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Message-Id: <1521018736-20980-1-git-send-email-hl@rock-chips.com>
Date: Wed, 14 Mar 2018 17:12:14 +0800
From: Lin Huang <hl@...k-chips.com>
To: thierry.reding@...il.com
Cc: emil.l.velikov@...il.com, briannorris@...omium.org,
robh+dt@...nel.org, seanpaul@...omium.org, airlied@...ux.ie,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
huang lin <hl@...k-chips.com>
Subject: [PATCH v4 1/3] drm/panel: refactor INNOLUX P079ZCA panel driver
From: huang lin <hl@...k-chips.com>
Refactor Innolux P079ZCA panel driver, let it support
multi panel.
Change-Id: If89be5e56dba8cb498e2d50c1bbeb0e8016123a2
Signed-off-by: Lin Huang <hl@...k-chips.com>
---
Changes in v2:
- Change regulator property name to meet the panel datasheet
Changes in v3:
- this patch only refactor P079ZCA panel to support multi panel, support P097PFG panel in another patch
Changes in v4:
- Modify the patch which suggest by Thierry
drivers/gpu/drm/panel/panel-innolux-p079zca.c | 142 ++++++++++++++++++--------
1 file changed, 101 insertions(+), 41 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index 57df39b..2075a9d 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -20,12 +20,28 @@
#include <video/mipi_display.h>
+struct panel_desc {
+ const struct drm_display_mode *modes;
+ unsigned int bpc;
+ struct {
+ unsigned int width;
+ unsigned int height;
+ } size;
+
+ unsigned long flags;
+ enum mipi_dsi_pixel_format format;
+ unsigned int lanes;
+};
+
struct innolux_panel {
struct drm_panel base;
struct mipi_dsi_device *link;
+ const struct panel_desc *desc;
struct backlight_device *backlight;
- struct regulator *supply;
+ struct regulator *vddi;
+ struct regulator *avdd;
+ struct regulator *avee;
struct gpio_desc *enable_gpio;
bool prepared;
@@ -77,9 +93,9 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
/* T8: 80ms - 1000ms */
msleep(80);
- err = regulator_disable(innolux->supply);
- if (err < 0)
- return err;
+ regulator_disable(innolux->avee);
+ regulator_disable(innolux->avdd);
+ regulator_disable(innolux->vddi);
innolux->prepared = false;
@@ -89,17 +105,25 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
static int innolux_panel_prepare(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
- int err, regulator_err;
+ int err;
if (innolux->prepared)
return 0;
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
- err = regulator_enable(innolux->supply);
+ err = regulator_enable(innolux->vddi);
if (err < 0)
return err;
+ err = regulator_enable(innolux->avdd);
+ if (err < 0)
+ goto disable_vddi;
+
+ err = regulator_enable(innolux->avee);
+ if (err < 0)
+ goto disable_avdd;
+
/* T2: 15ms - 1000ms */
usleep_range(15000, 16000);
@@ -133,12 +157,13 @@ static int innolux_panel_prepare(struct drm_panel *panel)
return 0;
poweroff:
- regulator_err = regulator_disable(innolux->supply);
- if (regulator_err)
- DRM_DEV_ERROR(panel->dev, "failed to disable regulator: %d\n",
- regulator_err);
-
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
+ regulator_disable(innolux->avee);
+disable_avdd:
+ regulator_disable(innolux->avdd);
+disable_vddi:
+ regulator_disable(innolux->vddi);
+
return err;
}
@@ -162,7 +187,7 @@ static int innolux_panel_enable(struct drm_panel *panel)
return 0;
}
-static const struct drm_display_mode default_mode = {
+static const struct drm_display_mode innolux_p079zca_mode = {
.clock = 56900,
.hdisplay = 768,
.hsync_start = 768 + 40,
@@ -175,15 +200,29 @@ static const struct drm_display_mode default_mode = {
.vrefresh = 60,
};
+static const struct panel_desc innolux_p079zca_panel_desc = {
+ .modes = &innolux_p079zca_mode,
+ .bpc = 8,
+ .size = {
+ .width = 120,
+ .height = 160,
+ },
+ .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+ MIPI_DSI_MODE_LPM,
+ .format = MIPI_DSI_FMT_RGB888,
+ .lanes = 4,
+};
+
static int innolux_panel_get_modes(struct drm_panel *panel)
{
struct drm_display_mode *mode;
