OMAPDSS: DPI: Remove cpu_is_xxxx checks

The OMAP3 checks have been removed and replaced by a dss feature
FEAT_DPI_USES_VDDS_DSI for cleaner implementation. The patches
"OMAP: DSS2: enable VDDS_DSI when using DPI" (8a2cfea8cc) by Tomi Valkeinen
<tomi.valkeinen@nokia.com> and "ARM: omap: fix oops in
drivers/video/omap2/dss/dpi.c" (4041071571) by Russell King
<rmk+kernel@arm.linux.org.uk> had introduced these checks. As it is evident
from these patches a dependency exists for some DSS pins on VDDS_DSI which is
better shown by dss feature FEAT_DPI_USES_VDDS_DSI.

Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

3 files changed, 9 insertions, 5 deletions

diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index f260343e245..25fb8953b80 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -34,6 +34,7 @@
 #include <plat/cpu.h>
 
 #include "dss.h"
+#include "dss_features.h"
 
 static struct {
         struct regulator *vdds_dsi_reg;
@@ -175,7 +176,7 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
 
         mutex_lock(&dpi.lock);
 
-        if (cpu_is_omap34xx() && !dpi.vdds_dsi_reg) {
+        if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && !dpi.vdds_dsi_reg) {
                 DSSERR("no VDSS_DSI regulator\n");
                 r = -ENODEV;
                 goto err_no_reg;
@@ -193,7 +194,7 @@ int omapdss_dpi_display_enable(struct omap_dss_device *dssdev)
                 goto err_start_dev;
         }
 
-        if (cpu_is_omap34xx()) {
+        if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI)) {
                 r = regulator_enable(dpi.vdds_dsi_reg);
                 if (r)
                         goto err_reg_enable;
@@ -239,7 +240,7 @@ err_dsi_pll_init:
 err_get_dsi:
         dispc_runtime_put();
 err_get_dispc:
-        if (cpu_is_omap34xx())
+        if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
                 regulator_disable(dpi.vdds_dsi_reg);
 err_reg_enable:
         omap_dss_stop_device(dssdev);
@@ -265,7 +266,7 @@ void omapdss_dpi_display_disable(struct omap_dss_device *dssdev)
 
         dispc_runtime_put();
 
-        if (cpu_is_omap34xx())
+        if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI))
                 regulator_disable(dpi.vdds_dsi_reg);
 
         omap_dss_stop_device(dssdev);
@@ -362,7 +363,8 @@ static int __init dpi_init_display(struct omap_dss_device *dssdev)
 {
         DSSDBG("init_display\n");
 
-        if (cpu_is_omap34xx() && dpi.vdds_dsi_reg == NULL) {
+        if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) &&
+                                        dpi.vdds_dsi_reg == NULL) {
                 struct regulator *vdds_dsi;
 
                 vdds_dsi = dss_get_vdds_dsi();
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index 938709724f0..2fe39d65502 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -373,6 +373,7 @@ static const enum dss_feat_id omap3430_dss_feat_list[] = {
         FEAT_ALPHA_FIXED_ZORDER,
         FEAT_FIFO_MERGE,
         FEAT_OMAP3_DSI_FIFO_BUG,
+        FEAT_DPI_USES_VDDS_DSI,
 };
 
 static const enum dss_feat_id omap3630_dss_feat_list[] = {
diff --git a/drivers/video/omap2/dss/dss_features.h b/drivers/video/omap2/dss/dss_features.h
index 996ffcbfed5..26d43a4b981 100644
--- a/drivers/video/omap2/dss/dss_features.h
+++ b/drivers/video/omap2/dss/dss_features.h
@@ -50,6 +50,7 @@ enum dss_feat_id {
         FEAT_DSI_VC_OCP_WIDTH,
         FEAT_DSI_REVERSE_TXCLKESC,
         FEAT_DSI_GNQ,
+        FEAT_DPI_USES_VDDS_DSI,
         FEAT_HDMI_CTS_SWMODE,
         FEAT_HDMI_AUDIO_USE_MCLK,
         FEAT_HANDLE_UV_SEPARATE,