From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: linux-fbdev@vger.kernel.org, linux-omap@vger.kernel.org,
Archit Taneja <archit@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Subject: [PATCH 21/27] OMAPDSS: Add new simple DPI panel driver
Date: Thu, 30 May 2013 09:36:14 +0000 [thread overview]
Message-ID: <1369906580-27585-22-git-send-email-tomi.valkeinen@ti.com> (raw)
In-Reply-To: <1369906580-27585-1-git-send-email-tomi.valkeinen@ti.com>
Add simple DPI Panel driver which uses the new DSS device model and DSS
ops. A "simple" panel means one that does not require any special setup.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---
drivers/video/omap2/displays-new/Kconfig | 5 +
drivers/video/omap2/displays-new/Makefile | 1 +
drivers/video/omap2/displays-new/panel-dpi.c | 270 +++++++++++++++++++++++++++
3 files changed, 276 insertions(+)
create mode 100644 drivers/video/omap2/displays-new/panel-dpi.c
diff --git a/drivers/video/omap2/displays-new/Kconfig b/drivers/video/omap2/displays-new/Kconfig
index 5326638..1435f2f 100644
--- a/drivers/video/omap2/displays-new/Kconfig
+++ b/drivers/video/omap2/displays-new/Kconfig
@@ -28,4 +28,9 @@ config DISPLAY_CONNECTOR_ANALOG_TV
help
Driver for a generic analog TV connector.
+config PANEL_DPI
+ tristate "Generic DPI panel"
+ help
+ Driver for generic DPI panels.
+
endmenu
diff --git a/drivers/video/omap2/displays-new/Makefile b/drivers/video/omap2/displays-new/Makefile
index 083bf08..54002d3 100644
--- a/drivers/video/omap2/displays-new/Makefile
+++ b/drivers/video/omap2/displays-new/Makefile
@@ -3,3 +3,4 @@ obj-$(CONFIG_DISPLAY_ENCODER_TPD12S015) += encoder-tpd12s015.o
obj-$(CONFIG_DISPLAY_CONNECTOR_DVI) += connector-dvi.o
obj-$(CONFIG_DISPLAY_CONNECTOR_HDMI) += connector-hdmi.o
obj-$(CONFIG_DISPLAY_CONNECTOR_ANALOG_TV) += connector-analog-tv.o
+obj-$(CONFIG_PANEL_DPI) += panel-dpi.o
diff --git a/drivers/video/omap2/displays-new/panel-dpi.c b/drivers/video/omap2/displays-new/panel-dpi.c
new file mode 100644
index 0000000..5f8f7e7
--- /dev/null
+++ b/drivers/video/omap2/displays-new/panel-dpi.c
@@ -0,0 +1,270 @@
+/*
+ * Generic MIPI DPI Panel Driver
+ *
+ * Copyright (C) 2013 Texas Instruments
+ * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <video/omapdss.h>
+#include <video/omap-panel-data.h>
+
+struct panel_drv_data {
+ struct omap_dss_device dssdev;
+ struct omap_dss_device *in;
+
+ int data_lines;
+
+ struct omap_video_timings videomode;
+
+ int backlight_gpio;
+ int enable_gpio;
+};
+
+#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
+
+static int panel_dpi_connect(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+ int r;
+
+ if (omapdss_device_is_connected(dssdev))
+ return 0;
+
+ r = in->ops.dpi->connect(in, dssdev);
+ if (r)
+ return r;
+
+ return 0;
+}
+
+static void panel_dpi_disconnect(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ if (!omapdss_device_is_connected(dssdev))
+ return;
+
+ in->ops.dpi->disconnect(in, dssdev);
+}
+
+static int panel_dpi_enable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+ int r;
+
+ if (!omapdss_device_is_connected(dssdev))
+ return -ENODEV;
+
+ if (omapdss_device_is_enabled(dssdev))
+ return 0;
+
+ in->ops.dpi->set_data_lines(in, ddata->data_lines);
+ in->ops.dpi->set_timings(in, &ddata->videomode);
+
+ r = in->ops.dpi->enable(in);
+ if (r)
+ return r;
+
+ if (gpio_is_valid(ddata->enable_gpio))
