diff options
Diffstat (limited to 'drivers/video/samsung_duallcd/s3cfb_ielcd.c')
-rw-r--r-- | drivers/video/samsung_duallcd/s3cfb_ielcd.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/drivers/video/samsung_duallcd/s3cfb_ielcd.c b/drivers/video/samsung_duallcd/s3cfb_ielcd.c new file mode 100644 index 0000000..b86d6f5 --- /dev/null +++ b/drivers/video/samsung_duallcd/s3cfb_ielcd.c @@ -0,0 +1,164 @@ +/* linux/drivers/video/samsung/s3cfb_mdnie.c + * + * Register interface file for Samsung IELCD driver + * + * Copyright (c) 2009 Samsung Electronics + * http://www.samsungsemi.com/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/mutex.h> +#include <linux/poll.h> +#include <linux/wait.h> +#include <linux/fs.h> +#include <linux/irq.h> +#include <linux/mm.h> +#include <linux/fb.h> +#include <linux/ctype.h> +#include <linux/miscdevice.h> +#include <linux/dma-mapping.h> +#include <linux/delay.h> +#include <linux/device.h> + +#include <linux/io.h> +#include <mach/map.h> +#include <plat/clock.h> +#include <plat/regs-fb-s5p.h> + +#include "s3cfb.h" +#include "s3cfb_mdnie.h" +#include "s3cfb_ielcd.h" + +static struct resource *s3c_ielcd_mem; +static void __iomem *s3c_ielcd_base; + +#define s3c_ielcd_readl(addr) __raw_readl((s3c_ielcd_base + addr)) +#define s3c_ielcd_writel(val, addr) writel(val, (s3c_ielcd_base + addr)) + +static struct s3cfb_global ielcd_fb; +static struct s3cfb_global *ielcd_fbdev; + +int s3c_ielcd_hw_init(void) +{ + s3c_ielcd_mem = request_mem_region(S3C_IELCD_PHY_BASE, S3C_IELCD_MAP_SIZE, "ielcd"); + if (s3c_ielcd_mem == NULL) { + printk(KERN_ERR "IELCD: failed to reserved memory region\n"); + return -ENOENT; + } + + s3c_ielcd_base = ioremap(S3C_IELCD_PHY_BASE, S3C_IELCD_MAP_SIZE); + if (s3c_ielcd_base == NULL) { + printk(KERN_ERR "IELCD failed ioremap\n"); + return -ENOENT; + } + + printk(KERN_INFO "%s : 0x%p\n", __func__, s3c_ielcd_base); + + ielcd_fbdev = &ielcd_fb; + + return 0; +} + +int s3c_ielcd_logic_start(void) +{ + s3c_ielcd_writel(S3C_IELCD_MAGIC_KEY, S3C_IELCD_GPOUTCON0); + return 0; +} + +int s3c_ielcd_logic_stop(void) +{ + s3c_ielcd_writel(0, S3C_IELCD_GPOUTCON0); + return 0; +} + +int s3c_ielcd_display_on(void) +{ + unsigned int cfg; + + cfg = s3c_ielcd_readl(S3C_VIDCON0); + cfg |= (S3C_VIDCON0_ENVID_ENABLE | S3C_VIDCON0_ENVID_F_ENABLE); + s3c_ielcd_writel(cfg, S3C_VIDCON0); + + return 0; +} + +#if 0 +int s3c_ielcd_display_off(void) +{ + unsigned int cfg; + + cfg = s3c_ielcd_readl(S3C_IELCD_VIDCON0); + /*cfg &= ~(S3C_VIDCON0_ENVID_ENABLE| S3C_VIDCON0_ENVID_F_ENABLE);*/ + cfg &= ~(S3C_VIDCON0_ENVID_F_ENABLE); + s3c_ielcd_writel(cfg, S3C_IELCD_VIDCON0); + + return 0; +} +#else +int s3c_ielcd_display_off(void) +{ + unsigned int cfg, ielcd_count = 0; + + cfg = s3c_ielcd_readl(S3C_VIDCON0); + cfg |= S3C_VIDCON0_ENVID_ENABLE; + cfg &= ~(S3C_VIDCON0_ENVID_F_ENABLE); + + s3c_ielcd_writel(cfg, S3C_VIDCON0); + + do { + if (++ielcd_count > 2000000) { + printk(KERN_ERR "ielcd off fail\n"); + return 1; + } + + if (!(s3c_ielcd_readl(S3C_VIDCON1) & 0xffff0000)) + return 0; + } while (1); +} +#endif + +int s3c_ielcd_init_global(struct s3cfb_global *ctrl) +{ + unsigned int cfg; + + *ielcd_fbdev = *ctrl; + ctrl->ielcd_regs = ielcd_fbdev->regs = s3c_ielcd_base; + + s3cfb_set_polarity_only(ielcd_fbdev); + s3cfb_set_timing(ielcd_fbdev); + s3cfb_set_lcd_size(ielcd_fbdev); + + /* vclock divider setting , same as FIMD */ + cfg = readl(ctrl->regs + S3C_VIDCON0); + cfg &= ~(S3C_VIDCON0_VIDOUT_MASK | S3C_VIDCON0_VCLKEN_MASK); + cfg |= S3C_VIDCON0_VIDOUT_RGB; + cfg |= S3C_VIDCON0_VCLKEN_NORMAL; + s3c_ielcd_writel(cfg, S3C_VIDCON0); + + /* window0 position setting , fixed */ + s3c_ielcd_writel(0, S3C_VIDOSD0A); + + /* window0 position setting */ + cfg = S3C_VIDOSD_RIGHT_X(ctrl->lcd->width - 1); + cfg |= S3C_VIDOSD_BOTTOM_Y(ctrl->lcd->height - 1); + s3c_ielcd_writel(cfg, S3C_VIDOSD0B); + + /* window0 osd size setting */ + s3c_ielcd_writel((ctrl->lcd->width * ctrl->lcd->height), S3C_VIDOSD0C); + + /* window0 setting , fixed */ + cfg = S3C_WINCON_DATAPATH_LOCAL | S3C_WINCON_BPPMODE_32BPP | S3C_WINCON_INRGB_RGB; + s3c_ielcd_writel(cfg, S3C_WINCON0); + + s3cfb_window_on(ielcd_fbdev, 0); + + return 0; +} + |