Commit 1cac9ba2 authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Tomi Valkeinen

drm/omap: dsi: convert to drm_panel

This converts the DSI module to expect common drm_panel display
drivers instead of dssdev based ones.
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-33-tomi.valkeinen@ti.com
parent e4869b04
......@@ -6,8 +6,6 @@
* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
*/
/* #define DEBUG */
#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
......@@ -19,11 +17,14 @@
#include <linux/regulator/consumer.h>
#include <drm/drm_connector.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
#include <video/display_timing.h>
#include <video/mipi_display.h>
#include <video/of_display_timing.h>
#include "../dss/omapdss.h"
#include <video/videomode.h>
#define DCS_READ_NUM_ERRORS 0x05
#define DCS_GET_ID1 0xda
......@@ -34,11 +35,8 @@
struct panel_drv_data {
struct mipi_dsi_device *dsi;
struct omap_dss_device dssdev;
struct omap_dss_device *src;
struct videomode vm;
struct drm_panel panel;
struct drm_display_mode mode;
struct mutex lock;
......@@ -66,7 +64,10 @@ struct panel_drv_data {
bool intro_printed;
};
#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
static inline struct panel_drv_data *panel_to_ddata(struct drm_panel *panel)
{
return container_of(panel, struct panel_drv_data, panel);
}
static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable);
......@@ -281,7 +282,6 @@ static void dsicm_hw_reset(struct panel_drv_data *ddata)
static int dsicm_power_on(struct panel_drv_data *ddata)
{
struct omap_dss_device *src = ddata->src;
u8 id1, id2, id3;
int r;
......@@ -318,10 +318,6 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
if (r)
goto err;
r = src->ops->dsi.enable_video_output(src, ddata->dsi->channel);
if (r)
goto err;
ddata->enabled = true;
if (!ddata->intro_printed) {
......@@ -341,15 +337,12 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
return r;
}
static void dsicm_power_off(struct panel_drv_data *ddata)
static int dsicm_power_off(struct panel_drv_data *ddata)
{
struct omap_dss_device *src = ddata->src;
int r;
ddata->enabled = false;
src->ops->dsi.disable_video_output(src, ddata->dsi->channel);
r = mipi_dsi_dcs_set_display_off(ddata->dsi);
if (!r)
r = dsicm_sleep_in(ddata);
......@@ -359,51 +352,25 @@ static void dsicm_power_off(struct panel_drv_data *ddata)
"error disabling panel, issuing HW reset\n");
dsicm_hw_reset(ddata);
}
}
static int dsicm_connect(struct omap_dss_device *src,
struct omap_dss_device *dst)
{
struct panel_drv_data *ddata = to_panel_data(dst);
ddata->src = src;
return 0;
}
static void dsicm_disconnect(struct omap_dss_device *src,
struct omap_dss_device *dst)
{
struct panel_drv_data *ddata = to_panel_data(dst);
ddata->src = NULL;
return r;
}
static void dsicm_pre_enable(struct omap_dss_device *dssdev)
static int dsicm_prepare(struct drm_panel *panel)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct omap_dss_device *src = ddata->src;
struct panel_drv_data *ddata = panel_to_ddata(panel);
int r;
struct omap_dss_dsi_config dsi_config = {
.vm = &ddata->vm,
.hs_clk_min = 150000000,
.hs_clk_max = 300000000,
.lp_clk_min = 7000000,
.lp_clk_max = 10000000,
};
r = regulator_bulk_enable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
if (r)
