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Message-ID: <20240813062912.467280-3-tejasvipin76@gmail.com>
Date: Tue, 13 Aug 2024 11:59:12 +0530
From: Tejas Vipin <tejasvipin76@...il.com>
To: maarten.lankhorst@...ux.intel.com,
mripard@...nel.org,
tzimmermann@...e.de,
neil.armstrong@...aro.org,
quic_jesszhan@...cinc.com
Cc: dianders@...omium.org,
airlied@...il.com,
daniel@...ll.ch,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Tejas Vipin <tejasvipin76@...il.com>
Subject: [PATCH v2 2/2] drm/panel: jdi-fhd-r63452: transition to mipi_dsi wrapped functions
Changes the jdi-fhd-r63452 panel to use multi style functions for
improved error handling.
Signed-off-by: Tejas Vipin <tejasvipin76@...il.com>
---
drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c | 150 ++++++-------------
1 file changed, 49 insertions(+), 101 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
index 483dc88d16d8..9ec567b4a8e2 100644
--- a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
+++ b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
@@ -41,142 +41,90 @@ static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
- struct device *dev = &dsi->dev;
- int ret;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
- mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
- mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
- mipi_dsi_generic_write_seq(dsi, 0xec,
- 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
- 0x13, 0x15, 0x68, 0x0b, 0xb5);
- mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
-
- ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
- if (ret < 0) {
- dev_err(dev, "Failed to set tear on: %d\n", ret);
- return ret;
- }
-
- mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,
+ 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
+ 0x13, 0x15, 0x68, 0x0b, 0xb5);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
- ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
- if (ret < 0) {
- dev_err(dev, "Failed to set pixel format: %d\n", ret);
- return ret;
- }
-
- ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
- if (ret < 0) {
- dev_err(dev, "Failed to set column address: %d\n", ret);
- return ret;
- }
+ mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
- ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f);
- if (ret < 0) {
- dev_err(dev, "Failed to set page address: %d\n", ret);
- return ret;
- }
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
- ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
- if (ret < 0) {
- dev_err(dev, "Failed to set tear scanline: %d\n", ret);
- return ret;
- }
+ mipi_dsi_dcs_set_pixel_format_multi(&dsi_ctx, 0x77);
+ mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x0437);
+ mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x077f);
+ mipi_dsi_dcs_set_tear_scanline_multi(&dsi_ctx, 0x0000);
+ mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00ff);
- ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
- if (ret < 0) {
- dev_err(dev, "Failed to set display brightness: %d\n", ret);
- return ret;
- }
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);
- mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
- mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
- mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
- mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
+ mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+ mipi_dsi_msleep(&dsi_ctx, 20);
+ mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+ mipi_dsi_msleep(&dsi_ctx, 80);
- ret = mipi_dsi_dcs_set_display_on(dsi);
- if (ret < 0) {
- dev_err(dev, "Failed to set display on: %d\n", ret);
- return ret;
- }
- msleep(20);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xc8, 0x11);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
- ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
- if (ret < 0) {
- dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
- return ret;
- }
- msleep(80);
-
- mipi_dsi_generic_write_seq(dsi, 0xb0, 0x04);
- mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
- mipi_dsi_generic_write_seq(dsi, 0xc8, 0x11);
- mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
-
- return 0;
+ return dsi_ctx.accum_err;
}
-static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
+static void jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
- struct device *dev = &dsi->dev;
- int ret;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
- mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
- mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
- mipi_dsi_generic_write_seq(dsi, 0xec,
- 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
- 0x13, 0x15, 0x68, 0x0b, 0x95);
- mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
-
- ret = mipi_dsi_dcs_set_display_off(dsi);
- if (ret < 0) {
- dev_err(dev, "Failed to set display off: %d\n", ret);
- return ret;
- }
- usleep_range(2000, 3000);
-
- ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
- if (ret < 0) {
- dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
- return ret;
- }
- msleep(120);
-
- return 0;
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,
+ 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
+ 0x13, 0x15, 0x68, 0x0b, 0x95);
+ mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
+
+ mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+ if (!dsi_ctx.accum_err)
+ usleep_range(2000, 3000);
+ mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+ mipi_dsi_msleep(&dsi_ctx, 120);
}
static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
{
struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
- struct device *dev = &ctx->dsi->dev;
int ret;
jdi_fhd_r63452_reset(ctx);
ret = jdi_fhd_r63452_on(ctx);
- if (ret < 0) {
- dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ if (ret < 0)
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
- return ret;
- }
- return 0;
+ return ret;
}
static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
{
struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
- struct device *dev = &ctx->dsi->dev;
- int ret;
- ret = jdi_fhd_r63452_off(ctx);
- if (ret < 0)
- dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
+ /*
+ * NOTE: We don't return an error here as while the panel won't have
+ * been cleanly turned off at least we've asserted the reset signal
+ * so it should be safe to power it back on again later
+ */
+ jdi_fhd_r63452_off(ctx);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
--
2.46.0
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