From: Mythri P K <mythripk@xxxxxx>
Change the timing match logic, Instead of the statically mapped method
to get the corresponding timings for a given code and mode, move to a
simpler array indexed method. It will help to scale up to add more
timings when needed.
Signed-off-by: Mythri P K <mythripk@xxxxxx>
---
drivers/video/omap2/dss/hdmi.c | 162 ++++++++++++++++-----------------------
1 files changed, 67 insertions(+), 95 deletions(-)
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index f76ae47..b859350 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -58,8 +58,6 @@
#define EDID_SIZE_BLOCK0_TIMING_DESCRIPTOR 4
#define EDID_SIZE_BLOCK1_TIMING_DESCRIPTOR 4
-#define OMAP_HDMI_TIMINGS_NB 34
-
#define HDMI_DEFAULT_REGN 16
#define HDMI_DEFAULT_REGM2 1
@@ -88,7 +86,7 @@ static struct {
* map it to corresponding CEA or VESA index.
*/
-static const struct hdmi_config cea_vesa_timings[OMAP_HDMI_TIMINGS_NB] = {
+static const struct hdmi_config cea_timings[] = {
{ {640, 480, 25200, 96, 16, 48, 2, 10, 33, 0, 0, 0}, {1, HDMI_HDMI} },
{ {720, 480, 27027, 62, 16, 60, 6, 9, 30, 0, 0, 0}, {2, HDMI_HDMI} },
{ {1280, 720, 74250, 40, 110, 220, 5, 5, 20, 1, 1, 0}, {4, HDMI_HDMI} },
@@ -104,6 +102,8 @@ static const struct hdmi_config cea_vesa_timings[OMAP_HDMI_TIMINGS_NB] = {
{ {1920, 1080, 74250, 44, 638, 148, 5, 4, 36, 1, 1, 0}, {32, HDMI_HDMI} },
{ {2880, 480, 108108, 248, 64, 240, 6, 9, 30, 0, 0, 0}, {35, HDMI_HDMI} },
{ {2880, 576, 108000, 256, 48, 272, 5, 5, 39, 0, 0, 0}, {37, HDMI_HDMI} },
+};
+static const struct hdmi_config vesa_timings[] = {
/* VESA From Here */
{ {640, 480, 25175, 96, 16, 48, 2 , 11, 31, 0, 0, 0}, {4, HDMI_DVI} },
{ {800, 600, 40000, 128, 40, 88, 4 , 1, 23, 1, 1, 0}, {9, HDMI_DVI} },
@@ -126,39 +126,6 @@ static const struct hdmi_config cea_vesa_timings[OMAP_HDMI_TIMINGS_NB] = {
{ {1280, 720, 74250, 40, 110, 220, 5, 5, 20, 1, 1, 0}, {0x55, HDMI_DVI} }
};
-/*
- * This is a static mapping array which maps the timing values
- * with corresponding CEA / VESA code
- */
-static const int code_index[OMAP_HDMI_TIMINGS_NB] = {
- 1, 19, 4, 2, 37, 6, 21, 20, 5, 16, 17, 29, 31, 35, 32,
- /* <--15 CEA 17--> vesa*/
- 4, 9, 0xE, 0x17, 0x1C, 0x27, 0x20, 0x23, 0x10, 0x2A,
- 0X2F, 0x3A, 0X51, 0X52, 0x16, 0x29, 0x39, 0x1B
-};
-
-/*
- * This is reverse static mapping which maps the CEA / VESA code
- * to the corresponding timing values
- */
-static const int code_cea[39] = {
- -1, 0, 3, 3, 2, 8, 5, 5, -1, -1,
- -1, -1, -1, -1, -1, -1, 9, 10, 10, 1,
- 7, 6, 6, -1, -1, -1, -1, -1, -1, 11,
- 11, 12, 14, -1, -1, 13, 13, 4, 4
-};
-
-static const int code_vesa[85] = {
- -1, -1, -1, -1, 15, -1, -1, -1, -1, 16,
- -1, -1, -1, -1, 17, -1, 23, -1, -1, -1,
- -1, -1, 29, 18, -1, -1, -1, 32, 19, -1,
- -1, -1, 21, -1, -1, 22, -1, -1, -1, 20,
- -1, 30, 24, -1, -1, -1, -1, 25, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, 31, 26, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- -1, 27, 28, -1, 33};
-
static int hdmi_runtime_get(void)
{
int r;
@@ -188,82 +155,88 @@ int hdmi_init_display(struct omap_dss_device *dssdev)
return 0;
}
-static int get_timings_index(void)
+static bool hdmi_find_code(const struct hdmi_config *timings_arr,
+ int len, struct hdmi_config *timing)
{
- int code;
+ int i;
- if (hdmi.mode == 0)
- code = code_vesa[hdmi.code];
- else
- code = code_cea[hdmi.code];
+ for (i = 0; i < len; i++) {
+ if (timings_arr[i].cm.code == hdmi.code) {
+ *timing = timings_arr[i];
+ return true;
+ }
+ }
+
+ return false;
+}
- if (code == -1) {
+static void hdmi_get_timings(struct hdmi_config *timing)
+{
+ int r;
+
+ if (hdmi.mode == 0) {
+ r = hdmi_find_code(vesa_timings,
+ ARRAY_SIZE(vesa_timings), timing);
+ } else {
