Changes the himax-hx8394 panel to use multi style functions for
improved error handling.

Reviewed-by: Dmitry Baryshkov <dmitry.barysh...@oss.qualcomm.com>
Signed-off-by: Tejas Vipin <tejasvipi...@gmail.com>
---
Changes in v2:
    - Revert behavior change in hx8394_enable
    - Move variable declaration to top of function

Link to v1: 
https://lore.kernel.org/all/20250323053007.681346-1-tejasvipi...@gmail.com/
---
 drivers/gpu/drm/panel/panel-himax-hx8394.c | 441 ++++++++++-----------
 1 file changed, 210 insertions(+), 231 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-himax-hx8394.c 
b/drivers/gpu/drm/panel/panel-himax-hx8394.c
index 92b03a2f65a3..ff994bf0e3cc 100644
--- a/drivers/gpu/drm/panel/panel-himax-hx8394.c
+++ b/drivers/gpu/drm/panel/panel-himax-hx8394.c
@@ -80,7 +80,7 @@ struct hx8394_panel_desc {
        unsigned int lanes;
        unsigned long mode_flags;
        enum mipi_dsi_pixel_format format;
-       int (*init_sequence)(struct hx8394 *ctx);
+       void (*init_sequence)(struct mipi_dsi_multi_context *dsi_ctx);
 };
 
 static inline struct hx8394 *panel_to_hx8394(struct drm_panel *panel)
@@ -88,98 +88,94 @@ static inline struct hx8394 *panel_to_hx8394(struct 
drm_panel *panel)
        return container_of(panel, struct hx8394, panel);
 }
 
-static int hsd060bhw4_init_sequence(struct hx8394 *ctx)
+static void hsd060bhw4_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
 {
-       struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-
        /* 5.19.8 SETEXTC: Set extension command (B9h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETEXTC,
-                              0xff, 0x83, 0x94);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETEXTC,
+                                    0xff, 0x83, 0x94);
 
        /* 5.19.2 SETPOWER: Set power (B1h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPOWER,
-                              0x48, 0x11, 0x71, 0x09, 0x32, 0x24, 0x71, 0x31, 
0x55, 0x30);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPOWER,
+                                    0x48, 0x11, 0x71, 0x09, 0x32, 0x24, 0x71, 
0x31, 0x55, 0x30);
 
        /* 5.19.9 SETMIPI: Set MIPI control (BAh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETMIPI,
-                              0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETMIPI,
+                                    0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
 
        /* 5.19.3 SETDISP: Set display related register (B2h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETDISP,
-                              0x00, 0x80, 0x78, 0x0c, 0x07);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETDISP,
+                                    0x00, 0x80, 0x78, 0x0c, 0x07);
 
        /* 5.19.4 SETCYC: Set display waveform cycles (B4h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETCYC,
-                              0x12, 0x63, 0x12, 0x63, 0x12, 0x63, 0x01, 0x0c, 
0x7c, 0x55,
-                              0x00, 0x3f, 0x12, 0x6b, 0x12, 0x6b, 0x12, 0x6b, 
0x01, 0x0c,
-                              0x7c);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETCYC,
+                                    0x12, 0x63, 0x12, 0x63, 0x12, 0x63, 0x01, 
0x0c, 0x7c, 0x55,
+                                    0x00, 0x3f, 0x12, 0x6b, 0x12, 0x6b, 0x12, 
0x6b, 0x01, 0x0c,
+                                    0x7c);
 
        /* 5.19.19 SETGIP0: Set GIP Option0 (D3h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP0,
-                              0x00, 0x00, 0x00, 0x00, 0x3c, 0x1c, 0x00, 0x00, 
0x32, 0x10,
-                              0x09, 0x00, 0x09, 0x32, 0x15, 0xad, 0x05, 0xad, 
0x32, 0x00,
-                              0x00, 0x00, 0x00, 0x37, 0x03, 0x0b, 0x0b, 0x37, 
0x00, 0x00,
-                              0x00, 0x0c, 0x40);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP0,
+                                    0x00, 0x00, 0x00, 0x00, 0x3c, 0x1c, 0x00, 
0x00, 0x32, 0x10,
+                                    0x09, 0x00, 0x09, 0x32, 0x15, 0xad, 0x05, 
0xad, 0x32, 0x00,
+                                    0x00, 0x00, 0x00, 0x37, 0x03, 0x0b, 0x0b, 
0x37, 0x00, 0x00,
+                                    0x00, 0x0c, 0x40);
 