dev_err(&ddata->dsi->dev, "failed to enable supplies: %d\n", r);
r = src->ops->dsi.set_config(src, &dsi_config);
if (r) {
dev_err(&ddata->dsi->dev, "failed to configure DSI\n");
}
return r;
}
static void dsicm_enable(struct omap_dss_device *dssdev)
static int dsicm_enable(struct drm_panel *panel)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct panel_drv_data *ddata = panel_to_ddata(panel);
int r;
mutex_lock(&ddata->lock);
......@@ -416,33 +383,39 @@ static void dsicm_enable(struct omap_dss_device *dssdev)
dsicm_bl_power(ddata, true);
return;
return 0;
err:
dev_dbg(&ddata->dsi->dev, "enable failed (%d)\n", r);
dev_err(&ddata->dsi->dev, "enable failed (%d)\n", r);
mutex_unlock(&ddata->lock);
return r;
}
static int dsicm_unprepare(struct drm_panel *panel)
{
struct panel_drv_data *ddata = panel_to_ddata(panel);
int r;
r = regulator_bulk_disable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
if (r)
dev_err(&ddata->dsi->dev, "failed to disable supplies: %d\n", r);
return r;
}
static void dsicm_disable(struct omap_dss_device *dssdev)
static int dsicm_disable(struct drm_panel *panel)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct panel_drv_data *ddata = panel_to_ddata(panel);
int r;
dsicm_bl_power(ddata, false);
mutex_lock(&ddata->lock);
dsicm_power_off(ddata);
r = dsicm_power_off(ddata);
mutex_unlock(&ddata->lock);
}
static void dsicm_post_disable(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
int r;
r = regulator_bulk_disable(ARRAY_SIZE(ddata->supplies), ddata->supplies);
if (r)
dev_err(&ddata->dsi->dev, "failed to disable supplies: %d\n", r);
return r;
}
static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable)
......@@ -461,50 +434,37 @@ static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable)
return r;
}
static int dsicm_get_modes(struct omap_dss_device *dssdev,
static int dsicm_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct panel_drv_data *ddata = panel_to_ddata(panel);
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &ddata->mode);
if (!mode) {
dev_err(&ddata->dsi->dev, "failed to add mode %ux%ux@%u kHz\n",
ddata->mode.hdisplay, ddata->mode.vdisplay,
ddata->mode.clock);
return -ENOMEM;
}
drm_mode_set_name(mode);
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
connector->display_info.width_mm = ddata->width_mm;
connector->display_info.height_mm = ddata->height_mm;
return omapdss_display_get_modes(connector, &ddata->vm);
}
static int dsicm_check_timings(struct omap_dss_device *dssdev,
struct drm_display_mode *mode)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
int ret = 0;
if (mode->hdisplay != ddata->vm.hactive)
ret = -EINVAL;
if (mode->vdisplay != ddata->vm.vactive)
ret = -EINVAL;
drm_mode_probed_add(connector, mode);
if (ret) {
dev_warn(dssdev->dev, "wrong resolution: %d x %d",
mode->hdisplay, mode->vdisplay);
dev_warn(dssdev->dev, "panel resolution: %d x %d",
ddata->vm.hactive, ddata->vm.vactive);
}
return ret;
return 1;
}
static const struct omap_dss_device_ops dsicm_ops = {
.connect = dsicm_connect,
.disconnect = dsicm_disconnect,
.pre_enable = dsicm_pre_enable,
.enable = dsicm_enable,
.disable = dsicm_disable,
.post_disable = dsicm_post_disable,
.get_modes = dsicm_get_modes,
.check_timings = dsicm_check_timings,
static const struct drm_panel_funcs dsicm_panel_funcs = {
.unprepare = dsicm_unprepare,
