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path: root/drivers/video/fbdev/w100fb.c
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-rw-r--r--drivers/video/fbdev/w100fb.c1637
1 files changed, 1637 insertions, 0 deletions
diff --git a/drivers/video/fbdev/w100fb.c b/drivers/video/fbdev/w100fb.c
new file mode 100644
index 000000000000..10951c82f6ed
--- /dev/null
+++ b/drivers/video/fbdev/w100fb.c
@@ -0,0 +1,1637 @@
+/*
+ * 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 <asm/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(flip, 0644, flip_show, flip_store);
+
+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", &regs, &param);
+
+ 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(fastpllclk, 0644, fastpllclk_show, fastpllclk_store);
+
+/*
+ * 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);
+ }
+ 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);
+ }
+}
+
+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(sizeof (u32) * MAX_PALETTES, 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);
+ if (remapped_regs != NULL)
+ iounmap(remapped_regs);
+ if (remapped_base != NULL)
+ iounmap(remapped_base);
+ 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);
+ iounmap(remapped_regs);
+ iounmap(remapped_fbuf);
+
+ 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");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-03 10:08:36 +0100