Add TFP410 DPI-to-DVI Encoder driver which uses the new DSS device
model and DSS ops.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/video/omap2/Kconfig | 1 +
drivers/video/omap2/Makefile | 1 +
drivers/video/omap2/displays-new/Kconfig | 9 +
drivers/video/omap2/displays-new/Makefile | 1 +
drivers/video/omap2/displays-new/encoder-tfp410.c | 270 ++++++++++++++++++++++
5 files changed, 282 insertions(+)
create mode 100644 drivers/video/omap2/displays-new/Kconfig
create mode 100644 drivers/video/omap2/displays-new/Makefile
create mode 100644 drivers/video/omap2/displays-new/encoder-tfp410.c
diff --git a/drivers/video/omap2/Kconfig b/drivers/video/omap2/Kconfig
index b07b2b0..56cad0f 100644
--- a/drivers/video/omap2/Kconfig
+++ b/drivers/video/omap2/Kconfig
@@ -6,5 +6,6 @@ if ARCH_OMAP2PLUS
source "drivers/video/omap2/dss/Kconfig"
source "drivers/video/omap2/omapfb/Kconfig"
source "drivers/video/omap2/displays/Kconfig"
+source "drivers/video/omap2/displays-new/Kconfig"
endif
diff --git a/drivers/video/omap2/Makefile b/drivers/video/omap2/Makefile
index 296e5c5..86873c2 100644
--- a/drivers/video/omap2/Makefile
+++ b/drivers/video/omap2/Makefile
@@ -2,4 +2,5 @@ obj-$(CONFIG_OMAP2_VRFB) += vrfb.o
obj-$(CONFIG_OMAP2_DSS) += dss/
obj-y += displays/
+obj-y += displays-new/
obj-$(CONFIG_FB_OMAP2) += omapfb/
diff --git a/drivers/video/omap2/displays-new/Kconfig b/drivers/video/omap2/displays-new/Kconfig
new file mode 100644
index 0000000..92c2324
--- /dev/null
+++ b/drivers/video/omap2/displays-new/Kconfig
@@ -0,0 +1,9 @@
+menu "OMAP Display Device Drivers"
+ depends on OMAP2_DSS
+
+config DISPLAY_ENCODER_TFP410
+ tristate "TFP410 DPI to DVI Encoder"
+ help
+ Driver for TFP410 DPI to DVI encoder.
+
+endmenu
diff --git a/drivers/video/omap2/displays-new/Makefile b/drivers/video/omap2/displays-new/Makefile
new file mode 100644
index 0000000..b0d3457
--- /dev/null
+++ b/drivers/video/omap2/displays-new/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_DISPLAY_ENCODER_TFP410) += encoder-tfp410.o
diff --git a/drivers/video/omap2/displays-new/encoder-tfp410.c b/drivers/video/omap2/displays-new/encoder-tfp410.c
new file mode 100644
index 0000000..5fff526
--- /dev/null
+++ b/drivers/video/omap2/displays-new/encoder-tfp410.c
@@ -0,0 +1,270 @@
+/*
+ * TFP410 DPI-to-DVI encoder driver
+ *
+ * Copyright (C) 2013 Texas Instruments
+ * Author: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
+ *
+ * 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 pd_gpio;
+ int data_lines;
+
+ struct omap_video_timings timings;
+};
+
+#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
+
+static int tfp410_connect(struct omap_dss_device *dssdev,
+ struct omap_dss_device *dst)
+{
+ 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 -EBUSY;
+
+ r = in->ops.dpi->connect(in, dssdev);
+ if (r)
+ return r;
+
+ dst->output = dssdev;
+ dssdev->device = dst;
+
+ return 0;
+}
+
+static void tfp410_disconnect(struct omap_dss_device *dssdev,
+ struct omap_dss_device *dst)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+ struct omap_dss_device *in = ddata->in;
+
+ WARN_ON(!omapdss_device_is_connected(dssdev));
+ if (!omapdss_device_is_connected(dssdev))
+ return;
+
+ WARN_ON(dst != dssdev->device);
+ if (dst != dssdev->device)
+ return;
+
+ dst->output = NULL;
+ dssdev->device = NULL;
+
+ in->ops.dpi->disconnect(in, &ddata->dssdev);
+}
+
+static int tfp410_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_timings(in, &ddata->timings);
+ in->ops.dpi->set_data_lines(in, ddata->data_lines);
+
+ r = in->ops.dpi->enable(in);
