*
* 2004-12-04: Arnaud Patard <arnaud.patard@rtp-net.org>
* - Added the possibility to set on or off the
- * debugging mesaages
+ * debugging messages
* - Replaced 0 and 1 by on or off when reading the
* /sys files
*
* - add pixel clock divisor control
*
* 2004-11-11: Arnaud Patard <arnaud.patard@rtp-net.org>
- * - Removed the use of currcon as it no more exist
- * - Added LCD power sysfs interface
+ * - Removed the use of currcon as it no more exists
+ * - Added LCD power sysfs interface
*
* 2004-11-03: Ben Dooks <ben-linux@fluff.org>
* - minor cleanups
* - Suppress command line options
*
* 2004-09-15: Arnaud Patard <arnaud.patard@rtp-net.org>
- * - code cleanup
+ * - code cleanup
*
* 2004-09-07: Arnaud Patard <arnaud.patard@rtp-net.org>
- * - Renamed from h1940fb.c to s3c2410fb.c
- * - Add support for different devices
- * - Backlight support
+ * - Renamed from h1940fb.c to s3c2410fb.c
+ * - Add support for different devices
+ * - Backlight support
*
- * 2004-09-05: Herbert Ptzl <herbert@13thfloor.at>
+ * 2004-09-05: Herbert Pötzl <herbert@13thfloor.at>
* - added clock (de-)allocation code
* - added fixem fbmem option
*
* - code cleanup
* - added a forgotten return in h1940fb_init
*
- * 2004-07-19: Herbert Ptzl <herbert@13thfloor.at>
+ * 2004-07-19: Herbert Pötzl <herbert@13thfloor.at>
* - code cleanup and extended debugging
*
* 2004-07-15: Arnaud Patard <arnaud.patard@rtp-net.org>
#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 "s3c2410fb.h"
-
-static struct s3c2410fb_mach_info *mach_info;
-
/* Debugging stuff */
#ifdef CONFIG_FB_S3C2410_DEBUG
-static int debug = 1;
+static int debug = 1;
#else
-static int debug = 0;
+static int debug = 0;
#endif
#define dprintk(msg...) if (debug) { printk(KERN_DEBUG "s3c2410fb: " msg); }
/* s3c2410fb_set_lcdaddr
*
* initialise lcd controller address pointers
-*/
-
-static void s3c2410fb_set_lcdaddr(struct s3c2410fb_info *fbi)
+ */
+static void s3c2410fb_set_lcdaddr(struct fb_info *info)
{
- struct fb_var_screeninfo *var = &fbi->fb->var;
unsigned long saddr1, saddr2, saddr3;
+ struct s3c2410fb_info *fbi = info->par;
+ void __iomem *regs = fbi->io;
- saddr1 = fbi->fb->fix.smem_start >> 1;
- saddr2 = fbi->fb->fix.smem_start;
- saddr2 += (var->xres * var->yres * var->bits_per_pixel)/8;
- saddr2>>= 1;
+ saddr1 = info->fix.smem_start >> 1;
+ saddr2 = info->fix.smem_start;
+ saddr2 += info->fix.line_length * info->var.yres;
+ saddr2 >>= 1;
- saddr3 = S3C2410_OFFSIZE(0) | S3C2410_PAGEWIDTH((var->xres * var->bits_per_pixel / 16) & 0x3ff);
+ saddr3 = S3C2410_OFFSIZE(0) |
+ S3C2410_PAGEWIDTH((info->fix.line_length / 2) & 0x3ff);
dprintk("LCDSADDR1 = 0x%08lx\n", saddr1);
dprintk("LCDSADDR2 = 0x%08lx\n", saddr2);
dprintk("LCDSADDR3 = 0x%08lx\n", saddr3);
- writel(saddr1, S3C2410_LCDSADDR1);
- writel(saddr2, S3C2410_LCDSADDR2);
- writel(saddr3, S3C2410_LCDSADDR3);
+ writel(saddr1, regs + S3C2410_LCDSADDR1);
+ writel(saddr2, regs + S3C2410_LCDSADDR2);
+ writel(saddr3, regs + S3C2410_LCDSADDR3);
}
/* s3c2410fb_calc_pixclk()
*
* calculate divisor for clk->pixclk
-*/
-
+ */
static unsigned int s3c2410fb_calc_pixclk(struct s3c2410fb_info *fbi,
unsigned long pixclk)
{
unsigned long clk = clk_get_rate(fbi->clk);
unsigned long long div;
- /* pixclk is in picoseoncds, our clock is in Hz
+ /* pixclk is in picoseconds, our clock is in Hz
*
* Hz -> picoseconds is / 10^-12
*/
div = (unsigned long long)clk * pixclk;
- do_div(div,1000000UL);
- do_div(div,1000000UL);
+ div >>= 12; /* div / 2^12 */
+ do_div(div, 625 * 625UL * 625); /* div / 5^12 */
dprintk("pixclk %ld, divisor is %ld\n", pixclk, (long)div);
return div;
struct fb_info *info)
{
struct s3c2410fb_info *fbi = info->par;
+ struct s3c2410fb_mach_info *mach_info = fbi->dev->platform_data;
+ struct s3c2410fb_display *display = NULL;
+ struct s3c2410fb_display *default_display = mach_info->displays +
+ mach_info->default_display;
+ int type = default_display->type;
+ unsigned i;
dprintk("check_var(var=%p, info=%p)\n", var, info);
/* validate x/y resolution */
+ /* choose default mode if possible */
+ if (var->yres == default_display->yres &&
+ var->xres == default_display->xres &&
+ var->bits_per_pixel == default_display->bpp)
+ display = default_display;
+ else
+ for (i = 0; i < mach_info->num_displays; i++)
+ if (type == mach_info->displays[i].type &&
+ var->yres == mach_info->displays[i].yres &&
+ var->xres == mach_info->displays[i].xres &&
