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linux/drivers/gpu/drm/panel/panel-innolux-p079zca.c
Rob Herring 722d4f06e5 drm: Explicitly include correct DT includes 
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714174545.4056287-1-robh@kernel.org
2023-07-21 09:12:43 +02:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
*/
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <video/mipi_display.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
struct panel_init_cmd {
size_t len;
const char *data;
};
#define _INIT_CMD(...) { \
.len = sizeof((char[]){__VA_ARGS__}), \
.data = (char[]){__VA_ARGS__} }
struct panel_desc {
const struct drm_display_mode *mode;
unsigned int bpc;
struct {
unsigned int width;
unsigned int height;
} size;
unsigned long flags;
enum mipi_dsi_pixel_format format;
const struct panel_init_cmd *init_cmds;
unsigned int lanes;
const char * const *supply_names;
unsigned int num_supplies;
unsigned int sleep_mode_delay;
unsigned int power_down_delay;
};
struct innolux_panel {
struct drm_panel base;
struct mipi_dsi_device *link;
const struct panel_desc *desc;
struct regulator_bulk_data *supplies;
struct gpio_desc *enable_gpio;
bool prepared;
bool enabled;
};
static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
{
return container_of(panel, struct innolux_panel, base);
}
static int innolux_panel_disable(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
if (!innolux->enabled)
return 0;
innolux->enabled = false;
return 0;
}
static int innolux_panel_unprepare(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
int err;
if (!innolux->prepared)
return 0;
err = mipi_dsi_dcs_set_display_off(innolux->link);
if (err < 0)
dev_err(panel->dev, "failed to set display off: %d\n", err);
err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
if (err < 0) {
dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
return err;
}
if (innolux->desc->sleep_mode_delay)
msleep(innolux->desc->sleep_mode_delay);
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
if (innolux->desc->power_down_delay)
msleep(innolux->desc->power_down_delay);
err = regulator_bulk_disable(innolux->desc->num_supplies,
innolux->supplies);
if (err < 0)
return err;
innolux->prepared = false;
return 0;
}
static int innolux_panel_prepare(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
int err;
if (innolux->prepared)
return 0;
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
err = regulator_bulk_enable(innolux->desc->num_supplies,
innolux->supplies);
if (err < 0)
return err;
/* p079zca: t2 (20ms), p097pfg: t4 (15ms) */
usleep_range(20000, 21000);
gpiod_set_value_cansleep(innolux->enable_gpio, 1);
/* p079zca: t4, p097pfg: t5 */
usleep_range(20000, 21000);
if (innolux->desc->init_cmds) {
const struct panel_init_cmd *cmds =
innolux->desc->init_cmds;
unsigned int i;
for (i = 0; cmds[i].len != 0; i++) {
const struct panel_init_cmd *cmd = &cmds[i];
err = mipi_dsi_generic_write(innolux->link, cmd->data,
cmd->len);
if (err < 0) {
dev_err(panel->dev, "failed to write command %u\n", i);
goto poweroff;
}
/*
* Included by random guessing, because without this
* (or at least, some delay), the panel sometimes
* didn't appear to pick up the command sequence.
*/
err = mipi_dsi_dcs_nop(innolux->link);
if (err < 0) {
dev_err(panel->dev, "failed to send DCS nop: %d\n", err);
goto poweroff;
}
}
}
err = mipi_dsi_dcs_exit_sleep_mode(innolux->link);
if (err < 0) {
dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
goto poweroff;
}
/* T6: 120ms - 1000ms*/
msleep(120);
err = mipi_dsi_dcs_set_display_on(innolux->link);
if (err < 0) {
dev_err(panel->dev, "failed to set display on: %d\n", err);
goto poweroff;
}
/* T7: 5ms */
usleep_range(5000, 6000);
innolux->prepared = true;
return 0;
poweroff:
gpiod_set_value_cansleep(innolux->enable_gpio, 0);
regulator_bulk_disable(innolux->desc->num_supplies, innolux->supplies);
return err;
}
static int innolux_panel_enable(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
if (innolux->enabled)
return 0;
innolux->enabled = true;
return 0;
}
static const char * const innolux_p079zca_supply_names[] = {
"power",
};
static const struct drm_display_mode innolux_p079zca_mode = {
.clock = 56900,
.hdisplay = 768,
.hsync_start = 768 + 40,
.hsync_end = 768 + 40 + 40,
.htotal = 768 + 40 + 40 + 40,
.vdisplay = 1024,
.vsync_start = 1024 + 20,
.vsync_end = 1024 + 20 + 4,
.vtotal = 1024 + 20 + 4 + 20,
};
static const struct panel_desc innolux_p079zca_panel_desc = {
.mode = &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,
.supply_names = innolux_p079zca_supply_names,
.num_supplies = ARRAY_SIZE(innolux_p079zca_supply_names),
.power_down_delay = 80, /* T8: 80ms - 1000ms */
};
static const char * const innolux_p097pfg_supply_names[] = {
"avdd",
"avee",
};
static const struct drm_display_mode innolux_p097pfg_mode = {
.clock = 229000,
.hdisplay = 1536,
.hsync_start = 1536 + 100,
.hsync_end = 1536 + 100 + 24,
.htotal = 1536 + 100 + 24 + 100,
.vdisplay = 2048,
.vsync_start = 2048 + 100,
.vsync_end = 2048 + 100 + 2,
.vtotal = 2048 + 100 + 2 + 18,
};
/*
* Display manufacturer failed to provide init sequencing according to
* https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/+/892065/
* so the init sequence stems from a register dump of a working panel.
