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-rw-r--r--recipes/linux/linux-openmoko-2.6.32/0014-Clean-up-JBT-hooks-and-allow-resolution-switching.patch223
1 files changed, 223 insertions, 0 deletions
diff --git a/recipes/linux/linux-openmoko-2.6.32/0014-Clean-up-JBT-hooks-and-allow-resolution-switching.patch b/recipes/linux/linux-openmoko-2.6.32/0014-Clean-up-JBT-hooks-and-allow-resolution-switching.patch
new file mode 100644
index 0000000000..287214b677
--- /dev/null
+++ b/recipes/linux/linux-openmoko-2.6.32/0014-Clean-up-JBT-hooks-and-allow-resolution-switching.patch
@@ -0,0 +1,223 @@
+From 644aab63501ebff3e819fd25d23c63da6b6e1cf5 Mon Sep 17 00:00:00 2001
+From: Thomas White <taw@bitwiz.org.uk>
+Date: Mon, 8 Mar 2010 23:51:09 +0100
+Subject: [PATCH 14/15] Clean up JBT hooks, and allow resolution switching
+
+Signed-off-by: Thomas White <taw@bitwiz.org.uk>
+---
+ arch/arm/mach-s3c2442/mach-gta02.c | 2 +-
+ drivers/mfd/glamo/glamo-display.c | 17 ++++++----
+ drivers/video/backlight/jbt6k74.c | 57 +++++++++++++++++++----------------
+ include/linux/jbt6k74.h | 14 +++++++++
+ 4 files changed, 56 insertions(+), 34 deletions(-)
+
+diff --git a/arch/arm/mach-s3c2442/mach-gta02.c b/arch/arm/mach-s3c2442/mach-gta02.c
+index a969037..b580b1b 100644
+--- a/arch/arm/mach-s3c2442/mach-gta02.c
++++ b/arch/arm/mach-s3c2442/mach-gta02.c
+@@ -229,7 +229,7 @@ static struct fb_videomode gta02_glamo_modes[] = {
+ .name = "240x320",
+ .xres = 240,
+ .yres = 320,
+- .pixclock = 40816,
++ .pixclock = 100000,
+ .left_margin = 8,
+ .right_margin = 16,
+ .upper_margin = 2,
+diff --git a/drivers/mfd/glamo/glamo-display.c b/drivers/mfd/glamo/glamo-display.c
+index 5f04697..e56cdb4 100644
+--- a/drivers/mfd/glamo/glamo-display.c
++++ b/drivers/mfd/glamo/glamo-display.c
+@@ -52,19 +52,18 @@
+ *
+ */
+
+-#define DEBUG 1
+-
+ #include <drm/drmP.h>
+ #include <drm/glamo_drm.h>
+ #include <drm/drm_crtc_helper.h>
+ #include <drm/drm_crtc.h>
++#include <linux/glamofb.h>
++#include <linux/jbt6k74.h>
+
+ #include "glamo-core.h"
+ #include "glamo-drm-private.h"
+ #include "glamo-regs.h"
+ #include "glamo-kms-fb.h"
+ #include "glamo-display.h"
+-#include <linux/glamofb.h>
+
+
+ #define GLAMO_LCD_WIDTH_MASK 0x03FF
+@@ -356,6 +355,12 @@ static int glamo_crtc_mode_set(struct drm_crtc *crtc,
+
+ glamo_lcd_cmd_mode(gdrm, 0);
+
++ if ( mode->hdisplay == 240 ) {
++ jbt6k74_setresolution(JBT_RESOLUTION_QVGA);
++ } else {
++ jbt6k74_setresolution(JBT_RESOLUTION_VGA);
++ }
++
+ glamo_crtc_mode_set_base(crtc, 0, 0, old_fb);
+
+ gcrtc->current_mode = *mode;
+@@ -366,8 +371,6 @@ static int glamo_crtc_mode_set(struct drm_crtc *crtc,
+ }
+
+
+-extern void jbt6k74_action(int val);
+-
+ /* This is not the right place to switch power on/off, because the helper
+ * stuff ends up calling this before/after setting the mode. We can't
+ * set modes with the display off (although backlight off would be OK) */
+@@ -385,14 +388,14 @@ void glamo_lcd_power(struct glamodrm_handle *gdrm, int mode)
+ if ( mode ) {
+ glamo_engine_enable(gdrm->glamo_core, GLAMO_ENGINE_LCD);
+ gcrtc->pixel_clock_on = 1;
+- jbt6k74_action(1);
++ jbt6k74_setpower(JBT_POWER_MODE_NORMAL);
+ if ( gcrtc->current_mode_set ) {
+ glamo_crtc_mode_set(crtc, &gcrtc->current_mode,
+ &gcrtc->current_mode, 0, 0,
+ gcrtc->current_fb);
+ }
+ } else {
+- jbt6k74_action(0);
++ jbt6k74_setpower(JBT_POWER_MODE_OFF);
+ glamo_engine_suspend(gdrm->glamo_core, GLAMO_ENGINE_LCD);
+ gcrtc->pixel_clock_on = 0;