+ gpio_set_value_cansleep(ddata->enable_gpio, 1);
+
+ if (gpio_is_valid(ddata->backlight_gpio))
+ gpio_set_value_cansleep(ddata->backlight_gpio, 1);
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return 0;
+}
+
+static void panel_dpi_disable(struct omap_dss_device *dssdev)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ if (!omapdss_device_is_enabled(dssdev))
+ return;
+
+ if (gpio_is_valid(ddata->enable_gpio))
+ gpio_set_value_cansleep(ddata->enable_gpio, 0);
+
+ if (gpio_is_valid(ddata->backlight_gpio))
+ gpio_set_value_cansleep(ddata->backlight_gpio, 0);
+
+ in->ops.dpi->disable(in);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static void panel_dpi_set_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ ddata->videomode = *timings;
+ dssdev->panel.timings = *timings;
+
+ in->ops.dpi->set_timings(in, timings);
+}
+
+static void panel_dpi_get_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+ *timings = ddata->videomode;
+}
+
+static int panel_dpi_check_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ return in->ops.dpi->check_timings(in, timings);
+}
+
+static struct omap_dss_driver panel_dpi_ops = {
+ .connect = panel_dpi_connect,
+ .disconnect = panel_dpi_disconnect,
+
+ .enable = panel_dpi_enable,
+ .disable = panel_dpi_disable,
+
+ .set_timings = panel_dpi_set_timings,
+ .get_timings = panel_dpi_get_timings,
+ .check_timings = panel_dpi_check_timings,
+
+ .get_resolution = omapdss_default_get_resolution,
+};
+
+static int panel_dpi_probe_pdata(struct platform_device *pdev)
+{
+ const struct panel_dpi_platform_data *pdata;
+ struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+ struct omap_dss_device *dssdev, *in;
+ struct videomode vm;
+
+ pdata = dev_get_platdata(&pdev->dev);
+
+ in = omap_dss_find_output(pdata->source);
+ if (in = NULL) {
+ dev_err(&pdev->dev, "failed to find video source '%s'\n",
+ pdata->source);
+ return -EPROBE_DEFER;
+ }
+
+ ddata->in = in;
+
+ ddata->data_lines = pdata->data_lines;
+
+ videomode_from_timing(pdata->display_timing, &vm);
+ videomode_to_omap_video_timings(&vm, &ddata->videomode);
+
+ dssdev = &ddata->dssdev;
+ dssdev->name = pdata->name;
+
+ ddata->enable_gpio = pdata->enable_gpio;
+ ddata->backlight_gpio = pdata->backlight_gpio;
+
+ return 0;
+}
+
+static int panel_dpi_probe(struct platform_device *pdev)
+{
+ struct panel_drv_data *ddata;
+ struct omap_dss_device *dssdev;
+ int r;
+
+ ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
+ if (ddata = NULL)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, ddata);
+
+ if (dev_get_platdata(&pdev->dev)) {
+ r = panel_dpi_probe_pdata(pdev);
+ if (r)
+ return r;
+ } else {
+ return -ENODEV;
+ }
+
+ if (gpio_is_valid(ddata->enable_gpio)) {
+ r = devm_gpio_request_one(&pdev->dev, ddata->enable_gpio,
+ GPIOF_OUT_INIT_LOW, "panel enable");
+ if (r)
+ goto err_gpio;
+ }
+
+ if (gpio_is_valid(ddata->backlight_gpio)) {
+ r = devm_gpio_request_one(&pdev->dev, ddata->backlight_gpio,
+ GPIOF_OUT_INIT_LOW, "panel backlight");
+ if (r)
+ goto err_gpio;
+ }
+
+ dssdev = &ddata->dssdev;
+ dssdev->dev = &pdev->dev;
+ dssdev->driver = &panel_dpi_ops;
+ dssdev->type = OMAP_DISPLAY_TYPE_DPI;
+ dssdev->owner = THIS_MODULE;
+ dssdev->panel.timings = ddata->videomode;
+ dssdev->phy.dpi.data_lines = ddata->data_lines;
+
+ r = omapdss_register_display(dssdev);
+ if (r) {
+ dev_err(&pdev->dev, "Failed to register panel\n");
+ goto err_reg;
+ }
