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drm: rcar-du: lvds: Add R8A77970 support

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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@cogentembedded.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Sergei Shtylyov 2018-03-01 21:10:16 +03:00 committed by Laurent Pinchart
parent fe9ac01324
commit b6eb7102ad
1 changed files with 18 additions and 2 deletions
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20
drivers/gpu/drm/rcar-du/rcar_lvds.c
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@ -32,6 +32,9 @@ 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 layout */
#define RCAR_LVDS_QUIRK_GEN3_LVEN (1 << 2) /* LVEN bit needs to be set */
/* on R8A77970/R8A7799x */
struct rcar_lvds_device_info {
unsigned int gen;
@ -191,7 +194,7 @@ static void rcar_lvds_enable(struct drm_bridge *bridge)
rcar_lvds_write(lvds, LVDCHCR, lvdhcr);
/* PLL clock configuration. */
if (lvds->info->gen < 3)
if (lvds->info->quirks & RCAR_LVDS_QUIRK_GEN2_PLLCR)
lvdpllcr = rcar_lvds_lvdpllcr_gen2(mode->clock);
else
lvdpllcr = rcar_lvds_lvdpllcr_gen3(mode->clock);
@ -224,6 +227,12 @@ static void rcar_lvds_enable(struct drm_bridge *bridge)
rcar_lvds_write(lvds, LVDCR0, lvdcr0);
}
if (lvds->info->quirks & RCAR_LVDS_QUIRK_GEN3_LVEN) {
/* Turn on the LVDS PHY. */
lvdcr0 |= LVDCR0_LVEN;
rcar_lvds_write(lvds, LVDCR0, lvdcr0);
}
/* Wait for the startup delay. */
usleep_range(100, 150);
@ -485,17 +494,23 @@ static int rcar_lvds_remove(struct platform_device *pdev)
static const struct rcar_lvds_device_info rcar_lvds_gen2_info = {
.gen = 2,
.quirks = RCAR_LVDS_QUIRK_GEN2_PLLCR,
};
static const struct rcar_lvds_device_info rcar_lvds_r8a7790_info = {
.gen = 2,
.quirks = RCAR_LVDS_QUIRK_LANES,
.quirks = RCAR_LVDS_QUIRK_GEN2_PLLCR | RCAR_LVDS_QUIRK_LANES,
};
static const struct rcar_lvds_device_info rcar_lvds_gen3_info = {
.gen = 3,
};
static const struct rcar_lvds_device_info rcar_lvds_r8a77970_info = {
.gen = 3,
.quirks = RCAR_LVDS_QUIRK_GEN2_PLLCR | RCAR_LVDS_QUIRK_GEN3_LVEN,
};
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 },
@ -503,6 +518,7 @@ static const struct of_device_id rcar_lvds_of_table[] = {
{ .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 },
{ }
};