drm: bridge: it66121: Move VID/PID to new it66121_chip_info structure

This will make it easier later to introduce support for new chips in
this driver.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221214130122.12911-1-paul@crapouillou.net

diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c
index 7972003..43b027b 100644 (file)
--- 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);