        /* 5.19.20 Set GIP Option1 (D5h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP1,
-                              0x19, 0x19, 0x18, 0x18, 0x1b, 0x1b, 0x1a, 0x1a, 
0x00, 0x01,
-                              0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x20, 0x21, 
0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18,
-                              0x24, 0x25, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP1,
+                                    0x19, 0x19, 0x18, 0x18, 0x1b, 0x1b, 0x1a, 
0x1a, 0x00, 0x01,
+                                    0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x20, 
0x21, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18, 0x18,
+                                    0x24, 0x25, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
 
        /* 5.19.21 Set GIP Option2 (D6h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP2,
-                              0x18, 0x18, 0x19, 0x19, 0x1b, 0x1b, 0x1a, 0x1a, 
0x07, 0x06,
-                              0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x25, 0x24, 
0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18,
-                              0x21, 0x20, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP2,
+                                    0x18, 0x18, 0x19, 0x19, 0x1b, 0x1b, 0x1a, 
0x1a, 0x07, 0x06,
+                                    0x05, 0x04, 0x03, 0x02, 0x01, 0x00, 0x25, 
0x24, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18, 0x18,
+                                    0x21, 0x20, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18);
 
        /* 5.19.25 SETGAMMA: Set gamma curve related setting (E0h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGAMMA,
-                              0x00, 0x04, 0x0c, 0x12, 0x14, 0x18, 0x1a, 0x18, 
0x31, 0x3f,
-                              0x4d, 0x4c, 0x54, 0x65, 0x6b, 0x70, 0x7f, 0x82, 
0x7e, 0x8a,
-                              0x99, 0x4a, 0x48, 0x49, 0x4b, 0x4a, 0x4c, 0x4b, 
0x7f, 0x00,
-                              0x04, 0x0c, 0x11, 0x13, 0x17, 0x1a, 0x18, 0x31,
-                              0x3f, 0x4d, 0x4c, 0x54, 0x65, 0x6b, 0x70, 0x7f,
-                              0x82, 0x7e, 0x8a, 0x99, 0x4a, 0x48, 0x49, 0x4b,
-                              0x4a, 0x4c, 0x4b, 0x7f);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGAMMA,
+                                    0x00, 0x04, 0x0c, 0x12, 0x14, 0x18, 0x1a, 
0x18, 0x31, 0x3f,
+                                    0x4d, 0x4c, 0x54, 0x65, 0x6b, 0x70, 0x7f, 
0x82, 0x7e, 0x8a,
+                                    0x99, 0x4a, 0x48, 0x49, 0x4b, 0x4a, 0x4c, 
0x4b, 0x7f, 0x00,
+                                    0x04, 0x0c, 0x11, 0x13, 0x17, 0x1a, 0x18, 
0x31,
+                                    0x3f, 0x4d, 0x4c, 0x54, 0x65, 0x6b, 0x70, 
0x7f,
+                                    0x82, 0x7e, 0x8a, 0x99, 0x4a, 0x48, 0x49, 
0x4b,
+                                    0x4a, 0x4c, 0x4b, 0x7f);
 
        /* 5.19.17 SETPANEL (CCh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPANEL,
-                              0x0b);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPANEL,
+                                    0x0b);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN1,
-                              0x1f, 0x31);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN1,
+                                    0x1f, 0x31);
 
        /* 5.19.5 SETVCOM: Set VCOM voltage (B6h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETVCOM,
-                              0x7d, 0x7d);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETVCOM,
+                                    0x7d, 0x7d);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN3,
-                              0x02);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN3,
+                                    0x02);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x01);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x01);
 
        /* 5.19.2 SETPOWER: Set power (B1h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPOWER,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPOWER,
+                                    0x00);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x00);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN3,
-                              0xed);
-
-       return 0;
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN3,
+                                    0xed);
 }
 
 static const struct drm_display_mode hsd060bhw4_mode = {
@@ -205,114 +201,110 @@ static const struct hx8394_panel_desc hsd060bhw4_desc = 
{
        .init_sequence = hsd060bhw4_init_sequence,
 };
 
-static int powkiddy_x55_init_sequence(struct hx8394 *ctx)
+static void powkiddy_x55_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
 {
-       struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-
        /* 5.19.8 SETEXTC: Set extension command (B9h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETEXTC,
-                              0xff, 0x83, 0x94);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETEXTC,
+                                    0xff, 0x83, 0x94);
 
        /* 5.19.9 SETMIPI: Set MIPI control (BAh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETMIPI,
-                              0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETMIPI,
+                                    0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
 