+ var->bits_per_pixel == mach_info->displays[i].bpp) {
+ display = mach_info->displays + i;
+ break;
+ }
- if (var->yres > fbi->mach_info->yres.max)
- var->yres = fbi->mach_info->yres.max;
- else if (var->yres < fbi->mach_info->yres.min)
- var->yres = fbi->mach_info->yres.min;
-
- if (var->xres > fbi->mach_info->xres.max)
- var->yres = fbi->mach_info->xres.max;
- else if (var->xres < fbi->mach_info->xres.min)
- var->xres = fbi->mach_info->xres.min;
-
- /* validate bpp */
-
- if (var->bits_per_pixel > fbi->mach_info->bpp.max)
- var->bits_per_pixel = fbi->mach_info->bpp.max;
- else if (var->bits_per_pixel < fbi->mach_info->bpp.min)
- var->bits_per_pixel = fbi->mach_info->bpp.min;
+ if (!display) {
+ dprintk("wrong resolution or depth %dx%d at %d bpp\n",
+ var->xres, var->yres, var->bits_per_pixel);
+ return -EINVAL;
+ }
+ /* it is always the size as the display */
+ var->xres_virtual = display->xres;
+ var->yres_virtual = display->yres;
+ var->height = display->height;
+ var->width = display->width;
+
+ /* copy lcd settings */
+ var->pixclock = display->pixclock;
+ var->left_margin = display->left_margin;
+ var->right_margin = display->right_margin;
+ var->upper_margin = display->upper_margin;
+ var->lower_margin = display->lower_margin;
+ var->vsync_len = display->vsync_len;
+ var->hsync_len = display->hsync_len;
+
+ fbi->regs.lcdcon5 = display->lcdcon5;
+ /* set display type */
+ fbi->regs.lcdcon1 = display->type;
+
+ var->transp.offset = 0;
+ var->transp.length = 0;
/* set r/g/b positions */
switch (var->bits_per_pixel) {
- case 1:
- case 2:
- case 4:
- var->red.offset = 0;
- var->red.length = var->bits_per_pixel;
- var->green = var->red;
- var->blue = var->red;
- var->transp.offset = 0;
- var->transp.length = 0;
- break;
- case 8:
- if ( fbi->mach_info->type != S3C2410_LCDCON1_TFT ) {
- /* 8 bpp 332 */
- var->red.length = 3;
- var->red.offset = 5;
- var->green.length = 3;
- var->green.offset = 2;
- var->blue.length = 2;
- var->blue.offset = 0;
- var->transp.length = 0;
- } else {
- var->red.offset = 0;
- var->red.length = var->bits_per_pixel;
- var->green = var->red;
- var->blue = var->red;
- var->transp.offset = 0;
- var->transp.length = 0;
- }
- break;
- case 12:
- /* 12 bpp 444 */
- var->red.length = 4;
- var->red.offset = 8;
- var->green.length = 4;
- var->green.offset = 4;
- var->blue.length = 4;
+ case 1:
+ case 2:
+ case 4:
+ var->red.offset = 0;
+ var->red.length = var->bits_per_pixel;
+ var->green = var->red;
+ var->blue = var->red;
+ break;
+ case 8:
+ if (display->type != S3C2410_LCDCON1_TFT) {
+ /* 8 bpp 332 */
+ var->red.length = 3;
+ var->red.offset = 5;
+ var->green.length = 3;
+ var->green.offset = 2;
+ var->blue.length = 2;
var->blue.offset = 0;
- var->transp.length = 0;
- break;
-
- default:
- case 16:
- if (fbi->regs.lcdcon5 & S3C2410_LCDCON5_FRM565 ) {
- /* 16 bpp, 565 format */
- var->red.offset = 11;
- var->green.offset = 5;
- var->blue.offset = 0;
- var->red.length = 5;
- var->green.length = 6;
- var->blue.length = 5;
- var->transp.length = 0;
- } else {
- /* 16 bpp, 5551 format */
- var->red.offset = 11;
- var->green.offset = 6;
- var->blue.offset = 1;
- var->red.length = 5;
- var->green.length = 5;
- var->blue.length = 5;
- var->transp.length = 0;
- }
- break;
- case 24:
- /* 24 bpp 888 */
+ } else {
+ var->red.offset = 0;
var->red.length = 8;
- var->red.offset = 16;
- var->green.length = 8;
- var->green.offset = 8;
- var->blue.length = 8;
- var->blue.offset = 0;
- var->transp.length = 0;
- break;
-
+ var->green = var->red;
+ var->blue = var->red;
+ }
+ break;
+ case 12:
+ /* 12 bpp 444 */
+ var->red.length = 4;
+ var->red.offset = 8;
+ var->green.length = 4;
+ var->green.offset = 4;
+ var->blue.length = 4;
+ var->blue.offset = 0;
+ break;
+ default:
+ case 16:
+ if (display->lcdcon5 & S3C2410_LCDCON5_FRM565) {
+ /* 16 bpp, 565 format */
+ var->red.offset = 11;
+ var->green.offset = 5;
+ var->blue.offset = 0;
+ var->red.length = 5;
+ var->green.length = 6;
+ var->blue.length = 5;
+ } else {
+ /* 16 bpp, 5551 format */
+ var->red.offset = 11;
+ var->green.offset = 6;
+ var->blue.offset = 1;
+ var->red.length = 5;
+ var->green.length = 5;
+ var->blue.length = 5;
+ }
+ break;
+ case 32:
+ /* 24 bpp 888 and 8 dummy */
+ var->red.length = 8;
+ var->red.offset = 16;
+ var->green.length = 8;
+ var->green.offset = 8;
+ var->blue.length = 8;
+ var->blue.offset = 0;
+ break;
}
return 0;
}
-