.disable = dsicm_disable,
.prepare = dsicm_prepare,
.enable = dsicm_enable,
.get_modes = dsicm_get_modes,
};
static int dsicm_probe_of(struct mipi_dsi_device *dsi)
......@@ -513,6 +473,10 @@ static int dsicm_probe_of(struct mipi_dsi_device *dsi)
struct backlight_device *backlight;
struct panel_drv_data *ddata = mipi_dsi_get_drvdata(dsi);
struct display_timing timing;
struct videomode vm = {
.hactive = 864,
.vactive = 480,
};
int err;
ddata->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
......@@ -524,15 +488,16 @@ static int dsicm_probe_of(struct mipi_dsi_device *dsi)
err = of_get_display_timing(node, "panel-timing", &timing);
if (!err) {
videomode_from_timing(&timing, &ddata->vm);
if (!ddata->vm.pixelclock)
ddata->vm.pixelclock =
ddata->vm.hactive * ddata->vm.vactive * 60;
videomode_from_timing(&timing, &vm);
} else {
dev_warn(&dsi->dev,
"failed to get video timing, using defaults\n");
}
if (!vm.pixelclock)
vm.pixelclock = vm.hactive * vm.vactive * 60;
drm_display_mode_from_videomode(&vm, &ddata->mode);
ddata->width_mm = 0;
of_property_read_u32(node, "width-mm", &ddata->width_mm);
......@@ -564,7 +529,6 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
struct panel_drv_data *ddata;
struct backlight_device *bldev = NULL;
struct device *dev = &dsi->dev;
struct omap_dss_device *dssdev;
int r;
dev_dbg(dev, "probe\n");
......@@ -576,30 +540,17 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
mipi_dsi_set_drvdata(dsi, ddata);
ddata->dsi = dsi;
ddata->vm.hactive = 864;
ddata->vm.vactive = 480;
ddata->vm.pixelclock = 864 * 480 * 60;
r = dsicm_probe_of(dsi);
if (r)
return r;
dssdev = &ddata->dssdev;
dssdev->dev = dev;
dssdev->ops = &dsicm_ops;
dssdev->type = OMAP_DISPLAY_TYPE_DSI;
dssdev->display = true;
dssdev->owner = THIS_MODULE;
dssdev->of_port = 0;
dssdev->ops_flags = OMAP_DSS_DEVICE_OP_MODES;
omapdss_display_init(dssdev);
omapdss_device_register(dssdev);
mutex_init(&ddata->lock);
dsicm_hw_reset(ddata);
drm_panel_init(&ddata->panel, dev, &dsicm_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
if (ddata->use_dsi_backlight) {
struct backlight_properties props = { 0 };
props.max_brightness = 255;
......@@ -628,6 +579,8 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
dsi->hs_rate = 300000000;
dsi->lp_rate = 10000000;
drm_panel_add(&ddata->panel);
r = mipi_dsi_attach(dsi);
if (r < 0)
goto err_dsi_attach;
......@@ -635,6 +588,7 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
return 0;
err_dsi_attach:
drm_panel_remove(&ddata->panel);
sysfs_remove_group(&dsi->dev.kobj, &dsicm_attr_group);
err_bl:
if (ddata->extbldev)
......@@ -646,15 +600,12 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
static int __exit dsicm_remove(struct mipi_dsi_device *dsi)
{
struct panel_drv_data *ddata = mipi_dsi_get_drvdata(dsi);
struct omap_dss_device *dssdev = &ddata->dssdev;
dev_dbg(&dsi->dev, "remove\n");
mipi_dsi_detach(dsi);
omapdss_device_unregister(dssdev);
omapdss_device_disconnect(ddata->src, dssdev);
drm_panel_remove(&ddata->panel);
sysfs_remove_group(&dsi->dev.kobj, &dsicm_attr_group);
......@@ -668,7 +619,7 @@ static int __exit dsicm_remove(struct mipi_dsi_device *dsi)
}
static const struct of_device_id dsicm_of_match[] = {
{ .compatible = "omapdss,panel-dsi-cm", },
{ .compatible = "panel-dsi-cm", },
{},
};
......
