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- /*
- * linux/drivers/video/s3cfb.c
- *
- * $Id: s3cfb.c,v 1.23 2008/07/08 01:00:44 jsgood Exp $
- *
- * Revision 1.16 2006/09/14 04:45:15 ihlee215
- * OSD support added
- *
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive for
- * more details.
- *
- * S3C LCD Controller Frame Buffer Driver
- * based on skeletonfb.c, sa1100fb.c
- *
- */
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/errno.h>
- #include <linux/string.h>
- #include <linux/mm.h>
- #include <linux/tty.h>
- #include <linux/slab.h>
- #include <linux/delay.h>
- #include <linux/fb.h>
- #include <linux/init.h>
- #include <linux/dma-mapping.h>
- #include <linux/interrupt.h>
- #include <linux/workqueue.h>
- #include <linux/wait.h>
- #include <linux/platform_device.h>
- #include <linux/clk.h>
- #include <asm/io.h>
- #include <asm/uaccess.h>
- #include <asm/div64.h>
- //#include <asm/mach/map.h>
- #include <asm/arch/regs-lcd.h>
- #include <asm/arch/regs-gpio.h>
- #include <asm/arch/idle.h>
- #include "s3cfb.h"
- #ifdef CONFIG_PM
- #include <linux/pm.h>
- #include <asm/plat-s3c24xx/pm.h>
- #endif
- #define DEFAULT_BACKLIGHT_LEVEL 2
- struct s3c_fb_info info[CONFIG_FB_NUM];
- s3cfb_vSyncInfoType s3cfb_vSyncInfo;
- /* backlight and power control functions */
- static int backlight_level = DEFAULT_BACKLIGHT_LEVEL;
- static int backlight_power = 1;
- static int lcd_power = 1;
- static void s3c_fb_lcd_power(int to)
- {
- lcd_power = to;
- if (mach_info.lcd_power)
- (mach_info.lcd_power)(to);
- }
- static inline void s3c_fb_backlight_power(int to)
- {
- backlight_power = to;
- if (mach_info.backlight_power)
- (mach_info.backlight_power)(to);
- }
- void s3c_fb_backlight_level(int to)
- {
- backlight_level = to;
- if (mach_info.set_brightness)
- (mach_info.set_brightness)(to);
- }
- /*
- * s3c_fb_check_var():
- * Get the video params out of 'var'. If a value doesn't fit, round it up,
- * if it's too big, return -EINVAL.
- *
- */
- static int s3c_fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
- {
- //struct s3c_fb_info *fbi = (struct s3c_fb_info *)info;
- dprintk("check_var(var=%p, info=%p)\n", var, info);
- switch (var->bits_per_pixel) {
- case 8:
- var->red = s3c_fb_rgb_8.red;
- var->green = s3c_fb_rgb_8.green;
- var->blue = s3c_fb_rgb_8.blue;
- var->transp = s3c_fb_rgb_8.transp;
- break;
- case 16:
- var->red = s3c_fb_rgb_16.red;
- var->green = s3c_fb_rgb_16.green;
- var->blue = s3c_fb_rgb_16.blue;
- var->transp = s3c_fb_rgb_16.transp;
- break;
- case 24:
- var->red = s3c_fb_rgb_24.red;
- var->green = s3c_fb_rgb_24.green;
- var->blue = s3c_fb_rgb_24.blue;
- var->transp = s3c_fb_rgb_24.transp;
- break;
- case 32:
- var->red = s3c_fb_rgb_32.red;
- var->green = s3c_fb_rgb_32.green;
- var->blue = s3c_fb_rgb_32.blue;
- var->transp = s3c_fb_rgb_32.transp;
- break;
- }
- return 0;
- }
- static inline void s3c_modify_gpio(void __iomem *reg,
- unsigned long set, unsigned long mask)
- {
- unsigned long tmp;
- tmp = __raw_readl(reg) & ~mask;
- __raw_writel(tmp | set, reg);
- }
- /*
- * s3c_fb_set_par - Optional function. Alters the hardware state.