-/* s3c2410fb_activate_var
+/* s3c2410fb_calculate_stn_lcd_regs
*
- * activate (set) the controller from the given framebuffer
- * information
-*/
-
-static void s3c2410fb_activate_var(struct s3c2410fb_info *fbi,
- struct fb_var_screeninfo *var)
+ * calculate register values from var settings
+ */
+static void s3c2410fb_calculate_stn_lcd_regs(const struct fb_info *info,
+ struct s3c2410fb_hw *regs)
{
- int hs;
+ const struct s3c2410fb_info *fbi = info->par;
+ const struct fb_var_screeninfo *var = &info->var;
+ int type = regs->lcdcon1 & ~S3C2410_LCDCON1_TFT;
+ int hs = var->xres >> 2;
+ unsigned wdly = (var->left_margin >> 4) - 1;
+ unsigned wlh = (var->hsync_len >> 4) - 1;
- fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_MODEMASK;
- fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_TFT;
+ if (type != S3C2410_LCDCON1_STN4)
+ hs >>= 1;
- dprintk("%s: var->xres = %d\n", __FUNCTION__, var->xres);
- dprintk("%s: var->yres = %d\n", __FUNCTION__, var->yres);
- dprintk("%s: var->bpp = %d\n", __FUNCTION__, var->bits_per_pixel);
+ switch (var->bits_per_pixel) {
+ case 1:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN1BPP;
+ break;
+ case 2:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN2GREY;
+ break;
+ case 4:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN4GREY;
+ break;
+ case 8:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN8BPP;
+ hs *= 3;
+ break;
+ case 12:
+ regs->lcdcon1 |= S3C2410_LCDCON1_STN12BPP;
+ hs *= 3;
+ break;
- fbi->regs.lcdcon1 |= fbi->mach_info->type;
-
- if (fbi->mach_info->type == S3C2410_LCDCON1_TFT)
- switch (var->bits_per_pixel) {
- case 1:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT1BPP;
- break;
- case 2:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT2BPP;
- break;
- case 4:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT4BPP;
- break;
- case 8:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT8BPP;
- break;
- case 16:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_TFT16BPP;
- break;
-
- default:
- /* invalid pixel depth */
- dev_err(fbi->dev, "invalid bpp %d\n", var->bits_per_pixel);
- }
- else
- switch (var->bits_per_pixel) {
- case 1:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN1BPP;
- break;
- case 2:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN2GREY;
- break;
- case 4:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN4GREY;
- break;
- case 8:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN8BPP;
- break;
- case 12:
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_STN12BPP;
- break;
-
- default:
- /* invalid pixel depth */
- dev_err(fbi->dev, "invalid bpp %d\n", var->bits_per_pixel);
- }
+ default:
+ /* invalid pixel depth */
+ dev_err(fbi->dev, "invalid bpp %d\n",
+ var->bits_per_pixel);
+ }
+ /* update X/Y info */
+ dprintk("setting horz: lft=%d, rt=%d, sync=%d\n",
+ var->left_margin, var->right_margin, var->hsync_len);
- /* check to see if we need to update sync/borders */
+ regs->lcdcon2 = S3C2410_LCDCON2_LINEVAL(var->yres - 1);
- if (!fbi->mach_info->fixed_syncs) {
- dprintk("setting vert: up=%d, low=%d, sync=%d\n",
- var->upper_margin, var->lower_margin,
- var->vsync_len);
+ if (wdly > 3)
+ wdly = 3;
- dprintk("setting horz: lft=%d, rt=%d, sync=%d\n",
- var->left_margin, var->right_margin,
- var->hsync_len);
+ if (wlh > 3)
+ wlh = 3;
- fbi->regs.lcdcon2 =
- S3C2410_LCDCON2_VBPD(var->upper_margin - 1) |
- S3C2410_LCDCON2_VFPD(var->lower_margin - 1) |
- S3C2410_LCDCON2_VSPW(var->vsync_len - 1);
+ regs->lcdcon3 = S3C2410_LCDCON3_WDLY(wdly) |
+ S3C2410_LCDCON3_LINEBLANK(var->right_margin / 8) |
+ S3C2410_LCDCON3_HOZVAL(hs - 1);
- fbi->regs.lcdcon3 =
- S3C2410_LCDCON3_HBPD(var->right_margin - 1) |
- S3C2410_LCDCON3_HFPD(var->left_margin - 1);
+ regs->lcdcon4 = S3C2410_LCDCON4_WLH(wlh);
+}
- fbi->regs.lcdcon4 &= ~S3C2410_LCDCON4_HSPW(0xff);
- fbi->regs.lcdcon4 |= S3C2410_LCDCON4_HSPW(var->hsync_len - 1);
- }
+/* s3c2410fb_calculate_tft_lcd_regs
+ *
+ * calculate register values from var settings
+ */
+static void s3c2410fb_calculate_tft_lcd_regs(const struct fb_info *info,
+ struct s3c2410fb_hw *regs)
+{
+ const struct s3c2410fb_info *fbi = info->par;
+ const struct fb_var_screeninfo *var = &info->var;
+ switch (var->bits_per_pixel) {
+ case 1:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT1BPP;
+ break;
+ case 2:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT2BPP;
+ break;
