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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-09 15:51:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-09 15:51:32 -0700
commit5f097cd249f00683442c3e265d6f27d80fc83563 (patch)
tree6b354913fcb2a099aa26e017895e1e6fdf6385e2 /drivers/video/omap2/displays-new/encoder-tfp410.c
parenta82a729f04232ccd0b59406574ba4cf20027a49d (diff)
parent1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c (diff)
Merge tag 'fbdev-for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/plagnioj/linux-fbdev
Pull fbdev update from Jean-Christophe PLAGNIOL-VILLARD: "Various fbdev changes for 3.11 - xilinxfb updates - Small cleanups and fixes to multiple drivers - OMAP display subsystem bug updates - imxfb dt support" * tag 'fbdev-for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/plagnioj/linux-fbdev: (95 commits) video: imxfb: Add DT support video: i740fb: Make i740fb_init static fb: make fp_get_options name argument const video: mmp: fix graphics/video layer enable/mask swap issue video: mmp: fix memcpy wrong size for mmp_addr issue radeon: use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM) aty128fb: use pdev->pm_cap instead of pci_find_capability(..,PCI_CAP_ID_PM) video: of_display_timing.h: Declare 'display_timing' fbdev: bfin-lq035q1-fb: Use dev_pm_ops fbmem: return -EFAULT on copy_to_user() failure OMAPDSS: DPI: Fix wrong pixel clock limit video: replace strict_strtoul() with kstrtoul() uvesafb: Correct/simplify warning message fb: fix atyfb unused data warnings fb: fix atyfb build warning video: imxfb: Make local symbols static video: udlfb: Make local symbol static video: udlfb: Use NULL instead of 0 video: smscufx: Use NULL instead of 0 video: remove unnecessary platform_set_drvdata() ...
Diffstat (limited to 'drivers/video/omap2/displays-new/encoder-tfp410.c')
-rw-r--r--drivers/video/omap2/displays-new/encoder-tfp410.c267
1 files changed, 267 insertions, 0 deletions
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 00000000000..a04f65856d6
--- /dev/null
+++ b/drivers/video/omap2/displays-new/encoder-tfp410.c
@@ -0,0 +1,267 @@
+/*
+ * TFP410 DPI-to-DVI encoder 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 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;
+
+ pdata = dev_get_platdata(&pdev->dev);
+
+ ddata->pd_gpio = pdata->power_down_gpio;
+
+ 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;
+ }
+
+ if (gpio_is_valid(ddata->pd_gpio)) {
+ r = devm_gpio_request_one(&pdev->dev, ddata->pd_gpio,
+ GPIOF_OUT_INIT_LOW, "tfp410 PD");
+ if (r) {
+ dev_err(&pdev->dev, "Failed to request PD GPIO %d\n",
+ ddata->pd_gpio);
+ goto err_gpio;
+ }
+ }
+
+ 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:
+err_gpio:
+ 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@ti.com>");
+MODULE_DESCRIPTION("TFP410 DPI to DVI encoder driver");
+MODULE_LICENSE("GPL");