diff options
Diffstat (limited to 'drivers/video/fbdev/w100fb.c')
| -rw-r--r-- | drivers/video/fbdev/w100fb.c | 1649 |
1 files changed, 1649 insertions, 0 deletions
diff --git a/drivers/video/fbdev/w100fb.c b/drivers/video/fbdev/w100fb.c new file mode 100644 index 000000000..307066113 --- /dev/null +++ b/drivers/video/fbdev/w100fb.c @@ -0,0 +1,1649 @@ +/* + * linux/drivers/video/w100fb.c + * + * Frame Buffer Device for ATI Imageon w100 (Wallaby) + * + * Copyright (C) 2002, ATI Corp. + * Copyright (C) 2004-2006 Richard Purdie + * Copyright (c) 2005 Ian Molton + * Copyright (c) 2006 Alberto Mardegan + * + * Rewritten for 2.6 by Richard Purdie <rpurdie@rpsys.net> + * + * Generic platform support by Ian Molton <spyro@f2s.com> + * and Richard Purdie <rpurdie@rpsys.net> + * + * w32xx support by Ian Molton + * + * Hardware acceleration support by Alberto Mardegan + * <mardy@users.sourceforge.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/vmalloc.h> +#include <linux/module.h> +#include <asm/io.h> +#include <linux/uaccess.h> +#include <video/w100fb.h> +#include "w100fb.h" + +/* + * Prototypes + */ +static void w100_suspend(u32 mode); +static void w100_vsync(void); +static void w100_hw_init(struct w100fb_par*); +static void w100_pwm_setup(struct w100fb_par*); +static void w100_init_clocks(struct w100fb_par*); +static void w100_setup_memory(struct w100fb_par*); +static void w100_init_lcd(struct w100fb_par*); +static void w100_set_dispregs(struct w100fb_par*); +static void w100_update_enable(void); +static void w100_update_disable(void); +static void calc_hsync(struct w100fb_par *par); +static void w100_init_graphic_engine(struct w100fb_par *par); +struct w100_pll_info *w100_get_xtal_table(unsigned int freq); + +/* Pseudo palette size */ +#define MAX_PALETTES 16 + +#define W100_SUSPEND_EXTMEM 0 +#define W100_SUSPEND_ALL 1 + +#define BITS_PER_PIXEL 16 + +/* Remapped addresses for base cfg, memmapped regs and the frame buffer itself */ +static void *remapped_base; +static void *remapped_regs; +static void *remapped_fbuf; + +#define REMAPPED_FB_LEN 0x15ffff + +/* This is the offset in the w100's address space we map the current + framebuffer memory to. We use the position of external memory as + we can remap internal memory to there if external isn't present. */ +#define W100_FB_BASE MEM_EXT_BASE_VALUE + + +/* + * Sysfs functions + */ +static ssize_t flip_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct fb_info *info = dev_get_drvdata(dev); + struct w100fb_par *par=info->par; + + return sprintf(buf, "%d\n",par->flip); +} + +static ssize_t flip_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned int flip; + struct fb_info *info = dev_get_drvdata(dev); + struct w100fb_par *par=info->par; + + flip = simple_strtoul(buf, NULL, 10); + + if (flip > 0) + par->flip = 1; + else + par->flip = 0; + + w100_update_disable(); + w100_set_dispregs(par); + w100_update_enable(); + + calc_hsync(par); + + return count; +} + +static DEVICE_ATTR_RW(flip); + +static ssize_t w100fb_reg_read(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned long regs, param; + regs = simple_strtoul(buf, NULL, 16); + param = readl(remapped_regs + regs); + printk("Read Register 0x%08lX: 0x%08lX\n", regs, param); + return count; +} + +static DEVICE_ATTR(reg_read, 0200, NULL, w100fb_reg_read); + +static ssize_t w100fb_reg_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned long regs, param; + sscanf(buf, "%lx %lx", ®s, ¶m); + + if (regs <= 0x2000) { + printk("Write Register 0x%08lX: 0x%08lX\n", regs, param); + writel(param, remapped_regs + regs); + } + + return count; +} + +static DEVICE_ATTR(reg_write, 0200, NULL, w100fb_reg_write); + + +static ssize_t fastpllclk_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct fb_info *info = dev_get_drvdata(dev); + struct w100fb_par *par=info->par; + + return sprintf(buf, "%d\n",par->fastpll_mode); +} + +static ssize_t fastpllclk_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + struct fb_info *info = dev_get_drvdata(dev); + struct w100fb_par *par=info->par; + + if (simple_strtoul(buf, NULL, 10) > 0) { + par->fastpll_mode=1; + printk("w100fb: Using fast system clock (if possible)\n"); + } else { + par->fastpll_mode=0; + printk("w100fb: Using normal system clock\n"); + } + + w100_init_clocks(par); + calc_hsync(par); + + return count; +} + +static DEVICE_ATTR_RW(fastpllclk); + +/* + * Some touchscreens need hsync information from the video driver to + * function correctly. We export it here. + */ +unsigned long w100fb_get_hsynclen(struct device *dev) +{ + struct fb_info *info = dev_get_drvdata(dev); + struct w100fb_par *par=info->par; + + /* If display is blanked/suspended, hsync isn't active */ + if (par->blanked) + return 0; + else + return par->hsync_len; +} +EXPORT_SYMBOL(w100fb_get_hsynclen); + +static void w100fb_clear_screen(struct w100fb_par *par) +{ + memset_io(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), 0, (par->xres * par->yres * BITS_PER_PIXEL/8)); +} + + +/* + * Set a palette value from rgb components + */ +static int w100fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int trans, struct fb_info *info) +{ + unsigned int val; + int ret = 1; + + /* + * If greyscale is true, then we convert the RGB value + * to greyscale no matter what visual we are using. + */ + if (info->var.grayscale) + red = green = blue = (19595 * red + 38470 * green + 7471 * blue) >> 16; + + /* + * 16-bit True Colour. We encode the RGB value + * according to the RGB bitfield information. + */ + if (regno < MAX_PALETTES) { + u32 *pal = info->pseudo_palette; + + val = (red & 0xf800) | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); + pal[regno] = val; + ret = 0; + } + return ret; +} + + +/* + * Blank the display based on value in blank_mode + */ +static int w100fb_blank(int blank_mode, struct fb_info *info) +{ + struct w100fb_par *par = info->par; + struct w100_tg_info *tg = par->mach->tg; + + switch(blank_mode) { + + case FB_BLANK_NORMAL: /* Normal blanking */ + case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */ + case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */ + case FB_BLANK_POWERDOWN: /* Poweroff */ + if (par->blanked == 0) { + if(tg && tg->suspend) + tg->suspend(par); + par->blanked = 1; + } + break; + + case FB_BLANK_UNBLANK: /* Unblanking */ + if (par->blanked != 0) { + if(tg && tg->resume) + tg->resume(par); + par->blanked = 0; + } + break; + } + return 0; +} + + +static void w100_fifo_wait(int entries) +{ + union rbbm_status_u status; + int i; + + for (i = 0; i < 2000000; i++) { + status.val = readl(remapped_regs + mmRBBM_STATUS); + if (status.f.cmdfifo_avail >= entries) + return; + udelay(1); + } + printk(KERN_ERR "w100fb: FIFO Timeout!