- * @info: frame buffer structure that represents a single frame buffer
- *
- */
- static int s3c_fb_set_par(struct fb_info *info)
- {
- struct s3c_fb_info *fbi = (struct s3c_fb_info *)info;
- struct fb_var_screeninfo *var = &info->var;
- if (var->bits_per_pixel == 16)
- fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR;
- else if (var->bits_per_pixel == 32)
- fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR;
- else
- fbi->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
- fbi->fb.fix.line_length = var->width * mach_info.bytes_per_pixel;
- /* activate this new configuration */
- s3c_fb_activate_var(fbi, var);
- return 0;
- }
- static int palette_win;
- static void schedule_palette_update(struct s3c_fb_info *fbi,
- unsigned int regno, unsigned int val)
- {
- unsigned long flags;
- local_irq_save(flags);
- fbi->palette_buffer[regno] = val;
- if (!fbi->palette_ready) {
- fbi->palette_ready = 1;
- palette_win=fbi->win_id;
- }
- local_irq_restore(flags);
- }
- static inline unsigned int chan_to_field(unsigned int chan, struct fb_bitfield bf)
- {
- chan &= 0xffff;
- chan >>= 16 - bf.length;
- return chan << bf.offset;
- }
- static int s3c_fb_setcolreg(unsigned regno,
- unsigned red, unsigned green, unsigned blue,
- unsigned transp, struct fb_info *info)
- {
- struct s3c_fb_info *fbi = (struct s3c_fb_info *)info;
- unsigned int val;
- switch (fbi->fb.fix.visual) {
- case FB_VISUAL_TRUECOLOR:
- /* true-colour, use pseuo-palette */
- if (regno < 16) {
- u32 *pal = fbi->fb.pseudo_palette;
- val = chan_to_field(red, fbi->fb.var.red);
- val |= chan_to_field(green, fbi->fb.var.green);
- val |= chan_to_field(blue, fbi->fb.var.blue);
- pal[regno] = val;
- }
- break;
- case FB_VISUAL_PSEUDOCOLOR:
- if (regno < 256) {
- #if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
- /* currently assume RGB 8-8-8 mode -- for SONY */
- val = ((red << 8) & 0xff0000);
- val |= ((green >> 0) & 0xff00);
- val |= ((blue >> 8) & 0xff);
- #elif defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- /* currently assume RGB 5-6-5 mode */
- val = ((red >> 0) & 0xf800);
- val |= ((green >> 5) & 0x07e0);
- val |= ((blue >> 11) & 0x001f);
- #endif
- dprintk("index = %d, val = 0x%8X\n", regno, val);
- schedule_palette_update(fbi, regno, val);
- }
- break;
- default:
- return 1; /* unknown type */
- }
- return 0;
- }
- #if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- static void s3c_fb_write_palette(struct s3c_fb_info *fbi)
- {
- unsigned int i;
- unsigned long ent;
- #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- unsigned int win_num=fbi->win_id;
- #endif
- fbi->palette_ready = 0;
- //__raw_writel((mach_info.wincon0 | S3C_WINCONx_ENWIN_F_DISABLE), S3C_WINCON0);
- __raw_writel((mach_info.wpalcon | S3C_WPALCON_PALUPDATEEN), S3C_WPALCON);
- for (i = 0; i < 256; i++) {
- if ((ent = fbi->palette_buffer[i]) == PALETTE_BUFF_CLEAR)
- continue;
- #if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
- __raw_writel(ent, S3C_TFTPAL0(i));
- #elif defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- __raw_writel(ent, S3C_TFTPAL0(i)+0x400*win_num);
- #endif
- /* it seems the only way to know exactly
- * if the palette wrote ok, is to check
- * to see if the value verifies ok
- */
- #if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
- if (__raw_readl(S3C_TFTPAL0(i)) == ent) {
- #elif defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- if (__raw_readl(S3C_TFTPAL0(i)+0x400*win_num) == ent) {
- #endif
- fbi->palette_buffer[i] = PALETTE_BUFF_CLEAR;
- }
- else {
- fbi->palette_ready = 1; /* retry */
- printk("Retry writing into the palette\n");
- }
- }
- __raw_writel(mach_info.wpalcon, S3C_WPALCON);
- //__raw_writel((mach_info.wincon0 | S3C_WINCONx_ENWIN_F_ENABLE), S3C_WINCON0);
- }
- #endif
- /**
- * s3c_fb_pan_display
- * @var: frame buffer variable screen structure
- * @info: frame buffer structure that represents a single frame buffer
- *
- * Pan (or wrap, depending on the `vmode' field) the display using the
- * `xoffset' and `yoffset' fields of the `var' structure.
- * If the values don't fit, return -EINVAL.
- *
- * Returns negative errno on error, or zero on success.
- */
- static int s3c_fb_pan_display(struct fb_var_screeninfo *var,
- struct fb_info *info)
- {
- struct s3c_fb_info *fbi = (struct s3c_fb_info *)info;
-
- dprintk("s3c_fb_pan_display(var=%p, info=%p)\n", var, info);
- if (var->xoffset != 0) /* not yet ... */
- return -EINVAL;
- if (var->yoffset + info->var.yres > info->var.yres_virtual)
- return -EINVAL;
-
- fbi->fb.var.xoffset = var->xoffset;
- fbi->fb.var.yoffset = var->yoffset;
- s3c_fb_set_lcdaddr(fbi);
- return 0;
- }
- /**
- * s3c_fb_blank
- * @blank_mode: the blank mode we want.
- * @info: frame buffer structure that represents a single frame buffer
- *
- * Blank the screen if blank_mode != 0, else unblank. Return 0 if
- * blanking succeeded, != 0 if un-/blanking failed due to e.g. a
- * video mode which doesn't support it. Implements VESA suspend
- * and powerdown modes on hardware that supports disabling hsync/vsync:
- * blank_mode == 2: suspend vsync
- * blank_mode == 3: suspend hsync
- * blank_mode == 4: powerdown
- *
- * Returns negative errno on error, or zero on success.
