drm/exynos: add has_vtsel flag

The exynos fimd provides video type selection bits from system register
but exynos3 series don't has it, so needs has_vtsel flag and we can
distinguish whether set video type selection bits.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 7593f62..0673a39 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -96,6 +96,7 @@ struct fimd_driver_data {
        unsigned int has_clksel:1;
        unsigned int has_limited_fmt:1;
        unsigned int has_vidoutcon:1;
+       unsigned int has_vtsel:1;
 };
 
 static struct fimd_driver_data s3c64xx_fimd_driver_data = {
@@ -118,6 +119,7 @@ static struct fimd_driver_data exynos4_fimd_driver_data = {
        .lcdblk_vt_shift = 10,
        .lcdblk_bypass_shift = 1,
        .has_shadowcon = 1,
+       .has_vtsel = 1,
 };
 
 static struct fimd_driver_data exynos4415_fimd_driver_data = {
@@ -127,6 +129,7 @@ static struct fimd_driver_data exynos4415_fimd_driver_data = {
        .lcdblk_bypass_shift = 1,
        .has_shadowcon = 1,
        .has_vidoutcon = 1,
+       .has_vtsel = 1,
 };
 
 static struct fimd_driver_data exynos5_fimd_driver_data = {
@@ -136,6 +139,7 @@ static struct fimd_driver_data exynos5_fimd_driver_data = {
        .lcdblk_bypass_shift = 15,
        .has_shadowcon = 1,
        .has_vidoutcon = 1,
+       .has_vtsel = 1,
 };
 
 struct fimd_win_data {
@@ -354,7 +358,8 @@ static void fimd_commit(struct exynos_drm_manager *mgr)
                writel(0, timing_base + I80IFCONFBx(0));
 
                /* set video type selection to I80 interface */
-               if (ctx->sysreg && regmap_update_bits(ctx->sysreg,
+               if (driver_data->has_vtsel && ctx->sysreg &&
+                               regmap_update_bits(ctx->sysreg,
                                        driver_data->lcdblk_offset,
                                        0x3 << driver_data->lcdblk_vt_shift,
                                        0x1 << driver_data->lcdblk_vt_shift)) {