diff options
Diffstat (limited to 'drivers/staging/msm/ebi2_lcd.c')
| -rw-r--r-- | drivers/staging/msm/ebi2_lcd.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/drivers/staging/msm/ebi2_lcd.c b/drivers/staging/msm/ebi2_lcd.c new file mode 100644 index 000000000000..b41e1230ceca --- /dev/null +++ b/drivers/staging/msm/ebi2_lcd.c @@ -0,0 +1,250 @@ +/* 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/moduleparam.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/dma-mapping.h> +#include <linux/uaccess.h> +#include <linux/workqueue.h> +#include <linux/string.h> +#include <linux/version.h> +#include <linux/proc_fs.h> +#include <linux/vmalloc.h> +#include <linux/debugfs.h> + +#include "msm_fb.h" + +static int ebi2_lcd_probe(struct platform_device *pdev); +static int ebi2_lcd_remove(struct platform_device *pdev); + +static struct platform_driver ebi2_lcd_driver = { + .probe = ebi2_lcd_probe, + .remove = ebi2_lcd_remove, + .suspend = NULL, + .suspend_late = NULL, + .resume_early = NULL, + .resume = NULL, + .shutdown = NULL, + .driver = { + .name = "ebi2_lcd", + }, +}; + +static void *ebi2_base; +static void *ebi2_lcd_cfg0; +static void *ebi2_lcd_cfg1; +static void __iomem *lcd01_base; +static void __iomem *lcd02_base; +static int ebi2_lcd_resource_initialized; + +static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST]; +static int pdev_list_cnt; + +static int ebi2_lcd_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, i; + + if (pdev->id == 0) { + for (i = 0; i < pdev->num_resources; i++) { + if (!strncmp(pdev->resource[i].name, "base", 4)) { + ebi2_base = ioremap(pdev->resource[i].start, + pdev->resource[i].end - + pdev->resource[i].start + 1); + if (!ebi2_base) { + printk(KERN_ERR + "ebi2_base ioremap failed!\n"); + return -ENOMEM; + } + ebi2_lcd_cfg0 = (void *)(ebi2_base + 0x20); + ebi2_lcd_cfg1 = (void *)(ebi2_base + 0x24); + } else if (!strncmp(pdev->resource[i].name, + "lcd01", 5)) { + lcd01_base = ioremap(pdev->resource[i].start, + pdev->resource[i].end - + pdev->resource[i].start + 1); + if (!lcd01_base) { + printk(KERN_ERR + "lcd01_base ioremap failed!\n"); + return -ENOMEM; + } + } else if (!strncmp(pdev->resource[i].name, + "lcd02", 5)) { + lcd02_base = ioremap(pdev->resource[i].start, + pdev->resource[i].end - + pdev->resource[i].start + 1); + if (!lcd02_base) { + printk(KERN_ERR + "lcd02_base ioremap failed!\n"); + return -ENOMEM; + } + } + } + ebi2_lcd_resource_initialized = 1; + return 0; + } + + if (!ebi2_lcd_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 (ebi2_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_LCD; + + /* add panel data */ + if (platform_device_add_data + (mdp_dev, pdev->dev.platform_data, + sizeof(struct msm_fb_panel_data))) { + printk(KERN_ERR "ebi2_lcd_probe: platform_device_add_data failed!\n"); + platform_device_put(mdp_dev); + return -ENOMEM; + } + + /* data chain */ + pdata = mdp_dev->dev.platform_data; + pdata->on = panel_next_on; + pdata->off = panel_next_off; + pdata->next = pdev; + + /* get/set panel specific fb info */ + mfd->panel_info = pdata->panel_info; + + if (mfd->panel_info.bpp == 24) + mfd->fb_imgType = MDP_RGB_888; + else + mfd->fb_imgType = MDP_RGB_565; + + /* config msm ebi2 lcd register */ + if (mfd->panel_info.pdest == DISPLAY_1) { + outp32(ebi2_base, + (inp32(ebi2_base) & (~(EBI2_PRIM_LCD_CLR))) | + EBI2_PRIM_LCD_SEL); + /* + * current design has one set of cfg0/1 register to control + * both EBI2 channels. so, we're using the PRIM channel to + * configure both. + */ + outp32(ebi2_lcd_cfg0, mfd->panel_info.wait_cycle); + if (mfd->panel_info.bpp == 18) + outp32(ebi2_lcd_cfg1, 0x01000000); + else + outp32(ebi2_lcd_cfg1, 0x0); + } else { +#ifdef DEBUG_EBI2_LCD + /* + * confliting with QCOM SURF FPGA CS. + * OEM should enable below for their CS mapping + */ + outp32(ebi2_base, (inp32(ebi2_base)&(~(EBI2_SECD_LCD_CLR))) + |EBI2_SECD_LCD_SEL); +#endif + } + + /* + * map cs (chip select) address + */ + if (mfd->panel_info.pdest == DISPLAY_1) { + mfd->cmd_port = lcd01_base; + mfd->data_port = + (void *)((uint32) mfd->cmd_port + EBI2_PRIM_LCD_RS_PIN); + mfd->data_port_phys = + (void *)(LCD_PRIM_BASE_PHYS + EBI2_PRIM_LCD_RS_PIN); + } else { + mfd->cmd_port = lcd01_base; + mfd->data_port = + (void *)((uint32) mfd->cmd_port + EBI2_SECD_LCD_RS_PIN); + mfd->data_port_phys = + (void *)(LCD_SECD_BASE_PHYS + EBI2_SECD_LCD_RS_PIN); + } + + /* + * set driver data + */ + platform_set_drvdata(mdp_dev, mfd); + + /* + * register in mdp driver + */ + rc = platform_device_add(mdp_dev); + if (rc) { + goto ebi2_lcd_probe_err; + } + + pdev_list[pdev_list_cnt++] = pdev; + return 0; + + ebi2_lcd_probe_err: + platform_device_put(mdp_dev); + return rc; +} + +static int ebi2_lcd_remove(struct platform_device *pdev) +{ + struct msm_fb_data_type *mfd; + + mfd = (struct msm_fb_data_type *)platform_get_drvdata(pdev); + + if (!mfd) + return 0; + + if (mfd->key != MFD_KEY) + return 0; + + iounmap(mfd->cmd_port); + + return 0; +} + +static int ebi2_lcd_register_driver(void) +{ + return platform_driver_register(&ebi2_lcd_driver); +} + +static int __init ebi2_lcd_driver_init(void) +{ + return ebi2_lcd_register_driver(); +} + +module_init(ebi2_lcd_driver_init);
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