diff options
Diffstat (limited to 'drivers/media/video/s5p-tv/mixer_drv.c')
| -rw-r--r-- | drivers/media/video/s5p-tv/mixer_drv.c | 487 |
1 files changed, 0 insertions, 487 deletions
diff --git a/drivers/media/video/s5p-tv/mixer_drv.c b/drivers/media/video/s5p-tv/mixer_drv.c deleted file mode 100644 index edca06592883..000000000000 --- a/drivers/media/video/s5p-tv/mixer_drv.c +++ /dev/null @@ -1,487 +0,0 @@ -/* - * Samsung TV Mixer driver - * - * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. - * - * Tomasz Stanislawski, <t.stanislaws@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published - * by the Free Software Foundiation. either version 2 of the License, - * or (at your option) any later version - */ - -#include "mixer.h" - -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/io.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/fb.h> -#include <linux/delay.h> -#include <linux/pm_runtime.h> -#include <linux/clk.h> - -MODULE_AUTHOR("Tomasz Stanislawski, <t.stanislaws@samsung.com>"); -MODULE_DESCRIPTION("Samsung MIXER"); -MODULE_LICENSE("GPL"); - -/* --------- DRIVER PARAMETERS ---------- */ - -static struct mxr_output_conf mxr_output_conf[] = { - { - .output_name = "S5P HDMI connector", - .module_name = "s5p-hdmi", - .cookie = 1, - }, - { - .output_name = "S5P SDO connector", - .module_name = "s5p-sdo", - .cookie = 0, - }, -}; - -void mxr_get_mbus_fmt(struct mxr_device *mdev, - struct v4l2_mbus_framefmt *mbus_fmt) -{ - struct v4l2_subdev *sd; - int ret; - - mutex_lock(&mdev->mutex); - sd = to_outsd(mdev); - ret = v4l2_subdev_call(sd, video, g_mbus_fmt, mbus_fmt); - WARN(ret, "failed to get mbus_fmt for output %s\n", sd->name); - mutex_unlock(&mdev->mutex); -} - -void mxr_streamer_get(struct mxr_device *mdev) -{ - mutex_lock(&mdev->mutex); - ++mdev->n_streamer; - mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer); - if (mdev->n_streamer == 1) { - struct v4l2_subdev *sd = to_outsd(mdev); - struct v4l2_mbus_framefmt mbus_fmt; - struct mxr_resources *res = &mdev->res; - int ret; - - if (to_output(mdev)->cookie == 0) - clk_set_parent(res->sclk_mixer, res->sclk_dac); - else - clk_set_parent(res->sclk_mixer, res->sclk_hdmi); - mxr_reg_s_output(mdev, to_output(mdev)->cookie); - - ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mbus_fmt); - WARN(ret, "failed to get mbus_fmt for output %s\n", sd->name); - ret = v4l2_subdev_call(sd, video, s_stream, 1); - WARN(ret, "starting stream failed for output %s\n", sd->name); - - mxr_reg_set_mbus_fmt(mdev, &mbus_fmt); - mxr_reg_streamon(mdev); - ret = mxr_reg_wait4vsync(mdev); - WARN(ret, "failed to get vsync (%d) from output\n", ret); - } - mutex_unlock(&mdev->mutex); - mxr_reg_dump(mdev); - /* FIXME: what to do when streaming fails? */ -} - -void mxr_streamer_put(struct mxr_device *mdev) -{ - mutex_lock(&mdev->mutex); - --mdev->n_streamer; - mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer); - if (mdev->n_streamer == 0) { - int ret; - struct v4l2_subdev *sd = to_outsd(mdev); - - mxr_reg_streamoff(mdev); - /* vsync applies Mixer setup */ - ret = mxr_reg_wait4vsync(mdev); - WARN(ret, "failed to get vsync (%d) from output\n", ret); - ret = v4l2_subdev_call(sd, video, s_stream, 0); - WARN(ret, "stopping stream failed for output %s\n", sd->name); - } - WARN(mdev->n_streamer < 0, "negative number of streamers (%d)\n", - mdev->n_streamer); - mutex_unlock(&mdev->mutex); - mxr_reg_dump(mdev); -} - -void mxr_output_get(struct mxr_device *mdev) -{ - mutex_lock(&mdev->mutex); - ++mdev->n_output; - mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_output); - /* turn on auxiliary driver */ - if (mdev->n_output == 1) - v4l2_subdev_call(to_outsd(mdev), core, s_power, 1); - mutex_unlock(&mdev->mutex); -} - -void mxr_output_put(struct mxr_device *mdev) -{ - mutex_lock(&mdev->mutex); - --mdev->n_output; - mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_output); - /* turn on auxiliary driver */ - if (mdev->n_output == 0) - v4l2_subdev_call(to_outsd(mdev), core, s_power, 0); - WARN(mdev->n_output < 0, "negative