[PATCH] drm/panel: novatek-nt36672a: Inline command sequences

From: Chintan Patel

Date: Wed Apr 15 2026 - 19:56:59 EST


Inline the command sequences and remove the nt36672a_send_cmds()
helper.

Small wrapper helpers around mipi_dsi_dcs_write_buffer_multi()
are discouraged as they add indirection without improving
readability and can increase code size.

Signed-off-by: Chintan Patel <chintanlike@xxxxxxxxx>
---
.../gpu/drm/panel/panel-novatek-nt36672a.c | 36 +++++++++----------
1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-novatek-nt36672a.c b/drivers/gpu/drm/panel/panel-novatek-nt36672a.c
index 7e8b5e059575..2f75200806dd 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt36672a.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt36672a.c
@@ -79,19 +79,6 @@ static inline struct nt36672a_panel *to_nt36672a_panel(struct drm_panel *panel)
return container_of(panel, struct nt36672a_panel, base);
}

-static void nt36672a_send_cmds(struct mipi_dsi_multi_context *dsi_ctx,
- const struct nt36672a_panel_cmd *cmds, int num)
-{
- unsigned int i;
-
- for (i = 0; i < num; i++) {
- const struct nt36672a_panel_cmd *cmd = &cmds[i];
-
- /* cmd->data[0] is the DCS command, cmd->data[1] is the parameter */
- mipi_dsi_dcs_write_buffer_multi(dsi_ctx, cmd->data, sizeof(cmd->data));
- }
-}
-
static void nt36672a_panel_power_off(struct drm_panel *panel)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
@@ -108,10 +95,14 @@ static int nt36672a_panel_unprepare(struct drm_panel *panel)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
struct mipi_dsi_multi_context dsi_ctx = { .dsi = pinfo->link };
+ unsigned int i;

/* send off cmds */
- nt36672a_send_cmds(&dsi_ctx, pinfo->desc->off_cmds,
- pinfo->desc->num_off_cmds);
+ for (i = 0; i < pinfo->desc->num_off_cmds; i++) {
+ const struct nt36672a_panel_cmd *cmd = &pinfo->desc->off_cmds[i];
+
+ mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, (const u8 *)cmd->data, sizeof(cmd->data));
+ }

/* Reset error to continue with display off even if send_cmds failed */
dsi_ctx.accum_err = 0;
@@ -158,12 +149,16 @@ static int nt36672a_panel_prepare(struct drm_panel *panel)
{
struct nt36672a_panel *pinfo = to_nt36672a_panel(panel);
struct mipi_dsi_multi_context dsi_ctx = { .dsi = pinfo->link };
+ unsigned int i;

dsi_ctx.accum_err = nt36672a_panel_power_on(pinfo);

/* send first part of init cmds */
- nt36672a_send_cmds(&dsi_ctx, pinfo->desc->on_cmds_1,
- pinfo->desc->num_on_cmds_1);
+ for (i = 0; i < pinfo->desc->num_on_cmds_1; i++) {
+ const struct nt36672a_panel_cmd *cmd = &pinfo->desc->on_cmds_1[i];
+
+ mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, (const u8 *)cmd->data, sizeof(cmd->data));
+ }

mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);

@@ -173,8 +168,11 @@ static int nt36672a_panel_prepare(struct drm_panel *panel)
mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);

/* Send rest of the init cmds */
- nt36672a_send_cmds(&dsi_ctx, pinfo->desc->on_cmds_2,
- pinfo->desc->num_on_cmds_2);
+ for (i = 0; i < pinfo->desc->num_on_cmds_2; i++) {
+ const struct nt36672a_panel_cmd *cmd = &pinfo->desc->on_cmds_2[i];
+
+ mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, (const u8 *)cmd->data, sizeof(cmd->data));
+ }

mipi_dsi_msleep(&dsi_ctx, 120);

--
2.43.0