drivers/staging/msm/tvenc.c - linux - Git at Google

 /* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
  * only version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  * 02110-1301, USA.
  */

 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/time.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
 #include <linux/delay.h>
 #include <mach/hardware.h>
 #include <linux/io.h>

 #include <asm/system.h>
 #include <asm/mach-types.h>
 #include <linux/semaphore.h>
 #include <linux/uaccess.h>
 #include <linux/clk.h>
 #include <linux/platform_device.h>
 #include <linux/pm_qos_params.h>

 #define TVENC_C
 #include "tvenc.h"
 #include "msm_fb.h"

 static int tvenc_probe(struct platform_device *pdev);
 static int tvenc_remove(struct platform_device *pdev);

 static int tvenc_off(struct platform_device *pdev);
 static int tvenc_on(struct platform_device *pdev);

 static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
 static int pdev_list_cnt;

 static struct clk *tvenc_clk;
 static struct clk *tvdac_clk;

 static struct platform_driver tvenc_driver = {
 	.probe = tvenc_probe,
 	.remove = tvenc_remove,
 	.suspend = NULL,
 //	.suspend_late = NULL,
 //	.resume_early = NULL,
 	.resume = NULL,
 	.shutdown = NULL,
 	.driver = {
 		   .name = "tvenc",
 		   },
 };

 static struct tvenc_platform_data *tvenc_pdata;

 static int tvenc_off(struct platform_device *pdev)
 {
 	int ret = 0;

 	ret = panel_next_off(pdev);

 	clk_disable(tvenc_clk);
 	clk_disable(tvdac_clk);

 	if (tvenc_pdata && tvenc_pdata->pm_vid_en)
 		ret = tvenc_pdata->pm_vid_en(0);

 	//pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
 	//				PM_QOS_DEFAULT_VALUE);

 	if (ret)
 		printk(KERN_ERR "%s: pm_vid_en(off) failed! %d\n",
 		__func__, ret);

 	return ret;
 }

 static int tvenc_on(struct platform_device *pdev)
 {
 	int ret = 0;

 //	pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
 //				128000);
 	if (tvenc_pdata && tvenc_pdata->pm_vid_en)
 		ret = tvenc_pdata->pm_vid_en(1);

 	if (ret) {
 		printk(KERN_ERR "%s: pm_vid_en(on) failed! %d\n",
 		__func__, ret);
 		return ret;
 	}

 	clk_enable(tvenc_clk);
 	clk_enable(tvdac_clk);

 	ret = panel_next_on(pdev);

 	return ret;
 }

 void tvenc_gen_test_pattern(struct msm_fb_data_type *mfd)
 {
 	uint32 reg = 0, i;

 	reg = readl(MSM_TV_ENC_CTL);
 	reg |= TVENC_CTL_TEST_PATT_EN;

 	for (i = 0; i < 3; i++) {
 		TV_OUT(TV_ENC_CTL, 0);	/* disable TV encoder */

 		switch (i) {
 			/*
 			 * TV Encoder - Color Bar Test Pattern
 			 */
 		case 0:
 			reg |= TVENC_CTL_TPG_CLRBAR;
 			break;
 			/*
 			 * TV Encoder - Red Frame Test Pattern
 			 */
 		case 1:
 			reg |= TVENC_CTL_TPG_REDCLR;
 			break;
 			/*
 			 * TV Encoder - Modulated Ramp Test Pattern
 			 */
 		default:
 			reg |= TVENC_CTL_TPG_MODRAMP;
 			break;
 		}