- *
- */
- static int s3c_fb_blank(int blank_mode, struct fb_info *info)
- {
- dprintk("blank(mode=%d, info=%p)\n", blank_mode, info);
- switch (blank_mode) {
- case VESA_NO_BLANKING: /* lcd on, backlight on */
- s3c_fb_lcd_power(1);
- s3c_fb_backlight_power(1);
- break;
- case VESA_VSYNC_SUSPEND: /* lcd on, backlight off */
- case VESA_HSYNC_SUSPEND:
- s3c_fb_lcd_power(1);
- s3c_fb_backlight_power(0);
- break;
- case VESA_POWERDOWN: /* lcd and backlight off */
- s3c_fb_lcd_power(0);
- s3c_fb_backlight_power(0);
- break;
- default:
- return -EINVAL;
- }
- return 0;
- }
- /* sysfs export of baclight control */
- static int s3c_fb_lcd_power_show(struct device *dev, struct device_attribute *attr, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", lcd_power);
- }
- static int s3c_fb_lcd_power_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t len)
- {
- if (len < 1)
- return -EINVAL;
- if (strnicmp(buf, "on", 2) == 0 ||
- strnicmp(buf, "1", 1) == 0) {
- s3c_fb_lcd_power(1);
- } else if (strnicmp(buf, "off", 3) == 0 ||
- strnicmp(buf, "0", 1) == 0) {
- s3c_fb_lcd_power(0);
- } else {
- return -EINVAL;
- }
- return len;
- }
- static int s3c_fb_backlight_level_show(struct device *dev, struct device_attribute *attr, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", backlight_level);
- }
- static int s3c_fb_backlight_power_show(struct device *dev, struct device_attribute *attr, char *buf)
- {
- return snprintf(buf, PAGE_SIZE, "%d\n", backlight_power);
- }
- static int s3c_fb_backlight_level_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t len)
- {
- unsigned long value = simple_strtoul(buf, NULL, 10);
- if (value < mach_info.backlight_min ||
- value > mach_info.backlight_max)
- return -ERANGE;
- s3c_fb_backlight_level(value);
- return len;
- }
- static int s3c_fb_backlight_power_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t len)
- {
- if (len < 1)
- return -EINVAL;
- if (strnicmp(buf, "on", 2) == 0 ||
- strnicmp(buf, "1", 1) == 0) {
- s3c_fb_backlight_power(1);
- } else if (strnicmp(buf, "off", 3) == 0 ||
- strnicmp(buf, "0", 1) == 0) {
- s3c_fb_backlight_power(0);
- } else {
- return -EINVAL;
- }
- return len;
- }
- static DEVICE_ATTR(lcd_power, 0644,
- s3c_fb_lcd_power_show,
- s3c_fb_lcd_power_store);
- static DEVICE_ATTR(backlight_level, 0644,
- s3c_fb_backlight_level_show,
- s3c_fb_backlight_level_store);
- static DEVICE_ATTR(backlight_power, 0644,
- s3c_fb_backlight_power_show,
- s3c_fb_backlight_power_store);
- struct fb_ops s3c_fb_ops = {
- .owner = THIS_MODULE,
- .fb_check_var = s3c_fb_check_var,
- .fb_set_par = s3c_fb_set_par,
- .fb_blank = s3c_fb_blank,
- .fb_pan_display = s3c_fb_pan_display,
- .fb_setcolreg = s3c_fb_setcolreg,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
- .fb_cursor = soft_cursor,
- .fb_ioctl = s3c_fb_ioctl,
- };
- /* Fake monspecs to fill in fbinfo structure */
- /* Don't know if the values are important */
- struct fb_monspecs monspecs __initdata = {
- .hfmin = 30000,
- .hfmax = 70000,
- .vfmin = 50,
- .vfmax = 65,
- };
- static struct clk *lcd_clock;
- void s3c_fb_init_fbinfo(struct s3c_fb_info *finfo, char *drv_name, int index)
- {
- int i = 0;
- if(index==0) Init_LDI();
- strcpy(finfo->fb.fix.id, drv_name);
- finfo->win_id = index;