+ if (r)
+ return r;
+
+ if (gpio_is_valid(ddata->pd_gpio))
+ gpio_set_value_cansleep(ddata->pd_gpio, 1);
+
+ dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
+ return 0;
+}
+
+static void tfp410_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->pd_gpio))
+ gpio_set_value_cansleep(ddata->pd_gpio, 0);
+
+ in->ops.dpi->disable(in);
+
+ dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
+}
+
+static void tfp410_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->timings = *timings;
+ dssdev->panel.timings = *timings;
+
+ in->ops.dpi->set_timings(in, timings);
+}
+
+static void tfp410_get_timings(struct omap_dss_device *dssdev,
+ struct omap_video_timings *timings)
+{
+ struct panel_drv_data *ddata = to_panel_data(dssdev);
+
+ *timings = ddata->timings;
+}
+
+static int tfp410_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 const struct omapdss_dvi_ops tfp410_dvi_ops = {
+ .connect = tfp410_connect,
+ .disconnect = tfp410_disconnect,
+
+ .enable = tfp410_enable,
+ .disable = tfp410_disable,
+
+ .check_timings = tfp410_check_timings,
+ .set_timings = tfp410_set_timings,
+ .get_timings = tfp410_get_timings,
+};
+
+static int tfp410_probe_pdata(struct platform_device *pdev)
+{
+ struct panel_drv_data *ddata = platform_get_drvdata(pdev);
+ struct encoder_tfp410_platform_data *pdata;
+ struct omap_dss_device *dssdev, *in;
+ int r, gpio;
+
+ pdata = dev_get_platdata(&pdev->dev);
+ gpio = pdata->power_down_gpio;
+
+ if (gpio_is_valid(gpio)) {
+ r = devm_gpio_request_one(&pdev->dev, gpio,
+ GPIOF_OUT_INIT_LOW, "tfp410 pd");
+ if (r) {
+ dev_err(&pdev->dev, "Failed to request PD GPIO %d\n",
+ gpio);
+ return r;
+ }
+
+ ddata->pd_gpio = gpio;
+ } else {
+ ddata->pd_gpio = -1;
+ }
+
+ ddata->data_lines = pdata->data_lines;
+
+ in = omap_dss_find_output(pdata->source);
+ if (in == NULL) {
+ dev_err(&pdev->dev, "Failed to find video source\n");
+ return -ENODEV;
+ }
+
+ ddata->in = in;
+
+ dssdev = &ddata->dssdev;
+ dssdev->name = pdata->name;
+
+ return 0;
+}
+
+static int tfp410_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)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, ddata);
+
+ if (dev_get_platdata(&pdev->dev)) {
+ r = tfp410_probe_pdata(pdev);
+ if (r)
+ return r;
+ } else {
+ return -ENODEV;
+ }
+
+ dssdev = &ddata->dssdev;
+ dssdev->ops.dvi = &tfp410_dvi_ops;
+ dssdev->dev = &pdev->dev;
+ dssdev->type = OMAP_DISPLAY_TYPE_DPI;
+ dssdev->output_type = OMAP_DISPLAY_TYPE_DVI;
+ dssdev->owner = THIS_MODULE;
+ dssdev->phy.dpi.data_lines = ddata->data_lines;
+
+ r = omapdss_register_output(dssdev);
+ if (r) {
+ dev_err(&pdev->dev, "Failed to register output\n");
+ goto err_reg;
+ }
+
+ return 0;
+err_reg:
+ omap_dss_put_device(ddata->in);
+ return r;
+}
+
+static int __exit tfp410_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_output(&ddata->dssdev);
+
+ WARN_ON(omapdss_device_is_enabled(dssdev));
+ if (omapdss_device_is_enabled(dssdev))
+ tfp410_disable(dssdev);
+
+ WARN_ON(omapdss_device_is_connected(dssdev));
+ if (omapdss_device_is_connected(dssdev))
+ tfp410_disconnect(dssdev, dssdev->device);
+
+ omap_dss_put_device(in);
+
+ return 0;
+}
+
+static struct platform_driver tfp410_driver = {
+ .probe = tfp410_probe,
+ .remove = __exit_p(tfp410_remove),
+ .driver = {
+ .name = "tfp410",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(tfp410_driver);
+
+MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@xxxxxx>");
+MODULE_DESCRIPTION("TFP410 DPI to DVI encoder driver");
+MODULE_LICENSE("GPL");
--
1.8.1.2
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