+ case 4:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT4BPP;
+ break;
+ case 8:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT8BPP;
+ regs->lcdcon5 |= S3C2410_LCDCON5_BSWP |
+ S3C2410_LCDCON5_FRM565;
+ regs->lcdcon5 &= ~S3C2410_LCDCON5_HWSWP;
+ break;
+ case 16:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT16BPP;
+ regs->lcdcon5 &= ~S3C2410_LCDCON5_BSWP;
+ regs->lcdcon5 |= S3C2410_LCDCON5_HWSWP;
+ break;
+ case 32:
+ regs->lcdcon1 |= S3C2410_LCDCON1_TFT24BPP;
+ regs->lcdcon5 &= ~(S3C2410_LCDCON5_BSWP |
+ S3C2410_LCDCON5_HWSWP |
+ S3C2410_LCDCON5_BPP24BL);
+ break;
+ default:
+ /* invalid pixel depth */
+ dev_err(fbi->dev, "invalid bpp %d\n",
+ var->bits_per_pixel);
+ }
/* update X/Y info */
+ dprintk("setting vert: up=%d, low=%d, sync=%d\n",
+ var->upper_margin, var->lower_margin, var->vsync_len);
- fbi->regs.lcdcon2 &= ~S3C2410_LCDCON2_LINEVAL(0x3ff);
- fbi->regs.lcdcon2 |= S3C2410_LCDCON2_LINEVAL(var->yres - 1);
-
- switch(fbi->mach_info->type) {
- case S3C2410_LCDCON1_DSCAN4:
- case S3C2410_LCDCON1_STN8:
- hs = var->xres / 8;
- break;
- case S3C2410_LCDCON1_STN4:
- hs = var->xres / 4;
- break;
- default:
- case S3C2410_LCDCON1_TFT:
- hs = var->xres;
- break;
+ dprintk("setting horz: lft=%d, rt=%d, sync=%d\n",
+ var->left_margin, var->right_margin, var->hsync_len);
- }
-
- /* Special cases : STN color displays */
- if ( ((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN8BPP) \
- || ((fbi->regs.lcdcon1 & S3C2410_LCDCON1_MODEMASK) == S3C2410_LCDCON1_STN12BPP) ) {
- hs = hs * 3;
- }
+ regs->lcdcon2 = S3C2410_LCDCON2_LINEVAL(var->yres - 1) |
+ S3C2410_LCDCON2_VBPD(var->upper_margin - 1) |
+ S3C2410_LCDCON2_VFPD(var->lower_margin - 1) |
+ S3C2410_LCDCON2_VSPW(var->vsync_len - 1);
+ regs->lcdcon3 = S3C2410_LCDCON3_HBPD(var->right_margin - 1) |
+ S3C2410_LCDCON3_HFPD(var->left_margin - 1) |
+ S3C2410_LCDCON3_HOZVAL(var->xres - 1);
- fbi->regs.lcdcon3 &= ~S3C2410_LCDCON3_HOZVAL(0x7ff);
- fbi->regs.lcdcon3 |= S3C2410_LCDCON3_HOZVAL(hs - 1);
+ regs->lcdcon4 = S3C2410_LCDCON4_HSPW(var->hsync_len - 1);
+}
- if (var->pixclock > 0) {
- int clkdiv = s3c2410fb_calc_pixclk(fbi, var->pixclock);
+/* s3c2410fb_activate_var
+ *
+ * activate (set) the controller from the given framebuffer
+ * information
+ */
+static void s3c2410fb_activate_var(struct fb_info *info)
+{
+ struct s3c2410fb_info *fbi = info->par;
+ void __iomem *regs = fbi->io;
+ int type = fbi->regs.lcdcon1 & S3C2410_LCDCON1_TFT;
+ struct fb_var_screeninfo *var = &info->var;
+ int clkdiv = s3c2410fb_calc_pixclk(fbi, var->pixclock) / 2;
- if (fbi->mach_info->type == S3C2410_LCDCON1_TFT) {
- clkdiv = (clkdiv / 2) -1;
- if (clkdiv < 0)
- clkdiv = 0;
- }
- else {
- clkdiv = (clkdiv / 2);
- if (clkdiv < 2)
- clkdiv = 2;
- }
+ dprintk("%s: var->xres = %d\n", __FUNCTION__, var->xres);
+ dprintk("%s: var->yres = %d\n", __FUNCTION__, var->yres);
+ dprintk("%s: var->bpp = %d\n", __FUNCTION__, var->bits_per_pixel);
- fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_CLKVAL(0x3ff);
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_CLKVAL(clkdiv);
+ if (type == S3C2410_LCDCON1_TFT) {
+ s3c2410fb_calculate_tft_lcd_regs(info, &fbi->regs);
+ --clkdiv;
+ if (clkdiv < 0)
+ clkdiv = 0;
+ } else {
+ s3c2410fb_calculate_stn_lcd_regs(info, &fbi->regs);
+ if (clkdiv < 2)
+ clkdiv = 2;
}
+ fbi->regs.lcdcon1 |= S3C2410_LCDCON1_CLKVAL(clkdiv);
+
/* write new registers */
dprintk("new register set:\n");
dprintk("lcdcon[4] = 0x%08lx\n", fbi->regs.lcdcon4);
dprintk("lcdcon[5] = 0x%08lx\n", fbi->regs.lcdcon5);
- writel(fbi->regs.lcdcon1 & ~S3C2410_LCDCON1_ENVID, S3C2410_LCDCON1);
- writel(fbi->regs.lcdcon2, S3C2410_LCDCON2);
- writel(fbi->regs.lcdcon3, S3C2410_LCDCON3);
- writel(fbi->regs.lcdcon4, S3C2410_LCDCON4);
- writel(fbi->regs.lcdcon5, S3C2410_LCDCON5);
+ writel(fbi->regs.lcdcon1 & ~S3C2410_LCDCON1_ENVID,
+ regs + S3C2410_LCDCON1);
+ writel(fbi->regs.lcdcon2, regs + S3C2410_LCDCON2);
+ writel(fbi->regs.lcdcon3, regs + S3C2410_LCDCON3);
+ writel(fbi->regs.lcdcon4, regs + S3C2410_LCDCON4);
+ writel(fbi->regs.lcdcon5, regs + S3C2410_LCDCON5);
/* set lcd address pointers */
- s3c2410fb_set_lcdaddr(fbi);
+ s3c2410fb_set_lcdaddr(info);
- writel(fbi->regs.lcdcon1, S3C2410_LCDCON1);
+ fbi->regs.lcdcon1 |= S3C2410_LCDCON1_ENVID,
+ writel(fbi->regs.lcdcon1, regs + S3C2410_LCDCON1);
}
-
/*
- * s3c2410fb_set_par - Optional function. Alters the hardware state.
