diff options
Diffstat (limited to 'drivers/video/pxafb.c')
| -rw-r--r-- | drivers/video/pxafb.c | 1519 |
1 files changed, 0 insertions, 1519 deletions
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c deleted file mode 100644 index 97facb121c7..00000000000 --- a/drivers/video/pxafb.c +++ /dev/null @@ -1,1519 +0,0 @@ -/* - * linux/drivers/video/pxafb.c - * - * Copyright (C) 1999 Eric A. Thomas. - * Copyright (C) 2004 Jean-Frederic Clere. - * Copyright (C) 2004 Ian Campbell. - * Copyright (C) 2004 Jeff Lackey. - * Based on sa1100fb.c Copyright (C) 1999 Eric A. Thomas - * which in turn is - * Based on acornfb.c Copyright (C) Russell King. - * - * 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. - * - * Intel PXA250/210 LCD Controller Frame Buffer Driver - * - * Please direct your questions and comments on this driver to the following - * email address: - * - * linux-arm-kernel@lists.arm.linux.org.uk - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/interrupt.h> -#include <linux/slab.h> -#include <linux/fb.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/ioport.h> -#include <linux/cpufreq.h> -#include <linux/platform_device.h> -#include <linux/dma-mapping.h> -#include <linux/clk.h> -#include <linux/err.h> - -#include <asm/hardware.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/div64.h> -#include <asm/arch/pxa-regs.h> -#include <asm/arch/bitfield.h> -#include <asm/arch/pxafb.h> - -/* - * Complain if VAR is out of range. - */ -#define DEBUG_VAR 1 - -#include "pxafb.h" - -/* Bits which should not be set in machine configuration structures */ -#define LCCR0_INVALID_CONFIG_MASK (LCCR0_OUM|LCCR0_BM|LCCR0_QDM|LCCR0_DIS|LCCR0_EFM|LCCR0_IUM|LCCR0_SFM|LCCR0_LDM|LCCR0_ENB) -#define LCCR3_INVALID_CONFIG_MASK (LCCR3_HSP|LCCR3_VSP|LCCR3_PCD|LCCR3_BPP) - -static void (*pxafb_backlight_power)(int); -static void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *); - -static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *); -static void set_ctrlr_state(struct pxafb_info *fbi, u_int state); - -#ifdef CONFIG_FB_PXA_PARAMETERS -#define PXAFB_OPTIONS_SIZE 256 -static char g_options[PXAFB_OPTIONS_SIZE] __devinitdata = ""; -#endif - -static inline void pxafb_schedule_work(struct pxafb_info *fbi, u_int state) -{ - unsigned long flags; - - local_irq_save(flags); - /* - * We need to handle two requests being made at the same time. - * There are two important cases: - * 1. When we are changing VT (C_REENABLE) while unblanking (C_ENABLE) - * We must perform the unblanking, which will do our REENABLE for us. - * 2. When we are blanking, but immediately unblank before we have - * blanked. We do the "REENABLE" thing here as well, just to be sure. - */ - if (fbi->task_state == C_ENABLE && state == C_REENABLE) - state = (u_int) -1; - if (fbi->task_state == C_DISABLE && state == C_ENABLE) - state = C_REENABLE; - - if (state != (u_int)-1) { - fbi->task_state = state; - schedule_work(&fbi->task); - } - local_irq_restore(flags); -} - -static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) -{ - chan &= 0xffff; - chan >>= 16 - bf->length; - return chan << bf->offset; -} - -static int -pxafb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue, - u_int trans, struct fb_info *info) -{ - struct pxafb_info *fbi = (struct pxafb_info *)info; - u_int val; - - if (regno >= fbi->palette_size) - return 1; - - if (fbi->fb.var.grayscale) { - fbi->palette_cpu[regno] = ((blue >> 8) & 0x00ff); - return 0; - } - - switch (fbi->lccr4 & LCCR4_PAL_FOR_MASK) { - case LCCR4_PAL_FOR_0: - val = ((red >> 0) & 0xf800); - val |= ((green >> 5) & 0x07e0); - val |= ((blue >> 11) & 0x001f); - fbi->palette_cpu[regno] = val; - break; - case LCCR4_PAL_FOR_1: - val = ((red << 8) & 0x00f80000); - val |= ((green >> 0) & 0x0000fc00); - val |= ((blue >> 8) & 0x000000f8); - ((u32*)(fbi->palette_cpu))[regno] = val; - break; - case LCCR4_PAL_FOR_2: - val = ((red << 8) & 0x00fc0000); - val |= ((green >> 0) & 0x0000fc00); - val |= ((blue >> 8) & 0x000000fc); - ((u32*)(fbi->palette_cpu))[regno] = val; - break; - } - - return 0; -} - -static int -pxafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, - u_int trans, struct fb_info *info) -{ - struct pxafb_info *fbi = (struct pxafb_info *)info; - unsigned int val; - int ret = 1; - - /* - * If inverse mode was selected, invert all the colours - * rather than the register number. The register number - * is what you poke into the framebuffer to produce the - * colour you requested. - */ - if (fbi->cmap_inverse) { - red = 0xffff - red; - green = 0xffff - green; - blue = 0xffff - blue; - } - - /* - * If greyscale is true, then we convert the RGB value - * to greyscale no matter what visual we are using. - */ - if (fbi->fb.var.grayscale) - red = green = blue = (19595 * red + 38470 * green + - 7471 * blue) >> 16; - - switch (fbi->fb.fix.visual) { - case FB_VISUAL_TRUECOLOR: - /* - * 16-bit True Colour. We encode the RGB value - * according to the RGB bitfield information. - */ - 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; - ret = 0; - } - break; - - case FB_VISUAL_STATIC_PSEUDOCOLOR: - case FB_VISUAL_PSEUDOCOLOR: - ret = pxafb_setpalettereg(regno, red, green, blue, trans, info); - break; - } - - return