diff mbox series

[v4] drm/panel/synaptics-r63353: Use _multi variants

Message ID 20250318-synaptic-expt-v1-1-fa3831a7d883@redhat.com (mailing list archive)
State New
Headers show
Series [v4] drm/panel/synaptics-r63353: Use _multi variants | expand

Commit Message

Anusha Srivatsa March 18, 2025, 2:37 p.m. UTC 
Move away from using deprecated API and use _multi
variants if available. Use mipi_dsi_msleep()
and mipi_dsi_usleep_range() instead of msleep()
and usleep_range() respectively.

Used Coccinelle to find the _multi variant APIs,
replacing mpi_dsi_msleep() where necessary and for returning
dsi_ctx.accum_err in these functions. Manually handled the
reset step before returning from r63353_panel_activate()

v2: Do not skip the reset in case of error during
panel activate (Dmitry)
- Convert all usleep_range()

v3: mipi_dsi_usleep_range() is to be used only when in
between _multi commands(Doug)
- Check for error once in the end while using _multi
variants (Doug)

v4: Change return type of r63353_panel_deactivate() to void (Doug)

@rule_1@
identifier dsi_var;
identifier r;
identifier func;
type t;
position p;
expression dsi_device;
expression list es;
@@
t func(...) {
...
struct mipi_dsi_device *dsi_var = dsi_device;
+struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi_var };
<+...
(
-r = mipi_dsi_dcs_nop(dsi_var)@p;
+mipi_dsi_dcs_nop_multi(&dsi_ctx);
|
-r = mipi_dsi_dcs_exit_sleep_mode(dsi_var)@p;
+mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
|
-r = mipi_dsi_dcs_enter_sleep_mode(dsi_var)@p;
+mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
|
-r = mipi_dsi_dcs_write_buffer(dsi_var,es)@p;
+mipi_dsi_dcs_write_buffer_multi(&dsi_ctx,es);
|
-r = mipi_dsi_dcs_set_display_off(dsi_var,es)@p;
+mipi_dsi_dcs_set_display_off_multi(&dsi_ctx,es);
|
-r = mipi_dsi_compression_mode_ext(dsi_var,es)@p;
+mipi_dsi_compression_mode_ext_multi(&dsi_ctx,es);
|
-r = mipi_dsi_compression_mode(dsi_var,es)@p;
+mipi_dsi_compression_mode_multi(&dsi_ctx,es);
|
-r = mipi_dsi_picture_parameter_set(dsi_var,es)@p;
+mipi_dsi_picture_parameter_set_multi(&dsi_ctx,es);
|
-r = mipi_dsi_dcs_set_display_on(dsi_var,es)@p;
+mipi_dsi_dcs_set_display_on_multi(&dsi_ctx,es);
|
-r = mipi_dsi_dcs_set_tear_on(dsi_var)@p;
+mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx);
|
-r = mipi_dsi_turn_on_peripheral(dsi_var)@p;
+mipi_dsi_turn_on_peripheral_multi(&dsi_ctx);
|
-r = mipi_dsi_dcs_soft_reset(dsi_var)@p;
+mipi_dsi_dcs_soft_reset_multi(&dsi_ctx);
|
-r = mipi_dsi_dcs_set_display_brightness(dsi_var,es)@p;
+mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx,es);
|
-r = mipi_dsi_dcs_set_pixel_format(dsi_var,es)@p;
+mipi_dsi_dcs_set_pixel_format_multi(&dsi_ctx,es);
|
-r = mipi_dsi_dcs_set_column_address(dsi_var,es)@p;
+mipi_dsi_dcs_set_column_address_multi(&dsi_ctx,es);
|
-r = mipi_dsi_dcs_set_page_address(dsi_var,es)@p;
+mipi_dsi_dcs_set_page_address_multi(&dsi_ctx,es);
|
-r = mipi_dsi_dcs_set_tear_scanline(dsi_var,es)@p;
+mipi_dsi_dcs_set_tear_scanline_multi(&dsi_ctx,es);
)
-if(r < 0) {
-...
-}
...+>
}

@rule_2@
identifier dsi_var;
identifier r;
identifier func;
type t;
position p;
expression dsi_device;
expression list es;
@@
t func(...) {
...
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi_var };
<+...
(
-r = msleep(es)@p;
+r = mipi_dsi_msleep(&dsi_ctx,es);
|
-msleep(es)@p;
+mipi_dsi_msleep(&dsi_ctx,es);
|
-r = usleep_range(es)@p;
+r = mipi_dsi_usleep_range(&dsi_ctx,es);
|
-usleep_range(es)@p;
+mipi_dsi_usleep_range(&dsi_ctx,es);
)
...+>
}

@rule_3@
identifier dsi_var;
identifier func;
type t;
position p;
expression list es;
@@
t func(...) {
...
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi_var };
...
-return 0;
+return dsi_ctx.accum_err;
}

Cc: Maxime Ripard <mripard@kernel.org>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Tejas Vipin <tejasvipin76@gmail.com>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>
---
Previous attempt for this change was addressed in:[1]
The series did not handle returns properly and still
used msleep() and usleep_range() API.
It also collided with an Tejas's similar efforts.
   
