Hi,
> Am 17.11.2019 um 03:40 schrieb Sebastian Reichel
> <sebastian.reic...@collabora.com>:
>
> This converts the DSI module to expect common drm_panel display
> drivers instead of dssdev based ones.
>
> This commit is WIP. We somehow need to know the panels resolution
> in omap_dsi_host_attach(), so that we can properly configure the
> DSI bus clock before enabling the bus. The control bus must be
> enabled at this point, so that the panel can use it.
>
> Other drivers run drm_panel_attach() in their dsi host attach,
> which makes it possible to call drm_panel_get_modes() afterwards
> and the get the correct mode from the connector.
>
> Signed-off-by: Sebastian Reichel <sebastian.reic...@collabora.com>
> ---
> .../gpu/drm/omapdrm/displays/panel-dsi-cm.c | 217 +++++++-----------
> drivers/gpu/drm/omapdrm/dss/dsi.c | 141 ++++++++++--
> .../gpu/drm/omapdrm/dss/omapdss-boot-init.c | 1 -
> drivers/gpu/drm/omapdrm/dss/omapdss.h | 22 +-
> drivers/gpu/drm/omapdrm/omap_crtc.c | 17 +-
> 5 files changed, 205 insertions(+), 193 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> index 18020ac43a83..84b0e79c025e 100644
> --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c
> @@ -6,8 +6,6 @@
> * Author: Tomi Valkeinen <tomi.valkei...@ti.com>
> */
>
> -/* #define DEBUG */
> -
> #include <linux/backlight.h>
> #include <linux/delay.h>
> #include <linux/gpio/consumer.h>
> @@ -20,11 +18,14 @@
> #include <linux/regulator/consumer.h>
>
> #include <drm/drm_connector.h>
> +#include <drm/drm_mipi_dsi.h>
> +#include <drm/drm_panel.h>
> +#include <drm/drm_modes.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
> @@ -35,11 +36,8 @@
>
> 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;
>
> @@ -71,7 +69,11 @@ struct panel_drv_data {
> bool ulps_enabled;
> };
>
> -#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);
>
> @@ -285,10 +287,15 @@ 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;
>
> + r = regulator_bulk_enable(DCS_REGULATOR_SUPPLY_NUM, ddata->supplies);
> + if (r) {
> + dev_err(&ddata->dsi->dev, "failed to enable supplies: %d\n", r);
> + return r;
> + }
> +
> dsicm_hw_reset(ddata);
>
> ddata->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
> @@ -322,10 +329,6 @@ 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 = 1;
>
> if (!ddata->intro_printed) {
> @@ -342,18 +345,17 @@ static int dsicm_power_on(struct panel_drv_data *ddata)
>
> dsicm_hw_reset(ddata);
>
> + regulator_bulk_disable(DCS_REGULATOR_SUPPLY_NUM, ddata->supplies);
> +
> 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 = 0;
>
> - 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);
> @@ -363,52 +365,17 @@ 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;
> -}
> -
> -static void dsicm_pre_enable(struct omap_dss_device *dssdev)
> -{
> - struct panel_drv_data *ddata = to_panel_data(dssdev);
> - struct omap_dss_device *src = ddata->src;
> - 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(DCS_REGULATOR_SUPPLY_NUM, ddata->supplies);
> - if (r) {
> - dev_err(&ddata->dsi->dev, "failed to enable supplies: %d\n", r);
> - }
> + r = regulator_bulk_disable(DCS_REGULATOR_SUPPLY_NUM, ddata->supplies);
> + if (r)
> + dev_err(&ddata->dsi->dev, "failed to disable 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_prepare(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);
> @@ -421,33 +388,27 @@ 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 void dsicm_disable(struct omap_dss_device *dssdev)
> +static int dsicm_unprepare(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(DCS_REGULATOR_SUPPLY_NUM, 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)
> @@ -466,50 +427,35 @@ static int _dsicm_enable_te(struct panel_drv_data
> *ddata, bool enable)
> return r;
> }
>
