diff options
Diffstat (limited to 'drivers/video/da8xx-fb.c')
| -rw-r--r-- | drivers/video/da8xx-fb.c | 79 |
1 files changed, 71 insertions, 8 deletions
diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c index 29577bf1f559..47118c75a4c0 100644 --- a/drivers/video/da8xx-fb.c +++ b/drivers/video/da8xx-fb.c @@ -32,6 +32,7 @@ #include <linux/console.h> #include <linux/slab.h> #include <video/da8xx-fb.h> +#include <asm/div64.h> #define DRIVER_NAME "da8xx_lcdc" @@ -161,6 +162,7 @@ struct da8xx_fb_par { int vsync_timeout; #ifdef CONFIG_CPU_FREQ struct notifier_block freq_transition; + unsigned int lcd_fck_rate; #endif void (*panel_power_ctrl)(int); }; @@ -174,7 +176,6 @@ static struct fb_var_screeninfo da8xx_fb_var __devinitdata = { .activate = 0, .height = -1, .width = -1, - .pixclock = 46666, /* 46us - AUO display */ .accel_flags = 0, .left_margin = LEFT_MARGIN, .right_margin = RIGHT_MARGIN, @@ -238,6 +239,20 @@ static struct da8xx_panel known_lcd_panels[] = { .pxl_clk = 7833600, .invert_pxl_clk = 0, }, + [2] = { + /* Hitachi SP10Q010 */ + .name = "SP10Q010", + .width = 320, + .height = 240, + .hfp = 10, + .hbp = 10, + .hsw = 10, + .vfp = 10, + .vbp = 10, + .vsw = 10, + .pxl_clk = 7833600, + .invert_pxl_clk = 0, + }, }; /* Enable the Raster Engine of the LCD Controller */ @@ -546,7 +561,26 @@ static int fb_setcolreg(unsigned regno, unsigned red, unsigned green, if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) return 1; - if (info->var.bits_per_pixel == 8) { + if (info->var.bits_per_pixel == 4) { + if (regno > 15) + return 1; + + if (info->var.grayscale) { + pal = regno; + } else { + red >>= 4; + green >>= 8; + blue >>= 12; + + pal = (red & 0x0f00); + pal |= (green & 0x00f0); + pal |= (blue & 0x000f); + } + if (regno == 0) + pal |= 0x2000; + palette[regno] = pal; + + } else if (info->var.bits_per_pixel == 8) { red >>= 4; green >>= 8; blue >>= 12; @@ -801,6 +835,7 @@ static int fb_check_var(struct fb_var_screeninfo *var, var->blue.length = 8; var->transp.offset = 0; var->transp.length = 0; + var->nonstd = 0; break; case 4: var->red.offset = 0; @@ -811,6 +846,7 @@ static int fb_check_var(struct fb_var_screeninfo *var, var->blue.length = 4; var->transp.offset = 0; var->transp.length = 0; + var->nonstd = FB_NONSTD_REV_PIX_IN_B; break; case 16: /* RGB 565 */ var->red.offset = 11; @@ -821,6 +857,7 @@ static int fb_check_var(struct fb_var_screeninfo *var, var->blue.length = 5; var->transp.offset = 0; var->transp.length = 0; + var->nonstd = 0; break; default: err = -EINVAL; @@ -840,11 +877,13 @@ static int lcd_da8xx_cpufreq_transition(struct notifier_block *nb, struct da8xx_fb_par *par; par = container_of(nb, struct da8xx_fb_par, freq_transition); - if (val == CPUFREQ_PRECHANGE) { - lcd_disable_raster(); - } else if (val == CPUFREQ_POSTCHANGE) { - lcd_calc_clk_divider(par); - lcd_enable_raster(); + if (val == CPUFREQ_POSTCHANGE) { + if (par->lcd_fck_rate != clk_get_rate(par->lcdc_clk)) { + par->lcd_fck_rate = clk_get_rate(par->lcdc_clk); + lcd_disable_raster(); + lcd_calc_clk_divider(par); + lcd_enable_raster(); + } } return 0; @@ -1048,6 +1087,22 @@ static struct fb_ops da8xx_fb_ops = { .fb_blank = cfb_blank, }; +/* Calculate and return pixel clock period in pico seconds */ +static unsigned int da8xxfb_pixel_clk_period(struct da8xx_fb_par *par) +{ + unsigned int lcd_clk, div; + unsigned int configured_pix_clk; + unsigned long long pix_clk_period_picosec = 1000000000000ULL; + + lcd_clk = clk_get_rate(par->lcdc_clk); + div = lcd_clk / par->pxl_clk; + configured_pix_clk = (lcd_clk / div); + + do_div(pix_clk_period_picosec, configured_pix_clk); + + return pix_clk_period_picosec; +} + static int __devinit fb_probe(struct platform_device *device) { struct da8xx_lcdc_platform_data *fb_pdata = @@ -1137,6 +1192,9 @@ static int __devinit fb_probe(struct platform_device *device) par = da8xx_fb_info->par; par->lcdc_clk = fb_clk; +#ifdef CONFIG_CPU_FREQ + par->lcd_fck_rate = clk_get_rate(fb_clk); +#endif par->pxl_clk = lcdc_info->pxl_clk; if (fb_pdata->panel_power_ctrl) { par->panel_power_ctrl = fb_pdata->panel_power_ctrl; @@ -1209,6 +1267,11 @@ static int __devinit fb_probe(struct platform_device *device) da8xx_fb_var.hsync_len = lcdc_info->hsw; da8xx_fb_var.vsync_len = lcdc_info->vsw; + da8xx_fb_var.right_margin = lcdc_info->hfp; + da8xx_fb_var.left_margin = lcdc_info->hbp; + da8xx_fb_var.lower_margin = lcdc_info->vfp; + da8xx_fb_var.upper_margin = lcdc_info->vbp; + da8xx_fb_var.pixclock = da8xxfb_pixel_clk_period(par); /* Initialize fbinfo */ da8xx_fb_info->flags = FBINFO_FLAG_DEFAULT; @@ -1264,8 +1327,8 @@ static int __devinit fb_probe(struct platform_device *device) irq_freq: #ifdef CONFIG_CPU_FREQ lcd_da8xx_cpufreq_deregister(par); -#endif err_cpu_freq: +#endif unregister_framebuffer(da8xx_fb_info); err_dealloc_cmap: |