ret; -} - -/* - * pxafb_bpp_to_lccr3(): - * Convert a bits per pixel value to the correct bit pattern for LCCR3 - */ -static int pxafb_bpp_to_lccr3(struct fb_var_screeninfo *var) -{ - int ret = 0; - switch (var->bits_per_pixel) { - case 1: ret = LCCR3_1BPP; break; - case 2: ret = LCCR3_2BPP; break; - case 4: ret = LCCR3_4BPP; break; - case 8: ret = LCCR3_8BPP; break; - case 16: ret = LCCR3_16BPP; break; - } - return ret; -} - -#ifdef CONFIG_CPU_FREQ -/* - * pxafb_display_dma_period() - * Calculate the minimum period (in picoseconds) between two DMA - * requests for the LCD controller. If we hit this, it means we're - * doing nothing but LCD DMA. - */ -static unsigned int pxafb_display_dma_period(struct fb_var_screeninfo *var) -{ - /* - * Period = pixclock * bits_per_byte * bytes_per_transfer - * / memory_bits_per_pixel; - */ - return var->pixclock * 8 * 16 / var->bits_per_pixel; -} - -extern unsigned int get_clk_frequency_khz(int info); -#endif - -/* - * Select the smallest mode that allows the desired resolution to be - * displayed. If desired parameters can be rounded up. - */ -static struct pxafb_mode_info *pxafb_getmode(struct pxafb_mach_info *mach, struct fb_var_screeninfo *var) -{ - struct pxafb_mode_info *mode = NULL; - struct pxafb_mode_info *modelist = mach->modes; - unsigned int best_x = 0xffffffff, best_y = 0xffffffff; - unsigned int i; - - for (i = 0 ; i < mach->num_modes ; i++) { - if (modelist[i].xres >= var->xres && modelist[i].yres >= var->yres && - modelist[i].xres < best_x && modelist[i].yres < best_y && - modelist[i].bpp >= var->bits_per_pixel ) { - best_x = modelist[i].xres; - best_y = modelist[i].yres; - mode = &modelist[i]; - } - } - - return mode; -} - -static void pxafb_setmode(struct fb_var_screeninfo *var, struct pxafb_mode_info *mode) -{ - var->xres = mode->xres; - var->yres = mode->yres; - var->bits_per_pixel = mode->bpp; - var->pixclock = mode->pixclock; - var->hsync_len = mode->hsync_len; - var->left_margin = mode->left_margin; - var->right_margin = mode->right_margin; - var->vsync_len = mode->vsync_len; - var->upper_margin = mode->upper_margin; - var->lower_margin = mode->lower_margin; - var->sync = mode->sync; - var->grayscale = mode->cmap_greyscale; - var->xres_virtual = var->xres; - var->yres_virtual = var->yres; -} - -/* - * pxafb_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. - * - * Round up in the following order: bits_per_pixel, xres, - * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, - * bitfields, horizontal timing, vertical timing. - */ -static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) -{ - struct pxafb_info *fbi = (struct pxafb_info *)info; - struct pxafb_mach_info *inf = fbi->dev->platform_data; - - if (var->xres < MIN_XRES) - var->xres = MIN_XRES; - if (var->yres < MIN_YRES) - var->yres = MIN_YRES; - - if (inf->fixed_modes) { - struct pxafb_mode_info *mode; - - mode = pxafb_getmode(inf, var); - if (!mode) - return -EINVAL; - pxafb_setmode(var, mode); - } else { - if (var->xres > inf->modes->xres) - return -EINVAL; - if (var->yres > inf->modes->yres) - return -EINVAL; - if (var->bits_per_pixel > inf->modes->bpp) - return -EINVAL; - } - - var->xres_virtual = - max(var->xres_virtual, var->xres); - var->yres_virtual = - max(var->yres_virtual, var->yres); - - /* - * Setup the RGB parameters for this display. - * - * The pixel packing format is described on page 7-11 of the - * PXA2XX Developer's Manual. - */ - if (var->bits_per_pixel == 16) { - var->red.offset = 11; var->red.length = 5; - var->green.offset = 5; var->green.length = 6; - var->blue.offset = 0; var->blue.length = 5; - var->transp.offset = var->transp.length = 0; - } else { - var->red.offset = var->green.offset = var->blue.offset = var->transp.offset = 0; - var->red.length = 8; - var->green.length = 8; - var->blue.length = 8; - var->transp.length = 0; - } - -#ifdef CONFIG_CPU_FREQ - pr_debug("pxafb: dma period = %d ps, clock = %d kHz\n", - pxafb_display_dma_period(var), - get_clk_frequency_khz(0)); -#endif - - return 0; -} - -static inline void pxafb_set_truecolor(u_int is_true_color) -{ - pr_debug("pxafb: true_color = %d\n", is_true_color); - // do your machine-specific setup if needed -} - -/* - * pxafb_set_par(): - * Set the user defined part of the display for the specified console - */ -static int pxafb_set_par(struct fb_info *info) -{ - struct pxafb_info *fbi = (struct pxafb_info *)info; - struct fb_var_screeninfo *var = &info->var; - unsigned long palette_mem_size; - - pr_debug("pxafb: set_par\n"); - - if (var->bits_per_pixel == 16) - fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR; - else if (!fbi->cmap_static) - fbi->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR; - else { - /* - * Some people have weird ideas about wanting static - * pseudocolor maps. I suspect their user space - * applications are broken. - */ - fbi->fb.fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR; - } - - fbi->fb.fix.line_length = var->xres_virtual * - var->bits_per_pixel / 8; - if (var->bits_per_pixel == 16) - fbi->palette_size = 0; - else - fbi->palette_size = var->bits_per_pixel == 1 ? 