Will be sending the patches per driver instead of
major haul of changes.
    
Following [2] for reference.
    
[1] -> https://patchwork.freedesktop.org/series/144824/
[2] -> https://lore.kernel.org/dri-devel/20250220045721.145905-1-tejasvipin76@gmail.com/#iZ31drivers:gpu:drm:panel:panel-sony-td4353-jdi.c
---
Changes in v4:
- Change return type for r63353_panel_deactivate() from int to void
- Link to v3: https://lore.kernel.org/all/20250314-b4-mipi-synaptic-v1-1-a64ccb5e5c66@redhat.com/
  
Changes in v3:
- Modify the script to handle returns and msleeps ()
- handle reset in case of error properly
   
- Link to v2: https://lore.kernel.org/all/20250310-mipi-synaptic-1-v2-1-20ee4397c670@redhat.com/

Changes in v2:
- Handle the reset case properly
- Handle msleep() and  usleep_range()
  
- Link to v1: https://lore.kernel.org/r/20250305-mipi-synaptic-1-v1-1-92017cd19ef6@redhat.com
---
 drivers/gpu/drm/panel/panel-synaptics-r63353.c | 68 +++++++-------------------
 1 file changed, 19 insertions(+), 49 deletions(-)


---
base-commit: dbe74119ff71c00f2d863a32f72aab2d15e61c39
change-id: 20250318-synaptic-expt-ad1879d7a922

Best regards,
diff mbox series

Patch

diff --git a/drivers/gpu/drm/panel/panel-synaptics-r63353.c b/drivers/gpu/drm/panel/panel-synaptics-r63353.c
index 17349825543fe6a117bbfd9cb92a564ce433d13a..b148e6cba9bd1184a8c3e9e264e31536ad78ce28 100644
--- a/drivers/gpu/drm/panel/panel-synaptics-r63353.c
+++ b/drivers/gpu/drm/panel/panel-synaptics-r63353.c
@@ -106,53 +106,34 @@  static int r63353_panel_power_off(struct r63353_panel *rpanel)
 static int r63353_panel_activate(struct r63353_panel *rpanel)
 {
 	struct mipi_dsi_device *dsi = rpanel->dsi;
-	struct device *dev = &dsi->dev;
-	int i, ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+	int i;
 
-	ret = mipi_dsi_dcs_soft_reset(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to do Software Reset (%d)\n", ret);
-		goto fail;
-	}
+	mipi_dsi_dcs_soft_reset_multi(&dsi_ctx);
 
-	usleep_range(15000, 17000);
+	mipi_dsi_usleep_range(&dsi_ctx, 15000, 17000);
 
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
-		goto fail;
-	}
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
 
 	for (i = 0; i < rpanel->pdata->init_length; i++) {
 		const struct r63353_instr *instr = &rpanel->pdata->init[i];
 
-		ret = mipi_dsi_dcs_write_buffer(dsi, instr->data, instr->len);
-		if (ret < 0)
-			goto fail;
+		mipi_dsi_dcs_write_buffer_multi(&dsi_ctx, instr->data,
+						instr->len);
 	}
 
-	msleep(120);
-
-	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
-		goto fail;
-	}
+	mipi_dsi_msleep(&dsi_ctx, 120);
 
-	usleep_range(5000, 10000);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
 
-	ret = mipi_dsi_dcs_set_display_on(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display ON (%d)\n", ret);
-		goto fail;
-	}
+	mipi_dsi_usleep_range(&dsi_ctx, 5000, 10000);
 
-	return 0;
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
 
-fail:
-	gpiod_set_value(rpanel->reset_gpio, 0);
+	if (dsi_ctx.accum_err)
+		gpiod_set_value(rpanel->reset_gpio, 0);
 
-	return ret;
+	return dsi_ctx.accum_err;
 }
 
 static int r63353_panel_prepare(struct drm_panel *panel)
@@ -178,27 +159,16 @@  static int r63353_panel_prepare(struct drm_panel *panel)
 	return 0;
 }
 
-static int r63353_panel_deactivate(struct r63353_panel *rpanel)
+static void r63353_panel_deactivate(struct r63353_panel *rpanel)
 {
 	struct mipi_dsi_device *dsi = rpanel->dsi;
-	struct device *dev = &dsi->dev;
-	int ret;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 
-	ret = mipi_dsi_dcs_set_display_off(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set display OFF (%d)\n", ret);
-		return ret;
-	}
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
 
-	usleep_range(5000, 10000);
+	mipi_dsi_usleep_range(&dsi_ctx, 5000, 10000);
 
-	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
-		return ret;
-	}
-
-	return 0;
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
 }
 
 static int r63353_panel_unprepare(struct drm_panel *panel)