+ struct innolux_panel *innolux = to_innolux_panel(panel);
+ const struct drm_display_mode *m = innolux->desc->modes;
- mode = drm_mode_duplicate(panel->drm, &default_mode);
+ mode = drm_mode_duplicate(panel->drm, m);
if (!mode) {
DRM_DEV_ERROR(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
- default_mode.hdisplay, default_mode.vdisplay,
- default_mode.vrefresh);
+ m->hdisplay, m->vdisplay, m->vrefresh);
return -ENOMEM;
}
@@ -191,9 +230,11 @@ static int innolux_panel_get_modes(struct drm_panel *panel)
drm_mode_probed_add(panel->connector, mode);
- panel->connector->display_info.width_mm = 120;
- panel->connector->display_info.height_mm = 160;
- panel->connector->display_info.bpc = 8;
+ panel->connector->display_info.width_mm =
+ innolux->desc->size.width;
+ panel->connector->display_info.height_mm =
+ innolux->desc->size.height;
+ panel->connector->display_info.bpc = innolux->desc->bpc;
return 1;
}
@@ -207,19 +248,28 @@ static const struct drm_panel_funcs innolux_panel_funcs = {
};
static const struct of_device_id innolux_of_match[] = {
- { .compatible = "innolux,p079zca", },
+ { .compatible = "innolux,p079zca",
+ .data = &innolux_p079zca_panel_desc
+ },
{ }
};
MODULE_DEVICE_TABLE(of, innolux_of_match);
-static int innolux_panel_add(struct innolux_panel *innolux)
+static int innolux_panel_add(struct mipi_dsi_device *dsi,
+ const struct panel_desc *desc)
{
- struct device *dev = &innolux->link->dev;
+ struct innolux_panel *innolux;
+ struct device *dev = &dsi->dev;
int err;
- innolux->supply = devm_regulator_get(dev, "power");
- if (IS_ERR(innolux->supply))
- return PTR_ERR(innolux->supply);
+ innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);
+ if (!innolux)
+ return -ENOMEM;
+
+ innolux->desc = desc;
+ innolux->vddi = devm_regulator_get(dev, "power");
+ innolux->avdd = devm_regulator_get(dev, "avdd");
+ innolux->avee = devm_regulator_get(dev, "avee");
innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
GPIOD_OUT_HIGH);
@@ -236,9 +286,21 @@ static int innolux_panel_add(struct innolux_panel *innolux)
drm_panel_init(&innolux->base);
innolux->base.funcs = &innolux_panel_funcs;
- innolux->base.dev = &innolux->link->dev;
+ innolux->base.dev = dev;
+
+ err = drm_panel_add(&innolux->base);
+ if (err < 0)
+ goto put_backlight;
+
+ dev_set_drvdata(dev, innolux);
+ innolux->link = dsi;
+
+ return 0;
+
+put_backlight:
+ put_device(&innolux->backlight->dev);
- return drm_panel_add(&innolux->base);
+ return err;
}
static void innolux_panel_del(struct innolux_panel *innolux)
@@ -249,28 +311,25 @@ static void innolux_panel_del(struct innolux_panel *innolux)
static int innolux_panel_probe(struct mipi_dsi_device *dsi)
{
- struct innolux_panel *innolux;
- int err;
- dsi->lanes = 4;
- dsi->format = MIPI_DSI_FMT_RGB888;
- dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
- MIPI_DSI_MODE_LPM;
-
- innolux = devm_kzalloc(&dsi->dev, sizeof(*innolux), GFP_KERNEL);
- if (!innolux)
- return -ENOMEM;
+ const struct panel_desc *desc;
+ const struct of_device_id *id;
+ int err;
- mipi_dsi_set_drvdata(dsi, innolux);
+ id = of_match_node(innolux_of_match, dsi->dev.of_node);
+ if (!id)
+ return -ENODEV;
- innolux->link = dsi;
+ desc = id->data;
+ dsi->mode_flags = desc->flags;
+ dsi->format = desc->format;
+ dsi->lanes = desc->lanes;
- err = innolux_panel_add(innolux);
+ err = innolux_panel_add(dsi, desc);
if (err < 0)
return err;
- err = mipi_dsi_attach(dsi);
- return err;
+ return mipi_dsi_attach(dsi);
}
static int innolux_panel_remove(struct mipi_dsi_device *dsi)
@@ -318,5 +377,6 @@ static struct mipi_dsi_driver innolux_panel_driver = {
module_mipi_dsi_driver(innolux_panel_driver);
MODULE_AUTHOR("Chris Zhong <zyw@...k-chips.com>");
+MODULE_AUTHOR("Lin Huang <hl@...k-chips.com>");
MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
MODULE_LICENSE("GPL v2");
--
2.7.4
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