4 : 1 << var->bits_per_pixel; - - if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) - palette_mem_size = fbi->palette_size * sizeof(u16); - else - palette_mem_size = fbi->palette_size * sizeof(u32); - - 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; - - /* - * Set (any) board control register to handle new color depth - */ - pxafb_set_truecolor(fbi->fb.fix.visual == FB_VISUAL_TRUECOLOR); - - if (fbi->fb.var.bits_per_pixel == 16) - fb_dealloc_cmap(&fbi->fb.cmap); - else - fb_alloc_cmap(&fbi->fb.cmap, 1<<fbi->fb.var.bits_per_pixel, 0); - - pxafb_activate_var(var, fbi); - - return 0; -} - -/* - * Formal definition of the VESA spec: - * On - * This refers to the state of the display when it is in full operation - * Stand-By - * This defines an optional operating state of minimal power reduction with - * the shortest recovery time - * Suspend - * This refers to a level of power management in which substantial power - * reduction is achieved by the display. The display can have a longer - * recovery time from this state than from the Stand-by state - * Off - * This indicates that the display is consuming the lowest level of power - * and is non-operational. Recovery from this state may optionally require - * the user to manually power on the monitor - * - * Now, the fbdev driver adds an additional state, (blank), where they - * turn off the video (maybe by colormap tricks), but don't mess with the - * video itself: think of it semantically between on and Stand-By. - * - * So here's what we should do in our fbdev blank routine: - * - * VESA_NO_BLANKING (mode 0) Video on, front/back light on - * VESA_VSYNC_SUSPEND (mode 1) Video on, front/back light off - * VESA_HSYNC_SUSPEND (mode 2) Video on, front/back light off - * VESA_POWERDOWN (mode 3) Video off, front/back light off - * - * This will match the matrox implementation. - */ - -/* - * pxafb_blank(): - * Blank the display by setting all palette values to zero. Note, the - * 16 bpp mode does not really use the palette, so this will not - * blank the display in all modes. - */ -static int pxafb_blank(int blank, struct fb_info *info) -{ - struct pxafb_info *fbi = (struct pxafb_info *)info; - int i; - - pr_debug("pxafb: blank=%d\n", blank); - - switch (blank) { - case FB_BLANK_POWERDOWN: - case FB_BLANK_VSYNC_SUSPEND: - case FB_BLANK_HSYNC_SUSPEND: - case FB_BLANK_NORMAL: - if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR || - fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR) - for (i = 0; i < fbi->palette_size; i++) - pxafb_setpalettereg(i, 0, 0, 0, 0, info); - - pxafb_schedule_work(fbi, C_DISABLE); - //TODO if (pxafb_blank_helper) pxafb_blank_helper(blank); - break; - - case FB_BLANK_UNBLANK: - //TODO if (pxafb_blank_helper) pxafb_blank_helper(blank); - if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR || - fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR) - fb_set_cmap(&fbi->fb.cmap, info); - pxafb_schedule_work(fbi, C_ENABLE); - } - return 0; -} - -static int pxafb_mmap(struct fb_info *info, - struct vm_area_struct *vma) -{ - struct pxafb_info *fbi = (struct pxafb_info *)info; - unsigned long off = vma->vm_pgoff << PAGE_SHIFT; - - if (off < info->fix.smem_len) { - vma->vm_pgoff += 1; - return dma_mmap_writecombine(fbi->dev, vma, fbi->map_cpu, - fbi->map_dma, fbi->map_size); - } - return -EINVAL; -} - -static struct fb_ops pxafb_ops = { - .owner = THIS_MODULE, - .fb_check_var = pxafb_check_var, - .fb_set_par = pxafb_set_par, - .fb_setcolreg = pxafb_setcolreg, - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, - .fb_blank = pxafb_blank, - .fb_mmap = pxafb_mmap, -}; - -/* - * Calculate the PCD value from the clock rate (in picoseconds). - * We take account of the PPCR clock setting. - * From PXA Developer's Manual: - * - * PixelClock = LCLK - * ------------- - * 2 ( PCD + 1 ) - * - * PCD = LCLK - * ------------- - 1 - * 2(PixelClock) - * - * Where: - * LCLK = LCD/Memory Clock - * PCD = LCCR3[7:0] - * - * PixelClock here is in Hz while the pixclock argument given is the - * period in picoseconds. Hence PixelClock = 1 / ( pixclock * 10^-12 ) - * - * The function get_lclk_frequency_10khz returns LCLK in units of - * 10khz. Calling the result of this function lclk gives us the - * following - * - * PCD = (lclk * 10^4 ) * ( pixclock * 10^-12 ) - * -------------------------------------- - 1 - * 2 - * - * Factoring the 10^4 and 10^-12 out gives 10^-8 == 1 / 100000000 as used below. - */ -static inline unsigned int get_pcd(struct pxafb_info *fbi, unsigned int pixclock) -{ - unsigned long long pcd; - - /* FIXME: Need to take into account Double Pixel Clock mode - * (DPC) bit? or perhaps set it based on the various clock - * speeds */ - pcd = (unsigned long long)(clk_get_rate(fbi->clk) / 10000); - pcd *= pixclock; - do_div(pcd, 100000000 * 2); - /* no need for this, since we should subtract 1 anyway. they cancel */ - /* pcd += 1; */ /* make up for integer math truncations */ - return (unsigned int)pcd; -} - -/* - * Some touchscreens need hsync information from the video driver to - * function correctly. We export it here. Note that 'hsync_time' and - * the value returned from pxafb_get_hsync_time() is the *reciprocal* - * of the hsync period