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linux_dsm_epyc7002/drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c
Ville Syrjälä 0425662fdf drm: Nuke mode->vrefresh 
Get rid of mode->vrefresh and just calculate it on demand. Saves
a bit of space and avoids the cached value getting out of sync
with reality.

Mostly done with cocci, with the following manual fixups:
- Remove the now empty loop in drm_helper_probe_single_connector_modes()
- Fix __MODE() macro in ch7006_mode.c
- Fix DRM_MODE_ARG() macro in drm_modes.h
- Remove leftover comment from samsung_s6d16d0_mode
- Drop the TODO

@@
@@
struct drm_display_mode {
	...
-	int vrefresh;
	...
};

@@
identifier N;
expression E;
@@
struct drm_display_mode N = {
-	.vrefresh = E
};

@@
identifier N;
expression E;
@@
struct drm_display_mode N[...] = {
...,
{
-	.vrefresh = E
}
,...
};

@@
expression E;
@@
{
	DRM_MODE(...),
-	.vrefresh = E,
}

@@
identifier M, R;
@@
int drm_mode_vrefresh(const struct drm_display_mode *M)
{
  ...
- if (M->vrefresh > 0)
- 	R = M->vrefresh;
- else
  if (...) {
  ...
  }
  ...
}

@@
struct drm_display_mode *p;
expression E;
@@
(
- p->vrefresh = E;
|
- p->vrefresh
+ drm_mode_vrefresh(p)
)

@@
struct drm_display_mode s;
expression E;
@@
(
- s.vrefresh = E;
|
- s.vrefresh
+ drm_mode_vrefresh(&s)
)

@@
expression E;
@@
- drm_mode_vrefresh(E) ? drm_mode_vrefresh(E) : drm_mode_vrefresh(E)
+ drm_mode_vrefresh(E)

@find_substruct@
identifier X;
identifier S;
@@
struct X {
...
	struct drm_display_mode S;
...
};

@@
identifier find_substruct.S;
expression E;
identifier I;
@@
{
.S = {
-	.vrefresh = E
}
}

@@
identifier find_substruct.S;
identifier find_substruct.X;
expression E;
identifier I;
@@
struct X I[...] = {
...,
.S = {
-	.vrefresh = E
}
,...
};

