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-rw-r--r--drivers/video/omap2/dss/dispc.c14
-rw-r--r--drivers/video/omap2/dss/dss_features.c3
-rw-r--r--drivers/video/omap2/dss/dss_features.h1
3 files changed, 14 insertions, 4 deletions
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 7a9a2e7d968..fbf3edfa11b 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -2433,7 +2433,7 @@ static void dispc_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
u16 pck_div)
{
BUG_ON(lck_div < 1);
- BUG_ON(pck_div < 2);
+ BUG_ON(pck_div < 1);
enable_clocks(1);
dispc_write_reg(DISPC_DIVISORo(channel),
@@ -2903,11 +2903,17 @@ void dispc_set_pol_freq(enum omap_channel channel,
void dispc_find_clk_divs(bool is_tft, unsigned long req_pck, unsigned long fck,
struct dispc_clock_info *cinfo)
{
- u16 pcd_min = is_tft ? 2 : 3;
+ u16 pcd_min, pcd_max;
unsigned long best_pck;
u16 best_ld, cur_ld;
u16 best_pd, cur_pd;
+ pcd_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD);
+ pcd_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD);
+
+ if (!is_tft)
+ pcd_min = 3;
+
best_pck = 0;
best_ld = 0;
best_pd = 0;
@@ -2915,7 +2921,7 @@ void dispc_find_clk_divs(bool is_tft, unsigned long req_pck, unsigned long fck,
for (cur_ld = 1; cur_ld <= 255; ++cur_ld) {
unsigned long lck = fck / cur_ld;
- for (cur_pd = pcd_min; cur_pd <= 255; ++cur_pd) {
+ for (cur_pd = pcd_min; cur_pd <= pcd_max; ++cur_pd) {
unsigned long pck = lck / cur_pd;
long old_delta = abs(best_pck - req_pck);
long new_delta = abs(pck - req_pck);
@@ -2950,7 +2956,7 @@ int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
{
if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
return -EINVAL;
- if (cinfo->pck_div < 2 || cinfo->pck_div > 255)
+ if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
return -EINVAL;
cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index 1c18888e5df..77c6f4717e0 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -230,6 +230,7 @@ static const char * const omap4_dss_clk_source_names[] = {
static const struct dss_param_range omap2_dss_param_range[] = {
[FEAT_PARAM_DSS_FCK] = { 0, 173000000 },
+ [FEAT_PARAM_DSS_PCD] = { 2, 255 },
[FEAT_PARAM_DSIPLL_REGN] = { 0, 0 },
[FEAT_PARAM_DSIPLL_REGM] = { 0, 0 },
[FEAT_PARAM_DSIPLL_REGM_DISPC] = { 0, 0 },
@@ -240,6 +241,7 @@ static const struct dss_param_range omap2_dss_param_range[] = {
static const struct dss_param_range omap3_dss_param_range[] = {
[FEAT_PARAM_DSS_FCK] = { 0, 173000000 },
+ [FEAT_PARAM_DSS_PCD] = { 1, 255 },
[FEAT_PARAM_DSIPLL_REGN] = { 0, (1 << 7) - 1 },
[FEAT_PARAM_DSIPLL_REGM] = { 0, (1 << 11) - 1 },
[FEAT_PARAM_DSIPLL_REGM_DISPC] = { 0, (1 << 4) - 1 },
@@ -250,6 +252,7 @@ static const struct dss_param_range omap3_dss_param_range[] = {
static const struct dss_param_range omap4_dss_param_range[] = {
[FEAT_PARAM_DSS_FCK] = { 0, 186000000 },
+ [FEAT_PARAM_DSS_PCD] = { 1, 255 },
[FEAT_PARAM_DSIPLL_REGN] = { 0, (1 << 8) - 1 },
[FEAT_PARAM_DSIPLL_REGM] = { 0, (1 << 12) - 1 },
[FEAT_PARAM_DSIPLL_REGM_DISPC] = { 0, (1 << 5) - 1 },
diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h
index 07b346f7d91..da7215f949a 100644
--- a/drivers/video/omap2/dss/dss_features.h
+++ b/drivers/video/omap2/dss/dss_features.h
@@ -71,6 +71,7 @@ enum dss_feat_reg_field {
enum dss_range_param {
FEAT_PARAM_DSS_FCK,
+ FEAT_PARAM_DSS_PCD,
FEAT_PARAM_DSIPLL_REGN,
FEAT_PARAM_DSIPLL_REGM,
FEAT_PARAM_DSIPLL_REGM_DISPC,