diff options
Diffstat (limited to 'drivers/video/pxafb.c')
| -rw-r--r-- | drivers/video/pxafb.c | 160 |
1 files changed, 97 insertions, 63 deletions
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c index 16e37a535d8..efd9333b05c 100644 --- a/drivers/video/pxafb.c +++ b/drivers/video/pxafb.c @@ -36,7 +36,7 @@ #include <linux/init.h> #include <linux/ioport.h> #include <linux/cpufreq.h> -#include <linux/device.h> +#include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <asm/hardware.h> @@ -260,9 +260,9 @@ static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) } #ifdef CONFIG_CPU_FREQ - DPRINTK("dma period = %d ps, clock = %d kHz\n", - pxafb_display_dma_period(var), - get_clk_frequency_khz(0)); + pr_debug("pxafb: dma period = %d ps, clock = %d kHz\n", + pxafb_display_dma_period(var), + get_clk_frequency_khz(0)); #endif return 0; @@ -270,7 +270,7 @@ static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) static inline void pxafb_set_truecolor(u_int is_true_color) { - DPRINTK("true_color = %d\n", is_true_color); + pr_debug("pxafb: true_color = %d\n", is_true_color); // do your machine-specific setup if needed } @@ -284,7 +284,7 @@ static int pxafb_set_par(struct fb_info *info) struct fb_var_screeninfo *var = &info->var; unsigned long palette_mem_size; - DPRINTK("set_par\n"); + pr_debug("pxafb: set_par\n"); if (var->bits_per_pixel == 16) fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR; @@ -308,7 +308,7 @@ static int pxafb_set_par(struct fb_info *info) palette_mem_size = fbi->palette_size * sizeof(u16); - DPRINTK("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size); + pr_debug("pxafb: palette_mem_size = 0x%08lx\n", palette_mem_size); fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - palette_mem_size); fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size; @@ -369,7 +369,7 @@ static int pxafb_blank(int blank, struct fb_info *info) struct pxafb_info *fbi = (struct pxafb_info *)info; int i; - DPRINTK("pxafb_blank: blank=%d\n", blank); + pr_debug("pxafb: blank=%d\n", blank); switch (blank) { case FB_BLANK_POWERDOWN: @@ -468,6 +468,36 @@ static inline unsigned int get_pcd(unsigned int pixclock) } /* + * Some touchscreens need hsync information from the video driver to + * function correctly. We export it here. + */ +static inline void set_hsync_time(struct pxafb_info *fbi, unsigned int pcd) +{ + unsigned long long htime; + + if ((pcd == 0) || (fbi->fb.var.hsync_len == 0)) { + fbi->hsync_time=0; + return; + } + + htime = (unsigned long long)get_lcdclk_frequency_10khz() * 10000; + do_div(htime, pcd * fbi->fb.var.hsync_len); + fbi->hsync_time = htime; +} + +unsigned long pxafb_get_hsync_time(struct device *dev) +{ + struct pxafb_info *fbi = dev_get_drvdata(dev); + + /* If display is blanked/suspended, hsync isn't active */ + if (!fbi || (fbi->state != C_ENABLE)) + return 0; + + return fbi->hsync_time; +} +EXPORT_SYMBOL(pxafb_get_hsync_time); + +/* * pxafb_activate_var(): * Configures LCD Controller based on entries in var parameter. Settings are * only written to the controller if changes were made. @@ -478,15 +508,15 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info * u_long flags; u_int lines_per_panel, pcd = get_pcd(var->pixclock); - DPRINTK("Configuring PXA LCD\n"); + pr_debug("pxafb: Configuring PXA LCD\n"); - DPRINTK("var: xres=%d hslen=%d lm=%d rm=%d\n", - var->xres, var->hsync_len, - var->left_margin, var->right_margin); - DPRINTK("var: yres=%d vslen=%d um=%d bm=%d\n", - var->yres, var->vsync_len, - var->upper_margin, var->lower_margin); - DPRINTK("var: pixclock=%d pcd=%d\n", var->pixclock, pcd); + pr_debug("var: xres=%d hslen=%d lm=%d rm=%d\n", + var->xres, var->hsync_len, + var->left_margin, var->right_margin); + pr_debug("var: yres=%d vslen=%d um=%d bm=%d\n", + var->yres, var->vsync_len, + var->upper_margin, var->lower_margin); + pr_debug("var: pixclock=%d pcd=%d\n", var->pixclock, pcd); #if DEBUG_VAR if (var->xres < 16 || var->xres > 1024) @@ -559,10 +589,10 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info * if (pcd) new_regs.lccr3 |= LCCR3_PixClkDiv(pcd); - DPRINTK("nlccr0 = 0x%08x\n", new_regs.lccr0); - DPRINTK("nlccr1 = 0x%08x\n", new_regs.lccr1); - DPRINTK("nlccr2 = 0x%08x\n", new_regs.lccr2); - DPRINTK("nlccr3 = 0x%08x\n", new_regs.lccr3); + pr_debug("nlccr0 = 0x%08x\n", new_regs.lccr0); + pr_debug("nlccr1 = 0x%08x\n", new_regs.lccr1); + pr_debug("nlccr2 = 0x%08x\n", new_regs.lccr2); + pr_debug("nlccr3 = 0x%08x\n", new_regs.lccr3); /* Update shadow copy atomically */ local_irq_save(flags); @@ -607,30 +637,31 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info * } #if 0 - DPRINTK("fbi->dmadesc_fblow_cpu = 0x%p\n", fbi->dmadesc_fblow_cpu); - DPRINTK("fbi->dmadesc_fbhigh_cpu = 0x%p\n", fbi->dmadesc_fbhigh_cpu); - DPRINTK("fbi->dmadesc_palette_cpu = 0x%p\n", fbi->dmadesc_palette_cpu); - DPRINTK("fbi->dmadesc_fblow_dma = 0x%x\n", fbi->dmadesc_fblow_dma); - DPRINTK("fbi->dmadesc_fbhigh_dma = 0x%x\n", fbi->dmadesc_fbhigh_dma); - DPRINTK("fbi->dmadesc_palette_dma = 0x%x\n", fbi->dmadesc_palette_dma); - - DPRINTK("fbi->dmadesc_fblow_cpu->fdadr = 0x%x\n", fbi->dmadesc_fblow_cpu->fdadr); - DPRINTK("fbi->dmadesc_fbhigh_cpu->fdadr = 0x%x\n", fbi->dmadesc_fbhigh_cpu->fdadr); - DPRINTK("fbi->dmadesc_palette_cpu->fdadr = 0x%x\n", fbi->dmadesc_palette_cpu->fdadr); - - DPRINTK("fbi->dmadesc_fblow_cpu->fsadr = 0x%x\n", fbi->dmadesc_fblow_cpu->fsadr); - DPRINTK("fbi->dmadesc_fbhigh_cpu->fsadr = 0x%x\n", fbi->dmadesc_fbhigh_cpu->fsadr); - DPRINTK("fbi->dmadesc_palette_cpu->fsadr = 0x%x\n", fbi->dmadesc_palette_cpu->fsadr); - - DPRINTK("fbi->dmadesc_fblow_cpu->ldcmd = 0x%x\n", fbi->dmadesc_fblow_cpu->ldcmd); - DPRINTK("fbi->dmadesc_fbhigh_cpu->ldcmd = 0x%x\n", fbi->dmadesc_fbhigh_cpu->ldcmd); - DPRINTK("fbi->dmadesc_palette_cpu->ldcmd = 0x%x\n", fbi->dmadesc_palette_cpu->ldcmd); + pr_debug("fbi->dmadesc_fblow_cpu = 0x%p\n", fbi->dmadesc_fblow_cpu); + pr_debug("fbi->dmadesc_fbhigh_cpu = 0x%p\n", fbi->dmadesc_fbhigh_cpu); + pr_debug("fbi->dmadesc_palette_cpu = 0x%p\n", fbi->dmadesc_palette_cpu); + pr_debug("fbi->dmadesc_fblow_dma = 0x%x\n", fbi->dmadesc_fblow_dma); + pr_debug("fbi->dmadesc_fbhigh_dma = 0x%x\n", fbi->dmadesc_fbhigh_dma); + pr_debug("fbi->dmadesc_palette_dma = 0x%x\n", fbi->dmadesc_palette_dma); + + pr_debug("fbi->dmadesc_fblow_cpu->fdadr = 0x%x\n", fbi->dmadesc_fblow_cpu->fdadr); + pr_debug("fbi->dmadesc_fbhigh_cpu->fdadr = 0x%x\n", fbi->dmadesc_fbhigh_cpu->fdadr); + pr_debug("fbi->dmadesc_palette_cpu->fdadr = 0x%x\n", fbi->dmadesc_palette_cpu->fdadr); + + pr_debug("fbi->dmadesc_fblow_cpu->fsadr = 0x%x\n", fbi->dmadesc_fblow_cpu->fsadr); + pr_debug("fbi->dmadesc_fbhigh_cpu->fsadr = 0x%x\n", fbi->dmadesc_fbhigh_cpu->fsadr); + pr_debug("fbi->dmadesc_palette_cpu->fsadr = 0x%x\n", fbi->dmadesc_palette_cpu->fsadr); + + pr_debug("fbi->dmadesc_fblow_cpu->ldcmd = 0x%x\n", fbi->dmadesc_fblow_cpu->ldcmd); + pr_debug("fbi->dmadesc_fbhigh_cpu->ldcmd = 0x%x\n", fbi->dmadesc_fbhigh_cpu->ldcmd); + pr_debug("fbi->dmadesc_palette_cpu->ldcmd = 0x%x\n", fbi->dmadesc_palette_cpu->ldcmd); #endif fbi->reg_lccr0 = new_regs.lccr0; fbi->reg_lccr1 = new_regs.lccr1; fbi->reg_lccr2 = new_regs.lccr2; fbi->reg_lccr3 = new_regs.lccr3; + set_hsync_time(fbi, pcd); local_irq_restore(flags); /* @@ -653,7 +684,7 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info * */ static inline void __pxafb_backlight_power(struct pxafb_info *fbi, int on) { - DPRINTK("backlight o%s\n", on ? "n" : "ff"); + pr_debug("pxafb: backlight o%s\n", on ? "n" : "ff"); if (pxafb_backlight_power) pxafb_backlight_power(on); @@ -661,7 +692,7 @@ static inline void __pxafb_backlight_power(struct pxafb_info *fbi, int on) static inline void __pxafb_lcd_power(struct pxafb_info *fbi, int on) { - DPRINTK("LCD power o%s\n", on ? "n" : "ff"); + pr_debug("pxafb: LCD power o%s\n", on ? "n" : "ff"); if (pxafb_lcd_power) pxafb_lcd_power(on); @@ -709,13 +740,16 @@ static void pxafb_setup_gpio(struct pxafb_info *fbi) static void pxafb_enable_controller(struct pxafb_info *fbi) { - DPRINTK("Enabling LCD controller\n"); - DPRINTK("fdadr0 0x%08x\n", (unsigned int) fbi->fdadr0); - DPRINTK("fdadr1 0x%08x\n", (unsigned int) fbi->fdadr1); - DPRINTK("reg_lccr0 0x%08x\n", (unsigned int) fbi->reg_lccr0); - DPRINTK("reg_lccr1 0x%08x\n", (unsigned int) fbi->reg_lccr1); - DPRINTK("reg_lccr2 0x%08x\n", (unsigned int) fbi->reg_lccr2); - DPRINTK("reg_lccr3 0x%08x\n", (unsigned int) fbi->reg_lccr3); + pr_debug("pxafb: Enabling LCD controller\n"); + pr_debug("fdadr0 0x%08x\n", (unsigned int) fbi->fdadr0); + pr_debug("fdadr1 0x%08x\n", (unsigned int) fbi->fdadr1); + pr_debug("reg_lccr0 0x%08x\n", (unsigned int) fbi->reg_lccr0); + pr_debug("reg_lccr1 0x%08x\n", (unsigned int) fbi->reg_lccr1); + pr_debug("reg_lccr2 0x%08x\n", (unsigned int) fbi->reg_lccr2); + pr_debug("reg_lccr3 0x%08x\n", (unsigned int) fbi->reg_lccr3); + + /* enable LCD controller clock */ + pxa_set_cken(CKEN16_LCD, 1); /* Sequence from 11.7.10 */ LCCR3 = fbi->reg_lccr3; @@ -727,19 +761,19 @@ static void pxafb_enable_controller(struct pxafb_info *fbi) FDADR1 = fbi->fdadr1; LCCR0 |= LCCR0_ENB; - DPRINTK("FDADR0 0x%08x\n", (unsigned int) FDADR0); - DPRINTK("FDADR1 0x%08x\n", (unsigned int) FDADR1); - DPRINTK("LCCR0 0x%08x\n", (unsigned int) LCCR0); - DPRINTK("LCCR1 0x%08x\n", (unsigned int) LCCR1); - DPRINTK("LCCR2 0x%08x\n", (unsigned int) LCCR2); - DPRINTK("LCCR3 0x%08x\n", (unsigned int) LCCR3); + pr_debug("FDADR0 0x%08x\n", (unsigned int) FDADR0); + pr_debug("FDADR1 0x%08x\n", (unsigned int) FDADR1); + pr_debug("LCCR0 0x%08x\n", (unsigned int) LCCR0); + pr_debug("LCCR1 0x%08x\n", (unsigned int) LCCR1); + pr_debug("LCCR2 0x%08x\n", (unsigned int) LCCR2); + pr_debug("LCCR3 0x%08x\n", (unsigned int) LCCR3); } static void pxafb_disable_controller(struct pxafb_info *fbi) { DECLARE_WAITQUEUE(wait, current); - DPRINTK("Disabling LCD controller\n"); + pr_debug("pxafb: disabling LCD controller\n"); set_current_state(TASK_UNINTERRUPTIBLE); add_wait_queue(&fbi->ctrlr_wait, &wait); @@ -750,6 +784,9 @@ static void pxafb_disable_controller(struct pxafb_info *fbi) schedule_timeout(20 * HZ / 1000); remove_wait_queue(&fbi->ctrlr_wait, &wait); + + /* disable LCD controller clock */ + pxa_set_cken(CKEN16_LCD, 0); } /* @@ -901,6 +938,7 @@ pxafb_freq_transition(struct notifier_block *nb, unsigned long val, void *data) case CPUFREQ_POSTCHANGE: pcd = get_pcd(fbi->fb.var.pixclock); + set_hsync_time(fbi, pcd); fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | LCCR3_PixClkDiv(pcd); set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE); break; @@ -943,21 +981,19 @@ pxafb_freq_policy(struct notifier_block *nb, unsigned long val, void *data) * Power management hooks. Note that we won't be called from IRQ context, * unlike the blank functions above, so we may sleep. */ -static int pxafb_suspend(struct device *dev, pm_message_t state, u32 level) +static int pxafb_suspend(struct device *dev, pm_message_t state) { struct pxafb_info *fbi = dev_get_drvdata(dev); - if (level == SUSPEND_DISABLE || level == SUSPEND_POWER_DOWN) - set_ctrlr_state(fbi, C_DISABLE_PM); + set_ctrlr_state(fbi, C_DISABLE_PM); return 0; } -static int pxafb_resume(struct device *dev, u32 level) +static int pxafb_resume(struct device *dev) { struct pxafb_info *fbi = dev_get_drvdata(dev); - if (level == RESUME_ENABLE) - set_ctrlr_state(fbi, C_ENABLE_PM); + set_ctrlr_state(fbi, C_ENABLE_PM); return 0; } #else @@ -1001,7 +1037,7 @@ static int __init pxafb_map_video_memory(struct pxafb_info *fbi) fbi->palette_size = fbi->fb.var.bits_per_pixel == 8 ? 256 : 16; palette_mem_size = fbi->palette_size * sizeof(u16); - DPRINTK("palette_mem_size = 0x%08lx\n", (u_long) palette_mem_size); + pr_debug("pxafb: palette_mem_size = 0x%08lx\n", palette_mem_size); fbi->palette_cpu = (u16 *)(fbi->map_cpu + PAGE_SIZE - palette_mem_size); fbi->palette_dma = fbi->map_dma + PAGE_SIZE - palette_mem_size; @@ -1299,8 +1335,6 @@ int __init pxafb_probe(struct device *dev) ret = -ENOMEM; goto failed; } - /* enable LCD controller clock */ - pxa_set_cken(CKEN16_LCD, 1); ret = request_irq(IRQ_LCD, pxafb_handle_irq, SA_INTERRUPT, "LCD", fbi); if (ret) { |