 		TV_OUT(TV_ENC_CTL, reg);
 		mdelay(5000);

 		switch (i) {
 			/*
 			 * TV Encoder - Color Bar Test Pattern
 			 */
 		case 0:
 			reg &= ~TVENC_CTL_TPG_CLRBAR;
 			break;
 			/*
 			 * TV Encoder - Red Frame Test Pattern
 			 */
 		case 1:
 			reg &= ~TVENC_CTL_TPG_REDCLR;
 			break;
 			/*
 			 * TV Encoder - Modulated Ramp Test Pattern
 			 */
 		default:
 			reg &= ~TVENC_CTL_TPG_MODRAMP;
 			break;
 		}
 	}
 }

 static int tvenc_resource_initialized;

 static int tvenc_probe(struct platform_device *pdev)
 {
 	struct msm_fb_data_type *mfd;
 	struct platform_device *mdp_dev = NULL;
 	struct msm_fb_panel_data *pdata = NULL;
 	int rc;

 	if (pdev->id == 0) {
 		tvenc_base = ioremap(pdev->resource[0].start,
 					pdev->resource[0].end -
 					pdev->resource[0].start + 1);
 		if (!tvenc_base) {
 			printk(KERN_ERR
 				"tvenc_base ioremap failed!\n");
 			return -ENOMEM;
 		}
 		tvenc_pdata = pdev->dev.platform_data;
 		tvenc_resource_initialized = 1;
 		return 0;
 	}

 	if (!tvenc_resource_initialized)
 		return -EPERM;

 	mfd = platform_get_drvdata(pdev);

 	if (!mfd)
 		return -ENODEV;

 	if (mfd->key != MFD_KEY)
 		return -EINVAL;

 	if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
 		return -ENOMEM;

 	if (tvenc_base == NULL)
 		return -ENOMEM;

 	mdp_dev = platform_device_alloc("mdp", pdev->id);
 	if (!mdp_dev)
 		return -ENOMEM;

 	/*
 	 * link to the latest pdev
 	 */
 	mfd->pdev = mdp_dev;
 	mfd->dest = DISPLAY_TV;

 	/*
 	 * alloc panel device data
 	 */
 	if (platform_device_add_data
 	    (mdp_dev, pdev->dev.platform_data,
 	     sizeof(struct msm_fb_panel_data))) {
 		printk(KERN_ERR "tvenc_probe: platform_device_add_data failed!\n");
 		platform_device_put(mdp_dev);
 		return -ENOMEM;
 	}
 	/*
 	 * data chain
 	 */
 	pdata = mdp_dev->dev.platform_data;
 	pdata->on = tvenc_on;
 	pdata->off = tvenc_off;
 	pdata->next = pdev;

 	/*
 	 * get/set panel specific fb info
 	 */
 	mfd->panel_info = pdata->panel_info;
 	mfd->fb_imgType = MDP_YCRYCB_H2V1;

 	/*
 	 * set driver data
 	 */
 	platform_set_drvdata(mdp_dev, mfd);

 	/*
 	 * register in mdp driver
 	 */
 	rc = platform_device_add(mdp_dev);
 	if (rc)
 		goto tvenc_probe_err;

 	pdev_list[pdev_list_cnt++] = pdev;
 	return 0;

 tvenc_probe_err:
 	platform_device_put(mdp_dev);
 	return rc;
 }

 static int tvenc_remove(struct platform_device *pdev)
 {
 //	pm_qos_remove_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc");
 	return 0;
 }

 static int tvenc_register_driver(void)
 {
 	return platform_driver_register(&tvenc_driver);
 }

 static int __init tvenc_driver_init(void)
 {
 	tvenc_clk = clk_get(NULL, "tv_enc_clk");
 	tvdac_clk = clk_get(NULL, "tv_dac_clk");

 	if (IS_ERR(tvenc_clk)) {
 		printk(KERN_ERR "error: can't get tvenc_clk!\n");
 		return PTR_ERR(tvenc_clk);
 	}

 	if (IS_ERR(tvdac_clk)) {
 		printk(KERN_ERR "error: can't get tvdac_clk!\n");
 		clk_put(tvenc_clk);
 		return PTR_ERR(tvdac_clk);
 	}