+
+ return 0;
+
+err_reg:
+err_gpio:
+ omap_dss_put_device(ddata->in);
+ return r;
+}
+
+static int __exit panel_dpi_remove(struct platform_device *pdev)
+{
+ struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+ struct omap_dss_device *dssdev = &ddata->dssdev;
+ struct omap_dss_device *in = ddata->in;
+
+ omapdss_unregister_display(dssdev);
+
+ panel_dpi_disable(dssdev);
+ panel_dpi_disconnect(dssdev);
+
+ omap_dss_put_device(in);
+
+ return 0;
+}
+
+static struct platform_driver panel_dpi_driver = {
+ .probe = panel_dpi_probe,
+ .remove = __exit_p(panel_dpi_remove),
+ .driver = {
+ .name = "panel-dpi",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(panel_dpi_driver);
+
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
+MODULE_DESCRIPTION("Generic MIPI DPI Panel Driver");
+MODULE_LICENSE("GPL");
--
1.8.1.2
next prev parent reply other threads:[~2013-05-30 9:36 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-30 9:35 [PATCH 00/27] OMAPDSS: dss-dev-model (Part 2/2) Tomi Valkeinen
2013-05-30 9:35 ` [PATCH 01/27] OMAPDSS: public omapdss_register_output() Tomi Valkeinen
2013-05-30 9:35 ` [PATCH 02/27] OMAPDSS: modify get/find functions to go through the device chain Tomi Valkeinen
2013-05-30 9:35 ` [PATCH 03/27] OMAPDSS: add platform data structs for new panel drivers Tomi Valkeinen
2013-05-30 9:35 ` [PATCH 04/27] ARM: OMAP: dss-common: use new display drivers Tomi Valkeinen
2013-05-30 9:35 ` [PATCH 05/27] ARM: OMAP: overo: " Tomi Valkeinen
2013-05-30 9:35 ` [PATCH 06/27] ARM: OMAP: rx51: " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 07/27] ARM: OMAP: beagle: " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 08/27] OMAPDSS: add OMAP_DISPLAY_TYPE_DVI Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 09/27] drm/omap: DVI connector fix Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 10/27] OMAPDSS: DPI: Add ops Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 11/27] OMAPDSS: SDI: " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 12/27] OMAPDSS: DVI: " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 13/27] OMAPDSS: AnalogTV: " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 14/27] OMAPDSS: HDMI: " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 15/27] OMAPDSS: DSI: " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 16/27] OMAPDSS: Add new TFP410 Encoder driver Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 17/27] OMAPDSS: Add new TPD12S015 " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 18/27] OMAPDSS: Add new DVI Connector driver Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 19/27] OMAPDSS: Add new HDMI " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 20/27] OMAPDSS: Add new Analog TV " Tomi Valkeinen
2013-05-30 9:36 ` Tomi Valkeinen [this message]
2013-05-30 9:36 ` [PATCH 22/27] OMAPDSS: Add new DSI Command Mode panel driver Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 23/27] OMAPDSS: Add Sony ACX565AKM " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 24/27] OMAPDSS: Add LG.Philips LB035Q02 " Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 25/27] ARM: OMAP: fix dsi regulator names Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 26/27] ARM: OMAP: add vdds_dsi supply for dpi.0 Tomi Valkeinen
2013-05-30 9:36 ` [PATCH 27/27] ARM: OMAP: add vdds_sdi supply for sdi.0 Tomi Valkeinen
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