Quoting Philip Chen (2021-09-08 11:18:05)
> diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
> index 685e9c38b2db..a16725dbf912 100644
> --- a/drivers/gpu/drm/bridge/parade-ps8640.c
> +++ b/drivers/gpu/drm/bridge/parade-ps8640.c
> @@ -64,12 +65,29 @@ struct ps8640 {
> struct drm_bridge *panel_bridge;
> struct mipi_dsi_device *dsi;
> struct i2c_client *page[MAX_DEVS];
> + struct regmap *regmap[MAX_DEVS];
> struct regulator_bulk_data supplies[2];
> struct gpio_desc *gpio_reset;
> struct gpio_desc *gpio_powerdown;
> bool powered;
> };
>
> +static const struct regmap_range ps8640_volatile_ranges[] = {
> + { .range_min = 0, .range_max = 0xff },
Is the plan to fill this out later or is 0xff the max register? If it's
the latter then I think adding the max register to regmap_config is
simpler.
> +};
> +
> +static const struct regmap_access_table ps8640_volatile_table = {
> + .yes_ranges = ps8640_volatile_ranges,
> + .n_yes_ranges = ARRAY_SIZE(ps8640_volatile_ranges),
> +};
> +
> +static const struct regmap_config ps8640_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .volatile_table = &ps8640_volatile_table,
> + .cache_type = REGCACHE_NONE,
> +};
> +
> static inline struct ps8640 *bridge_to_ps8640(struct drm_bridge *e)
> {
> return container_of(e, struct ps8640, bridge);
> @@ -78,13 +96,13 @@ static inline struct ps8640 *bridge_to_ps8640(struct drm_bridge *e)
> static int ps8640_bridge_vdo_control(struct ps8640 *ps_bridge,
> const enum ps8640_vdo_control ctrl)
> {
> - struct i2c_client *client = ps_bridge->page[PAGE3_DSI_CNTL1];
> - u8 vdo_ctrl_buf[] = { VDO_CTL_ADD, ctrl };
> + struct regmap *map = ps_bridge->regmap[PAGE3_DSI_CNTL1];
> + u8 vdo_ctrl_buf[] = {VDO_CTL_ADD, ctrl};
Nitpick: Add a space after { and before }.
> int ret;
>
> - ret = i2c_smbus_write_i2c_block_data(client, PAGE3_SET_ADD,
> - sizeof(vdo_ctrl_buf),
> - vdo_ctrl_buf);
> + ret = regmap_bulk_write(map, PAGE3_SET_ADD,
> + vdo_ctrl_buf, sizeof(vdo_ctrl_buf));
> +
> if (ret < 0) {
> DRM_ERROR("failed to %sable VDO: %d\n",
> ctrl == ENABLE ? "en" : "dis", ret);