+ }
+diff --git a/drivers/video/backlight/jbt6k74.c b/drivers/video/backlight/jbt6k74.c
+index 9554cb3..40c31f6 100644
+--- a/drivers/video/backlight/jbt6k74.c
++++ b/drivers/video/backlight/jbt6k74.c
+@@ -101,15 +101,6 @@ enum jbt_register {
+ JBT_REG_HCLOCK_QVGA = 0xed,
+ };
+
+-enum jbt_resolution {
+- JBT_RESOLUTION_VGA,
+- JBT_RESOLUTION_QVGA,
+-};
+-
+-enum jbt_power_mode {
+- JBT_POWER_MODE_OFF,
+- JBT_POWER_MODE_NORMAL,
+-};
+
+ static const char *jbt_power_mode_names[] = {
+ [JBT_POWER_MODE_OFF] = "off",
+@@ -121,6 +112,7 @@ static const char *jbt_resolution_names[] = {
+ [JBT_RESOLUTION_QVGA] = "qvga",
+ };
+
++
+ struct jbt_info {
+ struct mutex lock; /* protects this structure */
+ enum jbt_resolution resolution;
+@@ -139,6 +131,8 @@ struct jbt_info {
+ uint16_t reg_cache[0xEE];
+ };
+
++struct jbt_info *jbt_global;
++
+ #define JBT_COMMAND 0x000
+ #define JBT_DATA 0x100
+
+@@ -401,8 +395,9 @@ static int jbt6k74_set_resolution(struct jbt_info *jbt,
+
+ if (jbt->power_mode == JBT_POWER_MODE_NORMAL) {
+
+- /* first transition into sleep */
++ /* "Reboot" the LCM */
+ ret = jbt_normal_to_off(jbt);
++ mdelay(1000);
+ ret |= jbt_off_to_normal(jbt);
+
+ if (ret) {
+@@ -609,22 +604,6 @@ static int jbt6k74_get_power(struct lcd_device *ld)
+ }
+ }
+
+-/* This is utterly, totally horrible. I'm REALLY sorry... */
+-struct jbt_info *jbt_global;
+-void jbt6k74_action(int val)
+-{
+- if ( !jbt_global ) {
+- printk(KERN_CRIT "JBT not initialised!!!\n");
+- return;
+- }
+- if ( val == 0 ) {
+- jbt6k74_enter_power_mode(jbt_global, JBT_POWER_MODE_OFF);
+- } else {
+- jbt6k74_enter_power_mode(jbt_global, JBT_POWER_MODE_NORMAL);
+- }
+-}
+-EXPORT_SYMBOL_GPL(jbt6k74_action);
+-
+ struct lcd_ops jbt6k74_lcd_ops = {
+ .set_power = jbt6k74_set_power,
+ .get_power = jbt6k74_get_power,
+@@ -758,6 +737,32 @@ static int __devexit jbt_remove(struct spi_device *spi)
+ return 0;
+ }
+
++/* Begin horrible layering violations (in the interest of making stuff work) */
++
++int jbt6k74_setresolution(enum jbt_resolution new_resolution)
++{
++ if ( !jbt_global ) {
++ printk(KERN_CRIT "JBT not initialised!!!\n");
++ return -1;
++ }
++ jbt6k74_set_resolution(jbt_global, new_resolution);
++ return 0;
++}
++EXPORT_SYMBOL_GPL(jbt6k74_setresolution);
++
++/* This is utterly, totally horrible. I'm REALLY sorry... */
++void jbt6k74_setpower(enum jbt_power_mode new_power)
++{
++ if ( !jbt_global ) {
++ printk(KERN_CRIT "JBT not initialised!!!\n");
++ return;
++ }
++ jbt6k74_enter_power_mode(jbt_global, new_power);
++}
++EXPORT_SYMBOL_GPL(jbt6k74_setpower);
++
++/* End horrible layering violations */
++
+ #ifdef CONFIG_PM
+ static int jbt_suspend(struct spi_device *spi, pm_message_t state)
+ {
+diff --git a/include/linux/jbt6k74.h b/include/linux/jbt6k74.h
+index 4cf760c..f430e5a 100644
+--- a/include/linux/jbt6k74.h
++++ b/include/linux/jbt6k74.h
+@@ -3,6 +3,20 @@
+
+ #include <linux/spi/spi.h>
+
++enum jbt_resolution {
++ JBT_RESOLUTION_VGA,
++ JBT_RESOLUTION_QVGA,
++};
++
++enum jbt_power_mode {
++ JBT_POWER_MODE_OFF,
++ JBT_POWER_MODE_NORMAL,
++};
++
++extern void jbt6k74_setpower(enum jbt_power_mode new_power);
++extern int jbt6k74_setresolution(enum jbt_resolution new_resolution);
++
++
+ /*
+ * struct jbt6k74_platform_data - Platform data for jbt6k74 driver
+ * @probe_completed: Callback to be called when the driver has been
+--
+1.7.0.2
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-23 20:59:38 +0000