v2: Drop TODO
v3: Rebase
v4: Rebase

Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: CK Hu <ck.hu@mediatek.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jerry Han <hanxu5@huaqin.corp-partner.google.com>
Cc: Icenowy Zheng <icenowy@aosc.io>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Stefan Mavrodiev <stefan@olimex.com>
Cc: Robert Chiras <robert.chiras@nxp.com>
Cc: "Guido Günther" <agx@sigxcpu.org>
Cc: Purism Kernel Team <kernel@puri.sm>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: linux-amlogic@lists.infradead.org
Cc: nouveau@lists.freedesktop.org
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200428171940.19552-4-ville.syrjala@linux.intel.com
2020-05-27 14:31:42 +03:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Red Hat
* Copyright (C) 2015 Sony Mobile Communications Inc.
* Author: Werner Johansson <werner.johansson@sonymobile.com>
*
* Based on AUO panel driver by Rob Clark <robdclark@gmail.com>
*/
#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_panel.h>
struct sharp_nt_panel {
struct drm_panel base;
struct mipi_dsi_device *dsi;
struct regulator *supply;
struct gpio_desc *reset_gpio;
bool prepared;
bool enabled;
const struct drm_display_mode *mode;
};
static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel)
{
return container_of(panel, struct sharp_nt_panel, base);
}
static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt)
{
struct mipi_dsi_device *dsi = sharp_nt->dsi;
int ret;
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
if (ret < 0)
return ret;
msleep(120);
/* Novatek two-lane operation */
ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1);
if (ret < 0)
return ret;
/* Set both MCU and RGB I/F to 24bpp */
ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT |
(MIPI_DCS_PIXEL_FMT_24BIT << 4));
if (ret < 0)
return ret;
return 0;
}
static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt)
{
struct mipi_dsi_device *dsi = sharp_nt->dsi;
int ret;
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
ret = mipi_dsi_dcs_set_display_on(dsi);
if (ret < 0)
return ret;
return 0;
}
static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt)
{
struct mipi_dsi_device *dsi = sharp_nt->dsi;
int ret;
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
ret = mipi_dsi_dcs_set_display_off(dsi);
if (ret < 0)
return ret;
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ret < 0)
return ret;
return 0;
}
static int sharp_nt_panel_disable(struct drm_panel *panel)
{
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
if (!sharp_nt->enabled)
return 0;
sharp_nt->enabled = false;
return 0;
}
static int sharp_nt_panel_unprepare(struct drm_panel *panel)
{
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
int ret;
if (!sharp_nt->prepared)
return 0;
ret = sharp_nt_panel_off(sharp_nt);
if (ret < 0) {
dev_err(panel->dev, "failed to set panel off: %d\n", ret);
return ret;
}
regulator_disable(sharp_nt->supply);
if (sharp_nt->reset_gpio)
gpiod_set_value(sharp_nt->reset_gpio, 0);
sharp_nt->prepared = false;
return 0;
}
static int sharp_nt_panel_prepare(struct drm_panel *panel)
{
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
int ret;
if (sharp_nt->prepared)
return 0;
ret = regulator_enable(sharp_nt->supply);
if (ret < 0)
return ret;
msleep(20);
if (sharp_nt->reset_gpio) {
gpiod_set_value(sharp_nt->reset_gpio, 1);
msleep(1);
gpiod_set_value(sharp_nt->reset_gpio, 0);
msleep(1);
gpiod_set_value(sharp_nt->reset_gpio, 1);
msleep(10);
}
ret = sharp_nt_panel_init(sharp_nt);
if (ret < 0) {
dev_err(panel->dev, "failed to init panel: %d\n", ret);
goto poweroff;
}
ret = sharp_nt_panel_on(sharp_nt);
if (ret < 0) {
dev_err(panel->dev, "failed to set panel on: %d\n", ret);
goto poweroff;
}
sharp_nt->prepared = true;
return 0;
poweroff:
regulator_disable(sharp_nt->supply);
if (sharp_nt->reset_gpio)
gpiod_set_value(sharp_nt->reset_gpio, 0);
return ret;
}
static int sharp_nt_panel_enable(struct drm_panel *panel)
{
struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
if (sharp_nt->enabled)
return 0;
sharp_nt->enabled = true;
return 0;
}
static const struct drm_display_mode default_mode = {
.clock = 41118,
.hdisplay = 540,
.hsync_start = 540 + 48,
.hsync_end = 540 + 48 + 80,
.htotal = 540 + 48 + 80 + 32,
.vdisplay = 960,
.vsync_start = 960 + 3,
.vsync_end = 960 + 3 + 15,
.vtotal = 960 + 3 + 15 + 1,
};
static int sharp_nt_panel_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &default_mode);
if (!mode) {
dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
default_mode.hdisplay, default_mode.vdisplay,
drm_mode_vrefresh(&default_mode));
return -ENOMEM;
}
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
connector->display_info.width_mm = 54;
connector->display_info.height_mm = 95;
return 1;
}
static const struct drm_panel_funcs sharp_nt_panel_funcs = {
.disable = sharp_nt_panel_disable,
.unprepare = sharp_nt_panel_unprepare,
.prepare = sharp_nt_panel_prepare,
.enable = sharp_nt_panel_enable,
.get_modes = sharp_nt_panel_get_modes,
};
static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
{
struct device *dev = &sharp_nt->dsi->dev;
int ret;
sharp_nt->mode = &default_mode;
sharp_nt->supply = devm_regulator_get(dev, "avdd");
if (IS_ERR(sharp_nt->supply))
return PTR_ERR(sharp_nt->supply);
sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(sharp_nt->reset_gpio)) {
dev_err(dev, "cannot get reset-gpios %ld\n",
PTR_ERR(sharp_nt->reset_gpio));
sharp_nt->reset_gpio = NULL;
} else {
gpiod_set_value(sharp_nt->reset_gpio, 0);
}
drm_panel_init(&sharp_nt->base, &sharp_nt->dsi->dev,
&sharp_nt_panel_funcs, DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_of_backlight(&sharp_nt->base);
if (ret)
return ret;
return drm_panel_add(&sharp_nt->base);
}
static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt)
{
if (sharp_nt->base.dev)
drm_panel_remove(&sharp_nt->base);
}
static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
{
struct sharp_nt_panel *sharp_nt;
int ret;
dsi->lanes = 2;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
MIPI_DSI_MODE_VIDEO_HSE |
MIPI_DSI_CLOCK_NON_CONTINUOUS |
MIPI_DSI_MODE_EOT_PACKET;
sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL);
if (!sharp_nt)
return -ENOMEM;
mipi_dsi_set_drvdata(dsi, sharp_nt);
sharp_nt->dsi = dsi;
ret = sharp_nt_panel_add(sharp_nt);
if (ret < 0)
return ret;
return mipi_dsi_attach(dsi);
}
static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi)
{
struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
int ret;
ret = drm_panel_disable(&sharp_nt->base);
if (ret < 0)
dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);
ret = mipi_dsi_detach(dsi);
if (ret < 0)
dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
sharp_nt_panel_del(sharp_nt);
return 0;
}
static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi)
{
struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
drm_panel_disable(&sharp_nt->base);
}
static const struct of_device_id sharp_nt_of_match[] = {
{ .compatible = "sharp,ls043t1le01-qhd", },
{ }
};
MODULE_DEVICE_TABLE(of, sharp_nt_of_match);
static struct mipi_dsi_driver sharp_nt_panel_driver = {
.driver = {
.name = "panel-sharp-ls043t1le01-qhd",
.of_match_table = sharp_nt_of_match,
},
.probe = sharp_nt_panel_probe,
.remove = sharp_nt_panel_remove,
.shutdown = sharp_nt_panel_shutdown,
};
module_mipi_dsi_driver(sharp_nt_panel_driver);
MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>");
MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver");
MODULE_LICENSE("GPL v2");
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