drm/bridge: anx7625: use struct drm_edid more

Prefer struct drm_edid based functions over struct edid.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1d1290829fa463237b560c43e77170a986186031.1715347488.git.jani.nikula@intel.com

drivers/gpu/drm/bridge/analogix/anx7625.c

@@ -464,9 +464,11 @@ static int anx7625_odfc_config(struct anx7625_data *ctx,
  */
 static int anx7625_set_k_value(struct anx7625_data *ctx)
 {
-	struct edid *edid = (struct edid *)ctx->slimport_edid_p.edid_raw_data;
+	struct drm_edid_product_id id;
 
-	if (edid->mfg_id[0] == IVO_MID0 && edid->mfg_id[1] == IVO_MID1)
+	drm_edid_get_product_id(ctx->cached_drm_edid, &id);
+
+	if (be16_to_cpu(id.manufacturer_name) == IVO_MID)
 		return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client,
 					 MIPI_DIGITAL_ADJ_1, 0x3B);
 
@@ -1526,7 +1528,8 @@ static int anx7625_wait_hpd_asserted(struct drm_dp_aux *aux,
 
 static void anx7625_remove_edid(struct anx7625_data *ctx)
 {
-	ctx->slimport_edid_p.edid_block_num = -1;
+	drm_edid_free(ctx->cached_drm_edid);
+	ctx->cached_drm_edid = NULL;
 }
 
 static void anx7625_dp_adjust_swing(struct anx7625_data *ctx)
@@ -1787,27 +1790,32 @@ static ssize_t anx7625_aux_transfer(struct drm_dp_aux *aux,
 static const struct drm_edid *anx7625_edid_read(struct anx7625_data *ctx)
 {
 	struct device *dev = ctx->dev;
-	struct s_edid_data *p_edid = &ctx->slimport_edid_p;
+	u8 *edid_buf;
 	int edid_num;
 
-	if (ctx->slimport_edid_p.edid_block_num > 0)
+	if (ctx->cached_drm_edid)
 		goto out;
 
+	edid_buf = kmalloc(FOUR_BLOCK_SIZE, GFP_KERNEL);
+	if (!edid_buf)
+		return NULL;
+
 	pm_runtime_get_sync(dev);
 	_anx7625_hpd_polling(ctx, 5000 * 100);
-	edid_num = sp_tx_edid_read(ctx, p_edid->edid_raw_data);
+	edid_num = sp_tx_edid_read(ctx, edid_buf);
 	pm_runtime_put_sync(dev);
 
 	if (edid_num < 1) {
 		DRM_DEV_ERROR(dev, "Fail to read EDID: %d\n", edid_num);
+		kfree(edid_buf);
 		return NULL;
 	}
 
-	p_edid->edid_block_num = edid_num;
+	ctx->cached_drm_edid = drm_edid_alloc(edid_buf, FOUR_BLOCK_SIZE);
+	kfree(edid_buf);
 
 out:
-	return drm_edid_alloc(ctx->slimport_edid_p.edid_raw_data,
-			      FOUR_BLOCK_SIZE);
+	return drm_edid_dup(ctx->cached_drm_edid);
 }
 
 static enum drm_connector_status anx7625_sink_detect(struct anx7625_data *ctx)

drivers/gpu/drm/bridge/analogix/anx7625.h

@@ -286,8 +286,7 @@
 
 #define  MIPI_LANE_CTRL_10               0x0F
 #define  MIPI_DIGITAL_ADJ_1     0x1B
-#define  IVO_MID0               0x26
-#define  IVO_MID1               0xCF
+#define  IVO_MID                0x26CF
 
 #define  MIPI_PLL_M_NUM_23_16   0x1E
 #define  MIPI_PLL_M_NUM_15_8    0x1F
@@ -417,11 +416,6 @@ enum audio_wd_len {
 #define EDID_TRY_CNT	3
 #define SUPPORT_PIXEL_CLOCK	300000
 
-struct s_edid_data {
-	int edid_block_num;
-	u8 edid_raw_data[FOUR_BLOCK_SIZE];
-};
-
 /***************** Display End *****************/
 
 #define MAX_LANES_SUPPORT	4
@@ -466,7 +460,7 @@ struct anx7625_data {
 	struct anx7625_i2c_client i2c;
 	struct i2c_client *last_client;
 	struct timer_list hdcp_timer;
-	struct s_edid_data slimport_edid_p;
+	const struct drm_edid *cached_drm_edid;
 	struct device *codec_dev;
 	hdmi_codec_plugged_cb plugged_cb;
 	struct work_struct work;