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Date: Thu, 30 Nov 2017 18:28:50 -0800
From: Brian Norris <briannorris@...omium.org>
To: Lin Huang <hl@...k-chips.com>
Cc: thierry.reding@...il.com, zyw@...k-chips.com,
seanpaul@...omium.org, nickey.yang@...k-chips.com,
airlied@...ux.ie, dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
Derek Basehore <dbasehore@...omium.org>
Subject: Re: [RESENT PATCH] drm/panel: support Innolux P097PFG panel
+ Derek
On Thu, Nov 30, 2017 at 02:14:40PM +0800, Lin Huang wrote:
> Support Innolux P097PFG 9.7" 1536x2048 TFT LCD panel,
> it refactor Innolux P079ZCA panel driver, let it support
> multi panel, and add support P097PFG panel in this driver.
>
> Signed-off-by: Lin Huang <hl@...k-chips.com>
>
> ---
> drivers/gpu/drm/panel/panel-innolux-p079zca.c | 178 ++++++++++++++++++++------
> 1 file changed, 136 insertions(+), 42 deletions(-)
You'll want to add this to the device tree bindings.
Brian
>
> diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> index 6ba9344..a40798f 100644
> --- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> +++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> @@ -20,12 +20,32 @@
>
> #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;
> +};
> +
> +struct panel_desc_dsi {
> + struct panel_desc desc;
> +
> + 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_dsi *dsi_desc;
>
> struct backlight_device *backlight;
> - struct regulator *supply;
> + struct regulator *vddi;
> + struct regulator *avdd;
> + struct regulator *avee;
> struct gpio_desc *enable_gpio;
>
> bool prepared;
> @@ -78,9 +98,9 @@ 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;
>
> @@ -97,10 +117,18 @@ static int innolux_panel_prepare(struct drm_panel *panel)
>
> 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);
>
> @@ -134,12 +162,13 @@ 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;
> }
>
> @@ -164,7 +193,7 @@ 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,
> @@ -177,15 +206,59 @@ static const struct drm_display_mode default_mode = {
> .vrefresh = 60,
> };
>
> +static const struct panel_desc_dsi innolux_p079zca_panel_desc = {
> + .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 const struct drm_display_mode innolux_p097pfg_mode = {
> + .clock = 220000,
> + .hdisplay = 1536,
> + .hsync_start = 1536 + 100,
> + .hsync_end = 1536 + 100 + 24,
> + .htotal = 1536 + 100 + 24 + 100,
> + .vdisplay = 2048,
> + .vsync_start = 2048 + 18,
> + .vsync_end = 2048 + 18 + 2,
> + .vtotal = 2048 + 18 + 2 + 18,
> + .vrefresh = 60,
> +};
> +
> +static const struct panel_desc_dsi innolux_p097pfg_panel_desc = {
> + .desc = {
> + .modes = &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,
> + .lanes = 8,
> +};
> +
> 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->dsi_desc->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;
> }
>
> @@ -193,9 +266,11 @@ 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->dsi_desc->desc.size.width;
> + panel->connector->display_info.height_mm =
> + innolux->dsi_desc->desc.size.height;
> + panel->connector->display_info.bpc = innolux->dsi_desc->desc.bpc;
>
> return 1;
> }
> @@ -209,20 +284,39 @@ 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
> + },
> + { .compatible = "innolux,p097pfg",
> + .data = &innolux_p097pfg_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_dsi *desc)
> {
> - struct device *dev = &innolux->link->dev;
> + struct innolux_panel *innolux;
> + struct device *dev = &dsi->dev;
> struct device_node *np;
> 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->dsi_desc = desc;
> + innolux->vddi = devm_regulator_get_optional(dev, "power");
> + if (IS_ERR(innolux->vddi))
> + return PTR_ERR(innolux->vddi);
> +
> + innolux->avdd = devm_regulator_get(dev, "ppvarp");
> + if (IS_ERR(innolux->avdd))
> + return PTR_ERR(innolux->avdd);
> +
> + innolux->avee = devm_regulator_get(dev, "ppvarn");
> + if (IS_ERR(innolux->avee))
> + return PTR_ERR(innolux->avee);
>
> innolux->enable_gpio = devm_gpiod_get_optional(dev, "enable",
> GPIOD_OUT_HIGH);
> @@ -243,14 +337,16 @@ 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;
>
> - return 0;
> + dev_set_drvdata(dev, innolux);
> + innolux->link = dsi;
>
> + return 0;
> put_backlight:
> put_device(&innolux->backlight->dev);
>
> @@ -267,28 +363,25 @@ 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_dsi *dsi_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;
> + dsi_desc = id->data;
> + dsi->mode_flags = dsi_desc->flags;
> + dsi->format = dsi_desc->format;
> + dsi->lanes = dsi_desc->lanes;
>
> - err = innolux_panel_add(innolux);
> + err = innolux_panel_add(dsi, 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)
> @@ -326,7 +419,7 @@ static void innolux_panel_shutdown(struct mipi_dsi_device *dsi)
>
> static struct mipi_dsi_driver innolux_panel_driver = {
> .driver = {
> - .name = "panel-innolux-p079zca",
> + .name = "panel-innolux-dsi",
> .of_match_table = innolux_of_match,
> },
> .probe = innolux_panel_probe,
> @@ -336,5 +429,6 @@ 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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