diff options
| -rw-r--r-- | drivers/gpu/drm/bridge/samsung-dsim.c | 16 | ||||
| -rw-r--r-- | include/drm/bridge/samsung-dsim.h | 1 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index f41650ff7e13..49c4456ebd23 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -157,6 +157,11 @@ #define DSIM_INT_RX_ECC_ERR BIT(15) #define DSIM_INT_RX_CRC_ERR BIT(14) +/* DSIM_SFRCTRL */ +#define DSIM_SFR_CTRL_STAND_BY BIT(4) +#define DSIM_SFR_CTRL_SHADOW_UPDATE BIT(1) +#define DSIM_SFR_CTRL_SHADOW_EN BIT(0) + /* DSIM_FIFOCTRL */ #define DSIM_RX_DATA_FULL BIT(25) #define DSIM_RX_DATA_EMPTY BIT(24) @@ -257,6 +262,7 @@ enum reg_idx { DSIM_PKTHDR_REG, /* Packet Header FIFO register */ DSIM_PAYLOAD_REG, /* Payload FIFO register */ DSIM_RXFIFO_REG, /* Read FIFO register */ + DSIM_SFRCTRL_REG, /* SFR standby and shadow control register */ DSIM_FIFOCTRL_REG, /* FIFO status and control register */ DSIM_PLLCTRL_REG, /* PLL control register */ DSIM_PHYCTRL_REG, @@ -1037,6 +1043,7 @@ static void samsung_dsim_set_display_mode(struct samsung_dsim *dsi) static void samsung_dsim_set_display_enable(struct samsung_dsim *dsi, bool enable) { + const struct samsung_dsim_driver_data *driver_data = dsi->driver_data; u32 reg; reg = samsung_dsim_read(dsi, DSIM_MDRESOL_REG); @@ -1045,6 +1052,15 @@ static void samsung_dsim_set_display_enable(struct samsung_dsim *dsi, bool enabl else reg &= ~DSIM_MAIN_STAND_BY; samsung_dsim_write(dsi, DSIM_MDRESOL_REG, reg); + + if (driver_data->has_sfrctrl) { + reg = samsung_dsim_read(dsi, DSIM_SFRCTRL_REG); + if (enable) + reg |= DSIM_SFR_CTRL_STAND_BY; + else + reg &= ~DSIM_SFR_CTRL_STAND_BY; + samsung_dsim_write(dsi, DSIM_SFRCTRL_REG, reg); + } } static int samsung_dsim_wait_for_hdr_fifo(struct samsung_dsim *dsi) diff --git a/include/drm/bridge/samsung-dsim.h b/include/drm/bridge/samsung-dsim.h index d7877191bad1..f0c1e5c5ed49 100644 --- a/include/drm/bridge/samsung-dsim.h +++ b/include/drm/bridge/samsung-dsim.h @@ -57,6 +57,7 @@ struct samsung_dsim_driver_data { unsigned int has_freqband:1; unsigned int has_clklane_stop:1; unsigned int has_broken_fifoctrl_emptyhdr:1; + unsigned int has_sfrctrl:1; unsigned int num_clks; unsigned int min_freq; unsigned int max_freq; |