[PATCH] drm/panel: ilitek-ili9805: Use _multi variants

[Michail Tatas <michail.tatas@gmail.com>]

Convert functions mipi_dsi_* to mipi_dsi_*_multi as per the
gpu/todo file.
The multi variant of these functions include improved error 
handling.

Signed-off-by: Michail Tatas <michail.tatas@gmail.com>
---
 drivers/gpu/drm/panel/panel-ilitek-ili9805.c | 51 +++++---------------
 1 file changed, 13 insertions(+), 38 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9805.c b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
index e6c483851f1f..7e9587afebbe 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
@@ -159,36 +159,23 @@ static int ili9805_power_off(struct ili9805 *ctx)
 
 static int ili9805_activate(struct ili9805 *ctx)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int i, ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
+	int i;
 
 	for (i = 0; i < ctx->desc->init_length; i++) {
 		const struct ili9805_instr *instr = &ctx->desc->init[i];
 
-		ret = mipi_dsi_dcs_write_buffer(ctx->dsi, instr->data, instr->len);
-		if (ret < 0)
-			return ret;
+		mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, instr->data, instr->len);
 
 		if (instr->delay > 0)
-			msleep(instr->delay);
-	}
-
-	ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
-	if (ret) {
-		dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
-		return ret;
+			mipi_dsi_msleep(&dsi_ctx, instr->delay);
 	}
 
-	usleep_range(5000, 6000);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_usleep_range(&dsi_ctx, 5000, 6000);
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
 
-	ret = mipi_dsi_dcs_set_display_on(ctx->dsi);
-	if (ret) {
-		dev_err(dev, "Failed to set display ON (%d)\n", ret);
-		return ret;
-	}
-
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int ili9805_prepare(struct drm_panel *panel)
@@ -211,25 +198,13 @@ static int ili9805_prepare(struct drm_panel *panel)
 
 static int ili9805_deactivate(struct ili9805 *ctx)
 {
-	struct mipi_dsi_device *dsi = ctx->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
-
-	ret = mipi_dsi_dcs_set_display_off(ctx->dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display OFF (%d)\n", ret);
-		return ret;
-	}
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
 
-	usleep_range(5000, 10000);
-
-	ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_usleep_range(&dsi_ctx, 5000, 10000);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
 
-	return 0;
+	return dsi_ctx.accum_err;
 }
 
 static int ili9805_unprepare(struct drm_panel *panel)
-- 
2.43.0