*/
static const struct panel_init_cmd innolux_p097pfg_init_cmds[] = {
/* page 0 */
_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x00),
_INIT_CMD(0xB1, 0xE8, 0x11),
_INIT_CMD(0xB2, 0x25, 0x02),
_INIT_CMD(0xB5, 0x08, 0x00),
_INIT_CMD(0xBC, 0x0F, 0x00),
_INIT_CMD(0xB8, 0x03, 0x06, 0x00, 0x00),
_INIT_CMD(0xBD, 0x01, 0x90, 0x14, 0x14),
_INIT_CMD(0x6F, 0x01),
_INIT_CMD(0xC0, 0x03),
_INIT_CMD(0x6F, 0x02),
_INIT_CMD(0xC1, 0x0D),
_INIT_CMD(0xD9, 0x01, 0x09, 0x70),
_INIT_CMD(0xC5, 0x12, 0x21, 0x00),
_INIT_CMD(0xBB, 0x93, 0x93),
/* page 1 */
_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x01),
_INIT_CMD(0xB3, 0x3C, 0x3C),
_INIT_CMD(0xB4, 0x0F, 0x0F),
_INIT_CMD(0xB9, 0x45, 0x45),
_INIT_CMD(0xBA, 0x14, 0x14),
_INIT_CMD(0xCA, 0x02),
_INIT_CMD(0xCE, 0x04),
_INIT_CMD(0xC3, 0x9B, 0x9B),
_INIT_CMD(0xD8, 0xC0, 0x03),
_INIT_CMD(0xBC, 0x82, 0x01),
_INIT_CMD(0xBD, 0x9E, 0x01),
/* page 2 */
_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x02),
_INIT_CMD(0xB0, 0x82),
_INIT_CMD(0xD1, 0x00, 0x00, 0x00, 0x3E, 0x00, 0x82, 0x00, 0xA5,
0x00, 0xC1, 0x00, 0xEA, 0x01, 0x0D, 0x01, 0x40),
_INIT_CMD(0xD2, 0x01, 0x6A, 0x01, 0xA8, 0x01, 0xDC, 0x02, 0x29,
0x02, 0x67, 0x02, 0x68, 0x02, 0xA8, 0x02, 0xF0),
_INIT_CMD(0xD3, 0x03, 0x19, 0x03, 0x49, 0x03, 0x67, 0x03, 0x8C,
0x03, 0xA6, 0x03, 0xC7, 0x03, 0xDE, 0x03, 0xEC),
_INIT_CMD(0xD4, 0x03, 0xFF, 0x03, 0xFF),
_INIT_CMD(0xE0, 0x00, 0x00, 0x00, 0x86, 0x00, 0xC5, 0x00, 0xE5,
0x00, 0xFF, 0x01, 0x26, 0x01, 0x45, 0x01, 0x75),
_INIT_CMD(0xE1, 0x01, 0x9C, 0x01, 0xD5, 0x02, 0x05, 0x02, 0x4D,
0x02, 0x86, 0x02, 0x87, 0x02, 0xC3, 0x03, 0x03),
_INIT_CMD(0xE2, 0x03, 0x2A, 0x03, 0x56, 0x03, 0x72, 0x03, 0x94,
0x03, 0xAC, 0x03, 0xCB, 0x03, 0xE0, 0x03, 0xED),
_INIT_CMD(0xE3, 0x03, 0xFF, 0x03, 0xFF),
/* page 3 */
_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x03),
_INIT_CMD(0xB0, 0x00, 0x00, 0x00, 0x00),
_INIT_CMD(0xB1, 0x00, 0x00, 0x00, 0x00),
_INIT_CMD(0xB2, 0x00, 0x00, 0x06, 0x04, 0x01, 0x40, 0x85),
_INIT_CMD(0xB3, 0x10, 0x07, 0xFC, 0x04, 0x01, 0x40, 0x80),
_INIT_CMD(0xB6, 0xF0, 0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x01,
0x40, 0x80),
_INIT_CMD(0xBA, 0xC5, 0x07, 0x00, 0x04, 0x11, 0x25, 0x8C),
_INIT_CMD(0xBB, 0xC5, 0x07, 0x00, 0x03, 0x11, 0x25, 0x8C),
_INIT_CMD(0xC0, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
_INIT_CMD(0xC1, 0x00, 0x3C, 0x00, 0x00, 0x00, 0x80, 0x80),
_INIT_CMD(0xC4, 0x00, 0x00),
_INIT_CMD(0xEF, 0x41),
/* page 4 */
_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x04),
_INIT_CMD(0xEC, 0x4C),
/* page 5 */
_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x05),
_INIT_CMD(0xB0, 0x13, 0x03, 0x03, 0x01),
_INIT_CMD(0xB1, 0x30, 0x00),
_INIT_CMD(0xB2, 0x02, 0x02, 0x00),
_INIT_CMD(0xB3, 0x82, 0x23, 0x82, 0x9D),
_INIT_CMD(0xB4, 0xC5, 0x75, 0x24, 0x57),
_INIT_CMD(0xB5, 0x00, 0xD4, 0x72, 0x11, 0x11, 0xAB, 0x0A),