- finfo->fb.fix.type = FB_TYPE_PACKED_PIXELS;
- finfo->fb.fix.type_aux = 0;
- finfo->fb.fix.xpanstep = 0;
- finfo->fb.fix.ypanstep = 1;
- finfo->fb.fix.ywrapstep = 0;
- finfo->fb.fix.accel = FB_ACCEL_NONE;
- finfo->fb.fbops = &s3c_fb_ops;
- finfo->fb.flags = FBINFO_FLAG_DEFAULT;
- finfo->fb.monspecs = monspecs;
- finfo->fb.pseudo_palette = &finfo->pseudo_pal;
- finfo->fb.var.nonstd = 0;
- finfo->fb.var.activate = FB_ACTIVATE_NOW;
- finfo->fb.var.accel_flags = 0;
- finfo->fb.var.vmode = FB_VMODE_NONINTERLACED;
- finfo->fb.var.xoffset = mach_info.xoffset;
- finfo->fb.var.yoffset = mach_info.yoffset;
- if(index==0){
- finfo->fb.var.height = mach_info.height;
- finfo->fb.var.width = mach_info.width;
-
- finfo->fb.var.xres = mach_info.xres;
- finfo->fb.var.xres_virtual = mach_info.xres_virtual;
- finfo->fb.var.yres = mach_info.yres;
- finfo->fb.var.yres_virtual = mach_info.yres_virtual;
- }
- else{
- finfo->fb.var.height = mach_info.osd_height;
- finfo->fb.var.width = mach_info.osd_width;
-
- finfo->fb.var.xres = mach_info.osd_xres;
- finfo->fb.var.xres_virtual = mach_info.osd_xres_virtual;
- finfo->fb.var.yres = mach_info.osd_yres;
- finfo->fb.var.yres_virtual = mach_info.osd_yres_virtual;
- }
-
- finfo->fb.var.bits_per_pixel = mach_info.bpp;
- finfo->fb.var.pixclock = mach_info.pixclock;
- finfo->fb.var.hsync_len = mach_info.hsync_len;
- finfo->fb.var.left_margin = mach_info.left_margin;
- finfo->fb.var.right_margin = mach_info.right_margin;
- finfo->fb.var.vsync_len = mach_info.vsync_len;
- finfo->fb.var.upper_margin = mach_info.upper_margin;
- finfo->fb.var.lower_margin = mach_info.lower_margin;
- finfo->fb.var.sync = mach_info.sync;
- finfo->fb.var.grayscale = mach_info.cmap_grayscale;
- #if defined(CONFIG_G3D)
- finfo->fb.fix.smem_len = finfo->fb.var.xres_virtual * finfo->fb.var.yres_virtual *
- mach_info.bytes_per_pixel * 3;
- #else
- finfo->fb.fix.smem_len = finfo->fb.var.xres_virtual * finfo->fb.var.yres_virtual *
- mach_info.bytes_per_pixel;
- #endif
- finfo->fb.fix.line_length = finfo->fb.var.width * mach_info.bytes_per_pixel;
- for (i = 0; i < 256; i++)
- finfo->palette_buffer[i] = PALETTE_BUFF_CLEAR;
- }
- /* =================== Double buffering ====================================== */
- static int fbNum = 0;
- void s3c_fb_change_req(int req_fbNum) {
- fbNum = req_fbNum;
- info[fbNum].fb_change_ready = 1;
- }
- static irqreturn_t s3c_fb_irq(int irqno, void *param)
- {
-
- // VSYNC interrupt
- // 1. For changing a palette
- if (info[palette_win].palette_ready) {
- s3c_fb_write_palette(&info[palette_win]);
- }
- /* Application want to change FB by WaitForVsync.
- // 2. For changing the working frame buffer
- if (info[fbNum].fb_change_ready) {
- s3c_fb_set_fb_change(fbNum);
- }
- */
- #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- // For clearing the interrupt source
- __raw_writel(__raw_readl(S3C_VIDINTCON1), S3C_VIDINTCON1);
- #endif
- //(WAITFORVSYNC)
- s3cfb_vSyncInfo.count++;
- wake_up_interruptible( &s3cfb_vSyncInfo.waitQueue );
- //(WAITFORVSYNC)
- return IRQ_HANDLED;
- }
- //(WAITFORVSYNC)
- int s3cfb_wait_for_sync(u_int32_t crtc)
- {
- int cnt;
- cnt = s3cfb_vSyncInfo.count;
- wait_event_interruptible_timeout(s3cfb_vSyncInfo.waitQueue, cnt != s3cfb_vSyncInfo.count, HZ/10);
- return cnt;