        /* 5.19.2 SETPOWER: Set power (B1h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPOWER,
-                              0x48, 0x12, 0x72, 0x09, 0x32, 0x54, 0x71, 0x71, 
0x57, 0x47);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPOWER,
+                                    0x48, 0x12, 0x72, 0x09, 0x32, 0x54, 0x71, 
0x71, 0x57, 0x47);
 
        /* 5.19.3 SETDISP: Set display related register (B2h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETDISP,
-                              0x00, 0x80, 0x64, 0x2c, 0x16, 0x2f);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETDISP,
+                                    0x00, 0x80, 0x64, 0x2c, 0x16, 0x2f);
 
        /* 5.19.4 SETCYC: Set display waveform cycles (B4h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETCYC,
-                              0x73, 0x74, 0x73, 0x74, 0x73, 0x74, 0x01, 0x0c, 
0x86, 0x75,
-                              0x00, 0x3f, 0x73, 0x74, 0x73, 0x74, 0x73, 0x74, 
0x01, 0x0c,
-                              0x86);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETCYC,
+                                    0x73, 0x74, 0x73, 0x74, 0x73, 0x74, 0x01, 
0x0c, 0x86, 0x75,
+                                    0x00, 0x3f, 0x73, 0x74, 0x73, 0x74, 0x73, 
0x74, 0x01, 0x0c,
+                                    0x86);
 
        /* 5.19.5 SETVCOM: Set VCOM voltage (B6h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETVCOM,
-                              0x6e, 0x6e);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETVCOM,
+                                    0x6e, 0x6e);
 
        /* 5.19.19 SETGIP0: Set GIP Option0 (D3h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP0,
-                              0x00, 0x00, 0x07, 0x07, 0x40, 0x07, 0x0c, 0x00, 
0x08, 0x10,
-                              0x08, 0x00, 0x08, 0x54, 0x15, 0x0a, 0x05, 0x0a, 
0x02, 0x15,
-                              0x06, 0x05, 0x06, 0x47, 0x44, 0x0a, 0x0a, 0x4b, 
0x10, 0x07,
-                              0x07, 0x0c, 0x40);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP0,
+                                    0x00, 0x00, 0x07, 0x07, 0x40, 0x07, 0x0c, 
0x00, 0x08, 0x10,
+                                    0x08, 0x00, 0x08, 0x54, 0x15, 0x0a, 0x05, 
0x0a, 0x02, 0x15,
+                                    0x06, 0x05, 0x06, 0x47, 0x44, 0x0a, 0x0a, 
0x4b, 0x10, 0x07,
+                                    0x07, 0x0c, 0x40);
 
        /* 5.19.20 Set GIP Option1 (D5h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP1,
-                              0x1c, 0x1c, 0x1d, 0x1d, 0x00, 0x01, 0x02, 0x03, 
0x04, 0x05,
-                              0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x24, 0x25, 
0x18, 0x18,
-                              0x26, 0x27, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x20, 0x21,
-                              0x18, 0x18, 0x18, 0x18);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP1,
+                                    0x1c, 0x1c, 0x1d, 0x1d, 0x00, 0x01, 0x02, 
0x03, 0x04, 0x05,
+                                    0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x24, 
0x25, 0x18, 0x18,
+                                    0x26, 0x27, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x20, 0x21,
+                                    0x18, 0x18, 0x18, 0x18);
 
        /* 5.19.21 Set GIP Option2 (D6h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP2,
-                              0x1c, 0x1c, 0x1d, 0x1d, 0x07, 0x06, 0x05, 0x04, 
0x03, 0x02,
-                              0x01, 0x00, 0x0b, 0x0a, 0x09, 0x08, 0x21, 0x20, 
0x18, 0x18,
-                              0x27, 0x26, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x25, 0x24,
-                              0x18, 0x18, 0x18, 0x18);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP2,
+                                    0x1c, 0x1c, 0x1d, 0x1d, 0x07, 0x06, 0x05, 
0x04, 0x03, 0x02,
+                                    0x01, 0x00, 0x0b, 0x0a, 0x09, 0x08, 0x21, 
0x20, 0x18, 0x18,
+                                    0x27, 0x26, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 
0x18, 0x25, 0x24,
+                                    0x18, 0x18, 0x18, 0x18);
 