+ * s3c2410fb_set_par - Alters the hardware state.
* @info: frame buffer structure that represents a single frame buffer
*
*/
static int s3c2410fb_set_par(struct fb_info *info)
{
- struct s3c2410fb_info *fbi = info->par;
struct fb_var_screeninfo *var = &info->var;
- switch (var->bits_per_pixel)
- {
- case 16:
- fbi->fb->fix.visual = FB_VISUAL_TRUECOLOR;
- break;
- case 1:
- fbi->fb->fix.visual = FB_VISUAL_MONO01;
- break;
- default:
- fbi->fb->fix.visual = FB_VISUAL_PSEUDOCOLOR;
- break;
+ switch (var->bits_per_pixel) {
+ case 32:
+ case 16:
+ case 12:
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+ break;
+ case 1:
+ info->fix.visual = FB_VISUAL_MONO01;
+ break;
+ default:
+ info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+ break;
}
- fbi->fb->fix.line_length = (var->width*var->bits_per_pixel)/8;
+ info->fix.line_length = (var->width * var->bits_per_pixel) / 8;
/* activate this new configuration */
- s3c2410fb_activate_var(fbi, var);
+ s3c2410fb_activate_var(info);
return 0;
}
{
unsigned long flags;
unsigned long irqen;
+ void __iomem *regs = fbi->io;
local_irq_save(flags);
fbi->palette_ready = 1;
/* enable IRQ */
- irqen = readl(S3C2410_LCDINTMSK);
+ irqen = readl(regs + S3C2410_LCDINTMSK);
irqen &= ~S3C2410_LCDINT_FRSYNC;
- writel(irqen, S3C2410_LCDINTMSK);
+ writel(irqen, regs + S3C2410_LCDINTMSK);
}
local_irq_restore(flags);
}
/* from pxafb.c */
-static inline unsigned int chan_to_field(unsigned int chan, struct fb_bitfield *bf)
+static inline unsigned int chan_to_field(unsigned int chan,
+ struct fb_bitfield *bf)
{
chan &= 0xffff;
chan >>= 16 - bf->length;
unsigned transp, struct fb_info *info)
{
struct s3c2410fb_info *fbi = info->par;
+ void __iomem *regs = fbi->io;
unsigned int val;
- /* dprintk("setcol: regno=%d, rgb=%d,%d,%d\n", regno, red, green, blue); */
+ /* dprintk("setcol: regno=%d, rgb=%d,%d,%d\n",
+ regno, red, green, blue); */
- switch (fbi->fb->fix.visual) {
+ switch (info->fix.visual) {
case FB_VISUAL_TRUECOLOR:
- /* true-colour, use pseuo-palette */
+ /* true-colour, use pseudo-palette */
if (regno < 16) {
- u32 *pal = fbi->fb->pseudo_palette;
+ u32 *pal = info->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);
+ val = chan_to_field(red, &info->var.red);
+ val |= chan_to_field(green, &info->var.green);
+ val |= chan_to_field(blue, &info->var.blue);
pal[regno] = val;
}
if (regno < 256) {
/* currently assume RGB 5-6-5 mode */
- val = ((red >> 0) & 0xf800);
- val |= ((green >> 5) & 0x07e0);
- val |= ((blue >> 11) & 0x001f);
+ val = (red >> 0) & 0xf800;
+ val |= (green >> 5) & 0x07e0;
+ val |= (blue >> 11) & 0x001f;
- writel(val, S3C2410_TFTPAL(regno));
+ writel(val, regs + S3C2410_TFTPAL(regno));
schedule_palette_update(fbi, regno, val);
}
break;
default:
- return 1; /* unknown type */
+ return 1; /* unknown type */
}
return 0;
}
-
-/**
+/*
* s3c2410fb_blank
* @blank_mode: the blank mode we want.
* @info: frame buffer structure that represents a single frame buffer
*/
static int s3c2410fb_blank(int blank_mode, struct fb_info *info)
{
- dprintk("blank(mode=%d, info=%p)\n", blank_mode, info);
+ struct s3c2410fb_info *fbi = info->par;
+ void __iomem *regs = fbi->io;
- if (mach_info == NULL)
- return -EINVAL;
+ dprintk("blank(mode=%d, info=%p)\n", blank_mode, info);
if (blank_mode == FB_BLANK_UNBLANK)
- writel(0x0, S3C2410_TPAL);
+ writel(0x0, regs + S3C2410_TPAL);
else {
dprintk("setting TPAL to output 0x000000\n");
- writel(S3C2410_TPAL_EN, S3C2410_TPAL);
+ writel(S3C2410_TPAL_EN, regs + S3C2410_TPAL);
}
return 0;
}
-static int s3c2410fb_debug_show(struct device *dev, struct device_attribute *attr, char *buf)
+static int s3c2410fb_debug_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%s\n", debug ? "on" : "off");
}
-static int s3c2410fb_debug_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t len)
-{
- if (mach_info == NULL)
- return -EINVAL;
+static int s3c2410fb_debug_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
if (len < 1)
return -EINVAL;
return len;
}
-
-static DEVICE_ATTR(debug, 0666,
- s3c2410fb_debug_show,
- s3c2410fb_debug_store);
+static DEVICE_ATTR(debug, 0666, s3c2410fb_debug_show, s3c2410fb_debug_store);
static struct fb_ops s3c2410fb_ops = {
.owner = THIS_MODULE,
.fb_imageblit = cfb_imageblit,
};
-
/*
* s3c2410fb_map_video_memory():
* Allocates the DRAM memory for the frame buffer. This buffer is
* cache. Once this area is remapped, all virtual memory
* access to the video memory should occur at the new region.