in seconds. - */ -static inline void set_hsync_time(struct pxafb_info *fbi, unsigned int pcd) -{ - unsigned long htime; - - if ((pcd == 0) || (fbi->fb.var.hsync_len == 0)) { - fbi->hsync_time=0; - return; - } - - htime = clk_get_rate(fbi->clk) / (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. - */ -static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *fbi) -{ - struct pxafb_lcd_reg new_regs; - u_long flags; - u_int lines_per_panel, pcd = get_pcd(fbi, var->pixclock); - - pr_debug("pxafb: Configuring PXA LCD\n"); - - 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) - printk(KERN_ERR "%s: invalid xres %d\n", - fbi->fb.fix.id, var->xres); - switch(var->bits_per_pixel) { - case 1: - case 2: - case 4: - case 8: - case 16: - break; - default: - printk(KERN_ERR "%s: invalid bit depth %d\n", - fbi->fb.fix.id, var->bits_per_pixel); - break; - } - if (var->hsync_len < 1 || var->hsync_len > 64) - printk(KERN_ERR "%s: invalid hsync_len %d\n", - fbi->fb.fix.id, var->hsync_len); - if (var->left_margin < 1 || var->left_margin > 255) - printk(KERN_ERR "%s: invalid left_margin %d\n", - fbi->fb.fix.id, var->left_margin); - if (var->right_margin < 1 || var->right_margin > 255) - printk(KERN_ERR "%s: invalid right_margin %d\n", - fbi->fb.fix.id, var->right_margin); - if (var->yres < 1 || var->yres > 1024) - printk(KERN_ERR "%s: invalid yres %d\n", - fbi->fb.fix.id, var->yres); - if (var->vsync_len < 1 || var->vsync_len > 64) - printk(KERN_ERR "%s: invalid vsync_len %d\n", - fbi->fb.fix.id, var->vsync_len); - if (var->upper_margin < 0 || var->upper_margin > 255) - printk(KERN_ERR "%s: invalid upper_margin %d\n", - fbi->fb.fix.id, var->upper_margin); - if (var->lower_margin < 0 || var->lower_margin > 255) - printk(KERN_ERR "%s: invalid lower_margin %d\n", - fbi->fb.fix.id, var->lower_margin); -#endif - - new_regs.lccr0 = fbi->lccr0 | - (LCCR0_LDM | LCCR0_SFM | LCCR0_IUM | LCCR0_EFM | - LCCR0_QDM | LCCR0_BM | LCCR0_OUM); - - new_regs.lccr1 = - LCCR1_DisWdth(var->xres) + - LCCR1_HorSnchWdth(var->hsync_len) + - LCCR1_BegLnDel(var->left_margin) + - LCCR1_EndLnDel(var->right_margin); - - /* - * If we have a dual scan LCD, we need to halve - * the YRES parameter. - */ - lines_per_panel = var->yres; - if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) - lines_per_panel /= 2; - - new_regs.lccr2 = - LCCR2_DisHght(lines_per_panel) + - LCCR2_VrtSnchWdth(var->vsync_len) + - LCCR2_BegFrmDel(var->upper_margin) + - LCCR2_EndFrmDel(var->lower_margin); - - new_regs.lccr3 = fbi->lccr3 | - pxafb_bpp_to_lccr3(var) | - (var->sync & FB_SYNC_HOR_HIGH_ACT ? LCCR3_HorSnchH : LCCR3_HorSnchL) | - (var->sync & FB_SYNC_VERT_HIGH_ACT ? LCCR3_VrtSnchH : LCCR3_VrtSnchL); - - if (pcd) - new_regs.lccr3 |= LCCR3_PixClkDiv(pcd); - - 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); - - /* setup dma descriptors */ - fbi->dmadesc_fblow_cpu = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette_cpu - 3*16); - fbi->dmadesc_fbhigh_cpu = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette_cpu - 2*16); - fbi->dmadesc_palette_cpu = (struct pxafb_dma_descriptor *)((unsigned int)fbi->palette_cpu - 1*16); - - fbi->dmadesc_fblow_dma = fbi->palette_dma - 3*16; - fbi->dmadesc_fbhigh_dma = fbi->palette_dma - 2*16; - fbi->dmadesc_palette_dma = fbi->palette_dma - 1*16; - -#define BYTES_PER_PANEL (lines_per_panel * fbi->fb.fix.line_length) - - /* populate descriptors */ - fbi->dmadesc_fblow_cpu->fdadr = fbi->dmadesc_fblow_dma; - fbi->dmadesc_fblow_cpu->fsadr = fbi->screen_dma + BYTES_PER_PANEL; - fbi->dmadesc_fblow_cpu->fidr = 0; - fbi->dmadesc_fblow_cpu->ldcmd = BYTES_PER_PANEL; - - fbi->fdadr1 = fbi->dmadesc_fblow_dma; /* only used in dual-panel mode */ - - fbi->dmadesc_fbhigh_cpu->fsadr = fbi->screen_dma; - fbi->dmadesc_fbhigh_cpu->fidr = 0; - fbi->dmadesc_fbhigh_cpu->ldcmd = BYTES_PER_PANEL; - - fbi->dmadesc_palette_cpu->fsadr = fbi->palette_dma; - fbi->dmadesc_palette_cpu->fidr = 0; - if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) - fbi->dmadesc_palette_cpu->ldcmd = fbi->palette_size * - sizeof(u16); - else - fbi->dmadesc_palette_cpu->ldcmd = fbi->palette_size * - sizeof(u32); - fbi->dmadesc_palette_cpu->ldcmd |= LDCMD_PAL; - - if (var->bits_per_pixel == 16) { - /* palette shouldn't be loaded in true-color mode */ - fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_fbhigh_dma; - fbi->fdadr0 = fbi->dmadesc_fbhigh_dma; /* no pal just fbhigh */ - /* init it to something, even though we won't be using it */ - fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_palette_dma; - } else { - fbi->dmadesc_palette_cpu->fdadr = fbi->dmadesc_fbhigh_dma; - fbi->dmadesc_fbhigh_cpu->fdadr = fbi->dmadesc_palette_dma; - fbi->fdadr0 = fbi->dmadesc_palette_dma; /* flips back and forth between pal and fbhigh */ - } - -#if 0 - 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; - fbi->reg_lccr4 = LCCR4 & (~LCCR4_PAL_FOR_MASK); - fbi->reg_lccr4 |= (fbi->lccr4 & LCCR4_PAL_FOR_MASK); - set_hsync_time(fbi, pcd); - local_irq_restore(flags); - - /* - * Only update the registers if the controller is enabled - * and something has changed. - */ - if ((LCCR0 != fbi->reg_lccr0) || (LCCR1 != fbi->reg_lccr1) || - (LCCR2 != fbi->reg_lccr2) || (LCCR3 != fbi->reg_lccr3) || - (FDADR0 != fbi->fdadr0) || (FDADR1 != fbi->fdadr1)) - pxafb_schedule_work(fbi, C_REENABLE); - - return 0; -} - -/* - * NOTE! The following functions are purely helpers for set_ctrlr_state. - * Do not call them directly; set_ctrlr_state does the correct serialisation - * to ensure that things happen in the right way 100% of time time. - * -- rmk - */ -static inline void __pxafb_backlight_power(struct pxafb_info *fbi, int on) -{ - pr_debug("pxafb: backlight o%s\n", on ? "n" : "ff"); - - if (pxafb_backlight_power) - pxafb_backlight_power(on); -} - -static inline void __pxafb_lcd_power(struct pxafb_info *fbi, int on) -{ - pr_debug("pxafb: LCD power o%s\n", on ? "n" : "ff"); - - if (pxafb_lcd_power) - pxafb_lcd_power(on, &fbi->fb.var); -} - -static void pxafb_setup_gpio(struct pxafb_info *fbi) -{ - int gpio, ldd_bits; - unsigned int lccr0 = fbi->lccr0; - - /* - * setup is based on type of panel supported - */ - - /* 4 bit interface */ - if ((lccr0 & LCCR0_CMS) == LCCR0_Mono && - (lccr0 & LCCR0_SDS) == LCCR0_Sngl && - (lccr0 & LCCR0_DPD) == LCCR0_4PixMono) - ldd_bits = 4; - - /* 8 bit interface */ - else if (((lccr0 & LCCR0_CMS) == LCCR0_Mono && - ((lccr0 & LCCR0_SDS) == LCCR0_Dual || (lccr0 & LCCR0_DPD) == LCCR0_8PixMono)) || - ((lccr0 & LCCR0_CMS) == LCCR0_Color && - (lccr0 & LCCR0_PAS) == LCCR0_Pas && (lccr0 & LCCR0_SDS) == LCCR0_Sngl)) - ldd_bits = 8; - - /* 16 bit interface */ - else if ((lccr0 & LCCR0_CMS) == LCCR0_Color && - ((lccr0 & LCCR0_SDS) == LCCR0_Dual || (lccr0 & LCCR0_PAS) == LCCR0_Act)) - ldd_bits = 16; - - else { - printk(KERN_ERR "pxafb_setup_gpio: unable to determine bits per pixel\n"); - return; - } - - for (gpio = 58; ldd_bits; gpio++, ldd_bits--) - pxa_gpio_mode(gpio | GPIO_ALT_FN_2_OUT); - pxa_gpio_mode(GPIO74_LCD_FCLK_MD); - pxa_gpio_mode(GPIO75_LCD_LCLK_MD); - pxa_gpio_mode(GPIO76_LCD_PCLK_MD); - pxa_gpio_mode(GPIO77_LCD_ACBIAS_MD); -} - -static void pxafb_enable_controller(struct pxafb_info *fbi) -{ - 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 */ - clk_enable(fbi->clk); - - /* Sequence from 11.7.10 */ - LCCR3 = fbi->reg_lccr3; - LCCR2 = fbi->reg_lccr2; - LCCR1 = fbi->reg_lccr1; - LCCR0 = fbi->reg_lccr0 & ~LCCR0_ENB; - - FDADR0 = fbi->fdadr0; - FDADR1 = fbi->fdadr1; - LCCR0 |= LCCR0_ENB; - - 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); - pr_debug("LCCR4 0x%08x\n", (unsigned int) LCCR4); -} - -static void pxafb_disable_controller(struct pxafb_info *fbi) -{ - DECLARE_WAITQUEUE(wait, current); - - pr_debug("pxafb: disabling LCD controller\n"); - - set_current_state(TASK_UNINTERRUPTIBLE); - add_wait_queue(&fbi->ctrlr_wait, &wait); - - LCSR = 0xffffffff; /* Clear LCD Status Register */ - LCCR0 &= ~LCCR0_LDM; /* Enable LCD Disable Done Interrupt */ - LCCR0 |= LCCR0_DIS; /* Disable LCD Controller */ - - schedule_timeout(200 * HZ / 1000); - remove_wait_queue(&fbi->ctrlr_wait, &wait); - - /* disable LCD controller clock */ - clk_disable(fbi->clk); -} - -/* - * pxafb_handle_irq: Handle 'LCD DONE' interrupts. - */ -static irqreturn_t pxafb_handle_irq(int irq, void *dev_id) -{ - struct pxafb_info *fbi = dev_id; - unsigned int lcsr = LCSR; - - if (lcsr & LCSR_LDD) { - LCCR0 |= LCCR0_LDM; - wake_up(&fbi->ctrlr_wait); - } - - LCSR = lcsr; - return IRQ_HANDLED; -} - -/* - * This function must be called from task context only, since it will - * sleep when disabling the LCD controller, or if we get two contending - * processes trying to alter state. - */ -static void set_ctrlr_state(struct pxafb_info *fbi, u_int state) -{ - u_int old_state; - - down(&fbi->ctrlr_sem); - - old_state = fbi->state; - - /* - * Hack around fbcon initialisation. - */ - if (old_state == C_STARTUP && state == C_REENABLE) - state = C_ENABLE; - - switch (state) { - case C_DISABLE_CLKCHANGE: - /* - * Disable controller for clock change. If the - * controller is already disabled, then do nothing. - */ - if (old_state != C_DISABLE && old_state != C_DISABLE_PM) { - fbi->state = state; - //TODO __pxafb_lcd_power(fbi, 0); - pxafb_disable_controller(fbi); - } - break; - - case C_DISABLE_PM: - case C_DISABLE: - /* - * Disable controller - */ - if (old_state != C_DISABLE) { - fbi->state = state; - __pxafb_backlight_power(fbi, 0); - __pxafb_lcd_power(fbi, 0); - if (old_state != C_DISABLE_CLKCHANGE) - pxafb_disable_controller(fbi); - } - break; - - case C_ENABLE_CLKCHANGE: - /* - * Enable the controller after clock change. Only - * do this if we were disabled for the clock change. - */ - if (old_state == C_DISABLE_CLKCHANGE) { - fbi->state = C_ENABLE; - pxafb_enable_controller(fbi); - //TODO __pxafb_lcd_power(fbi, 1); - } - break; - - case C_REENABLE: - /* - * Re-enable the controller only if it was already - * enabled. This is so we reprogram the control - * registers. - */ - if (old_state == C_ENABLE) { - __pxafb_lcd_power(fbi, 0); - pxafb_disable_controller(fbi); - pxafb_setup_gpio(fbi); - pxafb_enable_controller(fbi); - __pxafb_lcd_power(fbi, 1); - } - break; - - case C_ENABLE_PM: - /* - * Re-enable the controller after PM. This is not - * perfect - think about the case where we were doing - * a clock change, and we suspended half-way through. - */ - if (old_state != C_DISABLE_PM) - break; - /* fall through */ - - case C_ENABLE: - /* - * Power up the LCD screen, enable controller, and - * turn on the backlight. - */ - if (old_state != C_ENABLE) { - fbi->state = C_ENABLE; - pxafb_setup_gpio(fbi); - pxafb_enable_controller(fbi); - __pxafb_lcd_power(fbi, 1); - __pxafb_backlight_power(fbi, 1); - } - break; - } - up(&fbi->ctrlr_sem); -} - -/* - * Our LCD controller task (which is called when we blank or unblank) - * via keventd. - */ -static void pxafb_task(struct work_struct *work) -{ - struct pxafb_info *fbi = - container_of(work, struct pxafb_info, task); - u_int state = xchg(&fbi->task_state, -1); - - set_ctrlr_state(fbi, state); -} - -#ifdef CONFIG_CPU_FREQ -/* - * CPU clock speed change handler. We need to adjust the LCD timing - * parameters when the CPU clock is adjusted by the power management - * subsystem. - * - * TODO: Determine why f->new != 10*get_lclk_frequency_10khz() - */ -static int -pxafb_freq_transition(struct notifier_block *nb, unsigned long val, void *data) -{ - struct pxafb_info *fbi = TO_INF(nb, freq_transition); - //TODO struct cpufreq_freqs *f = data; - u_int pcd; - - switch (val) { - case CPUFREQ_PRECHANGE: - set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE); - break; - - case CPUFREQ_POSTCHANGE: - pcd = get_pcd(fbi, 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; - } - return 0; -} - -static int -pxafb_freq_policy(struct notifier_block *nb, unsigned long val, void *data) -{ - struct pxafb_info *fbi = TO_INF(nb, freq_policy); - struct fb_var_screeninfo *var = &fbi->fb.var; - struct cpufreq_policy *policy = data; - - switch (val) { - case CPUFREQ_ADJUST: - case CPUFREQ_INCOMPATIBLE: - pr_debug("min dma period: %d ps, " - "new clock %d kHz\n", pxafb_display_dma_period(var), - policy->max); - // TODO: fill in min/max values - break; -#if 0 - case CPUFREQ_NOTIFY: - printk(KERN_ERR "%s: got CPUFREQ_NOTIFY\n", __FUNCTION__); - do {} while(0); - /* todo: panic if min/max values aren't fulfilled - * [can't really happen unless there's a bug in the - * CPU policy verification process * - */ - break; -#endif - } - return 0; -} -#endif - -#ifdef CONFIG_PM -/* - * 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 platform_device *dev, pm_message_t state) -{ - struct pxafb_info *fbi = platform_get_drvdata(dev); - - set_ctrlr_state(fbi, C_DISABLE_PM); - return 0; -} - -static int pxafb_resume(struct platform_device *dev) -{ - struct pxafb_info *fbi = platform_get_drvdata(dev); - - set_ctrlr_state(fbi, C_ENABLE_PM); - return 0; -} -#else -#define pxafb_suspend NULL -#define pxafb_resume NULL -#endif - -/* - * pxafb_map_video_memory(): - * Allocates the DRAM memory for the frame buffer. This buffer is - * remapped into a non-cached, non-buffered, memory region to - * allow palette and pixel writes to occur without flushing the - * cache. Once this area is remapped, all virtual memory - * access to the video memory should occur at the new region. - */ -static int __init pxafb_map_video_memory(struct pxafb_info *fbi) -{ - u_long palette_mem_size; - - /* - * We reserve one page for the palette, plus the size - * of the framebuffer. - */ - 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); - - if (fbi->map_cpu) { - /* prevent initial garbage on screen */ - memset(fbi->map_cpu, 0, fbi->map_size); - fbi->fb.screen_base = fbi->map_cpu + PAGE_SIZE; - fbi->screen_dma = fbi->map_dma + PAGE_SIZE; - /* - * FIXME: this is actually the wrong thing to place in - * smem_start. But fbdev suffers from the problem that - * it needs an API which doesn't exist (in this case, - * dma_writecombine_mmap) - */ - fbi->fb.fix.smem_start = fbi->screen_dma; - fbi->palette_size = fbi->fb.var.bits_per_pixel == 8 ? 256 : 16; - - if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) - palette_mem_size = fbi->palette_size * sizeof(u16); - else - palette_mem_size = fbi->palette_size * sizeof(u32); - - 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; - } - - return fbi->map_cpu ? 0 : -ENOMEM; -} - -static struct pxafb_info * __init pxafb_init_fbinfo(struct device *dev) -{ - struct pxafb_info *fbi; - void *addr; - struct pxafb_mach_info *inf = dev->platform_data; - struct pxafb_mode_info *mode = inf->modes; - int i, smemlen; - - /* Alloc the pxafb_info and pseudo_palette in one step */ - fbi = kmalloc(sizeof(struct pxafb_info) + sizeof(u32) * 16, GFP_KERNEL); - if (!fbi) - return NULL; - - memset(fbi, 0, sizeof(struct pxafb_info)); - fbi->dev = dev; - - fbi->clk = clk_get(dev, "LCDCLK"); - if (IS_ERR(fbi->clk)) { - kfree(fbi); - return NULL; - } - - strcpy(fbi->fb.fix.id, PXA_NAME); - - fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS; - fbi->fb.fix.type_aux = 0; - fbi->fb.fix.xpanstep = 0; - fbi->fb.fix.ypanstep = 0; - fbi->fb.fix.ywrapstep = 0; - fbi->fb.fix.accel = FB_ACCEL_NONE; - - fbi->fb.var.nonstd = 0; - fbi->fb.var.activate = FB_ACTIVATE_NOW; - fbi->fb.var.height = -1; - fbi->fb.var.width = -1; - fbi->fb.var.accel_flags = 0; - fbi->fb.var.vmode = FB_VMODE_NONINTERLACED; - - fbi->fb.fbops = &pxafb_ops; - fbi->fb.flags = FBINFO_DEFAULT; - fbi->fb.node = -1; - - addr = fbi; - addr = addr + sizeof(struct