        /* 5.19.25 SETGAMMA: Set gamma curve related setting (E0h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGAMMA,
-                              0x00, 0x0a, 0x15, 0x1b, 0x1e, 0x21, 0x24, 0x22, 
0x47, 0x56,
-                              0x65, 0x66, 0x6e, 0x82, 0x88, 0x8b, 0x9a, 0x9d, 
0x98, 0xa8,
-                              0xb9, 0x5d, 0x5c, 0x61, 0x66, 0x6a, 0x6f, 0x7f, 
0x7f, 0x00,
-                              0x0a, 0x15, 0x1b, 0x1e, 0x21, 0x24, 0x22, 0x47, 
0x56, 0x65,
-                              0x65, 0x6e, 0x81, 0x87, 0x8b, 0x98, 0x9d, 0x99, 
0xa8, 0xba,
-                              0x5d, 0x5d, 0x62, 0x67, 0x6b, 0x72, 0x7f, 0x7f);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGAMMA,
+                                    0x00, 0x0a, 0x15, 0x1b, 0x1e, 0x21, 0x24, 
0x22, 0x47, 0x56,
+                                    0x65, 0x66, 0x6e, 0x82, 0x88, 0x8b, 0x9a, 
0x9d, 0x98, 0xa8,
+                                    0xb9, 0x5d, 0x5c, 0x61, 0x66, 0x6a, 0x6f, 
0x7f, 0x7f, 0x00,
+                                    0x0a, 0x15, 0x1b, 0x1e, 0x21, 0x24, 0x22, 
0x47, 0x56, 0x65,
+                                    0x65, 0x6e, 0x81, 0x87, 0x8b, 0x98, 0x9d, 
0x99, 0xa8, 0xba,
+                                    0x5d, 0x5d, 0x62, 0x67, 0x6b, 0x72, 0x7f, 
0x7f);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN1,
-                              0x1f, 0x31);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN1,
+                                    0x1f, 0x31);
 
        /* 5.19.17 SETPANEL (CCh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPANEL,
-                              0x0b);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPANEL,
+                                    0x0b);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN3,
-                              0x02);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN3,
+                                    0x02);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x02);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x02);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN4,
-                              0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
0xff, 0xff,
-                              0xff, 0xff);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN4,
+                                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
0xff, 0xff, 0xff,
+                                    0xff, 0xff);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x00);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x01);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x01);
 
        /* 5.19.2 SETPOWER: Set power (B1h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPOWER,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPOWER,
+                                    0x00);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x00);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN5,
-                              0x40, 0x81, 0x50, 0x00, 0x1a, 0xfc, 0x01);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN5,
+                                    0x40, 0x81, 0x50, 0x00, 0x1a, 0xfc, 0x01);
 
        /* Unknown command, not listed in the HX8394-F datasheet */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN2,
-                              0xed);
-
-       return 0;
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN2,
+                                    0xed);
 }
 
 static const struct drm_display_mode powkiddy_x55_mode = {
@@ -339,131 +331,127 @@ static const struct hx8394_panel_desc powkiddy_x55_desc 
= {
        .init_sequence = powkiddy_x55_init_sequence,
 };
 
-static int mchp_ac40t08a_init_sequence(struct hx8394 *ctx)
+static void mchp_ac40t08a_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
 {
-       struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-
        /* DCS commands do not seem to be sent correclty without this delay */
-       msleep(20);
+       mipi_dsi_msleep(dsi_ctx, 20);
 
        /* 5.19.8 SETEXTC: Set extension command (B9h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETEXTC,
-                              0xff, 0x83, 0x94);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETEXTC,
+                                    0xff, 0x83, 0x94);
 
        /* 5.19.9 SETMIPI: Set MIPI control (BAh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETMIPI,
-                              0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETMIPI,
+                                    0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0);
 
        /* 5.19.2 SETPOWER: Set power (B1h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPOWER,
-                              0x48, 0x12, 0x72, 0x09, 0x32, 0x54,
-                              0x71, 0x71, 0x57, 0x47);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPOWER,
+                                    0x48, 0x12, 0x72, 0x09, 0x32, 0x54,
+                                    0x71, 0x71, 0x57, 0x47);
 
        /* 5.19.3 SETDISP: Set display related register (B2h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETDISP,
-                              0x00, 0x80, 0x64, 0x0c, 0x0d, 0x2f);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETDISP,
+                                    0x00, 0x80, 0x64, 0x0c, 0x0d, 0x2f);
 
