add-use-pcf50633-resume-callback-jbt6k74.patch

Adds the resume callback stuff to glamo, then changes
jbt6k74 to no longer use a sleeping workqueue, but to
make its resume actions dependent on pcf50633 and
glamo resume (for backlight and communication to LCM
respectively)

Signed-off-by: Andy Green <andy@openmoko.com>

1 files changed, 37 insertions, 2 deletions

diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
index d7882ea5a14..9ba1036494d 100644
--- a/arch/arm/mach-s3c2440/mach-gta02.c
+++ b/arch/arm/mach-s3c2440/mach-gta02.c
@@ -88,6 +88,12 @@
 /* arbitrates which sensor IRQ owns the shared SPI bus */
 static spinlock_t motion_irq_lock;
 
+/* the dependency of jbt / LCM on pcf50633 resume */
+struct resume_dependency resume_dep_jbt_pcf;
+/* the dependency of jbt / LCM on glamo resume */
+struct resume_dependency resume_dep_jbt_glamo;
+
+
 /* define FIQ IPC struct */
 /*
  * contains stuff FIQ ISR modifies and normal kernel code can see and use
@@ -857,21 +863,50 @@ static struct s3c2410_ts_mach_info gta02_ts_cfg = {
 
 /* SPI: LCM control interface attached to Glamo3362 */
 
-void gta02_jbt6k74_reset(int devidx, int level)
+static void gta02_jbt6k74_reset(int devidx, int level)
 {
 	glamo_lcm_reset(level);
 }
 
 /* finally bring up deferred backlight resume now LCM is resumed itself */
 
-void gta02_jbt6k74_resuming(int devidx)
+static void gta02_jbt6k74_resuming(int devidx)
 {
 	pcf50633_backlight_resume(pcf50633_global);
 }
 
+static int gta02_jbt6k74_all_dependencies_resumed(int devidx)
+{
+	if (!resume_dep_jbt_pcf.called_flag)
+		return 0;
+
+	if (!resume_dep_jbt_glamo.called_flag)
+		return 0;
+
+	return 1;
+}
+
+/* register jbt resume action to be dependent on pcf50633 and glamo resume */
+
+static void gta02_jbt6k74_suspending(int devindex, struct spi_device *spi)
+{
+	void jbt6k74_resume(void *spi); /* little white lies about types */
+
+	resume_dep_jbt_pcf.callback = jbt6k74_resume;
+	resume_dep_jbt_pcf.context = (void *)spi;
+	pcf50633_register_resume_dependency(pcf50633_global,
+							   &resume_dep_jbt_pcf);
+	resume_dep_jbt_glamo.callback = jbt6k74_resume;
+	resume_dep_jbt_glamo.context = (void *)spi;
+	glamo_register_resume_dependency(&resume_dep_jbt_glamo);
+}
+
+
 const struct jbt6k74_platform_data jbt6k74_pdata = {
 	.reset		= gta02_jbt6k74_reset,
 	.resuming	= gta02_jbt6k74_resuming,
+	.suspending	= gta02_jbt6k74_suspending,
+	.all_dependencies_resumed = gta02_jbt6k74_all_dependencies_resumed,
 };
 
 static struct spi_board_info gta02_spi_board_info[] = {