- }
- //(WAITFORVSYNC)
- void s3c_fb_change_buff(int req_winNum, int req_fb) {
- #if (defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)) && defined(CONFIG_FB_DOUBLE_BUFFERING)
- // Software-based trigger
- __raw_writel((1<<0), S3C_CPUTRIGCON2);
- #elif (defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)) && defined(CONFIG_FB_DOUBLE_BUFFERING)
- switch (req_winNum)
- {
- case 0 : // In case of windows 0
- if (0 == req_fb) mach_info.wincon0 &= ~BIT20;
- else mach_info.wincon0 |= BIT20;
- __raw_writel(mach_info.wincon0 | S3C_WINCONx_ENWIN_F_ENABLE, S3C_WINCON0);
- break;
-
- case 1 : // In case of windows 1
- if (0 == req_fb) mach_info.wincon1 &= ~BIT20;
- else mach_info.wincon1 |= BIT20;
- __raw_writel(mach_info.wincon1 | S3C_WINCONx_ENWIN_F_ENABLE, S3C_WINCON1);
- break;
-
- default :
- break;
- }
- #endif // #if defined(CONFIG_CPU_S3C2443)
- }
- int s3c_fb_get_win_buff_status(int winNum)
- {
- int retVal = 0;
- int buffStatus, buffSelect;
-
- switch (winNum)
- {
- case 0 :
- buffStatus = (readl(S3C_WINCON0) & BIT21) >> 21;
- buffSelect = (readl(S3C_WINCON0) & BIT20) >> 20;
- if (buffStatus == buffSelect)
- {
- if (0 == buffSelect) retVal = 0;
- else retVal = 1;
- }
- else
- {
- if (0 == buffSelect) retVal = -1;
- else retVal = -2;
- }
- break;
- case 1:
- buffStatus = (readl(S3C_WINCON1) & BIT21) >> 21;
- buffSelect = (readl(S3C_WINCON1) & BIT20) >> 20;
- if (buffStatus == buffSelect)
- {
- if (0 == buffSelect) retVal = 0;
- else retVal = 1;
- }
- else
- {
- if (0 == buffSelect) retVal = -1;
- else retVal = -2;
- }
- break;
- default :
- break;
- }
- return (retVal);
- }
- #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- void s3c_fb_enable_local_post(int in_yuv)
- {
- u32 value;
- mach_info.wincon0 &= ~(BIT22 | BIT13);
- value = S3C_WINCONx_ENLOCAL_POST | S3C_WINCONx_ENWIN_F_ENABLE;
- if (in_yuv)
- value |= S3C_WINCONx_INRGB_YUV;
-
- __raw_writel(mach_info.wincon0 | value, S3C_WINCON0);
- return 0;
- }
- void s3c_fb_enable_dma(void)
- {
- u32 value;
- mach_info.wincon0 &= ~(BIT22 | BIT13);
- value = S3C_WINCONx_ENLOCAL_DMA | S3C_WINCONx_ENWIN_F_ENABLE;
- __raw_writel(mach_info.wincon0 | value, S3C_WINCON0);
- return 0;
- }
- EXPORT_SYMBOL(s3c_fb_enable_dma);
- EXPORT_SYMBOL(s3c_fb_enable_local_post);
- #endif
- /* =================== DVS ======================================= */
- #if defined (CONFIG_S3C_DVS) && defined (CONFIG_CPU_S3C2412)
- static irqreturn_t s3c_dvs_irq(int irqno, void *param)
- {
- s3c_dvs_action();
- return IRQ_HANDLED;
- }
- #endif
- int __init s3c_fb_probe(struct platform_device *pdev)
- {
- char driver_name[]="s3c_fb";
- int ret;
- int index=0;
- for(index=0; index<S3C_FB_NUM; index++){
- s3c_fb_init_fbinfo(&info[index], driver_name, index);
- if(index==0){
- s3c_fb_backlight_power(1);
- s3c_fb_lcd_power(1);
- s3c_fb_backlight_level(DEFAULT_BACKLIGHT_LEVEL);
- dprintk("dev FB init\n");
- if (!request_mem_region((unsigned long)S3C24XX_VA_LCD, SZ_1M, "s3c-lcd")) {
- ret = -EBUSY;
- goto dealloc_fb;
- }
- dprintk("got LCD region\n");
- lcd_clock = clk_get(NULL, "lcd");
- if (!lcd_clock) {
- printk(KERN_INFO "failed to get lcd clock source\n");
- ret = -ENOENT;
- goto release_irq;
- }
- clk_enable(lcd_clock);