\n"); +} + + +static int w100fb_sync(struct fb_info *info) +{ + union rbbm_status_u status; + int i; + + for (i = 0; i < 2000000; i++) { + status.val = readl(remapped_regs + mmRBBM_STATUS); + if (!status.f.gui_active) + return 0; + udelay(1); + } + printk(KERN_ERR "w100fb: Graphic engine timeout!\n"); + return -EBUSY; +} + + +static void w100_init_graphic_engine(struct w100fb_par *par) +{ + union dp_gui_master_cntl_u gmc; + union dp_mix_u dp_mix; + union dp_datatype_u dp_datatype; + union dp_cntl_u dp_cntl; + + w100_fifo_wait(4); + writel(W100_FB_BASE, remapped_regs + mmDST_OFFSET); + writel(par->xres, remapped_regs + mmDST_PITCH); + writel(W100_FB_BASE, remapped_regs + mmSRC_OFFSET); + writel(par->xres, remapped_regs + mmSRC_PITCH); + + w100_fifo_wait(3); + writel(0, remapped_regs + mmSC_TOP_LEFT); + writel((par->yres << 16) | par->xres, remapped_regs + mmSC_BOTTOM_RIGHT); + writel(0x1fff1fff, remapped_regs + mmSRC_SC_BOTTOM_RIGHT); + + w100_fifo_wait(4); + dp_cntl.val = 0; + dp_cntl.f.dst_x_dir = 1; + dp_cntl.f.dst_y_dir = 1; + dp_cntl.f.src_x_dir = 1; + dp_cntl.f.src_y_dir = 1; + dp_cntl.f.dst_major_x = 1; + dp_cntl.f.src_major_x = 1; + writel(dp_cntl.val, remapped_regs + mmDP_CNTL); + + gmc.val = 0; + gmc.f.gmc_src_pitch_offset_cntl = 1; + gmc.f.gmc_dst_pitch_offset_cntl = 1; + gmc.f.gmc_src_clipping = 1; + gmc.f.gmc_dst_clipping = 1; + gmc.f.gmc_brush_datatype = GMC_BRUSH_NONE; + gmc.f.gmc_dst_datatype = 3; /* from DstType_16Bpp_444 */ + gmc.f.gmc_src_datatype = SRC_DATATYPE_EQU_DST; + gmc.f.gmc_byte_pix_order = 1; + gmc.f.gmc_default_sel = 0; + gmc.f.gmc_rop3 = ROP3_SRCCOPY; + gmc.f.gmc_dp_src_source = DP_SRC_MEM_RECTANGULAR; + gmc.f.gmc_clr_cmp_fcn_dis = 1; + gmc.f.gmc_wr_msk_dis = 1; + gmc.f.gmc_dp_op = DP_OP_ROP; + writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL); + + dp_datatype.val = dp_mix.val = 0; + dp_datatype.f.dp_dst_datatype = gmc.f.gmc_dst_datatype; + dp_datatype.f.dp_brush_datatype = gmc.f.gmc_brush_datatype; + dp_datatype.f.dp_src2_type = 0; + dp_datatype.f.dp_src2_datatype = gmc.f.gmc_src_datatype; + dp_datatype.f.dp_src_datatype = gmc.f.gmc_src_datatype; + dp_datatype.f.dp_byte_pix_order = gmc.f.gmc_byte_pix_order; + writel(dp_datatype.val, remapped_regs + mmDP_DATATYPE); + + dp_mix.f.dp_src_source = gmc.f.gmc_dp_src_source; + dp_mix.f.dp_src2_source = 1; + dp_mix.f.dp_rop3 = gmc.f.gmc_rop3; + dp_mix.f.dp_op = gmc.f.gmc_dp_op; + writel(dp_mix.val, remapped_regs + mmDP_MIX); +} + + +static void w100fb_fillrect(struct fb_info *info, + const struct fb_fillrect *rect) +{ + union dp_gui_master_cntl_u gmc; + + if (info->state != FBINFO_STATE_RUNNING) + return; + if (info->flags & FBINFO_HWACCEL_DISABLED) { + cfb_fillrect(info, rect); + return; + } + + gmc.val = readl(remapped_regs + mmDP_GUI_MASTER_CNTL); + gmc.f.gmc_rop3 = ROP3_PATCOPY; + gmc.f.gmc_brush_datatype = GMC_BRUSH_SOLID_COLOR; + w100_fifo_wait(2); + writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL); + writel(rect->color, remapped_regs + mmDP_BRUSH_FRGD_CLR); + + w100_fifo_wait(2); + writel((rect->dy << 16) | (rect->dx & 0xffff), remapped_regs + mmDST_Y_X); + writel((rect->width << 16) | (rect->height & 0xffff), + remapped_regs + mmDST_WIDTH_HEIGHT); +} + + +static void w100fb_copyarea(struct fb_info *info, + const struct fb_copyarea *area) +{ + u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy; + u32 h = area->height, w = area->width; + union dp_gui_master_cntl_u gmc; + + if (info->state != FBINFO_STATE_RUNNING) + return; + if (info->flags & FBINFO_HWACCEL_DISABLED) { + cfb_copyarea(info, area); + return; + } + + gmc.val = readl(remapped_regs + mmDP_GUI_MASTER_CNTL); + gmc.f.gmc_rop3 = ROP3_SRCCOPY; + gmc.f.gmc_brush_datatype = GMC_BRUSH_NONE; + w100_fifo_wait(1); + writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL); + + w100_fifo_wait(3); + writel((sy << 16) | (sx & 0xffff), remapped_regs + mmSRC_Y_X); + writel((dy << 16) | (dx & 0xffff), remapped_regs + mmDST_Y_X); + writel((w << 16) | (h & 0xffff), remapped_regs + mmDST_WIDTH_HEIGHT); +} + + +/* + * Change the resolution by calling the appropriate hardware functions + */ +static void w100fb_activate_var(struct w100fb_par *par) +{ + struct w100_tg_info *tg = par->mach->tg; + + w100_pwm_setup(par); + w100_setup_memory(par); + w100_init_clocks(par); + w100fb_clear_screen(par); + w100_vsync(); + + w100_update_disable(); + w100_init_lcd(par); + w100_set_dispregs(par); + w100_update_enable(); + w100_init_graphic_engine(par); + + calc_hsync(par); + + if (!par->blanked && tg && tg->change) + tg->change(par); +} + + +/* Select the smallest mode that allows the desired resolution to be + * displayed. If desired, the x and y parameters can be rounded up to + * match the selected mode. + */ +static struct w100_mode *w100fb_get_mode(struct w100fb_par *par, unsigned int *x, unsigned int *y, int saveval) +{ + struct w100_mode *mode = NULL; + struct w100_mode *modelist = par->mach->modelist; + unsigned int best_x = 0xffffffff, best_y = 0xffffffff; + unsigned int i; + + for (i = 0 ; i < par->mach->num_modes ; i++) { + if (modelist[i].xres >= *x && modelist[i].yres >= *y && + modelist[i].xres < best_x && modelist[i].yres < best_y) { + best_x = modelist[i].xres; + best_y = modelist[i].yres; + mode = &modelist[i]; + } else if(modelist[i].xres >= *y && modelist[i].yres >= *x && + modelist[i].xres < best_y && modelist[i].yres < best_x) { + best_x = modelist[i].yres; + best_y = modelist[i].xres; + mode = &modelist[i]; + } + } + + if (mode && saveval) { + *x = best_x; + *y = best_y; + } + + return mode; +} + + +/* + * w100fb_check_var(): + * Get the video params out of 'var'. If