> -static int dsicm_get_modes(struct omap_dss_device *dssdev,
> - struct drm_connector *connector)
> +static int dsicm_get_modes(struct drm_panel *panel)
> {
> - struct panel_drv_data *ddata = to_panel_data(dssdev);
> -
> - 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;
> + struct panel_drv_data *ddata = panel_to_ddata(panel);
> + struct drm_connector *connector = panel->connector;
> + struct drm_display_mode *mode;
> +
> + mode = drm_mode_duplicate(panel->drm, &ddata->mode);
> + if (!mode) {
> + dev_err(&ddata->dsi->dev, "failed to add mode %ux%ux@%u\n",
> + ddata->mode.hdisplay, ddata->mode.vdisplay,
> + ddata->mode.vrefresh);
> + return -ENOMEM;
> + }
>
> - if (mode->hdisplay != ddata->vm.hactive)
> - ret = -EINVAL;
> + drm_mode_set_name(mode);
>
> - if (mode->vdisplay != ddata->vm.vactive)
> - ret = -EINVAL;
> + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
> + 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);
> - }
> + connector->display_info.width_mm = ddata->width_mm;
> + connector->display_info.height_mm = ddata->height_mm;
>
> - 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,
> + .prepare = dsicm_prepare,
> + .get_modes = dsicm_get_modes,
> };
>
> static int dsicm_probe_of(struct mipi_dsi_device *dsi)
> @@ -518,8 +464,12 @@ static int dsicm_probe_of(struct mipi_dsi_device *dsi)
> struct device_node *backlight;
> struct panel_drv_data *ddata = mipi_dsi_get_drvdata(dsi);
> struct display_timing timing;
> + struct videomode vm;
> int err;
>
> + vm.hactive = 864;
> + vm.vactive = 480;
> +
> ddata->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
> if (IS_ERR(ddata->reset_gpio)) {
> err = PTR_ERR(ddata->reset_gpio);
> @@ -529,15 +479,16 @@ 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);
>
> @@ -573,7 +524,6 @@ 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");
> @@ -585,33 +535,17 @@ 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_ports = BIT(0);
> - dssdev->ops_flags = OMAP_DSS_DEVICE_OP_MODES;
> -
> - dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE |
> - OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
> -
> - 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);
> +
This leads to
drivers/gpu/drm/panel/panel-dsi-cm.c: In function 'dsicm_probe':
drivers/gpu/drm/panel/panel-dsi-cm.c:552:2: error: too many arguments to
function 'drm_panel_init'
drm_panel_init(&ddata->panel, dev, &dsicm_panel_funcs,
^
In file included from drivers/gpu/drm/panel/panel-dsi-cm.c:22:0:
./include/drm/drm_panel.h:150:6: note: declared here
void drm_panel_init(struct drm_panel *panel);
^
(when applied to v5.4-rc7)
> if (ddata->use_dsi_backlight) {
> struct backlight_properties props = { 0 };
> props.max_brightness = 255;
> @@ -643,6 +577,10 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
> if (ddata->ulps_enabled)
> dsi->mode_flags |= MIPI_DSI_MODE_ULPS_IDLE;
>
> + r = drm_panel_add(&ddata->panel);
> + if (r < 0)
> + goto err_panel_add;
> +
> r = mipi_dsi_attach(dsi);
> if (r < 0)
> goto err_dsi_attach;
> @@ -650,6 +588,8 @@ static int dsicm_probe(struct mipi_dsi_device *dsi)
> return 0;
>
> err_dsi_attach:
> + drm_panel_remove(&ddata->panel);
> +err_panel_add:
> sysfs_remove_group(&dsi->dev.kobj, &dsicm_attr_group);
> err_bl:
> if (ddata->extbldev)
> @@ -661,15 +601,12 @@ 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);
>
> @@ -683,7 +620,7 @@ 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", },
> {},
> };
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c
> b/drivers/gpu/drm/omapdrm/dss/dsi.c
> index 66ad7dbc66a2..754815068927 100644
> --- a/drivers/gpu/drm/omapdrm/dss/dsi.c
> +++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
> @@ -37,6 +37,7 @@
>
> #include <video/mipi_display.h>
> #include <drm/drm_mipi_dsi.h>