- printk("S3C_LCD clock got enabled :: %ld.%03ld Mhz\n", print_mhz(clk_get_rate(lcd_clock)));
- msleep(5);
- }
- /* Initialize video memory */
- ret = s3c_fb_map_video_memory(&info[index]);
- if (ret) {
- printk("Failed to allocate video RAM: %d\n", ret);
- ret = -ENOMEM;
- goto release_clock;
- }
- dprintk("got video memory\n");
- ret = s3c_fb_init_registers(&info[index]);
- ret = s3c_fb_check_var(&info[index].fb.var, &info[index].fb);
- if(index<2){
- /* 2007-01-09-Tue. for RGB 8-8-8 palette*/
- if(fb_alloc_cmap(&info[index].fb.cmap, 256, 0)<0){
- goto dealloc_fb;
- }
- }
- else{
- /* 2007-01-09-Tue. for RGB 8-8-8 palette*/
- if(fb_alloc_cmap(&info[index].fb.cmap, 16, 0)<0){
- goto dealloc_fb;
- }
- }
-
- ret = register_framebuffer(&info[index].fb);
- if (ret < 0) {
- printk(KERN_ERR "Failed to register framebuffer device: %d\n", ret);
- goto free_video_memory;
- }
- }// for(index=0; index<CONFIG_FB_NUM; index++)
- //(WAITFORVSYNC)
- // - initialize the struct for Waitforvsync
- s3cfb_vSyncInfo.count = 0;
- init_waitqueue_head(&s3cfb_vSyncInfo.waitQueue);
- //(WAITFORVSYNC)
- #if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
- ret = request_irq(IRQ_S3C2443_LCD3, s3c_fb_irq, 0, "s3c-lcd", pdev);
- #elif defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- ret = request_irq(IRQ_LCD_VSYNC, s3c_fb_irq, 0, "s3c-lcd", pdev);
- #elif defined (CONFIG_S3C_DVS) && defined (CONFIG_CPU_S3C2412)
- ret = request_irq(IRQ_LCD, s3c_dvs_irq, 0, "s3c-lcd", pdev);
- #endif
- if (ret != 0) {
- printk("Failed to install irq (%d)\n", ret);
- goto release_irq;
- }
- #if defined (CONFIG_S3C_DVS) & defined (CONFIG_CPU_S3C2412)
- disable_irq(IRQ_LCD);
- #endif
- /* create device files */
- ret = device_create_file(&(pdev->dev), &dev_attr_backlight_power);
- if (ret < 0)
- printk(KERN_WARNING "s3cfb: failed to add entries\n");
-
- ret = device_create_file(&(pdev->dev), &dev_attr_backlight_level);
- if (ret < 0)
- printk(KERN_WARNING "s3cfb: failed to add entries\n");
-
- ret = device_create_file(&(pdev->dev), &dev_attr_lcd_power);
- if (ret < 0)
- printk(KERN_WARNING "s3cfb: failed to add entries\n");
- printk(KERN_INFO "fb%d: %s frame buffer device\n",
- info[index].fb.node, info[index].fb.fix.id);
- return 0;
- free_video_memory:
- s3c_fb_unmap_video_memory(&info[index]);
- release_clock:
- clk_disable(lcd_clock);
- clk_put(lcd_clock);
- release_irq:
- #if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
- free_irq(IRQ_S3C2443_LCD3, &info);
- #elif defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- free_irq(IRQ_LCD_VSYNC, &info);
- #endif
- //release_mem:
- release_mem_region((unsigned long)S3C24XX_VA_LCD, S3C24XX_SZ_LCD);
- dealloc_fb:
- framebuffer_release(&info[index].fb);
- return ret;
- }
- /* -----------------------------------------
- * s3c_fb_stop_lcd & s3c_fb_start_lcd
- *
- * shutdown/ start the lcd controller
- */
- static void s3c_fb_stop_lcd(void)
- {
- unsigned long flags;
- unsigned long tmp;
- local_irq_save(flags);
- #if defined(CONFIG_CPU_S3C2443) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- tmp = __raw_readl(S3C_VIDCON0);
- __raw_writel(tmp & ~(S3C_VIDCON0_ENVID_ENABLE | S3C_VIDCON0_ENVID_F_ENABLE), S3C_VIDCON0);
- #else
- tmp = __raw_readl(S3C_LCDCON1);
- __raw_writel(tmp & ~S3C2410_LCDCON1_ENVID, S3C_LCDCON1);
