diff options
Diffstat (limited to 'drivers/staging/msm/tvenc.c')
| -rw-r--r-- | drivers/staging/msm/tvenc.c | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/drivers/staging/msm/tvenc.c b/drivers/staging/msm/tvenc.c new file mode 100644 index 00000000000..f41c5ac22f2 --- /dev/null +++ b/drivers/staging/msm/tvenc.c @@ -0,0 +1,295 @@ +/* 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 IS_ERR(tvenc_clk); + } + + if (IS_ERR(tvdac_clk)) { + printk(KERN_ERR "error: can't get tvdac_clk!\n"); + return IS_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); |