 //	pm_qos_add_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
 //				PM_QOS_DEFAULT_VALUE);
 	return tvenc_register_driver();
 }

 module_init(tvenc_driver_init);
	/* Copyright (c) 2008-2009, Code Aurora Forum. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 and
	* only version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	* 02110-1301, USA.
	*/

	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/sched.h>
	#include <linux/time.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/spinlock.h>
	#include <linux/delay.h>
	#include <mach/hardware.h>
	#include <linux/io.h>

	#include <asm/system.h>
	#include <asm/mach-types.h>
	#include <linux/semaphore.h>
	#include <linux/uaccess.h>
	#include <linux/clk.h>
	#include <linux/platform_device.h>
	#include <linux/pm_qos_params.h>

	#define TVENC_C
	#include "tvenc.h"
	#include "msm_fb.h"

	static int tvenc_probe(struct platform_device *pdev);
	static int tvenc_remove(struct platform_device *pdev);

	static int tvenc_off(struct platform_device *pdev);
	static int tvenc_on(struct platform_device *pdev);

	static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
	static int pdev_list_cnt;

	static struct clk *tvenc_clk;
	static struct clk *tvdac_clk;

	static struct platform_driver tvenc_driver = {
	.probe = tvenc_probe,
	.remove = tvenc_remove,
	.suspend = NULL,
	// .suspend_late = NULL,
	// .resume_early = NULL,
	.resume = NULL,
	.shutdown = NULL,
	.driver = {
	.name = "tvenc",
	},
	};

	static struct tvenc_platform_data *tvenc_pdata;

	static int tvenc_off(struct platform_device *pdev)
	{
	int ret = 0;

	ret = panel_next_off(pdev);

	clk_disable(tvenc_clk);
	clk_disable(tvdac_clk);

	if (tvenc_pdata && tvenc_pdata->pm_vid_en)
	ret = tvenc_pdata->pm_vid_en(0);

	//pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
	// PM_QOS_DEFAULT_VALUE);

	if (ret)
	printk(KERN_ERR "%s: pm_vid_en(off) failed! %d\n",
	__func__, ret);

	return ret;
	}

	static int tvenc_on(struct platform_device *pdev)
	{
	int ret = 0;

	// pm_qos_update_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
	// 128000);
	if (tvenc_pdata && tvenc_pdata->pm_vid_en)
	ret = tvenc_pdata->pm_vid_en(1);

	if (ret) {
	printk(KERN_ERR "%s: pm_vid_en(on) failed! %d\n",
	__func__, ret);
	return ret;
	}

	clk_enable(tvenc_clk);
	clk_enable(tvdac_clk);

	ret = panel_next_on(pdev);

	return ret;
	}

	void tvenc_gen_test_pattern(struct msm_fb_data_type *mfd)
	{
	uint32 reg = 0, i;

	reg = readl(MSM_TV_ENC_CTL);
	reg \|= TVENC_CTL_TEST_PATT_EN;

	for (i = 0; i < 3; i++) {
	TV_OUT(TV_ENC_CTL, 0); /* disable TV encoder */

	switch (i) {
	/*
	* TV Encoder - Color Bar Test Pattern
	*/
	case 0:
	reg \|= TVENC_CTL_TPG_CLRBAR;
	break;
	/*
	* TV Encoder - Red Frame Test Pattern
	*/
	case 1:
	reg \|= TVENC_CTL_TPG_REDCLR;
	break;
	/*
	* TV Encoder - Modulated Ramp Test Pattern
	*/
	default:
	reg \|= TVENC_CTL_TPG_MODRAMP;
	break;
	}