pxafb_info); - fbi->fb.pseudo_palette = addr; - - pxafb_setmode(&fbi->fb.var, mode); - - fbi->cmap_inverse = inf->cmap_inverse; - fbi->cmap_static = inf->cmap_static; - - fbi->lccr0 = inf->lccr0; - fbi->lccr3 = inf->lccr3; - fbi->lccr4 = inf->lccr4; - fbi->state = C_STARTUP; - fbi->task_state = (u_char)-1; - - for (i = 0; i < inf->num_modes; i++) { - smemlen = mode[i].xres * mode[i].yres * mode[i].bpp / 8; - if (smemlen > fbi->fb.fix.smem_len) - fbi->fb.fix.smem_len = smemlen; - } - - init_waitqueue_head(&fbi->ctrlr_wait); - INIT_WORK(&fbi->task, pxafb_task); - init_MUTEX(&fbi->ctrlr_sem); - - return fbi; -} - -#ifdef CONFIG_FB_PXA_PARAMETERS -static int __init pxafb_parse_options(struct device *dev, char *options) -{ - struct pxafb_mach_info *inf = dev->platform_data; - char *this_opt; - - if (!options || !*options) - return 0; - - dev_dbg(dev, "options are \"%s\"\n", options ? options : "null"); - - /* could be made table driven or similar?... */ - while ((this_opt = strsep(&options, ",")) != NULL) { - if (!strncmp(this_opt, "mode:", 5)) { - const char *name = this_opt+5; - unsigned int namelen = strlen(name); - int res_specified = 0, bpp_specified = 0; - unsigned int xres = 0, yres = 0, bpp = 0; - int yres_specified = 0; - int i; - for (i = namelen-1; i >= 0; i--) { - switch (name[i]) { - case '-': - namelen = i; - if (!bpp_specified && !yres_specified) { - bpp = simple_strtoul(&name[i+1], NULL, 0); - bpp_specified = 1; - } else - goto done; - break; - case 'x': - if (!yres_specified) { - yres = simple_strtoul(&name[i+1], NULL, 0); - yres_specified = 1; - } else - goto done; - break; - case '0' ... '9': - break; - default: - goto done; - } - } - if (i < 0 && yres_specified) { - xres = simple_strtoul(name, NULL, 0); - res_specified = 1; - } - done: - if (res_specified) { - dev_info(dev, "overriding resolution: %dx%d\n", xres, yres); - inf->modes[0].xres = xres; inf->modes[0].yres = yres; - } - if (bpp_specified) - switch (bpp) { - case 1: - case 2: - case 4: - case 8: - case 16: - inf->modes[0].bpp = bpp; - dev_info(dev, "overriding bit depth: %d\n", bpp); - break; - default: - dev_err(dev, "Depth %d is not valid\n", bpp); - } - } else if (!strncmp(this_opt, "pixclock:", 9)) { - inf->modes[0].pixclock = simple_strtoul(this_opt+9, NULL, 0); - dev_info(dev, "override pixclock: %ld\n", inf->modes[0].pixclock); - } else if (!strncmp(this_opt, "left:", 5)) { - inf->modes[0].left_margin = simple_strtoul(this_opt+5, NULL, 0); - dev_info(dev, "override left: %u\n", inf->modes[0].left_margin); - } else if (!strncmp(this_opt, "right:", 6)) { - inf->modes[0].right_margin = simple_strtoul(this_opt+6, NULL, 0); - dev_info(dev, "override right: %u\n", inf->modes[0].right_margin); - } else if (!strncmp(this_opt, "upper:", 6)) { - inf->modes[0].upper_margin = simple_strtoul(this_opt+6, NULL, 0); - dev_info(dev, "override upper: %u\n", inf->modes[0].upper_margin); - } else if (!strncmp(this_opt, "lower:", 6)) { - inf->modes[0].lower_margin = simple_strtoul(this_opt+6, NULL, 0); - dev_info(dev, "override lower: %u\n", inf->modes[0].lower_margin); - } else if (!strncmp(this_opt, "hsynclen:", 9)) { - inf->modes[0].hsync_len = simple_strtoul(this_opt+9, NULL, 0); - dev_info(dev, "override hsynclen: %u\n", inf->modes[0].hsync_len); - } else if (!strncmp(this_opt, "vsynclen:", 9)) { - inf->modes[0].vsync_len = simple_strtoul(this_opt+9, NULL, 0); - dev_info(dev, "override vsynclen: %u\n", inf->modes[0].vsync_len); - } else if (!strncmp(this_opt, "hsync:", 6)) { - if (simple_strtoul(this_opt+6, NULL, 0) == 0) { - dev_info(dev, "override hsync: Active Low\n"); - inf->modes[0].sync &= ~FB_SYNC_HOR_HIGH_ACT; - } else { - dev_info(dev, "override hsync: Active High\n"); - inf->modes[0].sync |= FB_SYNC_HOR_HIGH_ACT; - } - } else if (!strncmp(this_opt, "vsync:", 6)) { - if (simple_strtoul(this_opt+6, NULL, 0) == 0) { - dev_info(dev, "override vsync: Active Low\n"); - inf->modes[0].sync &= ~FB_SYNC_VERT_HIGH_ACT; - } else { - dev_info(dev, "override vsync: Active High\n"); - inf->modes[0].sync |= FB_SYNC_VERT_HIGH_ACT; - } - } else if (!strncmp(this_opt, "dpc:", 4)) { - if (simple_strtoul(this_opt+4, NULL, 0) == 0) { - dev_info(dev, "override double pixel clock: false\n"); - inf->lccr3 &= ~LCCR3_DPC; - } else { - dev_info(dev, "override double pixel clock: true\n"); - inf->lccr3 |= LCCR3_DPC; - } - } else if (!strncmp(this_opt, "outputen:", 9)) { - if (simple_strtoul(this_opt+9, NULL, 0) == 0) { - dev_info(dev, "override output enable: active low\n"); - inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnL; - } else { - dev_info(dev, "override output enable: active high\n"); - inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnH; - } - } else if (!strncmp(this_opt, "pixclockpol:", 12)) { - if (simple_strtoul(this_opt+12, NULL, 0) == 0) { - dev_info(dev, "override pixel clock polarity: falling edge\n"); - inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixFlEdg; - } else { - dev_info(dev, "override pixel clock polarity: rising edge\n"); - inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixRsEdg; - } - } else if (!strncmp(this_opt, "color", 5)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_CMS) | LCCR0_Color; - } else