> +#include <drm/drm_panel.h>
>
> #include "omapdss.h"
> #include "dss.h"
> @@ -220,6 +221,8 @@ 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
> @@ -386,6 +389,7 @@ struct dsi_data {
> bool te_enabled;
> bool ulps_enabled;
> bool ulps_auto_idle;
> + bool video_enabled;
>
> struct delayed_work ulps_work;
>
> @@ -426,6 +430,8 @@ 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;
> @@ -3629,7 +3635,7 @@ 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);
> @@ -3638,8 +3644,10 @@ 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) {
> @@ -3679,7 +3687,7 @@ 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) {
> @@ -3688,7 +3696,8 @@ 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)
> @@ -3711,6 +3720,25 @@ 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);
> + int i;
> +
> + dsi_bus_lock(dsi);
> + dsi->video_enabled = false;
> +
> + for (i = 0; i < 3; 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;
> @@ -3904,6 +3932,11 @@ 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;
> @@ -3949,7 +3982,7 @@ static int dsi_update_all(struct omap_dss_device
> *dssdev)
>
> for (i = 0; i < 4; i++) {
> r = dsi_update_channel(dssdev, i);
> - if (r != -ENODEV)
> + if (r && r != -ENODEV)
> return r;
> }
>
> @@ -4172,8 +4205,30 @@ 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_ulps_enable(dsi);
> +}
> +
> +static void dsi_enable_video_outputs(struct omap_dss_device *dssdev)
> +{
> + struct dsi_data *dsi = to_dsi_data(dssdev);
> + int i;
> +
> + dsi_bus_lock(dsi);
> +
> + dsi_display_enable(dssdev);
> +
> + for (i = 0; i < 3; 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);
> }
>
> @@ -4199,10 +4254,10 @@ static void dsi_display_ulps_disable(struct dsi_data
> *dsi,
> 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_ulps_disable(dsi, true, false);
> - dsi_bus_unlock(dsi);
> }
>
> static int dsi_enable_te(struct dsi_data *dsi, bool enable)
> @@ -4732,15 +4787,26 @@ static bool dsi_vm_calc(struct dsi_data *dsi,
> dsi_vm_calc_pll_cb, ctx);
> }
>
> +static bool dsi_is_video_mode(struct omap_dss_device *dssdev)
> +{
> + struct dsi_data *dsi = to_dsi_data(dssdev);
> +
> + return (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE);
> +}
> +
> 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;
> @@ -4903,9 +4969,15 @@ 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;
> @@ -4926,6 +4998,23 @@ 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)
> {
> @@ -4941,16 +5030,15 @@ 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,
> -
> - .dsi = {
> - .set_config = dsi_set_config,
> + .enable = dsi_enable_video_outputs,
> + .disable = dsi_disable_video_outputs,
>
> - .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,
> },
> };
>
> @@ -5038,6 +5126,7 @@ int omap_dsi_host_attach(struct mipi_dsi_host *host,
> {
> struct dsi_data *dsi = host_to_omap(host);
> unsigned int channel = client->channel;
> + struct drm_panel *panel;
> int r;
>
> if (channel > 3)
> @@ -5050,6 +5139,10 @@ int omap_dsi_host_attach(struct mipi_dsi_host *host,
>
> dsi_bus_lock(dsi);
>
> + panel = of_drm_find_panel(client->dev.of_node);
> + if (IS_ERR(panel))
> + return PTR_ERR(panel);
> +
> atomic_set(&dsi->do_ext_te_update, 0);
>
> if (client->mode_flags & MIPI_DSI_MODE_VIDEO) {
> @@ -5070,8 +5163,12 @@ int omap_dsi_host_attach(struct mipi_dsi_host *host,
> INIT_DEFERRABLE_WORK(&dsi->ulps_work,
> omap_dsi_ulps_work_callback);
>
> + 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 = !!(client->mode_flags & MIPI_DSI_MODE_ULPS_IDLE);
> - dsi_set_ulps_auto(dsi, true);
>
> dsi_bus_unlock(dsi);
> return 0;
> diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c
> b/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c
> index 31502857f013..05ac2e1cd77e 100644