	TV_OUT(TV_ENC_CTL, reg);
	mdelay(5000);

	switch (i) {
	/*
	* TV Encoder - Color Bar Test Pattern
	*/
	case 0:
	reg &= ~TVENC_CTL_TPG_CLRBAR;
	break;
	/*
	* TV Encoder - Red Frame Test Pattern
	*/
	case 1:
	reg &= ~TVENC_CTL_TPG_REDCLR;
	break;
	/*
	* TV Encoder - Modulated Ramp Test Pattern
	*/
	default:
	reg &= ~TVENC_CTL_TPG_MODRAMP;
	break;
	}
	}
	}

	static int tvenc_resource_initialized;

	static int tvenc_probe(struct platform_device *pdev)
	{
	struct msm_fb_data_type *mfd;
	struct platform_device *mdp_dev = NULL;
	struct msm_fb_panel_data *pdata = NULL;
	int rc;

	if (pdev->id == 0) {
	tvenc_base = ioremap(pdev->resource[0].start,
	pdev->resource[0].end -
	pdev->resource[0].start + 1);
	if (!tvenc_base) {
	printk(KERN_ERR
	"tvenc_base ioremap failed!\n");
	return -ENOMEM;
	}
	tvenc_pdata = pdev->dev.platform_data;
	tvenc_resource_initialized = 1;
	return 0;
	}

	if (!tvenc_resource_initialized)
	return -EPERM;

	mfd = platform_get_drvdata(pdev);

	if (!mfd)
	return -ENODEV;

	if (mfd->key != MFD_KEY)
	return -EINVAL;

	if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
	return -ENOMEM;

	if (tvenc_base == NULL)
	return -ENOMEM;

	mdp_dev = platform_device_alloc("mdp", pdev->id);
	if (!mdp_dev)
	return -ENOMEM;

	/*
	* link to the latest pdev
	*/
	mfd->pdev = mdp_dev;
	mfd->dest = DISPLAY_TV;

	/*
	* alloc panel device data
	*/
	if (platform_device_add_data
	(mdp_dev, pdev->dev.platform_data,
	sizeof(struct msm_fb_panel_data))) {
	printk(KERN_ERR "tvenc_probe: platform_device_add_data failed!\n");
	platform_device_put(mdp_dev);
	return -ENOMEM;
	}
	/*
	* data chain
	*/
	pdata = mdp_dev->dev.platform_data;
	pdata->on = tvenc_on;
	pdata->off = tvenc_off;
	pdata->next = pdev;

	/*
	* get/set panel specific fb info
	*/
	mfd->panel_info = pdata->panel_info;
	mfd->fb_imgType = MDP_YCRYCB_H2V1;

	/*
	* set driver data
	*/
	platform_set_drvdata(mdp_dev, mfd);

	/*
	* register in mdp driver
	*/
	rc = platform_device_add(mdp_dev);
	if (rc)
	goto tvenc_probe_err;

	pdev_list[pdev_list_cnt++] = pdev;
	return 0;

	tvenc_probe_err:
	platform_device_put(mdp_dev);
	return rc;
	}

	static int tvenc_remove(struct platform_device *pdev)
	{
	// pm_qos_remove_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc");
	return 0;
	}

	static int tvenc_register_driver(void)
	{
	return platform_driver_register(&tvenc_driver);
	}

	static int __init tvenc_driver_init(void)
	{
	tvenc_clk = clk_get(NULL, "tv_enc_clk");
	tvdac_clk = clk_get(NULL, "tv_dac_clk");

	if (IS_ERR(tvenc_clk)) {
	printk(KERN_ERR "error: can't get tvenc_clk!\n");
	return PTR_ERR(tvenc_clk);
	}

	if (IS_ERR(tvdac_clk)) {
	printk(KERN_ERR "error: can't get tvdac_clk!\n");
	clk_put(tvenc_clk);
	return PTR_ERR(tvdac_clk);
	}

	// pm_qos_add_requirement(PM_QOS_SYSTEM_BUS_FREQ , "tvenc",
	// PM_QOS_DEFAULT_VALUE);
	return tvenc_register_driver();
	}

	module_init(tvenc_driver_init);