number of output users (%d)\n", - mdev->n_output); - mutex_unlock(&mdev->mutex); -} - -int mxr_power_get(struct mxr_device *mdev) -{ - int ret = pm_runtime_get_sync(mdev->dev); - - /* returning 1 means that power is already enabled, - * so zero success be returned */ - if (IS_ERR_VALUE(ret)) - return ret; - return 0; -} - -void mxr_power_put(struct mxr_device *mdev) -{ - pm_runtime_put_sync(mdev->dev); -} - -/* --------- RESOURCE MANAGEMENT -------------*/ - -static int __devinit mxr_acquire_plat_resources(struct mxr_device *mdev, - struct platform_device *pdev) -{ - struct resource *res; - int ret; - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mxr"); - if (res == NULL) { - mxr_err(mdev, "get memory resource failed.\n"); - ret = -ENXIO; - goto fail; - } - - mdev->res.mxr_regs = ioremap(res->start, resource_size(res)); - if (mdev->res.mxr_regs == NULL) { - mxr_err(mdev, "register mapping failed.\n"); - ret = -ENXIO; - goto fail; - } - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vp"); - if (res == NULL) { - mxr_err(mdev, "get memory resource failed.\n"); - ret = -ENXIO; - goto fail_mxr_regs; - } - - mdev->res.vp_regs = ioremap(res->start, resource_size(res)); - if (mdev->res.vp_regs == NULL) { - mxr_err(mdev, "register mapping failed.\n"); - ret = -ENXIO; - goto fail_mxr_regs; - } - - res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "irq"); - if (res == NULL) { - mxr_err(mdev, "get interrupt resource failed.\n"); - ret = -ENXIO; - goto fail_vp_regs; - } - - ret = request_irq(res->start, mxr_irq_handler, 0, "s5p-mixer", mdev); - if (ret) { - mxr_err(mdev, "request interrupt failed.\n"); - goto fail_vp_regs; - } - mdev->res.irq = res->start; - - return 0; - -fail_vp_regs: - iounmap(mdev->res.vp_regs); - -fail_mxr_regs: - iounmap(mdev->res.mxr_regs); - -fail: - return ret; -} - -static void mxr_release_plat_resources(struct mxr_device *mdev) -{ - free_irq(mdev->res.irq, mdev); - iounmap(mdev->res.vp_regs); - iounmap(mdev->res.mxr_regs); -} - -static void mxr_release_clocks(struct mxr_device *mdev) -{ - struct mxr_resources *res = &mdev->res; - - if (!IS_ERR_OR_NULL(res->sclk_dac)) - clk_put(res->sclk_dac); - if (!IS_ERR_OR_NULL(res->sclk_hdmi)) - clk_put(res->sclk_hdmi); - if (!IS_ERR_OR_NULL(res->sclk_mixer)) - clk_put(res->sclk_mixer); - if (!IS_ERR_OR_NULL(res->vp)) - clk_put(res->vp); - if (!IS_ERR_OR_NULL(res->mixer)) - clk_put(res->mixer); -} - -static int mxr_acquire_clocks(struct mxr_device *mdev) -{ - struct mxr_resources *res = &mdev->res; - struct device *dev = mdev->dev; - - res->mixer = clk_get(dev, "mixer"); - if (IS_ERR_OR_NULL(res->mixer)) { - mxr_err(mdev, "failed to get clock 'mixer'\n"); - goto fail; - } - res->vp = clk_get(dev, "vp"); - if (IS_ERR_OR_NULL(res->vp)) { - mxr_err(mdev, "failed to get clock 'vp'\n"); - goto fail; - } - res->sclk_mixer = clk_get(dev, "sclk_mixer"); - if (IS_ERR_OR_NULL(res->sclk_mixer)) { - mxr_err(mdev, "failed to get clock 'sclk_mixer'\n"); - goto fail; - } - res->sclk_hdmi = clk_get(dev, "sclk_hdmi"); - if (IS_ERR_OR_NULL(res->sclk_hdmi)) { - mxr_err(mdev, "failed to get clock 'sclk_hdmi'\n"); - goto fail; - } - res->sclk_dac = clk_get(dev, "sclk_dac"); - if (IS_ERR_OR_NULL(res->sclk_dac)) { - mxr_err(mdev, "failed to get clock 'sclk_dac'\n"); - goto fail; - } - - return 0; -fail: - mxr_release_clocks(mdev); - return -ENODEV; -} - -static int __devinit mxr_acquire_resources(struct mxr_device *mdev, - struct platform_device *pdev) -{ - int ret; - ret = mxr_acquire_plat_resources(mdev, pdev); - - if (ret) - goto fail; - - ret = mxr_acquire_clocks(mdev); - if (ret) - goto fail_plat; - - mxr_info(mdev, "resources acquired\n"); - return 0; - -fail_plat: - mxr_release_plat_resources(mdev); -fail: - mxr_err(mdev, "resources acquire failed\n"); - return ret; -} - -static void mxr_release_resources(struct mxr_device *mdev) -{ - mxr_release_clocks(mdev); - mxr_release_plat_resources(mdev); - memset(&mdev->res, 0, sizeof mdev->res); -} - -static void mxr_release_layers(struct mxr_device *mdev) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(mdev->layer); ++i) - if (mdev->layer[i]) - mxr_layer_release(mdev->layer[i]); -} - -static int __devinit mxr_acquire_layers(struct mxr_device *mdev, - struct mxr_platform_data *pdata) -{ - mdev->layer[0] = mxr_graph_layer_create(mdev, 0); - mdev->layer[1] = mxr_graph_layer_create(mdev, 1); - mdev->layer[2] = mxr_vp_layer_create(mdev, 0); - - if (!mdev->layer[0] || !mdev->layer[1] || !mdev->layer[2]) { - mxr_err(mdev, "failed to acquire layers\n"); - goto fail; - } - - return 0; - -fail: - mxr_release_layers(mdev); - return -ENODEV; -} - -/* ---------- POWER MANAGEMENT ----------- */ - -static int mxr_runtime_resume(struct device *dev) -{ - struct mxr_device *mdev = to_mdev(dev); - struct mxr_resources *res = &mdev->res; - - mxr_dbg(mdev, "resume - start\n"); - mutex_lock(&mdev->mutex); - /* turn clocks on */ - clk_enable(res->mixer); - clk_enable(res->vp); - clk_enable(res->sclk_mixer); - /* apply default configuration */ - mxr_reg_reset(mdev); - mxr_dbg(mdev, "resume - finished\n"); - - mutex_unlock(&mdev->mutex); - return 0; -} - -static int mxr_runtime_suspend(struct device *dev) -{ - struct mxr_device *mdev = to_mdev(dev); - struct mxr_resources *res = &mdev->res; - mxr_dbg(mdev, "suspend - start\n"); - mutex_lock(&mdev->mutex); - /* turn clocks off */ - clk_disable(res->sclk_mixer); - clk_disable(res->vp); - clk_disable(res->mixer); - mutex_unlock(&mdev->mutex); - mxr_dbg(mdev, "suspend - finished\n"); - return 0; -} - -static const struct dev_pm_ops mxr_pm_ops = { - .runtime_suspend = mxr_runtime_suspend, - .runtime_resume = mxr_runtime_resume, -}; - -/* --------- DRIVER INITIALIZATION ---------- */ - -static int __devinit mxr_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct mxr_platform_data *pdata = dev->platform_data; - struct mxr_device *mdev; - int ret; - - /* mdev does not exist yet so no mxr_dbg is used */ - dev_info(dev, "probe start\n"); - - mdev = kzalloc(sizeof *mdev, GFP_KERNEL); - if (!mdev) { - mxr_err(mdev, "not enough memory.\n"); - ret = -ENOMEM; - goto fail; - } - - /* setup pointer to master device */ - mdev->dev = dev; - - mutex_init(&mdev->mutex); - spin_lock_init(&mdev->reg_slock); - init_waitqueue_head(&mdev->event_queue); - - /* acquire resources: regs, irqs, clocks, regulators */ - ret = mxr_acquire_resources(mdev, pdev); - if (ret) - goto fail_mem; - - /* configure resources for video output */ - ret = mxr_acquire_video(mdev, mxr_output_conf, - ARRAY_SIZE(mxr_output_conf)); - if (ret) - goto fail_resources; - - /* configure layers */ - ret = mxr_acquire_layers(mdev, pdata); - if (ret) - goto fail_video; - - pm_runtime_enable(dev); - - mxr_info(mdev, "probe successful\n"); - return 0; - -fail_video: - mxr_release_video(mdev); - -fail_resources: - mxr_release_resources(mdev); - -fail_mem: - kfree(mdev); - -fail: - dev_info(dev, "probe failed\n"); - return ret; -} - -static int __devexit mxr_remove(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct mxr_device *mdev = to_mdev(dev); - - pm_runtime_disable(dev); - - mxr_release_layers(mdev); - mxr_release_video(mdev); - mxr_release_resources(mdev); - - kfree(mdev); - - dev_info(dev, "remove successful\n"); - return 0; -} - -static struct platform_driver mxr_driver __refdata = { - .probe = mxr_probe, - .remove = __devexit_p(mxr_remove), - .driver = { - .name = MXR_DRIVER_NAME, - .owner = THIS_MODULE, - .pm = &mxr_pm_ops, - } -}; - -static int __init mxr_init(void) -{ - int i, ret; - static const char banner[] __initconst = KERN_INFO - "Samsung TV Mixer driver, " - "(c) 2010-2011 Samsung Electronics Co., Ltd.\n"; - printk(banner); - - /* Loading auxiliary modules */ - for (i = 0; i < ARRAY_SIZE(mxr_output_conf); ++i) - request_module(mxr_output_conf[i].module_name); - - ret = platform_driver_register(&mxr_driver); - if (ret != 0) { - printk(KERN_ERR "registration of MIXER driver failed\n"); - return -ENXIO; - } - - return 0; -} -module_init(mxr_init); - -static void __exit mxr_exit(void) -{ - platform_driver_unregister(&mxr_driver); -} -module_exit(mxr_exit); |