if (!strncmp(this_opt, "mono", 4)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_CMS) | LCCR0_Mono; - } else if (!strncmp(this_opt, "active", 6)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_PAS) | LCCR0_Act; - } else if (!strncmp(this_opt, "passive", 7)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_PAS) | LCCR0_Pas; - } else if (!strncmp(this_opt, "single", 6)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_SDS) | LCCR0_Sngl; - } else if (!strncmp(this_opt, "dual", 4)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_SDS) | LCCR0_Dual; - } else if (!strncmp(this_opt, "4pix", 4)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_DPD) | LCCR0_4PixMono; - } else if (!strncmp(this_opt, "8pix", 4)) { - inf->lccr0 = (inf->lccr0 & ~LCCR0_DPD) | LCCR0_8PixMono; - } else { - dev_err(dev, "unknown option: %s\n", this_opt); - return -EINVAL; - } - } - return 0; - -} -#endif - -static int __init pxafb_probe(struct platform_device *dev) -{ - struct pxafb_info *fbi; - struct pxafb_mach_info *inf; - int ret; - - dev_dbg(&dev->dev, "pxafb_probe\n"); - - inf = dev->dev.platform_data; - ret = -ENOMEM; - fbi = NULL; - if (!inf) - goto failed; - -#ifdef CONFIG_FB_PXA_PARAMETERS - ret = pxafb_parse_options(&dev->dev, g_options); - if (ret < 0) - goto failed; -#endif - -#ifdef DEBUG_VAR - /* Check for various illegal bit-combinations. Currently only - * a warning is given. */ - - if (inf->lccr0 & LCCR0_INVALID_CONFIG_MASK) - dev_warn(&dev->dev, "machine LCCR0 setting contains illegal bits: %08x\n", - inf->lccr0 & LCCR0_INVALID_CONFIG_MASK); - if (inf->lccr3 & LCCR3_INVALID_CONFIG_MASK) - dev_warn(&dev->dev, "machine LCCR3 setting contains illegal bits: %08x\n", - inf->lccr3 & LCCR3_INVALID_CONFIG_MASK); - if (inf->lccr0 & LCCR0_DPD && - ((inf->lccr0 & LCCR0_PAS) != LCCR0_Pas || - (inf->lccr0 & LCCR0_SDS) != LCCR0_Sngl || - (inf->lccr0 & LCCR0_CMS) != LCCR0_Mono)) - dev_warn(&dev->dev, "Double Pixel Data (DPD) mode is only valid in passive mono" - " single panel mode\n"); - if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Act && - (inf->lccr0 & LCCR0_SDS) == LCCR0_Dual) - dev_warn(&dev->dev, "Dual panel only valid in passive mode\n"); - if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Pas && - (inf->modes->upper_margin || inf->modes->lower_margin)) - dev_warn(&dev->dev, "Upper and lower margins must be 0 in passive mode\n"); -#endif - - dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n",inf->modes->xres, inf->modes->yres, inf->modes->bpp); - if (inf->modes->xres == 0 || inf->modes->yres == 0 || inf->modes->bpp == 0) { - dev_err(&dev->dev, "Invalid resolution or bit depth\n"); - ret = -EINVAL; - goto failed; - } - pxafb_backlight_power = inf->pxafb_backlight_power; - pxafb_lcd_power = inf->pxafb_lcd_power; - fbi = pxafb_init_fbinfo(&dev->dev); - if (!fbi) { - dev_err(&dev->dev, "Failed to initialize framebuffer device\n"); - ret = -ENOMEM; // only reason for pxafb_init_fbinfo to fail is kmalloc - goto failed; - } - - /* Initialize video memory */ - ret = pxafb_map_video_memory(fbi); - if (ret) { - dev_err(&dev->dev, "Failed to allocate video RAM: %d\n", ret); - ret = -ENOMEM; - goto failed; - } - - ret = request_irq(IRQ_LCD, pxafb_handle_irq, IRQF_DISABLED, "LCD", fbi); - if (ret) { - dev_err(&dev->dev, "request_irq failed: %d\n", ret); - ret = -EBUSY; - goto failed; - } - - /* - * This makes sure that our colour bitfield - * descriptors are correctly initialised. - */ - pxafb_check_var(&fbi->fb.var, &fbi->fb); - pxafb_set_par(&fbi->fb); - - platform_set_drvdata(dev, fbi); - - ret = register_framebuffer(&fbi->fb); - if (ret < 0) { - dev_err(&dev->dev, "Failed to register framebuffer device: %d\n", ret); - goto failed; - } - -#ifdef CONFIG_PM - // TODO -#endif - -#ifdef CONFIG_CPU_FREQ - fbi->freq_transition.notifier_call = pxafb_freq_transition; - fbi->freq_policy.notifier_call = pxafb_freq_policy; - cpufreq_register_notifier(&fbi->freq_transition, CPUFREQ_TRANSITION_NOTIFIER); - cpufreq_register_notifier(&fbi->freq_policy, CPUFREQ_POLICY_NOTIFIER); -#endif - - /* - * Ok, now enable the LCD controller - */ - set_ctrlr_state(fbi, C_ENABLE); - - return 0; - -failed: - platform_set_drvdata(dev, NULL); - kfree(fbi); - return ret; -} - -static struct platform_driver pxafb_driver = { - .probe = pxafb_probe, -#ifdef CONFIG_PM - .suspend = pxafb_suspend, - .resume = pxafb_resume, -#endif - .driver = { - .name = "pxa2xx-fb", - }, -}; - -#ifndef MODULE -static int __devinit pxafb_setup(char *options) -{ -# ifdef CONFIG_FB_PXA_PARAMETERS - if (options) - strlcpy(g_options, options, sizeof(g_options)); -# endif - return 0; -} -#else -# ifdef CONFIG_FB_PXA_PARAMETERS -module_param_string(options, g_options, sizeof(g_options), 0); -MODULE_PARM_DESC(options, "LCD parameters (see Documentation/fb/pxafb.txt)"); -# endif -#endif - -static int __devinit pxafb_init(void) -{ -#ifndef MODULE - char *option = NULL; - - if (fb_get_options("pxafb", &option)) - return -ENODEV; - pxafb_setup(option); -#endif - return platform_driver_register(&pxafb_driver); -} - -module_init(pxafb_init); - -MODULE_DESCRIPTION("loadable framebuffer driver for PXA"); -MODULE_LICENSE("GPL"); |