_cmd_mode(glamo, 0); - -- GLAMO_LOG("leave:\n"); -+/* GLAMO_LOG("leave:\n"); */ -+out_unlock: -+ printk(KERN_ERR"glamofb_update_lcd_controller spin_unlock_irqrestore\n"); -+ spin_unlock_irqrestore(&glamo->lock_cmd, flags); - } - - static int glamofb_set_par(struct fb_info *info) -@@ -552,23 +575,25 @@ static inline int glamofb_cmdq_empty(struct glamofb_handle *gfb) - return reg_read(gfb, GLAMO_REG_LCD_STATUS1) & (1 << 15); - } - --void glamofb_cmd_mode(struct glamofb_handle *gfb, int on) -+/* call holding gfb->lock_cmd when locking, until you unlock */ -+ -+int glamofb_cmd_mode(struct glamofb_handle *gfb, int on) - { -- int timeout = 20000; -+ int timeout = 200000; - -- dev_dbg(gfb->dev, "glamofb_cmd_mode(gfb=%p, on=%d)\n", gfb, on); -+/* dev_dbg(gfb->dev, "glamofb_cmd_mode(gfb=%p, on=%d)\n", gfb, on); */ - if (on) { -- dev_dbg(gfb->dev, "%s: waiting for cmdq empty: ", -- __FUNCTION__); -+/* dev_dbg(gfb->dev, "%s: waiting for cmdq empty: ", -+ __FUNCTION__); */ - while ((!glamofb_cmdq_empty(gfb)) && (timeout--)) - yield(); - if (timeout < 0) { - printk(KERN_ERR"*************" - "glamofb cmd_queue never got empty" - "*************\n"); -- return; -+ return -EIO; - } -- dev_dbg(gfb->dev, "empty!\n"); -+/* dev_dbg(gfb->dev, "empty!\n"); */ - - /* display the entire frame then switch to command */ - reg_write(gfb, GLAMO_REG_LCD_COMMAND1, -@@ -576,8 +601,8 @@ void glamofb_cmd_mode(struct glamofb_handle *gfb, int on) - GLAMO_LCD_CMD_DATA_FIRE_VSYNC); - - /* wait until LCD is idle */ -- dev_dbg(gfb->dev, "waiting for LCD idle: "); -- timeout = 2000; -+/* dev_dbg(gfb->dev, "waiting for LCD idle: "); */ -+ timeout = 200000; - while ((!reg_read(gfb, GLAMO_REG_LCD_STATUS2) & (1 << 12)) && - (timeout--)) - yield(); -@@ -585,11 +610,11 @@ void glamofb_cmd_mode(struct glamofb_handle *gfb, int on) - printk(KERN_ERR"*************" - "glamofb lcd never idle" - "*************\n"); -- return; -+ return -EIO; - } -- dev_dbg(gfb->dev, "idle!\n"); -+/* dev_dbg(gfb->dev, "idle!\n"); */ - -- msleep(90); -+ mdelay(100); - } else { - /* RGB interface needs vsync/hsync */ - if (reg_read(gfb, GLAMO_REG_LCD_MODE3) & GLAMO_LCD_MODE3_RGB) -@@ -601,15 +626,17 @@ void glamofb_cmd_mode(struct glamofb_handle *gfb, int on) - GLAMO_LCD_CMD_TYPE_DISP | - GLAMO_LCD_CMD_DATA_DISP_FIRE); - } -+ -+ return 0; - } - EXPORT_SYMBOL_GPL(glamofb_cmd_mode); - - int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val) - { -- int timeout = 20000; -+ int timeout = 200000; - -- dev_dbg(gfb->dev, "%s: waiting for cmdq empty\n", -- __FUNCTION__); -+/* dev_dbg(gfb->dev, "%s: waiting for cmdq empty\n", -+ __FUNCTION__); */ - while ((!glamofb_cmdq_empty(gfb)) && (timeout--)) - yield(); - if (timeout < 0) { -@@ -618,7 +645,7 @@ int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val) - "*************\n"); - return 1; - } -- dev_dbg(gfb->dev, "idle, writing 0x%04x\n", val); -+/* dev_dbg(gfb->dev, "idle, writing 0x%04x\n", val); */ - - reg_write(gfb, GLAMO_REG_LCD_COMMAND1, val); - -@@ -758,6 +785,9 @@ static int __init glamofb_probe(struct platform_device *pdev) - - glamo_engine_enable(mach_info->glamo, GLAMO_ENGINE_LCD); - glamo_engine_reset(mach_info->glamo, GLAMO_ENGINE_LCD); -+ -+ printk(KERN_ERR"spin_lock_init\n"); -+ spin_lock_init(&glamofb->lock_cmd); - glamofb_init_regs(glamofb); - - rc = register_framebuffer(fbinfo); -diff --git a/include/linux/glamofb.h b/include/linux/glamofb.h -index 75eefef..51bf593 100644 ---- a/include/linux/glamofb.h -+++ b/include/linux/glamofb.h -@@ -33,7 +33,7 @@ struct glamofb_platform_data { - int (*glamo_irq_is_wired)(void); - }; - --void glamofb_cmd_mode(struct glamofb_handle *gfb, int on); -+int glamofb_cmd_mode(struct glamofb_handle *gfb, int on); - int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val); - void glamo_lcm_reset(int level); - --- -1.5.6.5 - |