*/
-static int __init s3c2410fb_map_video_memory(struct s3c2410fb_info *fbi)
+static int __init s3c2410fb_map_video_memory(struct fb_info *info)
{
- dprintk("map_video_memory(fbi=%p)\n", fbi);
+ struct s3c2410fb_info *fbi = info->par;
+ dma_addr_t map_dma;
+ unsigned map_size = PAGE_ALIGN(info->fix.smem_len);
- fbi->map_size = PAGE_ALIGN(fbi->fb->fix.smem_len + PAGE_SIZE);
- fbi->map_cpu = dma_alloc_writecombine(fbi->dev, fbi->map_size,
- &fbi->map_dma, GFP_KERNEL);
+ dprintk("map_video_memory(fbi=%p)\n", fbi);
- fbi->map_size = fbi->fb->fix.smem_len;
+ info->screen_base = dma_alloc_writecombine(fbi->dev, map_size,
+ &map_dma, GFP_KERNEL);
- if (fbi->map_cpu) {
+ if (info->screen_base) {
/* prevent initial garbage on screen */
dprintk("map_video_memory: clear %p:%08x\n",
- fbi->map_cpu, fbi->map_size);
- memset(fbi->map_cpu, 0xf0, fbi->map_size);
+ info->screen_base, map_size);
+ memset(info->screen_base, 0xf0, map_size);
- fbi->screen_dma = fbi->map_dma;
- fbi->fb->screen_base = fbi->map_cpu;
- fbi->fb->fix.smem_start = fbi->screen_dma;
+ info->fix.smem_start = map_dma;
- dprintk("map_video_memory: dma=%08x cpu=%p size=%08x\n",
- fbi->map_dma, fbi->map_cpu, fbi->fb->fix.smem_len);
+ dprintk("map_video_memory: dma=%08lx cpu=%p size=%08x\n",
+ info->fix.smem_start, info->screen_base, map_size);
}
- return fbi->map_cpu ? 0 : -ENOMEM;
+ return info->screen_base ? 0 : -ENOMEM;
}
-static inline void s3c2410fb_unmap_video_memory(struct s3c2410fb_info *fbi)
+static inline void s3c2410fb_unmap_video_memory(struct fb_info *info)
{
- dma_free_writecombine(fbi->dev,fbi->map_size,fbi->map_cpu, fbi->map_dma);
+ struct s3c2410fb_info *fbi = info->par;
+
+ dma_free_writecombine(fbi->dev, PAGE_ALIGN(info->fix.smem_len),
+ info->screen_base, info->fix.smem_start);
}
static inline void modify_gpio(void __iomem *reg,
writel(tmp | set, reg);
}
-
/*
* s3c2410fb_init_registers - Initialise all LCD-related registers
*/
-
-static int s3c2410fb_init_registers(struct s3c2410fb_info *fbi)
+static int s3c2410fb_init_registers(struct fb_info *info)
{
+ struct s3c2410fb_info *fbi = info->par;
+ struct s3c2410fb_mach_info *mach_info = fbi->dev->platform_data;
unsigned long flags;
+ void __iomem *regs = fbi->io;
/* Initialise LCD with values from haret */
local_irq_restore(flags);
- writel(fbi->regs.lcdcon1, S3C2410_LCDCON1);
- writel(fbi->regs.lcdcon2, S3C2410_LCDCON2);
- writel(fbi->regs.lcdcon3, S3C2410_LCDCON3);
- writel(fbi->regs.lcdcon4, S3C2410_LCDCON4);
- writel(fbi->regs.lcdcon5, S3C2410_LCDCON5);
-
- s3c2410fb_set_lcdaddr(fbi);
-
dprintk("LPCSEL = 0x%08lx\n", mach_info->lpcsel);
- writel(mach_info->lpcsel, S3C2410_LPCSEL);
+ writel(mach_info->lpcsel, regs + S3C2410_LPCSEL);
- dprintk("replacing TPAL %08x\n", readl(S3C2410_TPAL));
+ dprintk("replacing TPAL %08x\n", readl(regs + S3C2410_TPAL));
/* ensure temporary palette disabled */
- writel(0x00, S3C2410_TPAL);
+ writel(0x00, regs + S3C2410_TPAL);
- /* Enable video by setting the ENVID bit to 1 */
- fbi->regs.lcdcon1 |= S3C2410_LCDCON1_ENVID;
- writel(fbi->regs.lcdcon1, S3C2410_LCDCON1);
return 0;
}
static void s3c2410fb_write_palette(struct s3c2410fb_info *fbi)
{
unsigned int i;
- unsigned long ent;
+ void __iomem *regs = fbi->io;
fbi->palette_ready = 0;
for (i = 0; i < 256; i++) {
- if ((ent = fbi->palette_buffer[i]) == PALETTE_BUFF_CLEAR)
+ unsigned long ent = fbi->palette_buffer[i];
+ if (ent == PALETTE_BUFF_CLEAR)
continue;
- writel(ent, S3C2410_TFTPAL(i));
+ writel(ent, regs + S3C2410_TFTPAL(i));
/* it seems the only way to know exactly
* if the palette wrote ok, is to check
* to see if the value verifies ok
*/
- if (readw(S3C2410_TFTPAL(i)) == ent)
+ if (readw(regs + S3C2410_TFTPAL(i)) == ent)
fbi->palette_buffer[i] = PALETTE_BUFF_CLEAR;
else
fbi->palette_ready = 1; /* retry */
static irqreturn_t s3c2410fb_irq(int irq, void *dev_id)
{
struct s3c2410fb_info *fbi = dev_id;
- unsigned long lcdirq = readl(S3C2410_LCDINTPND);
+ void __iomem *regs = fbi->io;
+ unsigned long lcdirq = readl(regs + S3C2410_LCDINTPND);
