From 3e5907a17fe4aa42d32015482132475e2b39ad50 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Thu, 21 Dec 2017 23:23:30 +0300 Subject: [PATCH] drm: rcar-du: lvds: Fix LVDCR1 for R-Car gen3 The LVDCR1 register for the R-Car gen3 SoCs was documented as having the layout different from the gen2 SoCs in the early R-Car gen3 manuals but since v0.52 the LVDCR1 layout is described as being the same as on the gen2 SoCs; the old CHn control values are said to be prohibited now (and there seems to be no valid output signal when they are used). Fixes: 6bc2e15cf21c ("drm: rcar-du: lvds: Add R-Car Gen3 support") Signed-off-by: Sergei Shtylyov Reviewed-by: Laurent Pinchart Tested-by: Laurent Pinchart Signed-off-by: Laurent Pinchart --- drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c | 10 ++++------ drivers/gpu/drm/rcar-du/rcar_lvds_regs.h | 6 ++---- 2 files changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c b/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c index 12d22f3db1af..553bab7b3b1e 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_lvdsenc.c @@ -70,9 +70,8 @@ static void rcar_du_lvdsenc_start_gen2(struct rcar_du_lvdsenc *lvds, /* Turn all the channels on. */ rcar_lvds_write(lvds, LVDCR1, - LVDCR1_CHSTBY_GEN2(3) | LVDCR1_CHSTBY_GEN2(2) | - LVDCR1_CHSTBY_GEN2(1) | LVDCR1_CHSTBY_GEN2(0) | - LVDCR1_CLKSTBY_GEN2); + LVDCR1_CHSTBY(3) | LVDCR1_CHSTBY(2) | + LVDCR1_CHSTBY(1) | LVDCR1_CHSTBY(0) | LVDCR1_CLKSTBY); /* * Turn the PLL on, wait for the startup delay, and turn the output @@ -109,9 +108,8 @@ static void rcar_du_lvdsenc_start_gen3(struct rcar_du_lvdsenc *lvds, /* Turn all the channels on. */ rcar_lvds_write(lvds, LVDCR1, - LVDCR1_CHSTBY_GEN3(3) | LVDCR1_CHSTBY_GEN3(2) | - LVDCR1_CHSTBY_GEN3(1) | LVDCR1_CHSTBY_GEN3(0) | - LVDCR1_CLKSTBY_GEN3); + LVDCR1_CHSTBY(3) | LVDCR1_CHSTBY(2) | + LVDCR1_CHSTBY(1) | LVDCR1_CHSTBY(0) | LVDCR1_CLKSTBY); /* * Turn the PLL on, set it to LVDS normal mode, wait for the startup diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h b/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h index d7d294ba2dbe..2896835ca7e9 100644 --- a/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h +++ b/drivers/gpu/drm/rcar-du/rcar_lvds_regs.h @@ -26,10 +26,8 @@ #define LVDCR1 0x0004 #define LVDCR1_CKSEL (1 << 15) /* Gen2 only */ -#define LVDCR1_CHSTBY_GEN2(n) (3 << (2 + (n) * 2)) /* Gen2 only */ -#define LVDCR1_CHSTBY_GEN3(n) (1 << (2 + (n) * 2)) /* Gen3 only */ -#define LVDCR1_CLKSTBY_GEN2 (3 << 0) /* Gen2 only */ -#define LVDCR1_CLKSTBY_GEN3 (1 << 0) /* Gen3 only */ +#define LVDCR1_CHSTBY(n) (3 << (2 + (n) * 2)) +#define LVDCR1_CLKSTBY (3 << 0) #define LVDPLLCR 0x0008 #define LVDPLLCR_CEEN (1 << 14)