From: Senthilvadivu Guruswamy <svadivu@xxxxxx>
Looks up the hwmod database for each of the given DSS HW IP and builds
omap_device which inturn does the platform device register for each of DSS HW IP
Signed-off-by: Senthilvadivu Guruswamy <svadivu@xxxxxx>
Signed-off-by: Sumit Semwal <sumit.semwal@xxxxxx>
---
arch/arm/mach-omap2/display.c | 44 +++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/display.h | 6 ++++
2 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/display.c b/arch/arm/mach-omap2/display.c
index 26d3feb..276b800 100644
--- a/arch/arm/mach-omap2/display.c
+++ b/arch/arm/mach-omap2/display.c
@@ -36,10 +36,54 @@ static struct platform_device omap_display_device = {
},
};
+static struct omap_device_pm_latency omap_dss_latency[] = {
+ [0] = {
+ .deactivate_func = omap_device_idle_hwmods,
+ .activate_func = omap_device_enable_hwmods,
+ },
+};
+
int __init omap_display_init(struct omap_dss_board_info
*board_data)
{
int r = 0;
+ struct omap_hwmod *oh;
+ struct omap_device *od;
+ int i;
+ struct omap_display_platform_data pdata;
+ char *oh_name[] = { "dss_dss", /* omap2,3 */
+ "dss_dispc", /* omap2,3 */
+ "dss_rfbi", /* omap2,3 */
+ "dss_venc", /* omap2,3 */
+ "dss_dsi1" }; /* omap3 */
+ char *dev_name[] = { "omap_dss", "omap_dispc", "omap_rfbi",
+ "omap_venc", "omap_dsi1" };
+ int oh_count;
+
+ if (cpu_is_omap24xx()) {
+ oh_count = ARRAY_SIZE(oh_name) - 1;
+ /* last hwmod dev in oh_name is not available for omap2 */
+ } else {
+ oh_count = ARRAY_SIZE(oh_name);
+ }
+
+ pdata.board_data = board_data;
+ pdata.board_data->get_last_off_on_transaction_id = NULL;
+
+ for (i = 0; i < oh_count; i++) {
+ oh = omap_hwmod_lookup(oh_name[i]);
+ if (!oh) {
+ pr_err("Could not look up %s\n", oh_name[i]);
+ return r;
+ }
+ od = omap_device_build(dev_name[i], -1, oh, &pdata,
+ sizeof(struct omap_display_platform_data),
+ omap_dss_latency,
+ ARRAY_SIZE(omap_dss_latency), 0);
+
+ WARN((IS_ERR(od)), "Could not build omap_device for %s\n",
+ oh_name[i]);
+ }
omap_display_device.dev.platform_data = board_data;
r = platform_device_register(&omap_display_device);
diff --git a/arch/arm/plat-omap/include/plat/display.h b/arch/arm/plat-omap/include/plat/display.h
index 871bbae..23afd6d 100644
--- a/arch/arm/plat-omap/include/plat/display.h
+++ b/arch/arm/plat-omap/include/plat/display.h
@@ -26,6 +26,7 @@
#include <linux/platform_device.h>
#include <asm/atomic.h>
+
#define DISPC_IRQ_FRAMEDONE (1 << 0)
#define DISPC_IRQ_VSYNC (1 << 1)
#define DISPC_IRQ_EVSYNC_EVEN (1 << 2)
@@ -224,6 +225,11 @@ struct omap_dss_board_info {
/* Init with the board info */
extern int omap_display_init(struct omap_dss_board_info *board_data);
+struct omap_display_platform_data {
+ struct omap_dss_board_info *board_data;
+ /* TODO: Additional members to be added when PM is considered */
+};
+
struct omap_video_timings {
/* Unit: pixels */
u16 x_res;
--
1.7.0.4
--
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