a value doesn't fit, round it up, + * if it's too big, return -EINVAL. + */ +static int w100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + struct w100fb_par *par=info->par; + + if(!w100fb_get_mode(par, &var->xres, &var->yres, 1)) + return -EINVAL; + + if (par->mach->mem && ((var->xres*var->yres*BITS_PER_PIXEL/8) > (par->mach->mem->size+1))) + return -EINVAL; + + if (!par->mach->mem && ((var->xres*var->yres*BITS_PER_PIXEL/8) > (MEM_INT_SIZE+1))) + return -EINVAL; + + var->xres_virtual = max(var->xres_virtual, var->xres); + var->yres_virtual = max(var->yres_virtual, var->yres); + + if (var->bits_per_pixel > BITS_PER_PIXEL) + return -EINVAL; + else + var->bits_per_pixel = BITS_PER_PIXEL; + + 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; + + var->nonstd = 0; + var->height = -1; + var->width = -1; + var->vmode = FB_VMODE_NONINTERLACED; + var->sync = 0; + var->pixclock = 0x04; /* 171521; */ + + return 0; +} + + +/* + * w100fb_set_par(): + * Set the user defined part of the display for the specified console + * by looking at the values in info.var + */ +static int w100fb_set_par(struct fb_info *info) +{ + struct w100fb_par *par=info->par; + + if (par->xres != info->var.xres || par->yres != info->var.yres) { + par->xres = info->var.xres; + par->yres = info->var.yres; + par->mode = w100fb_get_mode(par, &par->xres, &par->yres, 0); + + info->fix.visual = FB_VISUAL_TRUECOLOR; + info->fix.ypanstep = 0; + info->fix.ywrapstep = 0; + info->fix.line_length = par->xres * BITS_PER_PIXEL / 8; + + mutex_lock(&info->mm_lock); + if ((par->xres*par->yres*BITS_PER_PIXEL/8) > (MEM_INT_SIZE+1)) { + par->extmem_active = 1; + info->fix.smem_len = par->mach->mem->size+1; + } else { + par->extmem_active = 0; + info->fix.smem_len = MEM_INT_SIZE+1; + } + mutex_unlock(&info->mm_lock); + + w100fb_activate_var(par); + } + return 0; +} + + +/* + * Frame buffer operations + */ +static struct fb_ops w100fb_ops = { + .owner = THIS_MODULE, + .fb_check_var = w100fb_check_var, + .fb_set_par = w100fb_set_par, + .fb_setcolreg = w100fb_setcolreg, + .fb_blank = w100fb_blank, + .fb_fillrect = w100fb_fillrect, + .fb_copyarea = w100fb_copyarea, + .fb_imageblit = cfb_imageblit, + .fb_sync = w100fb_sync, +}; + +#ifdef CONFIG_PM +static void w100fb_save_vidmem(struct w100fb_par *par) +{ + int memsize; + + if (par->extmem_active) { + memsize=par->mach->mem->size; + par->saved_extmem = vmalloc(memsize); + if (par->saved_extmem) + memcpy_fromio(par->saved_extmem, remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), memsize); + } + memsize=MEM_INT_SIZE; + par->saved_intmem = vmalloc(memsize); + if (par->saved_intmem && par->extmem_active) + memcpy_fromio(par->saved_intmem, remapped_fbuf + (W100_FB_BASE-MEM_INT_BASE_VALUE), memsize); + else if (par->saved_intmem) + memcpy_fromio(par->saved_intmem, remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), memsize); +} + +static void w100fb_restore_vidmem(struct w100fb_par *par) +{ + int memsize; + + if (par->extmem_active && par->saved_extmem) { + memsize=par->mach->mem->size; + memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), par->saved_extmem, memsize); + vfree(par->saved_extmem); + par->saved_extmem = NULL; + } + if (par->saved_intmem) { + memsize=MEM_INT_SIZE; + if (par->extmem_active) + memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_INT_BASE_VALUE), par->saved_intmem, memsize); + else + memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), par->saved_intmem, memsize); + vfree(par->saved_intmem); + par->saved_intmem = NULL; + } +} + +static int w100fb_suspend(struct platform_device *dev, pm_message_t state) +{ + struct fb_info *info = platform_get_drvdata(dev); + struct w100fb_par *par=info->par; + struct w100_tg_info *tg = par->mach->tg; + + w100fb_save_vidmem(par); + if(tg && tg->suspend) + tg->suspend(par); + w100_suspend(W100_SUSPEND_ALL); + par->blanked = 1; + + return 0; +} + +static int w100fb_resume(struct platform_device *dev) +{ + struct fb_info *info = platform_get_drvdata(dev); + struct w100fb_par *par=info->par; + struct w100_tg_info *tg = par->mach->tg; + + w100_hw_init(par); + w100fb_activate_var(par); + w100fb_restore_vidmem(par); + if(tg && tg->resume) + tg->resume(par); + par->blanked = 0; + + return 0; +} +#else +#define w100fb_suspend NULL +#define w100fb_resume NULL +#endif + + +int w100fb_probe(struct platform_device *pdev) +{ + int err = -EIO; + struct w100fb_mach_info *inf; + struct fb_info *info = NULL; + struct w100fb_par *par; + struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + unsigned int chip_id; + + if (!mem) + return -EINVAL; + + /* Remap the chip base address */ + remapped_base = ioremap_nocache(mem->start+W100_CFG_BASE, W100_CFG_LEN); + if (remapped_base == NULL) + goto out; + + /* Map the register space */ + remapped_regs = ioremap_nocache(mem->start+W100_REG_BASE, W100_REG_LEN); + if (remapped_regs == NULL) + goto out; + + /* Identify the chip */ + printk("Found "); + chip_id = readl(remapped_regs + mmCHIP_ID); + switch(chip_id) { + case CHIP_ID_W100: printk("w100"); break; + case CHIP_ID_W3200: printk("w3200"); break; + case CHIP_ID_W3220: printk("w3220"); break; + default: + printk("Unknown imageon chip ID\n"); + err = -ENODEV; + goto out; + } + printk(" at 0x%08lx.