Add support for the R-Car V3M (R8A77970) SoC to the LVDS encoder driver.
Note that there are some differences with the other R-Car gen3 SoCs, e.g.
LVDPLLCR has the same layout as in the R-Car gen2 SoCs...
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_lvds.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
Index: linux/drivers/gpu/drm/rcar-du/rcar_lvds.c
===================================================================
--- linux.orig/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ linux/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -32,6 +32,10 @@ enum rcar_lvds_mode {
};
#define RCAR_LVDS_QUIRK_LANES (1 << 0) /* LVDS lanes 1 and 3 inverted */
+#define RCAR_LVDS_QUIRK_GEN2_PLLCR (1 << 1) /* LVDPLLCR has gen2-like */
+ /* layout on R8A77970 */
+#define RCAR_LVDS_QUIRK_PHY (1 << 2) /* LVDS has PHY on R8A77970 */
+ /* and R8A7799{0|5} */
struct rcar_lvds_device_info {
unsigned int gen;
@@ -162,6 +166,7 @@ static void rcar_lvds_enable(struct drm_
*/
struct drm_crtc *crtc = lvds->bridge.encoder->crtc;
const struct drm_display_mode *mode = &lvds->display_mode;
+ unsigned int quirks = lvds->info->quirks;
unsigned int gen = lvds->info->gen;
u32 lvdcr0 = lvds->mode << LVDCR0_LVMD_SHIFT;
u32 lvdpllcr;
@@ -186,7 +191,7 @@ static void rcar_lvds_enable(struct drm_
LVDCTRCR_CTR2SEL_DISP | LVDCTRCR_CTR1SEL_VSYNC |
LVDCTRCR_CTR0SEL_HSYNC);
- if (lvds->info->quirks & RCAR_LVDS_QUIRK_LANES)
+ if (quirks & RCAR_LVDS_QUIRK_LANES)
lvdhcr = LVDCHCR_CHSEL_CH(0, 0) | LVDCHCR_CHSEL_CH(1, 3)
| LVDCHCR_CHSEL_CH(2, 2) | LVDCHCR_CHSEL_CH(3, 1);
else
@@ -195,7 +200,7 @@ static void rcar_lvds_enable(struct drm_
rcar_lvds_write(lvds, LVDCHCR, lvdhcr);
/* PLL clock configuration */
- if (gen < 3)
+ if (gen < 3 || quirks & RCAR_LVDS_QUIRK_GEN2_PLLCR)
lvdpllcr = rcar_lvds_lvdpllcr_gen2(mode->clock);
else
lvdpllcr = rcar_lvds_lvdpllcr_gen3(mode->clock);
@@ -227,6 +232,12 @@ static void rcar_lvds_enable(struct drm_
rcar_lvds_write(lvds, LVDCR0, lvdcr0);
}
+ if (quirks & RCAR_LVDS_QUIRK_PHY) {
+ /* Turn on the LVDS PHY. */
+ lvdcr0 |= LVDCR0_LVEN;
+ rcar_lvds_write(lvds, LVDCR0, lvdcr0);
+ }
+
/* Wait for the startup delay. */
usleep_range(100, 150);
@@ -499,6 +510,11 @@ static const struct rcar_lvds_device_inf
.gen = 3,
};
+static const struct rcar_lvds_device_info rcar_lvds_r8a77970_info = {
+ .gen = 3,
+ .quirks = RCAR_LVDS_QUIRK_GEN2_PLLCR | RCAR_LVDS_QUIRK_PHY,
+};
+
static const struct of_device_id rcar_lvds_of_table[] = {
{ .compatible = "renesas,r8a7743-lvds", .data = &rcar_lvds_gen2_info },
{ .compatible = "renesas,r8a7790-lvds", .data = &rcar_lvds_r8a7790_info },
@@ -506,6 +522,7 @@ static const struct of_device_id rcar_lv
{ .compatible = "renesas,r8a7793-lvds", .data = &rcar_lvds_gen2_info },
{ .compatible = "renesas,r8a7795-lvds", .data = &rcar_lvds_gen3_info },
{ .compatible = "renesas,r8a7796-lvds", .data = &rcar_lvds_gen3_info },
+ { .compatible = "renesas,r8a77970-lvds", .data = &rcar_lvds_r8a77970_info },
{ }
};
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