if (lcdirq & S3C2410_LCDINT_FRSYNC) {
if (fbi->palette_ready)
s3c2410fb_write_palette(fbi);
- writel(S3C2410_LCDINT_FRSYNC, S3C2410_LCDINTPND);
- writel(S3C2410_LCDINT_FRSYNC, S3C2410_LCDSRCPND);
+ writel(S3C2410_LCDINT_FRSYNC, regs + S3C2410_LCDINTPND);
+ writel(S3C2410_LCDINT_FRSYNC, regs + S3C2410_LCDSRCPND);
}
return IRQ_HANDLED;
}
-static char driver_name[]="s3c2410fb";
+static char driver_name[] = "s3c2410fb";
static int __init s3c2410fb_probe(struct platform_device *pdev)
{
struct s3c2410fb_info *info;
- struct fb_info *fbinfo;
- struct s3c2410fb_hw *mregs;
+ struct s3c2410fb_display *display;
+ struct fb_info *fbinfo;
+ struct s3c2410fb_mach_info *mach_info;
+ struct resource *res;
int ret;
int irq;
int i;
+ int size;
u32 lcdcon1;
mach_info = pdev->dev.platform_data;
if (mach_info == NULL) {
- dev_err(&pdev->dev,"no platform data for lcd, cannot attach\n");
+ dev_err(&pdev->dev,
+ "no platform data for lcd, cannot attach\n");
return -EINVAL;
}
- mregs = &mach_info->regs;
+ display = mach_info->displays + mach_info->default_display;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
}
fbinfo = framebuffer_alloc(sizeof(struct s3c2410fb_info), &pdev->dev);
- if (!fbinfo) {
+ if (!fbinfo)
return -ENOMEM;
- }
+ platform_set_drvdata(pdev, fbinfo);
info = fbinfo->par;
- info->fb = fbinfo;
- platform_set_drvdata(pdev, fbinfo);
+ info->dev = &pdev->dev;
- dprintk("devinit\n");
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "failed to get memory registers\n");
+ ret = -ENXIO;
+ goto dealloc_fb;
+ }
- strcpy(fbinfo->fix.id, driver_name);
+ size = (res->end - res->start) + 1;
+ info->mem = request_mem_region(res->start, size, pdev->name);
+ if (info->mem == NULL) {
+ dev_err(&pdev->dev, "failed to get memory region\n");
+ ret = -ENOENT;
+ goto dealloc_fb;
+ }
- memcpy(&info->regs, &mach_info->regs, sizeof(info->regs));
+ info->io = ioremap(res->start, size);
+ if (info->io == NULL) {
+ dev_err(&pdev->dev, "ioremap() of registers failed\n");
+ ret = -ENXIO;
+ goto release_mem;
+ }
- /* Stop the video and unset ENVID if set */
- info->regs.lcdcon1 &= ~S3C2410_LCDCON1_ENVID;
- lcdcon1 = readl(S3C2410_LCDCON1);
- writel(lcdcon1 & ~S3C2410_LCDCON1_ENVID, S3C2410_LCDCON1);
+ dprintk("devinit\n");
- info->mach_info = pdev->dev.platform_data;
+ strcpy(fbinfo->fix.id, driver_name);
+
+ /* Stop the video */
+ lcdcon1 = readl(info->io + S3C2410_LCDCON1);
+ writel(lcdcon1 & ~S3C2410_LCDCON1_ENVID, info->io + S3C2410_LCDCON1);
fbinfo->fix.type = FB_TYPE_PACKED_PIXELS;
fbinfo->fix.type_aux = 0;
fbinfo->var.nonstd = 0;
fbinfo->var.activate = FB_ACTIVATE_NOW;
- fbinfo->var.height = mach_info->height;
- fbinfo->var.width = mach_info->width;
fbinfo->var.accel_flags = 0;
fbinfo->var.vmode = FB_VMODE_NONINTERLACED;
fbinfo->flags = FBINFO_FLAG_DEFAULT;
fbinfo->pseudo_palette = &info->pseudo_pal;
- fbinfo->var.xres = mach_info->xres.defval;
- fbinfo->var.xres_virtual = mach_info->xres.defval;
- fbinfo->var.yres = mach_info->yres.defval;
- fbinfo->var.yres_virtual = mach_info->yres.defval;
- fbinfo->var.bits_per_pixel = mach_info->bpp.defval;
-
- fbinfo->var.upper_margin = S3C2410_LCDCON2_GET_VBPD(mregs->lcdcon2) + 1;
- fbinfo->var.lower_margin = S3C2410_LCDCON2_GET_VFPD(mregs->lcdcon2) + 1;
- fbinfo->var.vsync_len = S3C2410_LCDCON2_GET_VSPW(mregs->lcdcon2) + 1;
-
- fbinfo->var.left_margin = S3C2410_LCDCON3_GET_HFPD(mregs->lcdcon3) + 1;
- fbinfo->var.right_margin = S3C2410_LCDCON3_GET_HBPD(mregs->lcdcon3) + 1;
- fbinfo->var.hsync_len = S3C2410_LCDCON4_GET_HSPW(mregs->lcdcon4) + 1;
-
- fbinfo->var.red.offset = 11;
- fbinfo->var.green.offset = 5;
- fbinfo->var.blue.offset = 0;
- fbinfo->var.transp.offset = 0;
- fbinfo->var.red.length = 5;
- fbinfo->var.green.length = 6;
- fbinfo->var.blue.length = 5;
- fbinfo->var.transp.length = 0;
- fbinfo->fix.smem_len = mach_info->xres.max *
- mach_info->yres.max *
- mach_info->bpp.max / 8;
-
for (i = 0; i < 256; i++)
info->palette_buffer[i] = PALETTE_BUFF_CLEAR;
- if (!request_mem_region((unsigned long)S3C24XX_VA_LCD, SZ_1M, "s3c2410-lcd")) {