        /* 5.19.4 SETCYC: Set display waveform cycles (B4h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETCYC,
-                              0x73, 0x74, 0x73, 0x74, 0x73, 0x74,
-                              0x01, 0x0c, 0x86, 0x75, 0x00, 0x3f,
-                              0x73, 0x74, 0x73, 0x74, 0x73, 0x74,
-                              0x01, 0x0c, 0x86);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETCYC,
+                                    0x73, 0x74, 0x73, 0x74, 0x73, 0x74,
+                                    0x01, 0x0c, 0x86, 0x75, 0x00, 0x3f,
+                                    0x73, 0x74, 0x73, 0x74, 0x73, 0x74,
+                                    0x01, 0x0c, 0x86);
 
        /* 5.19.5 SETVCOM: Set VCOM voltage (B6h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETVCOM,
-                              0x6e, 0x6e);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETVCOM,
+                                    0x6e, 0x6e);
 
        /* 5.19.19 SETGIP0: Set GIP Option0 (D3h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP0,
-                              0x00, 0x00, 0x07, 0x07, 0x40, 0x07,
-                              0x0c, 0x00, 0x08, 0x10, 0x08, 0x00,
-                              0x08, 0x54, 0x15, 0x0a, 0x05, 0x0a,
-                              0x02, 0x15, 0x06, 0x05, 0x06, 0x47,
-                              0x44, 0x0a, 0x0a, 0x4b, 0x10, 0x07,
-                              0x07, 0x0c, 0x40);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP0,
+                                    0x00, 0x00, 0x07, 0x07, 0x40, 0x07,
+                                    0x0c, 0x00, 0x08, 0x10, 0x08, 0x00,
+                                    0x08, 0x54, 0x15, 0x0a, 0x05, 0x0a,
+                                    0x02, 0x15, 0x06, 0x05, 0x06, 0x47,
+                                    0x44, 0x0a, 0x0a, 0x4b, 0x10, 0x07,
+                                    0x07, 0x0c, 0x40);
 
        /* 5.19.20 Set GIP Option1 (D5h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP1,
-                              0x1c, 0x1c, 0x1d, 0x1d, 0x00, 0x01,
-                              0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
-                              0x08, 0x09, 0x0a, 0x0b, 0x24, 0x25,
-                              0x18, 0x18, 0x26, 0x27, 0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-                              0x18, 0x18, 0x20, 0x21, 0x18, 0x18,
-                              0x18, 0x18);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP1,
+                                    0x1c, 0x1c, 0x1d, 0x1d, 0x00, 0x01,
+                                    0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+                                    0x08, 0x09, 0x0a, 0x0b, 0x24, 0x25,
+                                    0x18, 0x18, 0x26, 0x27, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+                                    0x18, 0x18, 0x20, 0x21, 0x18, 0x18,
+                                    0x18, 0x18);
 
        /* 5.19.21 Set GIP Option2 (D6h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGIP2,
-                              0x1c, 0x1c, 0x1d, 0x1d, 0x07, 0x06,
-                              0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
-                              0x0b, 0x0a, 0x09, 0x08, 0x21, 0x20,
-                              0x18, 0x18, 0x27, 0x26, 0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-                              0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-                              0x18, 0x18, 0x25, 0x24, 0x18, 0x18,
-                              0x18, 0x18);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGIP2,
+                                    0x1c, 0x1c, 0x1d, 0x1d, 0x07, 0x06,
+                                    0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
+                                    0x0b, 0x0a, 0x09, 0x08, 0x21, 0x20,
+                                    0x18, 0x18, 0x27, 0x26, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+                                    0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
+                                    0x18, 0x18, 0x25, 0x24, 0x18, 0x18,
+                                    0x18, 0x18);
 
        /* 5.19.25 SETGAMMA: Set gamma curve related setting (E0h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETGAMMA,
-                              0x00, 0x0a, 0x15, 0x1b, 0x1e, 0x21,
-                              0x24, 0x22, 0x47, 0x56, 0x65, 0x66,
-                              0x6e, 0x82, 0x88, 0x8b, 0x9a, 0x9d,
-                              0x98, 0xa8, 0xb9, 0x5d, 0x5c, 0x61,
-                              0x66, 0x6a, 0x6f, 0x7f, 0x7f, 0x00,
-                              0x0a, 0x15, 0x1b, 0x1e, 0x21, 0x24,
-                              0x22, 0x47, 0x56, 0x65, 0x65, 0x6e,
-                              0x81, 0x87, 0x8b, 0x98, 0x9d, 0x99,
-                              0xa8, 0xba, 0x5d, 0x5d, 0x62, 0x67,
-                              0x6b, 0x72, 0x7f, 0x7f);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETGAMMA,
+                                    0x00, 0x0a, 0x15, 0x1b, 0x1e, 0x21,
+                                    0x24, 0x22, 0x47, 0x56, 0x65, 0x66,
+                                    0x6e, 0x82, 0x88, 0x8b, 0x9a, 0x9d,
+                                    0x98, 0xa8, 0xb9, 0x5d, 0x5c, 0x61,
+                                    0x66, 0x6a, 0x6f, 0x7f, 0x7f, 0x00,
+                                    0x0a, 0x15, 0x1b, 0x1e, 0x21, 0x24,
+                                    0x22, 0x47, 0x56, 0x65, 0x65, 0x6e,
+                                    0x81, 0x87, 0x8b, 0x98, 0x9d, 0x99,
+                                    0xa8, 0xba, 0x5d, 0x5d, 0x62, 0x67,
+                                    0x6b, 0x72, 0x7f, 0x7f);
 
