diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 15:51:32 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-09 15:51:32 -0700 |
commit | 5f097cd249f00683442c3e265d6f27d80fc83563 (patch) | |
tree | 6b354913fcb2a099aa26e017895e1e6fdf6385e2 /drivers/video/omap2/displays-new/encoder-tfp410.c | |
parent | a82a729f04232ccd0b59406574ba4cf20027a49d (diff) | |
parent | 1b6c79361ba5ce30b40f0f7d6fc2421dc5fcbe0c (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.c | 267 |
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"); |