- #endif
- local_irq_restore(flags);
- }
- void s3c_fb_start_lcd(void) {
- unsigned long flags;
- unsigned long tmp;
- local_irq_save(flags);
- #if defined(CONFIG_FB_LTV350QV) || defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- tmp = __raw_readl(S3C_VIDCON0);
- __raw_writel(tmp | S3C_VIDCON0_ENVID_ENABLE | S3C_VIDCON0_ENVID_F_ENABLE, S3C_VIDCON0);
- #else
- tmp = __raw_readl(S3C_LCDCON1);
- __raw_writel(tmp | S3C_WINCONx_ENWIN_F_ENABLE, S3C_LCDCON1);
- #endif
- local_irq_restore(flags);
- }
- /*
- * Cleanup
- */
- static int s3c_fb_remove(struct platform_device *pdev)
- {
- struct fb_info *fbinfo = platform_get_drvdata(pdev);
- struct s3c_fb_info *info = fbinfo->par;
- int irq;
- int index=0;
- s3c_fb_stop_lcd();
- msleep(1);
- for(index=0; index<S3C_FB_NUM; index++){
- s3c_fb_unmap_video_memory((struct s3c_fb_info *)&info[index]);
- if (lcd_clock) {
- clk_disable(lcd_clock);
- clk_put(lcd_clock);
- lcd_clock = NULL;
- }
- irq = platform_get_irq(pdev, 0);
- free_irq(irq,&info[index]);
- release_mem_region((unsigned long)S3C24XX_VA_LCD, S3C24XX_SZ_LCD);
- unregister_framebuffer(&(info[index].fb));
- } // for(index=0; index<CONFIG_FB_NUM; index++)
- return 0;
- }
- #ifdef CONFIG_PM
- static struct sleep_save lcd_save[] = {
- #if defined(CONFIG_CPU_S3C2450) || defined(CONFIG_CPU_S3C2416)
- SAVE_ITEM(S3C_VIDCON0),SAVE_ITEM(S3C_VIDCON1),
- SAVE_ITEM(S3C_VIDTCON0),SAVE_ITEM(S3C_VIDTCON1),
- SAVE_ITEM(S3C_VIDTCON2),SAVE_ITEM(S3C_WINCON0),
- SAVE_ITEM(S3C_WINCON1),
- SAVE_ITEM(S3C_VIDINTCON),SAVE_ITEM(S3C_SYSIFCON0),
- SAVE_ITEM(S3C_SIFCCON0),
- SAVE_ITEM(S3C_CPUTRIGCON2),SAVE_ITEM(S3C_VIDOSD0A),
- SAVE_ITEM(S3C_VIDOSD0B),SAVE_ITEM(S3C_VIDOSD0C),
- SAVE_ITEM(S3C_VIDOSD1A),SAVE_ITEM(S3C_VIDOSD1B),
- SAVE_ITEM(S3C_VIDOSD1C),SAVE_ITEM(S3C_VIDW00ADD0B0),
- SAVE_ITEM(S3C_VIDW00ADD0B1),SAVE_ITEM(S3C_VIDW01ADD0),
- SAVE_ITEM(S3C_VIDW00ADD1B0),SAVE_ITEM(S3C_VIDW00ADD1B1),
- SAVE_ITEM(S3C_VIDW01ADD1),SAVE_ITEM(S3C_VIDW00ADD2B0),
- SAVE_ITEM(S3C_VIDW00ADD2B1),SAVE_ITEM(S3C_VIDW01ADD2),
- #elif defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410)
- SAVE_ITEM(S3C_VIDCON0),
- SAVE_ITEM(S3C_VIDCON1),
- SAVE_ITEM(S3C_VIDTCON0),
- SAVE_ITEM(S3C_VIDTCON1),
- SAVE_ITEM(S3C_VIDTCON2),
- SAVE_ITEM(S3C_VIDTCON3),
- SAVE_ITEM(S3C_WINCON0),
- SAVE_ITEM(S3C_WINCON1),
- SAVE_ITEM(S3C_WINCON2),
- SAVE_ITEM(S3C_WINCON3),
- SAVE_ITEM(S3C_WINCON4),
- SAVE_ITEM(S3C_VIDOSD0A),
- SAVE_ITEM(S3C_VIDOSD0B),
- SAVE_ITEM(S3C_VIDOSD0C),
- SAVE_ITEM(S3C_VIDOSD1A),
- SAVE_ITEM(S3C_VIDOSD1B),
- SAVE_ITEM(S3C_VIDOSD1C),
- SAVE_ITEM(S3C_VIDOSD1D),
- SAVE_ITEM(S3C_VIDOSD2A),
- SAVE_ITEM(S3C_VIDOSD2B),
- SAVE_ITEM(S3C_VIDOSD2C),
- SAVE_ITEM(S3C_VIDOSD2D),
- SAVE_ITEM(S3C_VIDOSD3A),
- SAVE_ITEM(S3C_VIDOSD3B),
- SAVE_ITEM(S3C_VIDOSD3C),
- SAVE_ITEM(S3C_VIDOSD4A),
- SAVE_ITEM(S3C_VIDOSD4B),
- SAVE_ITEM(S3C_VIDOSD4C),
- SAVE_ITEM(S3C_VIDW00ADD0B0),
- SAVE_ITEM(S3C_VIDW00ADD0B1),
- SAVE_ITEM(S3C_VIDW01ADD0B0),
- SAVE_ITEM(S3C_VIDW01ADD0B1),
- SAVE_ITEM(S3C_VIDW02ADD0),
- SAVE_ITEM(S3C_VIDW03ADD0),
- SAVE_ITEM(S3C_VIDW04ADD0),
- SAVE_ITEM(S3C_VIDW00ADD1B0),
- SAVE_ITEM(S3C_VIDW00ADD1B1),
- SAVE_ITEM(S3C_VIDW01ADD1B0),
- SAVE_ITEM(S3C_VIDW01ADD1B1),
- SAVE_ITEM(S3C_VIDW02ADD1),
- SAVE_ITEM(S3C_VIDW03ADD1),
- SAVE_ITEM(S3C_VIDW04ADD1),