        /* Unknown command, not listed in the HX8394-F datasheet (C0H) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN1,
-                              0x1f, 0x73);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN1,
+                                    0x1f, 0x73);
 
        /* Set CABC control (C9h)*/
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETCABC,
-                              0x76, 0x00, 0x30);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETCABC,
+                                    0x76, 0x00, 0x30);
 
        /* 5.19.17 SETPANEL (CCh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPANEL,
-                              0x0b);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPANEL,
+                                    0x0b);
 
        /* Unknown command, not listed in the HX8394-F datasheet (D4h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN3,
-                              0x02);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN3,
+                                    0x02);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x02);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x02);
 
        /* 5.19.11 Set register bank (D8h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN4,
-                              0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-                              0xff, 0xff, 0xff, 0xff, 0xff, 0xff);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN4,
+                                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+                                    0xff, 0xff, 0xff, 0xff, 0xff, 0xff);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x00);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x01);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x01);
 
        /* 5.19.2 SETPOWER: Set power (B1h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETPOWER,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETPOWER,
+                                    0x00);
 
        /* 5.19.11 Set register bank (BDh) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_SETREGBANK,
-                              0x00);
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_SETREGBANK,
+                                    0x00);
 
        /* Unknown command, not listed in the HX8394-F datasheet (C6h) */
-       mipi_dsi_dcs_write_seq(dsi, HX8394_CMD_UNKNOWN2,
-                              0xed);
-
-       return 0;
+       mipi_dsi_dcs_write_seq_multi(dsi_ctx, HX8394_CMD_UNKNOWN2,
+                                    0xed);
 }
 
 static const struct drm_display_mode mchp_ac40t08a_mode = {
@@ -493,35 +481,31 @@ static int hx8394_enable(struct drm_panel *panel)
 {
        struct hx8394 *ctx = panel_to_hx8394(panel);
        struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+       struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
        int ret;
 
-       ret = ctx->desc->init_sequence(ctx);
-       if (ret) {
-               dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
-               return ret;
-       }
+       ctx->desc->init_sequence(&dsi_ctx);
 
-       ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-       if (ret) {
-               dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
-               return ret;
-       }
+       mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
 
+       if (dsi_ctx.accum_err)
+               return dsi_ctx.accum_err;
        /* Panel is operational 120 msec after reset */
        msleep(120);
 
-       ret = mipi_dsi_dcs_set_display_on(dsi);
-       if (ret) {
-               dev_err(ctx->dev, "Failed to turn on the display: %d\n", ret);
+       mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+       if (dsi_ctx.accum_err)
                goto sleep_in;
-       }
 
        return 0;
 
 sleep_in:
+       ret = dsi_ctx.accum_err;
+       dsi_ctx.accum_err = 0;
+
        /* This will probably fail, but let's try orderly power off anyway. */
-       if (!mipi_dsi_dcs_enter_sleep_mode(dsi))
-               msleep(50);
+       mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+       mipi_dsi_msleep(&dsi_ctx, 50);
 
        return ret;
 }
@@ -530,17 +514,12 @@ static int hx8394_disable(struct drm_panel *panel)
 {
        struct hx8394 *ctx = panel_to_hx8394(panel);
        struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
-       int ret;
-
-       ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-       if (ret) {
-               dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
-               return ret;
-       }
+       struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-       msleep(50); /* about 3 frames */
+       mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+       mipi_dsi_msleep(&dsi_ctx, 50); /* about 3 frames */
 
-       return 0;
+       return dsi_ctx.accum_err;
 }
 
 static int hx8394_unprepare(struct drm_panel *panel)
-- 
2.49.0

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