+ r = hdmi_find_code(cea_timings,
+ ARRAY_SIZE(cea_timings), timing);
+ }
+ if (!r) {
/* HDMI code 4 corresponds to 640 * 480 VGA */
hdmi.code = 4;
/* DVI mode 1 corresponds to HDMI 0 to DVI */
hdmi.mode = HDMI_DVI;
+ *timing = vesa_timings[0];
+ }
+}
+
+static bool hdmi_timings_compare(struct omap_video_timings *timing,
+ const struct hdmi_video_timings *temp)
+{
+ int timing_vsync, timing_hsync, temp_vsync, temp_hsync;
+
+ if ((temp->pixel_clock == timing->pixel_clock) &&
+ (temp->x_res == timing->x_res) &&
+ (temp->y_res == timing->y_res)) {
- code = code_vesa[hdmi.code];
+ temp_hsync = temp->hfp + temp->hsw + temp->hbp;
+ timing_hsync = timing->hfp + timing->hsw + timing->hbp;
+ temp_vsync = temp->vfp + temp->vsw + temp->vbp;
+ timing_vsync = timing->vfp + timing->vsw + timing->vbp;
+
+ DSSDBG("temp_hsync = %d temp_vsync = %d timing_hsync = %d"\
+ "timing_vsync = %d\n", temp_hsync, temp_hsync,
+ timing_hsync, timing_vsync);
+
+ if ((temp_hsync == timing_hsync) &&
+ (temp_vsync == timing_vsync)) {
+ return true;
+ }
}
- return code;
+ return false;
}
static struct hdmi_cm hdmi_get_code(struct omap_video_timings *timing)
{
- int i = 0, code = -1, temp_vsync = 0, temp_hsync = 0;
- int timing_vsync = 0, timing_hsync = 0;
- struct hdmi_video_timings temp;
+ int i;
struct hdmi_cm cm = {-1};
DSSDBG("hdmi_get_code\n");
- for (i = 0; i < OMAP_HDMI_TIMINGS_NB; i++) {
- temp = cea_vesa_timings[i].timings;
- if ((temp.pixel_clock == timing->pixel_clock) &&
- (temp.x_res == timing->x_res) &&
- (temp.y_res == timing->y_res)) {
-
- temp_hsync = temp.hfp + temp.hsw + temp.hbp;
- timing_hsync = timing->hfp + timing->hsw + timing->hbp;
- temp_vsync = temp.vfp + temp.vsw + temp.vbp;
- timing_vsync = timing->vfp + timing->vsw + timing->vbp;
-
- DSSDBG("temp_hsync = %d , temp_vsync = %d"
- "timing_hsync = %d, timing_vsync = %d\n",
- temp_hsync, temp_hsync,
- timing_hsync, timing_vsync);
-
- if ((temp_hsync == timing_hsync) &&
- (temp_vsync == timing_vsync)) {
- code = i;
- cm.code = code_index[i];
- if (code < 14)
- cm.mode = HDMI_HDMI;
- else
- cm.mode = HDMI_DVI;
- DSSDBG("Hdmi_code = %d mode = %d\n",
- cm.code, cm.mode);
- break;
- }
+ for (i = 0; i < ARRAY_SIZE(cea_timings); i++) {
+ if (hdmi_timings_compare(timing, &cea_timings[i].timings)) {
+ cm = cea_timings[i].cm;
+ goto end;
+ }
+ }
+ for (i = 0; i < ARRAY_SIZE(vesa_timings); i++) {
+ if (hdmi_timings_compare(timing, &vesa_timings[i].timings)) {
+ cm = vesa_timings[i].cm;
+ goto end;
}
}
- return cm;
-}
+end: return cm;
-static void update_hdmi_timings(struct hdmi_config *cfg,
- struct omap_video_timings *timings, int code)
-{
- cfg->timings.x_res = timings->x_res;
- cfg->timings.y_res = timings->y_res;
- cfg->timings.hbp = timings->hbp;
- cfg->timings.hfp = timings->hfp;
- cfg->timings.hsw = timings->hsw;
- cfg->timings.vbp = timings->vbp;
- cfg->timings.vfp = timings->vfp;
- cfg->timings.vsw = timings->vsw;
- cfg->timings.pixel_clock = timings->pixel_clock;
- cfg->timings.vsync_pol = cea_vesa_timings[code].timings.vsync_pol;
- cfg->timings.hsync_pol = cea_vesa_timings[code].timings.hsync_pol;
}
unsigned long hdmi_get_pixel_clock(void)
@@ -325,7 +298,7 @@ static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy,
static int hdmi_power_on(struct omap_dss_device *dssdev)
{
- int r, code = 0;
+ int r;
struct omap_video_timings *p;
unsigned long phy;
@@ -341,8 +314,7 @@ static int hdmi_power_on(struct omap_dss_device *dssdev)
dssdev->panel.timings.x_res,
dssdev->panel.timings.y_res);
- code = get_timings_index();
- update_hdmi_timings(&hdmi.ip_data.cfg, p, code);
+ hdmi_get_timings(&hdmi.ip_data.cfg);
phy = p->pixel_clock;
--
1.7.5.4
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