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>
---
arch/arm/mach-omap2/devices.c | 46 +++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/display.h | 10 ++++++
2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 0702b87..7a75310 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -29,6 +29,8 @@
#include <plat/mmc.h>
#include <plat/dma.h>
#include <plat/display.h>
+#include <plat/omap_device.h>
+#include <plat/omap_hwmod.h>
#include "mux.h"
@@ -896,9 +898,53 @@ 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,
+ },
+};
+
void __init omap_display_init(struct omap_dss_board_info
*board_data)
{
+ struct omap_hwmod *oh;
+ struct omap_device *od;
+ int l, i;
+ struct omap_display_platform_data pdata;
+ char *oh_name[] = {
+ "dss_dss",
+ "dss_dispc",
+ "dss_dsi1",
+ "dss_rfbi",
+ "dss_venc"
+ };
+
+ for (i = 0; i < ARRAY_SIZE(oh_name); i++) {
+ l = snprintf(oh_name[i], MAX_OMAP_DSS_HWMOD_NAME_LEN,
+ oh_name[i]);
+ WARN(l >= MAX_OMAP_DSS_HWMOD_NAME_LEN,
+ "String buffer overflow in DSS device setup\n");
+
+ oh = omap_hwmod_lookup(oh_name[i]);
+ if (!oh) {
+ pr_err("Could not look up %s\n", oh_name[i]);
+ return ;
+ }
+ strncpy(pdata.name, oh_name[i], sizeof(oh_name[i]));
+ pdata.board_data = board_data;
+ pdata.board_data->get_last_off_on_transaction_id = NULL;
+ pdata.device_enable = omap_device_enable;
+ pdata.device_idle = omap_device_idle;
+ pdata.device_shutdown = omap_device_shutdown;
+ od = omap_device_build(oh_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;
diff --git a/arch/arm/plat-omap/include/plat/display.h b/arch/arm/plat-omap/include/plat/display.h
index 4b71be3..84a63de 100644
--- a/arch/arm/plat-omap/include/plat/display.h
+++ b/arch/arm/plat-omap/include/plat/display.h
@@ -26,6 +26,8 @@
#include <linux/platform_device.h>
#include <asm/atomic.h>
+#define MAX_OMAP_DSS_HWMOD_NAME_LEN 16
+
#define DISPC_IRQ_FRAMEDONE (1 << 0)
#define DISPC_IRQ_VSYNC (1 << 1)
#define DISPC_IRQ_EVSYNC_EVEN (1 << 2)
@@ -255,6 +257,14 @@ struct omap_dss_board_info {
/* Init with the board info */
extern void omap_display_init(struct omap_dss_board_info *board_data);
+struct omap_display_platform_data {
+ char name[MAX_OMAP_DSS_HWMOD_NAME_LEN];
+ struct omap_dss_board_info *board_data;
+ int (*device_enable)(struct platform_device *pdev);
+ int (*device_shutdown)(struct platform_device *pdev);
+ int (*device_idle)(struct platform_device *pdev);
+};
+
struct omap_video_timings {
/* Unit: pixels */
u16 x_res;
--
1.6.3.3
--
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