\n", (unsigned long) mem->start+W100_CFG_BASE); + + /* Remap the framebuffer */ + remapped_fbuf = ioremap_nocache(mem->start+MEM_WINDOW_BASE, MEM_WINDOW_SIZE); + if (remapped_fbuf == NULL) + goto out; + + info=framebuffer_alloc(sizeof(struct w100fb_par), &pdev->dev); + if (!info) { + err = -ENOMEM; + goto out; + } + + par = info->par; + platform_set_drvdata(pdev, info); + + inf = dev_get_platdata(&pdev->dev); + par->chip_id = chip_id; + par->mach = inf; + par->fastpll_mode = 0; + par->blanked = 0; + + par->pll_table=w100_get_xtal_table(inf->xtal_freq); + if (!par->pll_table) { + printk(KERN_ERR "No matching Xtal definition found\n"); + err = -EINVAL; + goto out; + } + + info->pseudo_palette = kmalloc_array(MAX_PALETTES, sizeof(u32), + GFP_KERNEL); + if (!info->pseudo_palette) { + err = -ENOMEM; + goto out; + } + + info->fbops = &w100fb_ops; + info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | + FBINFO_HWACCEL_FILLRECT; + info->node = -1; + info->screen_base = remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE); + info->screen_size = REMAPPED_FB_LEN; + + strcpy(info->fix.id, "w100fb"); + info->fix.type = FB_TYPE_PACKED_PIXELS; + info->fix.type_aux = 0; + info->fix.accel = FB_ACCEL_NONE; + info->fix.smem_start = mem->start+W100_FB_BASE; + info->fix.mmio_start = mem->start+W100_REG_BASE; + info->fix.mmio_len = W100_REG_LEN; + + if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) { + err = -ENOMEM; + goto out; + } + + par->mode = &inf->modelist[0]; + if(inf->init_mode & INIT_MODE_ROTATED) { + info->var.xres = par->mode->yres; + info->var.yres = par->mode->xres; + } + else { + info->var.xres = par->mode->xres; + info->var.yres = par->mode->yres; + } + + if(inf->init_mode &= INIT_MODE_FLIPPED) + par->flip = 1; + else + par->flip = 0; + + info->var.xres_virtual = info->var.xres; + info->var.yres_virtual = info->var.yres; + info->var.pixclock = 0x04; /* 171521; */ + info->var.sync = 0; + info->var.grayscale = 0; + info->var.xoffset = info->var.yoffset = 0; + info->var.accel_flags = 0; + info->var.activate = FB_ACTIVATE_NOW; + + w100_hw_init(par); + + if (w100fb_check_var(&info->var, info) < 0) { + err = -EINVAL; + goto out; + } + + if (register_framebuffer(info) < 0) { + err = -EINVAL; + goto out; + } + + err = device_create_file(&pdev->dev, &dev_attr_fastpllclk); + err |= device_create_file(&pdev->dev, &dev_attr_reg_read); + err |= device_create_file(&pdev->dev, &dev_attr_reg_write); + err |= device_create_file(&pdev->dev, &dev_attr_flip); + + if (err != 0) + fb_warn(info, "failed to register attributes (%d)\n", err); + + fb_info(info, "%s frame buffer device\n", info->fix.id); + return 0; +out: + if (info) { + fb_dealloc_cmap(&info->cmap); + kfree(info->pseudo_palette); + } + if (remapped_fbuf != NULL) { + iounmap(remapped_fbuf); + remapped_fbuf = NULL; + } + if (remapped_regs != NULL) { + iounmap(remapped_regs); + remapped_regs = NULL; + } + if (remapped_base != NULL) { + iounmap(remapped_base); + remapped_base = NULL; + } + if (info) + framebuffer_release(info); + return err; +} + + +static int w100fb_remove(struct platform_device *pdev) +{ + struct fb_info *info = platform_get_drvdata(pdev); + struct w100fb_par *par=info->par; + + device_remove_file(&pdev->dev, &dev_attr_fastpllclk); + device_remove_file(&pdev->dev, &dev_attr_reg_read); + device_remove_file(&pdev->dev, &dev_attr_reg_write); + device_remove_file(&pdev->dev, &dev_attr_flip); + + unregister_framebuffer(info); + + vfree(par->saved_intmem); + vfree(par->saved_extmem); + kfree(info->pseudo_palette); + fb_dealloc_cmap(&info->cmap); + + iounmap(remapped_base); + remapped_base = NULL; + iounmap(remapped_regs); + remapped_regs = NULL; + iounmap(remapped_fbuf); + remapped_fbuf = NULL; + + framebuffer_release(info); + + return 0; +} + + +/* ------------------- chipset specific functions -------------------------- */ + + +static void w100_soft_reset(void) +{ + u16 val = readw((u16 *) remapped_base + cfgSTATUS); + writew(val | 0x08, (u16 *) remapped_base + cfgSTATUS); + udelay(100); + writew(0x00, (u16 *) remapped_base + cfgSTATUS); + udelay(100); +} + +static void w100_update_disable(void) +{ + union disp_db_buf_cntl_wr_u disp_db_buf_wr_cntl; + + /* Prevent display updates */ + disp_db_buf_wr_cntl.f.db_buf_cntl = 0x1e; + disp_db_buf_wr_cntl.f.update_db_buf = 0; + disp_db_buf_wr_cntl.f.en_db_buf = 0; + writel((u32) (disp_db_buf_wr_cntl.val), remapped_regs + mmDISP_DB_BUF_CNTL); +} + +static void w100_update_enable(void) +{ + union disp_db_buf_cntl_wr_u disp_db_buf_wr_cntl; + + /* Enable display updates */ + disp_db_buf_wr_cntl.f.db_buf_cntl = 0x1e; + disp_db_buf_wr_cntl.f.update_db_buf = 1; + disp_db_buf_wr_cntl.f.en_db_buf = 1; + writel((u32) (disp_db_buf_wr_cntl.val), remapped_regs + mmDISP_DB_BUF_CNTL); +} + +unsigned long w100fb_gpio_read(int port) +{ + unsigned long value; + + if (port==W100_GPIO_PORT_A) + value = readl(remapped_regs + mmGPIO_DATA); + else + value = readl(remapped_regs + mmGPIO_DATA2); + + return value; +} + +void w100fb_gpio_write(int port, unsigned long value) +{ + if (port==W100_GPIO_PORT_A) + writel(value, remapped_regs + mmGPIO_DATA); + else + writel(value, remapped_regs + mmGPIO_DATA2); +} +EXPORT_SYMBOL(w100fb_gpio_read); +EXPORT_SYMBOL(w100fb_gpio_write); + +/* + * Initialization of critical w100 hardware + */ +static void w100_hw_init(struct w100fb_par *par) +{ + u32 temp32; + union cif_cntl_u cif_cntl; + union intf_cntl_u intf_cntl; + union cfgreg_base_u cfgreg_base; + union wrap_top_dir_u wrap_top_dir; + union cif_read_dbg_u cif_read_dbg; + union cpu_defaults_u cpu_default; + union cif_write_dbg_u cif_write_dbg; + union wrap_start_dir_u wrap_start_dir; + union cif_io_u cif_io; + struct w100_gpio_regs *gpio = par->mach->gpio; + + w100_soft_reset(); + + /* This is what the fpga_init code does on reset. May be wrong + but there is little info available */ + writel(0x31, remapped_regs + mmSCRATCH_UMSK); + for (temp32 = 0; temp32 < 10000; temp32++) + readl(remapped_regs + mmSCRATCH_UMSK); + writel(0x30, remapped_regs + mmSCRATCH_UMSK); + + /* Set up CIF */ + cif_io.val = defCIF_IO; + writel((u32)(cif_io.val), remapped_regs + mmCIF_IO); + + cif_write_dbg.val = readl(remapped_regs + mmCIF_WRITE_DBG); + cif_write_dbg.f.dis_packer_ful_during_rbbm_timeout = 0; + cif_write_dbg.f.en_dword_split_to_rbbm = 1; + cif_write_dbg.f.dis_timeout_during_rbbm = 1; + writel((u32) (cif_write_dbg.val), remapped_regs + mmCIF_WRITE_DBG); + + cif_read_dbg.val = readl(remapped_regs + mmCIF_READ_DBG); + cif_read_dbg.f.dis_rd_same_byte_to_trig_fetch = 1; + writel((u32) (cif_read_dbg.val), remapped_regs + mmCIF_READ_DBG); + + cif_cntl.val = readl(remapped_regs + mmCIF_CNTL); + cif_cntl.f.dis_system_bits = 1; + cif_cntl.f.dis_mr = 1; + cif_cntl.f.en_wait_to_compensate_dq_prop_dly = 0; + cif_cntl.f.intb_oe = 1; + cif_cntl.f.interrupt_active_high = 1; + writel((u32) (cif_cntl.val), remapped_regs + mmCIF_CNTL); + + /* Setup cfgINTF_CNTL and cfgCPU defaults */ + intf_cntl.val = defINTF_CNTL; + intf_cntl.f.ad_inc_a = 1; + intf_cntl.f.ad_inc_b = 1; + intf_cntl.f.rd_data_rdy_a = 