_INIT_CMD(0xB6, 0x00, 0x00, 0xD5, 0x72, 0x24, 0x56),
_INIT_CMD(0xB7, 0x5C, 0xDC, 0x5C, 0x5C),
_INIT_CMD(0xB9, 0x0C, 0x00, 0x00, 0x01, 0x00),
_INIT_CMD(0xC0, 0x75, 0x11, 0x11, 0x54, 0x05),
_INIT_CMD(0xC6, 0x00, 0x00, 0x00, 0x00),
_INIT_CMD(0xD0, 0x00, 0x48, 0x08, 0x00, 0x00),
_INIT_CMD(0xD1, 0x00, 0x48, 0x09, 0x00, 0x00),
/* page 6 */
_INIT_CMD(0xF0, 0x55, 0xAA, 0x52, 0x08, 0x06),
_INIT_CMD(0xB0, 0x02, 0x32, 0x32, 0x08, 0x2F),
_INIT_CMD(0xB1, 0x2E, 0x15, 0x14, 0x13, 0x12),
_INIT_CMD(0xB2, 0x11, 0x10, 0x00, 0x3D, 0x3D),
_INIT_CMD(0xB3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
_INIT_CMD(0xB4, 0x3D, 0x32),
_INIT_CMD(0xB5, 0x03, 0x32, 0x32, 0x09, 0x2F),
_INIT_CMD(0xB6, 0x2E, 0x1B, 0x1A, 0x19, 0x18),
_INIT_CMD(0xB7, 0x17, 0x16, 0x01, 0x3D, 0x3D),
_INIT_CMD(0xB8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
_INIT_CMD(0xB9, 0x3D, 0x32),
_INIT_CMD(0xC0, 0x01, 0x32, 0x32, 0x09, 0x2F),
_INIT_CMD(0xC1, 0x2E, 0x1A, 0x1B, 0x16, 0x17),
_INIT_CMD(0xC2, 0x18, 0x19, 0x03, 0x3D, 0x3D),
_INIT_CMD(0xC3, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
_INIT_CMD(0xC4, 0x3D, 0x32),
_INIT_CMD(0xC5, 0x00, 0x32, 0x32, 0x08, 0x2F),
_INIT_CMD(0xC6, 0x2E, 0x14, 0x15, 0x10, 0x11),
_INIT_CMD(0xC7, 0x12, 0x13, 0x02, 0x3D, 0x3D),
_INIT_CMD(0xC8, 0x3D, 0x3D, 0x3D, 0x3D, 0x3D),
_INIT_CMD(0xC9, 0x3D, 0x32),
{},
};
static const struct panel_desc innolux_p097pfg_panel_desc = {
.mode = &innolux_p097pfg_mode,
.bpc = 8,
.size = {
.width = 147,
.height = 196,
},
.flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
MIPI_DSI_MODE_LPM,
.format = MIPI_DSI_FMT_RGB888,
.init_cmds = innolux_p097pfg_init_cmds,
.lanes = 4,
.supply_names = innolux_p097pfg_supply_names,
.num_supplies = ARRAY_SIZE(innolux_p097pfg_supply_names),
.sleep_mode_delay = 100, /* T15 */
};
static int innolux_panel_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
const struct drm_display_mode *m = innolux->desc->mode;
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, m);
if (!mode) {
dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
return -ENOMEM;
}
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
connector->display_info.width_mm = innolux->desc->size.width;
connector->display_info.height_mm = innolux->desc->size.height;
connector->display_info.bpc = innolux->desc->bpc;
return 1;
}
static const struct drm_panel_funcs innolux_panel_funcs = {
.disable = innolux_panel_disable,
.unprepare = innolux_panel_unprepare,
.prepare = innolux_panel_prepare,
.enable = innolux_panel_enable,
.get_modes = innolux_panel_get_modes,
};
static const struct of_device_id innolux_of_match[] = {
{ .compatible = "innolux,p079zca",
.data = &innolux_p079zca_panel_desc
},
{ .compatible = "innolux,p097pfg",
.data = &innolux_p097pfg_panel_desc
},
{ }
};
MODULE_DEVICE_TABLE(of, innolux_of_match);
static int innolux_panel_add(struct mipi_dsi_device *dsi,