......@@ -36,6 +36,7 @@
#include <linux/sys_soc.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>
#include <video/mipi_display.h>
#include "omapdss.h"
......@@ -217,6 +218,8 @@ static int dsi_vc_send_null(struct dsi_data *dsi, int channel);
static ssize_t _omap_dsi_host_transfer(struct dsi_data *dsi,
const struct mipi_dsi_msg *msg);
static void dsi_display_disable(struct omap_dss_device *dssdev);
/* DSI PLL HSDIV indices */
#define HSDIV_DISPC 0
#define HSDIV_DSI 1
......@@ -384,6 +387,7 @@ struct dsi_data {
bool te_enabled;
bool ulps_enabled;
bool ulps_auto_idle;
bool video_enabled;
struct delayed_work ulps_work;
......@@ -424,6 +428,8 @@ struct dsi_data {
unsigned int scp_clk_refcount;
struct omap_dss_dsi_config config;
struct dss_lcd_mgr_config mgr_config;
struct videomode vm;
enum mipi_dsi_pixel_format pix_fmt;
......@@ -3624,7 +3630,7 @@ static int dsi_configure_pins(struct omap_dss_device *dssdev,
return 0;
}
static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
static void dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
int bpp = mipi_dsi_pixel_format_to_bpp(dsi->pix_fmt);
......@@ -3633,8 +3639,10 @@ static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
int r;
r = dsi_display_init_dispc(dsi);
if (r)
return r;
if (r) {
dev_err(dsi->dev, "failed to init dispc!\n");
return;
}
if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
switch (dsi->pix_fmt) {
......@@ -3674,7 +3682,7 @@ static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
if (r)
goto err_mgr_enable;
return 0;
return;
err_mgr_enable:
if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
......@@ -3683,7 +3691,8 @@ static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
}
err_pix_fmt:
dsi_display_uninit_dispc(dsi);
return r;
dev_err(dsi->dev, "failed to enable DSI encoder!\n");
return;
}
static void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel)
......@@ -3706,6 +3715,25 @@ static void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel
dsi_display_uninit_dispc(dsi);
}
static void dsi_disable_video_outputs(struct omap_dss_device *dssdev)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
unsigned int i;
dsi_bus_lock(dsi);
dsi->video_enabled = false;
for (i = 0; i < 4; i++) {
if (!dsi->vc[i].dest)
continue;
dsi_disable_video_output(dssdev, i);
}
dsi_display_disable(dssdev);
dsi_bus_unlock(dsi);
}
static void dsi_update_screen_dispc(struct dsi_data *dsi)
{
unsigned int bytespp;
......@@ -3894,6 +3922,11 @@ static int dsi_update_channel(struct omap_dss_device *dssdev, int channel)
dsi_bus_lock(dsi);
if (!dsi->video_enabled) {
r = -EIO;
goto err;
}
if (!dsi->vc[channel].dest) {
r = -ENODEV;
goto err;
......@@ -4164,8 +4197,30 @@ static void dsi_display_enable(struct omap_dss_device *dssdev)
struct dsi_data *dsi = to_dsi_data(dssdev);
DSSDBG("dsi_display_enable\n");
dsi_bus_lock(dsi);
WARN_ON(!dsi_bus_is_locked(dsi));
_dsi_display_enable(dsi);
}
static void dsi_enable_video_outputs(struct omap_dss_device *dssdev)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
unsigned int i;
dsi_bus_lock(dsi);
dsi_display_enable(dssdev);
for (i = 0; i < 4; i++) {
if (!dsi->vc[i].dest)
continue;
dsi_enable_video_output(dssdev, i);
}
dsi->video_enabled = true;
dsi_set_ulps_auto(dsi, true);
dsi_bus_unlock(dsi);
}
......@@ -4192,11 +4247,11 @@ static void dsi_display_disable(struct omap_dss_device *dssdev)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
WARN_ON(!dsi_bus_is_locked(dsi));