0; + intf_cntl.f.rd_data_rdy_b = 0; + writeb((u8) (intf_cntl.val), remapped_base + cfgINTF_CNTL); + + cpu_default.val = defCPU_DEFAULTS; + cpu_default.f.access_ind_addr_a = 1; + cpu_default.f.access_ind_addr_b = 1; + cpu_default.f.access_scratch_reg = 1; + cpu_default.f.transition_size = 0; + writeb((u8) (cpu_default.val), remapped_base + cfgCPU_DEFAULTS); + + /* set up the apertures */ + writeb((u8) (W100_REG_BASE >> 16), remapped_base + cfgREG_BASE); + + cfgreg_base.val = defCFGREG_BASE; + cfgreg_base.f.cfgreg_base = W100_CFG_BASE; + writel((u32) (cfgreg_base.val), remapped_regs + mmCFGREG_BASE); + + wrap_start_dir.val = defWRAP_START_DIR; + wrap_start_dir.f.start_addr = WRAP_BUF_BASE_VALUE >> 1; + writel((u32) (wrap_start_dir.val), remapped_regs + mmWRAP_START_DIR); + + wrap_top_dir.val = defWRAP_TOP_DIR; + wrap_top_dir.f.top_addr = WRAP_BUF_TOP_VALUE >> 1; + writel((u32) (wrap_top_dir.val), remapped_regs + mmWRAP_TOP_DIR); + + writel((u32) 0x2440, remapped_regs + mmRBBM_CNTL); + + /* Set the hardware to 565 colour */ + temp32 = readl(remapped_regs + mmDISP_DEBUG2); + temp32 &= 0xff7fffff; + temp32 |= 0x00800000; + writel(temp32, remapped_regs + mmDISP_DEBUG2); + + /* Initialise the GPIO lines */ + if (gpio) { + writel(gpio->init_data1, remapped_regs + mmGPIO_DATA); + writel(gpio->init_data2, remapped_regs + mmGPIO_DATA2); + writel(gpio->gpio_dir1, remapped_regs + mmGPIO_CNTL1); + writel(gpio->gpio_oe1, remapped_regs + mmGPIO_CNTL2); + writel(gpio->gpio_dir2, remapped_regs + mmGPIO_CNTL3); + writel(gpio->gpio_oe2, remapped_regs + mmGPIO_CNTL4); + } +} + + +struct power_state { + union clk_pin_cntl_u clk_pin_cntl; + union pll_ref_fb_div_u pll_ref_fb_div; + union pll_cntl_u pll_cntl; + union sclk_cntl_u sclk_cntl; + union pclk_cntl_u pclk_cntl; + union pwrmgt_cntl_u pwrmgt_cntl; + int auto_mode; /* system clock auto changing? */ +}; + + +static struct power_state w100_pwr_state; + +/* The PLL Fout is determined by (XtalFreq/(M+1)) * ((N_int+1) + (N_fac/8)) */ + +/* 12.5MHz Crystal PLL Table */ +static struct w100_pll_info xtal_12500000[] = { + /*freq M N_int N_fac tfgoal lock_time */ + { 50, 0, 1, 0, 0xe0, 56}, /* 50.00 MHz */ + { 75, 0, 5, 0, 0xde, 37}, /* 75.00 MHz */ + {100, 0, 7, 0, 0xe0, 28}, /* 100.00 MHz */ + {125, 0, 9, 0, 0xe0, 22}, /* 125.00 MHz */ + {150, 0, 11, 0, 0xe0, 17}, /* 150.00 MHz */ + { 0, 0, 0, 0, 0, 0}, /* Terminator */ +}; + +/* 14.318MHz Crystal PLL Table */ +static struct w100_pll_info xtal_14318000[] = { + /*freq M N_int N_fac tfgoal lock_time */ + { 40, 4, 13, 0, 0xe0, 80}, /* tfgoal guessed */ + { 50, 1, 6, 0, 0xe0, 64}, /* 50.05 MHz */ + { 57, 2, 11, 0, 0xe0, 53}, /* tfgoal guessed */ + { 75, 0, 4, 3, 0xe0, 43}, /* 75.08 MHz */ + {100, 0, 6, 0, 0xe0, 32}, /* 100.10 MHz */ + { 0, 0, 0, 0, 0, 0}, +}; + +/* 16MHz Crystal PLL Table */ +static struct w100_pll_info xtal_16000000[] = { + /*freq M N_int N_fac tfgoal lock_time */ + { 72, 1, 8, 0, 0xe0, 48}, /* tfgoal guessed */ + { 80, 1, 9, 0, 0xe0, 13}, /* tfgoal guessed */ + { 95, 1, 10, 7, 0xe0, 38}, /* tfgoal guessed */ + { 96, 1, 11, 0, 0xe0, 36}, /* tfgoal guessed */ + { 0, 0, 0, 0, 0, 0}, +}; + +static struct pll_entries { + int xtal_freq; + struct w100_pll_info *pll_table; +} w100_pll_tables[] = { + { 12500000, &xtal_12500000[0] }, + { 14318000, &xtal_14318000[0] }, + { 16000000, &xtal_16000000[0] }, + { 0 }, +}; + +struct w100_pll_info *w100_get_xtal_table(unsigned int freq) +{ + struct pll_entries *pll_entry = w100_pll_tables; + + do { + if (freq == pll_entry->xtal_freq) + return pll_entry->pll_table; + pll_entry++; + } while (pll_entry->xtal_freq); + return 0; +} + + +static unsigned int w100_get_testcount(unsigned int testclk_sel) +{ + union clk_test_cntl_u clk_test_cntl; + + udelay(5); + + /* Select the test clock source and reset */ + clk_test_cntl.f.start_check_freq = 0x0; + clk_test_cntl.f.testclk_sel = testclk_sel; + clk_test_cntl.f.tstcount_rst = 0x1; /* set reset */ + writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL); + + clk_test_cntl.f.tstcount_rst = 0x0; /* clear reset */ + writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL); + + /* Run clock test */ + clk_test_cntl.f.start_check_freq = 0x1; + writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL); + + /* Give the test time to complete */ + udelay(20); + + /* Return the result */ + clk_test_cntl.val = readl(remapped_regs + mmCLK_TEST_CNTL); + clk_test_cntl.f.start_check_freq = 0x0; + writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL); + + return clk_test_cntl.f.test_count; +} + + +static int w100_pll_adjust(struct w100_pll_info *pll) +{ + unsigned int tf80; + unsigned int tf20; + + /* Initial Settings */ + w100_pwr_state.pll_cntl.f.pll_pwdn = 0x0; /* power down */ + w100_pwr_state.pll_cntl.f.pll_reset = 0x0; /* not reset */ + w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x1; /* Hi-Z */ + w100_pwr_state.pll_cntl.f.pll_pvg = 0x0; /* VCO gain = 0 */ + w100_pwr_state.pll_cntl.f.pll_vcofr = 0x0; /* VCO frequency range control = off */ + w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0; /* current offset inside VCO = 0 */ + w100_pwr_state.pll_cntl.f.pll_ring_off = 0x0; + + /* Wai Ming 80 percent of VDD 1.3V gives 1.04V, minimum operating voltage is 1.08V + * therefore, commented out the following lines + * tf80 meant tf100 + */ + do { + /* set VCO input = 0.8 * VDD */ + w100_pwr_state.pll_cntl.f.pll_dactal = 0xd; + writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL); + + tf80 = w100_get_testcount(TESTCLK_SRC_PLL); + if (tf80 >= (pll->tfgoal)) { + /* set VCO input = 0.2 * VDD */ + w100_pwr_state.pll_cntl.f.pll_dactal = 0x7; + writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL); + + tf20 = w100_get_testcount(TESTCLK_SRC_PLL); + if (tf20 <= (pll->tfgoal)) + return 1; /* Success */ + + if ((w100_pwr_state.pll_cntl.f.pll_vcofr == 0x0) && + ((w100_pwr_state.pll_cntl.f.pll_pvg == 0x7) || + (w100_pwr_state.pll_cntl.f.pll_ioffset == 0x0))) { + /* slow VCO config */ + w100_pwr_state.pll_cntl.f.pll_vcofr = 0x1; + w100_pwr_state.pll_cntl.f.pll_pvg = 0x0; + w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0; + continue; + } + } + if ((w100_pwr_state.pll_cntl.f.pll_ioffset) < 