const struct panel_desc *desc)
{
struct innolux_panel *innolux;
struct device *dev = &dsi->dev;
int err, i;
innolux = devm_kzalloc(dev, sizeof(*innolux), GFP_KERNEL);
if (!innolux)
return -ENOMEM;
innolux->desc = desc;
innolux->supplies = devm_kcalloc(dev, desc->num_supplies,
sizeof(*innolux->supplies),
GFP_KERNEL);
if (!innolux->supplies)
return -ENOMEM;
for (i = 0; i < desc->num_supplies; i++)
innolux->supplies[i].supply = desc->supply_names[i];
err = devm_regulator_bulk_get(dev, desc->num_supplies,
innolux->supplies);
if (err < 0)
return err;
innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
GPIOD_OUT_HIGH);
if (IS_ERR(innolux->enable_gpio)) {
err = PTR_ERR(innolux->enable_gpio);
dev_dbg(dev, "failed to get enable gpio: %d\n", err);
innolux->enable_gpio = NULL;
}
drm_panel_init(&innolux->base, dev, &innolux_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
err = drm_panel_of_backlight(&innolux->base);
if (err)
return err;
drm_panel_add(&innolux->base);
mipi_dsi_set_drvdata(dsi, innolux);
innolux->link = dsi;
return 0;
}
static void innolux_panel_del(struct innolux_panel *innolux)
{
drm_panel_remove(&innolux->base);
}
static int innolux_panel_probe(struct mipi_dsi_device *dsi)
{
const struct panel_desc *desc;
struct innolux_panel *innolux;
int err;
desc = of_device_get_match_data(&dsi->dev);
dsi->mode_flags = desc->flags;
dsi->format = desc->format;
dsi->lanes = desc->lanes;
err = innolux_panel_add(dsi, desc);
if (err < 0)
return err;
err = mipi_dsi_attach(dsi);
if (err < 0) {
innolux = mipi_dsi_get_drvdata(dsi);
innolux_panel_del(innolux);
return err;
}
return 0;
}
static void innolux_panel_remove(struct mipi_dsi_device *dsi)
{
struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
int err;
err = drm_panel_unprepare(&innolux->base);
if (err < 0)
dev_err(&dsi->dev, "failed to unprepare panel: %d\n", err);
err = drm_panel_disable(&innolux->base);
if (err < 0)
dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
err = mipi_dsi_detach(dsi);
if (err < 0)
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
innolux_panel_del(innolux);
}
static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
{
struct innolux_panel *innolux = mipi_dsi_get_drvdata(dsi);
drm_panel_unprepare(&innolux->base);
drm_panel_disable(&innolux->base);
}
static struct mipi_dsi_driver innolux_panel_driver = {
.driver = {
.name = "panel-innolux-p079zca",
.of_match_table = innolux_of_match,
},
.probe = innolux_panel_probe,
.remove = innolux_panel_remove,
.shutdown = innolux_panel_shutdown,
};
module_mipi_dsi_driver(innolux_panel_driver);
MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
MODULE_AUTHOR("Lin Huang <hl@rock-chips.com>");
MODULE_DESCRIPTION("Innolux P079ZCA panel driver");
MODULE_LICENSE("GPL v2");
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