On Wed, 14 Dec 2022 at 14:01, Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote:
>
> This will make it easier later to introduce support for new chips in
> this driver.
>
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/bridge/ite-it66121.c | 27 +++++++++++++++------------
> 1 file changed, 15 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c
> index 7972003d4776..43b027b85b8e 100644
> --- a/drivers/gpu/drm/bridge/ite-it66121.c
> +++ b/drivers/gpu/drm/bridge/ite-it66121.c
> @@ -35,10 +35,6 @@
> #define IT66121_DEVICE_ID0_REG 0x02
> #define IT66121_DEVICE_ID1_REG 0x03
>
> -#define IT66121_VENDOR_ID0 0x54
> -#define IT66121_VENDOR_ID1 0x49
> -#define IT66121_DEVICE_ID0 0x12
> -#define IT66121_DEVICE_ID1 0x06
> #define IT66121_REVISION_MASK GENMASK(7, 4)
> #define IT66121_DEVICE_ID1_MASK GENMASK(3, 0)
>
> @@ -286,13 +282,12 @@
> #define IT66121_AUD_SWL_16BIT 0x2
> #define IT66121_AUD_SWL_NOT_INDICATED 0x0
>
> -#define IT66121_VENDOR_ID0 0x54
> -#define IT66121_VENDOR_ID1 0x49
> -#define IT66121_DEVICE_ID0 0x12
> -#define IT66121_DEVICE_ID1 0x06
> -#define IT66121_DEVICE_MASK 0x0F
> #define IT66121_AFE_CLK_HIGH 80000 /* Khz */
>
> +struct it66121_chip_info {
> + u16 vid, pid;
> +};
> +
> struct it66121_ctx {
> struct regmap *regmap;
> struct drm_bridge bridge;
> @@ -311,6 +306,7 @@ struct it66121_ctx {
> u8 swl;
> bool auto_cts;
> } audio;
> + const struct it66121_chip_info *info;
> };
>
> static const struct regmap_range_cfg it66121_regmap_banks[] = {
> @@ -1451,6 +1447,7 @@ static const char * const it66121_supplies[] = {
>
> static int it66121_probe(struct i2c_client *client)
> {
> + const struct i2c_device_id *id = i2c_client_get_device_id(client);
> u32 revision_id, vendor_ids[2] = { 0 }, device_ids[2] = { 0 };
> struct device_node *ep;
> int ret;
> @@ -1472,6 +1469,7 @@ static int it66121_probe(struct i2c_client *client)
>
> ctx->dev = dev;
> ctx->client = client;
> + ctx->info = (const struct it66121_chip_info *) id->driver_data;
>
> of_property_read_u32(ep, "bus-width", &ctx->bus_width);
> of_node_put(ep);
> @@ -1523,8 +1521,8 @@ static int it66121_probe(struct i2c_client *client)
> revision_id = FIELD_GET(IT66121_REVISION_MASK, device_ids[1]);
> device_ids[1] &= IT66121_DEVICE_ID1_MASK;
>
> - if (vendor_ids[0] != IT66121_VENDOR_ID0 || vendor_ids[1] != IT66121_VENDOR_ID1 ||
> - device_ids[0] != IT66121_DEVICE_ID0 || device_ids[1] != IT66121_DEVICE_ID1) {
> + if ((vendor_ids[1] << 8 | vendor_ids[0]) != ctx->info->vid ||
> + (device_ids[1] << 8 | device_ids[0]) != ctx->info->pid) {
> return -ENODEV;
> }
>
> @@ -1563,8 +1561,13 @@ static const struct of_device_id it66121_dt_match[] = {
> };
> MODULE_DEVICE_TABLE(of, it66121_dt_match);
>
> +static const struct it66121_chip_info it66121_chip_info = {
> + .vid = 0x4954,
> + .pid = 0x0612,
> +};
> +
> static const struct i2c_device_id it66121_id[] = {
> - { "it66121", 0 },
> + { "it66121", (kernel_ulong_t) &it66121_chip_info },
> { }
> };
> MODULE_DEVICE_TABLE(i2c, it66121_id);
> --
> 2.35.1
>
Reviewed-by: Robert Foss <robert.foss@xxxxxxxxxx>