0x3) { + w100_pwr_state.pll_cntl.f.pll_ioffset += 0x1; + } else if ((w100_pwr_state.pll_cntl.f.pll_pvg) < 0x7) { + w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0; + w100_pwr_state.pll_cntl.f.pll_pvg += 0x1; + } else { + return 0; /* Error */ + } + } while(1); +} + + +/* + * w100_pll_calibration + */ +static int w100_pll_calibration(struct w100_pll_info *pll) +{ + int status; + + status = w100_pll_adjust(pll); + + /* PLL Reset And Lock */ + /* set VCO input = 0.5 * VDD */ + w100_pwr_state.pll_cntl.f.pll_dactal = 0xa; + writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL); + + udelay(1); /* reset time */ + + /* enable charge pump */ + w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x0; /* normal */ + writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL); + + /* set VCO input = Hi-Z, disable DAC */ + w100_pwr_state.pll_cntl.f.pll_dactal = 0x0; + writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL); + + udelay(400); /* lock time */ + + /* PLL locked */ + + return status; +} + + +static int w100_pll_set_clk(struct w100_pll_info *pll) +{ + int status; + + if (w100_pwr_state.auto_mode == 1) /* auto mode */ + { + w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x0; /* disable fast to normal */ + w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x0; /* disable normal to fast */ + writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL); + } + + /* Set system clock source to XTAL whilst adjusting the PLL! */ + w100_pwr_state.sclk_cntl.f.sclk_src_sel = CLK_SRC_XTAL; + writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL); + + w100_pwr_state.pll_ref_fb_div.f.pll_ref_div = pll->M; + w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_int = pll->N_int; + w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_frac = pll->N_fac; + w100_pwr_state.pll_ref_fb_div.f.pll_lock_time = pll->lock_time; + writel((u32) (w100_pwr_state.pll_ref_fb_div.val), remapped_regs + mmPLL_REF_FB_DIV); + + w100_pwr_state.pwrmgt_cntl.f.pwm_mode_req = 0; + writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL); + + status = w100_pll_calibration(pll); + + if (w100_pwr_state.auto_mode == 1) /* auto mode */ + { + w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x1; /* reenable fast to normal */ + w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x1; /* reenable normal to fast */ + writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL); + } + return status; +} + +/* freq = target frequency of the PLL */ +static int w100_set_pll_freq(struct w100fb_par *par, unsigned int freq) +{ + struct w100_pll_info *pll = par->pll_table; + + do { + if (freq == pll->freq) { + return w100_pll_set_clk(pll); + } + pll++; + } while(pll->freq); + return 0; +} + +/* Set up an initial state. Some values/fields set + here will be overwritten. */ +static void w100_pwm_setup(struct w100fb_par *par) +{ + w100_pwr_state.clk_pin_cntl.f.osc_en = 0x1; + w100_pwr_state.clk_pin_cntl.f.osc_gain = 0x1f; + w100_pwr_state.clk_pin_cntl.f.dont_use_xtalin = 0x0; + w100_pwr_state.clk_pin_cntl.f.xtalin_pm_en = 0x0; + w100_pwr_state.clk_pin_cntl.f.xtalin_dbl_en = par->mach->xtal_dbl ? 1 : 0; + w100_pwr_state.clk_pin_cntl.f.cg_debug = 0x0; + writel((u32) (w100_pwr_state.clk_pin_cntl.val), remapped_regs + mmCLK_PIN_CNTL); + + w100_pwr_state.sclk_cntl.f.sclk_src_sel = CLK_SRC_XTAL; + w100_pwr_state.sclk_cntl.f.sclk_post_div_fast = 0x0; /* Pfast = 1 */ + w100_pwr_state.sclk_cntl.f.sclk_clkon_hys = 0x3; + w100_pwr_state.sclk_cntl.f.sclk_post_div_slow = 0x0; /* Pslow = 1 */ + w100_pwr_state.sclk_cntl.f.disp_cg_ok2switch_en = 0x0; + w100_pwr_state.sclk_cntl.f.sclk_force_reg = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_disp = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_mc = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_extmc = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_cp = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_e2 = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_e3 = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_idct = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.sclk_force_bist = 0x0; /* Dynamic */ + w100_pwr_state.sclk_cntl.f.busy_extend_cp = 0x0; + w100_pwr_state.sclk_cntl.f.busy_extend_e2 = 0x0; + w100_pwr_state.sclk_cntl.f.busy_extend_e3 = 0x0; + w100_pwr_state.sclk_cntl.f.busy_extend_idct = 0x0; + writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL); + + w100_pwr_state.pclk_cntl.f.pclk_src_sel = CLK_SRC_XTAL; + w100_pwr_state.pclk_cntl.f.pclk_post_div = 0x1; /* P = 2 */ + w100_pwr_state.pclk_cntl.f.pclk_force_disp = 0x0; /* Dynamic */ + writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL); + + w100_pwr_state.pll_ref_fb_div.f.pll_ref_div = 0x0; /* M = 1 */ + w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_int = 0x0; /* N = 1.0 */ + w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_frac = 0x0; + w100_pwr_state.pll_ref_fb_div.f.pll_reset_time = 0x5; + w100_pwr_state.pll_ref_fb_div.f.pll_lock_time = 0xff; + writel((u32) (w100_pwr_state.pll_ref_fb_div.val), remapped_regs + mmPLL_REF_FB_DIV); + + w100_pwr_state.pll_cntl.f.pll_pwdn = 0x1; + w100_pwr_state.pll_cntl.f.pll_reset = 0x1; + w100_pwr_state.pll_cntl.f.pll_pm_en = 0x0; + w100_pwr_state.pll_cntl.f.pll_mode = 0x0; /* uses VCO clock */ + w100_pwr_state.pll_cntl.f.pll_refclk_sel = 0x0; + w100_pwr_state.pll_cntl.f.pll_fbclk_sel = 0x0; + w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x0; + w100_pwr_state.pll_cntl.f.pll_pcp = 0x4; + w100_pwr_state.pll_cntl.f.pll_pvg = 0x0; + w100_pwr_state.pll_cntl.f.pll_vcofr = 0x0; + w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0; + w100_pwr_state.pll_cntl.f.pll_pecc_mode = 0x0; + w100_pwr_state.pll_cntl.f.pll_pecc_scon = 0x0; + w100_pwr_state.pll_cntl.f.pll_dactal = 0x0; /* Hi-Z */ + w100_pwr_state.pll_cntl.f.pll_cp_clip = 0x3; + w100_pwr_state.pll_cntl.f.pll_conf = 0x2; + w100_pwr_state.pll_cntl.f.pll_mbctrl = 0x2; + w100_pwr_state.pll_cntl.f.pll_ring_off = 0x0; + writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL); + + w100_pwr_state.pwrmgt_cntl.f.pwm_enable = 0x0; + w100_pwr_state.pwrmgt_cntl.f.pwm_mode_req = 0x1; /* normal mode (0, 1, 3) */ + w100_pwr_state.pwrmgt_cntl.f.pwm_wakeup_cond = 0x0; + w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x0; + w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x0; + w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_cond = 0x1; /* PM4,ENG */ + w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_cond = 0x1; /* PM4,ENG */ + w100_pwr_state.pwrmgt_cntl.f.pwm_idle_timer = 0xFF; + w100_pwr_state.pwrmgt_cntl.f.pwm_busy_timer = 0xFF; + writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL); + + w100_pwr_state.auto_mode = 0; /* manual mode */ +} + + +/* + * Setup the w100 clocks for the specified mode + */ +static void w100_init_clocks(struct w100fb_par *par) +{ + struct w100_mode *mode = par->mode; + + if (mode->pixclk_src == CLK_SRC_PLL || mode->sysclk_src == CLK_SRC_PLL) + w100_set_pll_freq(par, (par->fastpll_mode && mode->fast_pll_freq) ? mode->fast_pll_freq : mode->pll_freq); + + w100_pwr_state.sclk_cntl.f.sclk_src_sel = mode->sysclk_src; + w100_pwr_state.sclk_cntl.f.sclk_post_div_fast = mode->sysclk_divider; + w100_pwr_state.sclk_cntl.f.sclk_post_div_slow = mode->sysclk_divider; + writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL); +} + +static void w100_init_lcd(struct w100fb_par *par) +{ + u32 temp32; + struct w100_mode *mode = par->mode; + struct w100_gen_regs *regs = par->mach->regs; + union active_h_disp_u active_h_disp; + union active_v_disp_u active_v_disp; + union graphic_h_disp_u graphic_h_disp; + union graphic_v_disp_u graphic_v_disp; + union crtc_total_u crtc_total; + + /* w3200 doesn't like undefined bits being set so zero register values first */ + + active_h_disp.val = 0; + active_h_disp.f.active_h_start=mode->left_margin; + active_h_disp.f.active_h_end=mode->left_margin + mode->xres; + writel(active_h_disp.val, remapped_regs + mmACTIVE_H_DISP); + + active_v_disp.val = 0; + active_v_disp.f.active_v_start=mode->upper_margin; + active_v_disp.f.active_v_end=mode->upper_margin + mode->yres; + writel(active_v_disp.val, remapped_regs + mmACTIVE_V_DISP); + + graphic_h_disp.val = 0; + graphic_h_disp.f.graphic_h_start=mode->left_margin; + graphic_h_disp.f.graphic_h_end=mode->left_margin + mode->xres; + writel(graphic_h_disp.val, remapped_regs + mmGRAPHIC_H_DISP); + + graphic_v_disp.val = 0; + graphic_v_disp.f.graphic_v_start=mode->upper_margin; + graphic_v_disp.f.graphic_v_end=mode->upper_margin + mode->yres; + writel(graphic_v_disp.val, remapped_regs + mmGRAPHIC_V_DISP); + + crtc_total.val = 0; + crtc_total.f.crtc_h_total=mode->left_margin + mode->xres + mode->right_margin; + crtc_total.f.crtc_v_total=mode->upper_margin + mode->yres + mode->lower_margin; + writel(crtc_total.val, remapped_regs + mmCRTC_TOTAL); + + writel(mode->crtc_ss, remapped_regs + mmCRTC_SS); + writel(mode->crtc_ls, remapped_regs + mmCRTC_LS); + writel(mode->crtc_gs, remapped_regs + mmCRTC_GS); + writel(mode->crtc_vpos_gs, remapped_regs + mmCRTC_VPOS_GS); + writel(mode->crtc_rev, remapped_regs + mmCRTC_REV); + writel(mode->crtc_dclk, remapped_regs + mmCRTC_DCLK); + writel(mode->crtc_gclk, remapped_regs + mmCRTC_GCLK); + writel(mode->crtc_goe, remapped_regs + mmCRTC_GOE); + writel(mode->crtc_ps1_active, remapped_regs + mmCRTC_PS1_ACTIVE); + + writel(regs->lcd_format, remapped_regs + mmLCD_FORMAT); + writel(regs->lcdd_cntl1, remapped_regs + mmLCDD_CNTL1); + writel(regs->lcdd_cntl2, remapped_regs + mmLCDD_CNTL2); + writel(regs->genlcd_cntl1, remapped_regs + mmGENLCD_CNTL1); + writel(regs->genlcd_cntl2, remapped_regs + mmGENLCD_CNTL2); + writel(regs->genlcd_cntl3, remapped_regs + mmGENLCD_CNTL3); + + writel(0x00000000, remapped_regs + mmCRTC_FRAME); + writel(0x00000000, remapped_regs + mmCRTC_FRAME_VPOS); + writel(0x00000000, remapped_regs + mmCRTC_DEFAULT_COUNT); + writel(0x0000FF00, remapped_regs + mmLCD_BACKGROUND_COLOR); + + /* Hack for overlay in ext memory */ + temp32 = readl(remapped_regs + mmDISP_DEBUG2); + temp32 |= 0xc0000000; + writel(temp32, remapped_regs + mmDISP_DEBUG2); +} + + +static void w100_setup_memory(struct w100fb_par *par) +{ + union mc_ext_mem_location_u extmem_location; + union mc_fb_location_u intmem_location; + struct w100_mem_info *mem = par->mach->mem; + struct w100_bm_mem_info *bm_mem = par->mach->bm_mem; + + if (!par->extmem_active) { + w100_suspend(W100_SUSPEND_EXTMEM); + + /* Map Internal Memory at FB Base */ + intmem_location.f.mc_fb_start = W100_FB_BASE >> 8; + intmem_location.f.mc_fb_top = (W100_FB_BASE+MEM_INT_SIZE) >> 8; + writel((u32) (intmem_location.val), remapped_regs + mmMC_FB_LOCATION); + + /* Unmap External Memory - value is *probably* irrelevant but may have meaning + to acceleration libraries */ + extmem_location.f.mc_ext_mem_start = MEM_EXT_BASE_VALUE >> 8; + extmem_location.f.mc_ext_mem_top = (MEM_EXT_BASE_VALUE-1) >> 8; + writel((u32) (extmem_location.val), remapped_regs + mmMC_EXT_MEM_LOCATION); + } else { + /* Map Internal Memory to its default location */ + intmem_location.f.mc_fb_start = MEM_INT_BASE_VALUE >> 8; + intmem_location.f.mc_fb_top = (MEM_INT_BASE_VALUE+MEM_INT_SIZE) >> 8; + writel((u32) (intmem_location.val), remapped_regs + mmMC_FB_LOCATION); + + /* Map External Memory at FB Base */ + extmem_location.f.mc_ext_mem_start = W100_FB_BASE >> 8; + extmem_location.f.mc_ext_mem_top = (W100_FB_BASE+par->mach->mem->size) >> 8; + writel((u32) (extmem_location.val), remapped_regs + mmMC_EXT_MEM_LOCATION); + + writel(0x00007800, remapped_regs + mmMC_BIST_CTRL); + writel(mem->ext_cntl, remapped_regs + mmMEM_EXT_CNTL); + writel(0x00200021, remapped_regs + mmMEM_SDRAM_MODE_REG); + udelay(100); + writel(0x80200021, remapped_regs + mmMEM_SDRAM_MODE_REG); + udelay(100); + writel(mem->sdram_mode_reg, remapped_regs + mmMEM_SDRAM_MODE_REG); + udelay(100); + writel(mem->ext_timing_cntl, remapped_regs + mmMEM_EXT_TIMING_CNTL); + writel(mem->io_cntl, remapped_regs + mmMEM_IO_CNTL); + if (bm_mem) { + writel(bm_mem->ext_mem_bw, remapped_regs + mmBM_EXT_MEM_BANDWIDTH); + writel(bm_mem->offset, remapped_regs + mmBM_OFFSET); + writel(bm_mem->ext_timing_ctl, remapped_regs + mmBM_MEM_EXT_TIMING_CNTL); + writel(bm_mem->ext_cntl, remapped_regs + mmBM_MEM_EXT_CNTL); + writel(bm_mem->mode_reg, remapped_regs + mmBM_MEM_MODE_REG); + writel(bm_mem->io_cntl, remapped_regs + mmBM_MEM_IO_CNTL); + writel(bm_mem->config, remapped_regs + mmBM_CONFIG); + } + } +} + +static void w100_set_dispregs(struct w100fb_par *par) +{ + unsigned long rot=0, divider, offset=0; + union graphic_ctrl_u graphic_ctrl; + + /* See if the mode has been rotated */ + if (par->xres == par->mode->xres) { + if (par->flip) { + rot=3; /* 180 degree */ + offset=(par->xres * par->yres) - 1; + } /* else 0 degree */ + divider = par->mode->pixclk_divider; + } else { + if (par->flip) { + rot=2; /* 270 degree */ + offset=par->xres - 1; + } else { + rot=1; /* 90 degree */ + offset=par->xres * (par->yres - 1); + } + divider = par->mode->pixclk_divider_rotated; + } + + graphic_ctrl.val = 0; /* w32xx doesn't like undefined bits */ + switch (par->chip_id) { + case CHIP_ID_W100: + graphic_ctrl.f_w100.color_depth=6; + graphic_ctrl.f_w100.en_crtc=1; + graphic_ctrl.f_w100.en_graphic_req=1; + graphic_ctrl.f_w100.en_graphic_crtc=1; + graphic_ctrl.f_w100.lcd_pclk_on=1; + graphic_ctrl.f_w100.lcd_sclk_on=1; + graphic_ctrl.f_w100.low_power_on=0; + graphic_ctrl.f_w100.req_freq=0; + graphic_ctrl.f_w100.portrait_mode=rot; + + /* Zaurus needs this */ + switch(par->xres) { + case 240: + case 320: + default: + graphic_ctrl.f_w100.total_req_graphic=0xa0; + break; + case 480: + case 640: + switch(rot) { + case 0: /* 0 */ + case 3: /* 180 */ + graphic_ctrl.f_w100.low_power_on=1; + graphic_ctrl.f_w100.req_freq=5; + break; + case 1: /* 90 */ + case 2: /* 270 */ + graphic_ctrl.f_w100.req_freq=4; + break; + default: + break; + } + graphic_ctrl.f_w100.total_req_graphic=0xf0; + break; + } + break; + case CHIP_ID_W3200: + case CHIP_ID_W3220: + graphic_ctrl.f_w32xx.color_depth=6; + graphic_ctrl.f_w32xx.en_crtc=1; + graphic_ctrl.f_w32xx.en_graphic_req=1; + graphic_ctrl.f_w32xx.en_graphic_crtc=1; + graphic_ctrl.f_w32xx.lcd_pclk_on=1; + graphic_ctrl.f_w32xx.lcd_sclk_on=1; + graphic_ctrl.f_w32xx.low_power_on=0; + graphic_ctrl.f_w32xx.req_freq=0; + graphic_ctrl.f_w32xx.total_req_graphic=par->mode->xres >> 1; /* panel xres, not mode */ + graphic_ctrl.f_w32xx.portrait_mode=rot; + break; + } + + /* Set the pixel clock source and divider */ + w100_pwr_state.pclk_cntl.f.pclk_src_sel = par->mode->pixclk_src; + w100_pwr_state.pclk_cntl.f.pclk_post_div = divider; + writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL); + + writel(graphic_ctrl.val, remapped_regs + mmGRAPHIC_CTRL); + writel(W100_FB_BASE + ((offset * BITS_PER_PIXEL/8)&~0x03UL), remapped_regs + mmGRAPHIC_OFFSET); + writel((par->xres*BITS_PER_PIXEL/8), remapped_regs + mmGRAPHIC_PITCH); +} + + +/* + * Work out how long the sync pulse lasts + * Value is 1/(time in seconds) + */ +static void calc_hsync(struct w100fb_par *par) +{ + unsigned long hsync; + struct w100_mode *mode = par->mode; + union crtc_ss_u crtc_ss; + + if (mode->pixclk_src == CLK_SRC_XTAL) + hsync=par->mach->xtal_freq; + else + hsync=((par->fastpll_mode && mode->fast_pll_freq) ? mode->fast_pll_freq : mode->pll_freq)*100000; + + hsync /= (w100_pwr_state.pclk_cntl.f.pclk_post_div + 1); + + crtc_ss.val = readl(remapped_regs + mmCRTC_SS); + if (crtc_ss.val) + par->hsync_len = hsync / (crtc_ss.f.ss_end-crtc_ss.f.ss_start); + else + par->hsync_len = 0; +} + +static void w100_suspend(u32 mode) +{ + u32 val; + + writel(0x7FFF8000, remapped_regs + mmMC_EXT_MEM_LOCATION); + writel(0x00FF0000, remapped_regs + mmMC_PERF_MON_CNTL); + + val = readl(remapped_regs + mmMEM_EXT_TIMING_CNTL); + val &= ~(0x00100000); /* bit20=0 */ + val |= 0xFF000000; /* bit31:24=0xff */ + writel(val, remapped_regs + mmMEM_EXT_TIMING_CNTL); + + val = readl(remapped_regs + mmMEM_EXT_CNTL); + val &= ~(0x00040000); /* bit18=0 */ + val |= 0x00080000; /* bit19=1 */ + writel(val, remapped_regs + mmMEM_EXT_CNTL); + + udelay(1); /* wait 1us */ + + if (mode == W100_SUSPEND_EXTMEM) { + /* CKE: Tri-State */ + val = readl(remapped_regs + mmMEM_EXT_CNTL); + val |= 0x40000000; /* bit30=1 */ + writel(val, remapped_regs + mmMEM_EXT_CNTL); + + /* CLK: Stop */ + val = readl(remapped_regs + mmMEM_EXT_CNTL); + val &= ~(0x00000001); /* bit0=0 */ + writel(val, remapped_regs + mmMEM_EXT_CNTL); + } else { + writel(0x00000000, remapped_regs + mmSCLK_CNTL); + writel(0x000000BF, remapped_regs + mmCLK_PIN_CNTL); + writel(0x00000015, remapped_regs + mmPWRMGT_CNTL); + + udelay(5); + + val = readl(remapped_regs + mmPLL_CNTL); + val |= 0x00000004; /* bit2=1 */ + writel(val, remapped_regs + mmPLL_CNTL); + + writel(0x00000000, remapped_regs + mmLCDD_CNTL1); + writel(0x00000000, remapped_regs + mmLCDD_CNTL2); + writel(0x00000000, remapped_regs + mmGENLCD_CNTL1); + writel(0x00000000, remapped_regs + mmGENLCD_CNTL2); + writel(0x00000000, remapped_regs + mmGENLCD_CNTL3); + + val = readl(remapped_regs + mmMEM_EXT_CNTL); + val |= 0xF0000000; + val &= ~(0x00000001); + writel(val, remapped_regs + mmMEM_EXT_CNTL); + + writel(0x0000001d, remapped_regs + mmPWRMGT_CNTL); + } +} + +static void w100_vsync(void) +{ + u32 tmp; + int timeout = 30000; /* VSync timeout = 30[ms] > 16.8[ms] */ + + tmp = readl(remapped_regs + mmACTIVE_V_DISP); + + /* set vline pos */ + writel((tmp >> 16) & 0x3ff, remapped_regs + mmDISP_INT_CNTL); + + /* disable vline irq */ + tmp = readl(remapped_regs + mmGEN_INT_CNTL); + + tmp &= ~0x00000002; + writel(tmp, remapped_regs + mmGEN_INT_CNTL); + + /* clear vline irq status */ + writel(0x00000002, remapped_regs + mmGEN_INT_STATUS); + + /* enable vline irq */ + writel((tmp | 0x00000002), remapped_regs + mmGEN_INT_CNTL); + + /* clear vline irq status */ + writel(0x00000002, remapped_regs + mmGEN_INT_STATUS); + + while(timeout > 0) { + if (readl(remapped_regs + mmGEN_INT_STATUS) & 0x00000002) + break; + udelay(1); + timeout--; + } + + /* disable vline irq */ + writel(tmp, remapped_regs + mmGEN_INT_CNTL); + + /* clear vline irq status */ + writel(0x00000002, remapped_regs + mmGEN_INT_STATUS); +} + +static struct platform_driver w100fb_driver = { + .probe = w100fb_probe, + .remove = w100fb_remove, + .suspend = w100fb_suspend, + .resume = w100fb_resume, + .driver = { + .name = "w100fb", + }, +}; + +module_platform_driver(w100fb_driver); + +MODULE_DESCRIPTION("ATI Imageon w100 framebuffer driver"); +MODULE_LICENSE("GPL"); |