> --- a/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c
> +++ b/drivers/gpu/drm/omapdrm/dss/omapdss-boot-init.c
> @@ -176,7 +176,6 @@ static const struct of_device_id omapdss_of_match[]
> __initconst = {
> static const struct of_device_id omapdss_of_fixups_whitelist[] __initconst = {
> { .compatible = "composite-video-connector" },
> { .compatible = "hdmi-connector" },
> - { .compatible = "panel-dsi-cm" },
> { .compatible = "svideo-connector" },
> { .compatible = "ti,opa362" },
> { .compatible = "ti,tpd12s015" },
> diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h
> b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> index 21601af29ee4..bfb402a88475 100644
> --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
> +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> @@ -122,11 +122,6 @@ enum omap_dss_dsi_mode {
> OMAP_DSS_DSI_VIDEO_MODE,
> };
>
> -enum omap_display_caps {
> - OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE = 1 << 0,
> - OMAP_DSS_DISPLAY_CAP_TEAR_ELIM = 1 << 1,
> -};
> -
> enum omap_dss_display_state {
> OMAP_DSS_DISPLAY_DISABLED = 0,
> OMAP_DSS_DISPLAY_ACTIVE,
> @@ -288,14 +283,7 @@ struct omapdss_hdmi_ops {
>
> struct omapdss_dsi_ops {
> int (*update)(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);
> + bool (*is_video_mode)(struct omap_dss_device *dssdev);
> };
>
> struct omap_dss_device_ops {
> @@ -374,13 +362,10 @@ struct omap_dss_device {
>
> const char *name;
>
> - const struct omap_dss_driver *driver;
> const struct omap_dss_device_ops *ops;
> unsigned long ops_flags;
> u32 bus_flags;
>
> - enum omap_display_caps caps;
> -
> enum omap_dss_display_state state;
>
> /* OMAP DSS output specific fields */
> @@ -395,11 +380,6 @@ struct omap_dss_device {
> unsigned int of_ports;
> };
>
> -struct omap_dss_driver {
> - int (*update)(struct omap_dss_device *dssdev,
> - u16 x, u16 y, u16 w, u16 h);
> -};
> -
> struct dss_device *omapdss_get_dss(void);
> void omapdss_set_dss(struct dss_device *dss);
> static inline bool omapdss_is_initialized(void)
> diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c
> b/drivers/gpu/drm/omapdrm/omap_crtc.c
> index a8d0543d1296..80ed1b15ba49 100644
> --- a/drivers/gpu/drm/omapdrm/omap_crtc.c
> +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
> @@ -495,8 +495,7 @@ static enum drm_mode_status omap_crtc_mode_valid(struct
> drm_crtc *crtc,
> * valid DISPC mode. DSI will calculate and configure the
> * proper DISPC mode later.
> */
> - if (omap_crtc->pipe->output->next == NULL ||
> - omap_crtc->pipe->output->next->type != OMAP_DISPLAY_TYPE_DSI) {
> + if (omap_crtc->pipe->output->type != OMAP_DISPLAY_TYPE_DSI) {
> r = priv->dispc_ops->mgr_check_timings(priv->dispc,
> omap_crtc->channel,
> &vm);
> @@ -548,17 +547,17 @@ static void omap_crtc_mode_set_nofb(struct drm_crtc
> *crtc)
> static bool omap_crtc_is_manually_updated(struct drm_crtc *crtc)
> {
> struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
> - struct omap_dss_device *display = omap_crtc->pipe->output->next;
> + struct omap_dss_device *dssdev = omap_crtc->pipe->output;
>
> - if (!display)
> + if (dssdev->type != OMAP_DISPLAY_TYPE_DSI ||
> + !dssdev->ops->dsi.is_video_mode)
> return false;
>
> - if (display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
> - DBG("detected manually updated display!");
> - return true;
> - }
> + if (dssdev->ops->dsi.is_video_mode(dssdev))
> + return false;
>
> - return false;
> + DBG("detected manually updated display!");
> + return true;
> }
>
> static int omap_crtc_atomic_check(struct drm_crtc *crtc,
> --
> 2.24.0
>
Otherwise the patches compile fine and my work-in progress
DSI panel driver is probing, but not initializing.
BR,
Nikolaus
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