diff options
| author | Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> | 2018-03-01 19:10:16 +0100 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2018-03-07 18:30:06 +0100 |
| commit | b6eb7102ad6dc7ae35c23b517809f5ae5aa5ccdd (patch) | |
| tree | 179b0673c27f13626d7c54a19df4462b71edbd74 /drivers/gpu/drm/rcar-du | |
| parent | drm: rcar-du: Add R8A77970 support (diff) | |
| download | linux-b6eb7102ad6dc7ae35c23b517809f5ae5aa5ccdd.tar.xz linux-b6eb7102ad6dc7ae35c23b517809f5ae5aa5ccdd.zip | |
drm: rcar-du: lvds: Add R8A77970 support
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>
Diffstat (limited to 'drivers/gpu/drm/rcar-du')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_lvds.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c index 1247e26a0559..3d2d3bbd1342 100644 --- a/drivers/gpu/drm/rcar-du/rcar_lvds.c +++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c @@ -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 }, { } }; |