/* 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);