DSSDBG("dsi_display_disable\n");
dsi_bus_lock(dsi);
_dsi_display_disable(dsi, true, false);
dsi_bus_unlock(dsi);
}
static int dsi_enable_te(struct dsi_data *dsi, bool enable)
......@@ -4736,14 +4791,18 @@ static bool dsi_is_video_mode(struct omap_dss_device *dssdev)
}
static int dsi_set_config(struct omap_dss_device *dssdev,
const struct omap_dss_dsi_config *config)
const struct drm_display_mode *mode)
{
struct dsi_data *dsi = to_dsi_data(dssdev);
struct dsi_clk_calc_ctx ctx;
struct omap_dss_dsi_config cfg = *config;
struct videomode vm;
struct omap_dss_dsi_config cfg = dsi->config;
bool ok;
int r;
drm_display_mode_to_videomode(mode, &vm);
cfg.vm = &vm;
mutex_lock(&dsi->lock);
cfg.mode = dsi->mode;
......@@ -4906,9 +4965,15 @@ static ssize_t omap_dsi_host_transfer(struct mipi_dsi_host *host,
int r;
dsi_bus_lock(dsi);
dsi_set_ulps_auto(dsi, false);
r = _omap_dsi_host_transfer(dsi, msg);
dsi_set_ulps_auto(dsi, true);
if (dsi->video_enabled) {
dsi_set_ulps_auto(dsi, false);
r = _omap_dsi_host_transfer(dsi, msg);
dsi_set_ulps_auto(dsi, true);
} else {
r = -EIO;
}
dsi_bus_unlock(dsi);
return r;
......@@ -4929,6 +4994,23 @@ static int dsi_get_clocks(struct dsi_data *dsi)
return 0;
}
static void dsi_set_timings(struct omap_dss_device *dssdev,
const struct drm_display_mode *mode)
{
DSSDBG("dsi_set_timings\n");
dsi_set_config(dssdev, mode);
}
static int dsi_check_timings(struct omap_dss_device *dssdev,
struct drm_display_mode *mode)
{
DSSDBG("dsi_check_timings\n");
/* TODO */
return 0;
}
static int dsi_connect(struct omap_dss_device *src,
struct omap_dss_device *dst)
{
......@@ -4944,15 +5026,13 @@ static void dsi_disconnect(struct omap_dss_device *src,
static const struct omap_dss_device_ops dsi_ops = {
.connect = dsi_connect,
.disconnect = dsi_disconnect,
.enable = dsi_display_enable,
.disable = dsi_display_disable,
.enable = dsi_enable_video_outputs,
.disable = dsi_disable_video_outputs,
.dsi = {
.set_config = dsi_set_config,
.enable_video_output = dsi_enable_video_output,
.disable_video_output = dsi_disable_video_output,
.check_timings = dsi_check_timings,
.set_timings = dsi_set_timings,
.dsi = {
.update = dsi_update_all,
.is_video_mode = dsi_is_video_mode,
},
......@@ -5080,10 +5160,12 @@ static int omap_dsi_host_attach(struct mipi_dsi_host *host,
INIT_DEFERRABLE_WORK(&dsi->ulps_work,
omap_dsi_ulps_work_callback);
dsi_bus_lock(dsi);
dsi->config.hs_clk_min = 150000000; // TODO: get from client?
dsi->config.hs_clk_max = client->hs_rate;
dsi->config.lp_clk_min = 7000000; // TODO: get from client?
dsi->config.lp_clk_max = client->lp_rate;
dsi->ulps_auto_idle = false;
dsi_set_ulps_auto(dsi, true);
dsi_bus_unlock(dsi);
return 0;
}
......
......@@ -174,7 +174,6 @@ static const struct of_device_id omapdss_of_match[] __initconst = {
};
static const struct of_device_id omapdss_of_fixups_whitelist[] __initconst = {
{ .compatible = "panel-dsi-cm" },
{},
};
......
......@@ -281,14 +281,6 @@ struct omap_dss_writeback_info {
struct omapdss_dsi_ops {
int (*update)(struct omap_dss_device *dssdev);
bool (*is_video_mode)(struct omap_dss_device *dssdev);
/* legacy API used by omapdss panels */
int (*set_config)(struct omap_dss_device *dssdev,
const struct omap_dss_dsi_config *cfg);
int (*enable_video_output)(struct omap_dss_device *dssdev, int channel);
void (*disable_video_output)(struct omap_dss_device *dssdev,
int channel);
};
struct omap_dss_device_ops {
......
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