- SAVE_ITEM(S3C_VIDW00ADD2),
- SAVE_ITEM(S3C_VIDW01ADD2),
- SAVE_ITEM(S3C_VIDW02ADD2),
- SAVE_ITEM(S3C_VIDW03ADD2),
- SAVE_ITEM(S3C_VIDW04ADD2),
- SAVE_ITEM(S3C_VIDINTCON0),
- SAVE_ITEM(S3C_VIDINTCON1),
- SAVE_ITEM(S3C_W1KEYCON0),
- SAVE_ITEM(S3C_W1KEYCON1),
- SAVE_ITEM(S3C_W2KEYCON0),
- SAVE_ITEM(S3C_W2KEYCON1),
- SAVE_ITEM(S3C_W3KEYCON0),
- SAVE_ITEM(S3C_W3KEYCON1),
- SAVE_ITEM(S3C_W4KEYCON0),
- SAVE_ITEM(S3C_W4KEYCON1),
- SAVE_ITEM(S3C_DITHMODE),
- SAVE_ITEM(S3C_WIN0MAP),
- SAVE_ITEM(S3C_WIN1MAP),
- SAVE_ITEM(S3C_WIN2MAP),
- SAVE_ITEM(S3C_WIN3MAP),
- SAVE_ITEM(S3C_WIN4MAP),
- SAVE_ITEM(S3C_WPALCON),
- SAVE_ITEM(S3C_TRIGCON),
- SAVE_ITEM(S3C_I80IFCONA0),
- SAVE_ITEM(S3C_I80IFCONA1),
- SAVE_ITEM(S3C_I80IFCONB0),
- SAVE_ITEM(S3C_I80IFCONB1),
- SAVE_ITEM(S3C_LDI_CMDCON0),
- SAVE_ITEM(S3C_LDI_CMDCON1),
- SAVE_ITEM(S3C_SIFCCON0),
- SAVE_ITEM(S3C_SIFCCON1),
- SAVE_ITEM(S3C_SIFCCON2),
- SAVE_ITEM(S3C_LDI_CMD0),
- SAVE_ITEM(S3C_LDI_CMD1),
- SAVE_ITEM(S3C_LDI_CMD2),
- SAVE_ITEM(S3C_LDI_CMD3),
- SAVE_ITEM(S3C_LDI_CMD4),
- SAVE_ITEM(S3C_LDI_CMD5),
- SAVE_ITEM(S3C_LDI_CMD6),
- SAVE_ITEM(S3C_LDI_CMD7),
- SAVE_ITEM(S3C_LDI_CMD8),
- SAVE_ITEM(S3C_LDI_CMD9),
- SAVE_ITEM(S3C_LDI_CMD10),
- SAVE_ITEM(S3C_LDI_CMD11),
- SAVE_ITEM(S3C_W2PDATA01),
- SAVE_ITEM(S3C_W2PDATA23),
- SAVE_ITEM(S3C_W2PDATA45),
- SAVE_ITEM(S3C_W2PDATA67),
- SAVE_ITEM(S3C_W2PDATA89),
- SAVE_ITEM(S3C_W2PDATAAB),
- SAVE_ITEM(S3C_W2PDATACD),
- SAVE_ITEM(S3C_W2PDATAEF),
- SAVE_ITEM(S3C_W3PDATA01),
- SAVE_ITEM(S3C_W3PDATA23),
- SAVE_ITEM(S3C_W3PDATA45),
- SAVE_ITEM(S3C_W3PDATA67),
- SAVE_ITEM(S3C_W3PDATA89),
- SAVE_ITEM(S3C_W3PDATAAB),
- SAVE_ITEM(S3C_W3PDATACD),
- SAVE_ITEM(S3C_W3PDATAEF),
- SAVE_ITEM(S3C_W4PDATA01),
- SAVE_ITEM(S3C_W4PDATA23),
- #endif
- };
- /* suspend and resume support for the lcd controller */
- static int s3c_fb_suspend(struct platform_device *dev, pm_message_t state)
- {
- s3c_fb_stop_lcd();
- s3c2410_pm_do_save(lcd_save, ARRAY_SIZE(lcd_save));
- /* sleep before disabling the clock, we need to ensure
- * the LCD DMA engine is not going to get back on the bus
- * before the clock goes off again (bjd) */
- msleep(1);
- clk_disable(lcd_clock);
- return 0;
- }
- static int s3c_fb_resume(struct platform_device *dev)
- {
- clk_enable(lcd_clock);
- msleep(1);
- s3c2410_pm_do_restore(lcd_save, ARRAY_SIZE(lcd_save));
- Init_LDI();
- s3c_fb_start_lcd();
- return 0;
- }
- #else
- #define s3c_fb_suspend NULL
- #define s3c_fb_resume NULL
- #endif
- static struct platform_driver s3c_fb_driver = {
- .probe = s3c_fb_probe,
- .remove = s3c_fb_remove,
- .suspend = s3c_fb_suspend,
- .resume = s3c_fb_resume,
- .driver = {
- .name = "s3c-lcd",
- .owner = THIS_MODULE,
- },
- };
- int __devinit s3c_fb_init(void)
- {
- return platform_driver_register(&s3c_fb_driver);
- }
- static void __exit s3c_fb_cleanup(void)
- {
- platform_driver_unregister(&s3c_fb_driver);
- }
- EXPORT_SYMBOL(s3c_fb_change_req);
- EXPORT_SYMBOL(s3c_fb_stop_lcd);
- EXPORT_SYMBOL(s3c_fb_start_lcd);
- EXPORT_SYMBOL(s3c_fb_get_win_buff_status);
- EXPORT_SYMBOL(s3c_fb_change_buff);
- module_init(s3c_fb_init);
- module_exit(s3c_fb_cleanup);
- MODULE_AUTHOR("");
- MODULE_DESCRIPTION("Framebuffer driver for the S3C");
- MODULE_LICENSE("GPL");
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