- ret = -EBUSY;
- goto dealloc_fb;
- }
-
-
- dprintk("got LCD region\n");
-
ret = request_irq(irq, s3c2410fb_irq, IRQF_DISABLED, pdev->name, info);
if (ret) {
dev_err(&pdev->dev, "cannot get irq %d - err %d\n", irq, ret);
ret = -EBUSY;
- goto release_mem;
+ goto release_regs;
}
info->clk = clk_get(NULL, "lcd");
msleep(1);
+ /* find maximum required memory size for display */
+ for (i = 0; i < mach_info->num_displays; i++) {
+ unsigned long smem_len = mach_info->displays[i].xres;
+
+ smem_len *= mach_info->displays[i].yres;
+ smem_len *= mach_info->displays[i].bpp;
+ smem_len >>= 3;
+ if (fbinfo->fix.smem_len < smem_len)
+ fbinfo->fix.smem_len = smem_len;
+ }
+
/* Initialize video memory */
- ret = s3c2410fb_map_video_memory(info);
+ ret = s3c2410fb_map_video_memory(fbinfo);
if (ret) {
- printk( KERN_ERR "Failed to allocate video RAM: %d\n", ret);
+ printk(KERN_ERR "Failed to allocate video RAM: %d\n", ret);
ret = -ENOMEM;
goto release_clock;
}
+
dprintk("got video memory\n");
- ret = s3c2410fb_init_registers(info);
+ fbinfo->var.xres = display->xres;
+ fbinfo->var.yres = display->yres;
+ fbinfo->var.bits_per_pixel = display->bpp;
+
+ s3c2410fb_init_registers(fbinfo);
- ret = s3c2410fb_check_var(&fbinfo->var, fbinfo);
+ s3c2410fb_check_var(&fbinfo->var, fbinfo);
ret = register_framebuffer(fbinfo);
if (ret < 0) {
- printk(KERN_ERR "Failed to register framebuffer device: %d\n", ret);
+ printk(KERN_ERR "Failed to register framebuffer device: %d\n",
+ ret);
goto free_video_memory;
}
return 0;
free_video_memory:
- s3c2410fb_unmap_video_memory(info);
+ s3c2410fb_unmap_video_memory(fbinfo);
release_clock:
clk_disable(info->clk);
clk_put(info->clk);
release_irq:
- free_irq(irq,info);
+ free_irq(irq, info);
+release_regs:
+ iounmap(info->io);
release_mem:
- release_mem_region((unsigned long)S3C24XX_VA_LCD, S3C24XX_SZ_LCD);
+ release_resource(info->mem);
+ kfree(info->mem);
dealloc_fb:
+ platform_set_drvdata(pdev, NULL);
framebuffer_release(fbinfo);
return ret;
}
/* s3c2410fb_stop_lcd
*
* shutdown the lcd controller
-*/
-
+ */
static void s3c2410fb_stop_lcd(struct s3c2410fb_info *fbi)
{
unsigned long flags;
local_irq_save(flags);
fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_ENVID;
- writel(fbi->regs.lcdcon1, S3C2410_LCDCON1);
+ writel(fbi->regs.lcdcon1, fbi->io + S3C2410_LCDCON1);
local_irq_restore(flags);
}
*/
static int s3c2410fb_remove(struct platform_device *pdev)
{
- struct fb_info *fbinfo = platform_get_drvdata(pdev);
+ struct fb_info *fbinfo = platform_get_drvdata(pdev);
struct s3c2410fb_info *info = fbinfo->par;
int irq;
+ unregister_framebuffer(fbinfo);
+
s3c2410fb_stop_lcd(info);
msleep(1);
- s3c2410fb_unmap_video_memory(info);
+ s3c2410fb_unmap_video_memory(fbinfo);
- if (info->clk) {
- clk_disable(info->clk);
- clk_put(info->clk);
- info->clk = NULL;
+ if (info->clk) {
+ clk_disable(info->clk);
+ clk_put(info->clk);
+ info->clk = NULL;
}
irq = platform_get_irq(pdev, 0);
- free_irq(irq,info);
- release_mem_region((unsigned long)S3C24XX_VA_LCD, S3C24XX_SZ_LCD);
- unregister_framebuffer(fbinfo);
+ free_irq(irq, info);
+
+ iounmap(info->io);
+
+ release_resource(info->mem);
+ kfree(info->mem);
+
+ platform_set_drvdata(pdev, NULL);
+ framebuffer_release(fbinfo);
return 0;
}
#ifdef CONFIG_PM
/* suspend and resume support for the lcd controller */
-
static int s3c2410fb_suspend(struct platform_device *dev, pm_message_t state)
{
struct fb_info *fbinfo = platform_get_drvdata(dev);
},
};
-int __devinit s3c2410fb_init(void)
+int __init s3c2410fb_init(void)
{
return platform_driver_register(&s3c2410fb_driver);
}
platform_driver_unregister(&s3c2410fb_driver);
}
-
module_init(s3c2410fb_init);
module_exit(s3c2410fb_cleanup);
-MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>, Ben Dooks <ben-linux@fluff.org>");
+MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>, "
+ "Ben Dooks <ben-linux@fluff.org>");
MODULE_DESCRIPTION("Framebuffer driver for the s3c2410");
MODULE_LICENSE("GPL");
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff