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authorTomi Valkeinen <tomi.valkeinen@ti.com>2014-02-13 15:31:38 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2014-04-17 08:10:19 +0300
commitf7018c21350204c4cf628462f229d44d03545254 (patch)
tree408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/acornfb.c
parentc26ef3eb3c11274bad1b64498d0a134f85755250 (diff)
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related files, directories for backlight, console, linux logo, lots of fbdev device drivers, fbdev framework files. Make some order into the chaos by creating drivers/video/fbdev directory, and move all fbdev related files there. No functionality is changed, although I guess it is possible that some subtle Makefile build order related issue could be created by this patch. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Rob Clark <robdclark@gmail.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/acornfb.c')
-rw-r--r--drivers/video/acornfb.c1143
1 files changed, 0 insertions, 1143 deletions
diff --git a/drivers/video/acornfb.c b/drivers/video/acornfb.c
deleted file mode 100644
index a305caea58ee..000000000000
--- a/drivers/video/acornfb.c
+++ /dev/null
@@ -1,1143 +0,0 @@
-/*
- * linux/drivers/video/acornfb.c
- *
- * Copyright (C) 1998-2001 Russell King
- *
- * 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.
- *
- * Frame buffer code for Acorn platforms
- *
- * NOTE: Most of the modes with X!=640 will disappear shortly.
- * NOTE: Startup setting of HS & VS polarity not supported.
- * (do we need to support it if we're coming up in 640x480?)
- *
- * FIXME: (things broken by the "new improved" FBCON API)
- * - Blanking 8bpp displays with VIDC
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/ctype.h>
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/fb.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/io.h>
-#include <linux/gfp.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-#include <asm/mach-types.h>
-#include <asm/pgtable.h>
-
-#include "acornfb.h"
-
-/*
- * Default resolution.
- * NOTE that it has to be supported in the table towards
- * the end of this file.
- */
-#define DEFAULT_XRES 640
-#define DEFAULT_YRES 480
-#define DEFAULT_BPP 4
-
-/*
- * define this to debug the video mode selection
- */
-#undef DEBUG_MODE_SELECTION
-
-/*
- * Translation from RISC OS monitor types to actual
- * HSYNC and VSYNC frequency ranges. These are
- * probably not right, but they're the best info I
- * have. Allow 1% either way on the nominal for TVs.
- */
-#define NR_MONTYPES 6
-static struct fb_monspecs monspecs[NR_MONTYPES] = {
- { /* TV */
- .hfmin = 15469,
- .hfmax = 15781,
- .vfmin = 49,
- .vfmax = 51,
- }, { /* Multi Freq */
- .hfmin = 0,
- .hfmax = 99999,
- .vfmin = 0,
- .vfmax = 199,
- }, { /* Hi-res mono */
- .hfmin = 58608,
- .hfmax = 58608,
- .vfmin = 64,
- .vfmax = 64,
- }, { /* VGA */
- .hfmin = 30000,
- .hfmax = 70000,
- .vfmin = 60,
- .vfmax = 60,
- }, { /* SVGA */
- .hfmin = 30000,
- .hfmax = 70000,
- .vfmin = 56,
- .vfmax = 75,
- }, {
- .hfmin = 30000,
- .hfmax = 70000,
- .vfmin = 60,
- .vfmax = 60,
- }
-};
-
-static struct fb_info fb_info;
-static struct acornfb_par current_par;
-static struct vidc_timing current_vidc;
-
-extern unsigned int vram_size; /* set by setup.c */
-
-#ifdef HAS_VIDC20
-#include <mach/acornfb.h>
-
-#define MAX_SIZE 2*1024*1024
-
-/* VIDC20 has a different set of rules from the VIDC:
- * hcr : must be multiple of 4
- * hswr : must be even
- * hdsr : must be even
- * hder : must be even
- * vcr : >= 2, (interlace, must be odd)
- * vswr : >= 1
- * vdsr : >= 1
- * vder : >= vdsr
- */
-static void acornfb_set_timing(struct fb_info *info)
-{
- struct fb_var_screeninfo *var = &info->var;
- struct vidc_timing vidc;
- u_int vcr, fsize;
- u_int ext_ctl, dat_ctl;
- u_int words_per_line;
-
- memset(&vidc, 0, sizeof(vidc));
-
- vidc.h_sync_width = var->hsync_len - 8;
- vidc.h_border_start = vidc.h_sync_width + var->left_margin + 8 - 12;
- vidc.h_display_start = vidc.h_border_start + 12 - 18;
- vidc.h_display_end = vidc.h_display_start + var->xres;
- vidc.h_border_end = vidc.h_display_end + 18 - 12;
- vidc.h_cycle = vidc.h_border_end + var->right_margin + 12 - 8;
- vidc.h_interlace = vidc.h_cycle / 2;
- vidc.v_sync_width = var->vsync_len - 1;
- vidc.v_border_start = vidc.v_sync_width + var->upper_margin;
- vidc.v_display_start = vidc.v_border_start;
- vidc.v_display_end = vidc.v_display_start + var->yres;
- vidc.v_border_end = vidc.v_display_end;
- vidc.control = acornfb_default_control();
-
- vcr = var->vsync_len + var->upper_margin + var->yres +
- var->lower_margin;
-
- if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
- vidc.v_cycle = (vcr - 3) / 2;
- vidc.control |= VIDC20_CTRL_INT;
- } else
- vidc.v_cycle = vcr - 2;
-
- switch (var->bits_per_pixel) {
- case 1: vidc.control |= VIDC20_CTRL_1BPP; break;
- case 2: vidc.control |= VIDC20_CTRL_2BPP; break;
- case 4: vidc.control |= VIDC20_CTRL_4BPP; break;
- default:
- case 8: vidc.control |= VIDC20_CTRL_8BPP; break;
- case 16: vidc.control |= VIDC20_CTRL_16BPP; break;
- case 32: vidc.control |= VIDC20_CTRL_32BPP; break;
- }
-
- acornfb_vidc20_find_rates(&vidc, var);
- fsize = var->vsync_len + var->upper_margin + var->lower_margin - 1;
-
- if (memcmp(&current_vidc, &vidc, sizeof(vidc))) {
- current_vidc = vidc;
-
- vidc_writel(VIDC20_CTRL| vidc.control);
- vidc_writel(0xd0000000 | vidc.pll_ctl);
- vidc_writel(0x80000000 | vidc.h_cycle);
- vidc_writel(0x81000000 | vidc.h_sync_width);
- vidc_writel(0x82000000 | vidc.h_border_start);
- vidc_writel(0x83000000 | vidc.h_display_start);
- vidc_writel(0x84000000 | vidc.h_display_end);
- vidc_writel(0x85000000 | vidc.h_border_end);
- vidc_writel(0x86000000);
- vidc_writel(0x87000000 | vidc.h_interlace);
- vidc_writel(0x90000000 | vidc.v_cycle);
- vidc_writel(0x91000000 | vidc.v_sync_width);
- vidc_writel(0x92000000 | vidc.v_border_start);
- vidc_writel(0x93000000 | vidc.v_display_start);
- vidc_writel(0x94000000 | vidc.v_display_end);
- vidc_writel(0x95000000 | vidc.v_border_end);
- vidc_writel(0x96000000);
- vidc_writel(0x97000000);
- }
-
- iomd_writel(fsize, IOMD_FSIZE);
-
- ext_ctl = acornfb_default_econtrol();
-
- if (var->sync & FB_SYNC_COMP_HIGH_ACT) /* should be FB_SYNC_COMP */
- ext_ctl |= VIDC20_ECTL_HS_NCSYNC | VIDC20_ECTL_VS_NCSYNC;
- else {
- if (var->sync & FB_SYNC_HOR_HIGH_ACT)
- ext_ctl |= VIDC20_ECTL_HS_HSYNC;
- else
- ext_ctl |= VIDC20_ECTL_HS_NHSYNC;
-
- if (var->sync & FB_SYNC_VERT_HIGH_ACT)
- ext_ctl |= VIDC20_ECTL_VS_VSYNC;
- else
- ext_ctl |= VIDC20_ECTL_VS_NVSYNC;
- }
-
- vidc_writel(VIDC20_ECTL | ext_ctl);
-
- words_per_line = var->xres * var->bits_per_pixel / 32;
-
- if (current_par.using_vram && info->fix.smem_len == 2048*1024)
- words_per_line /= 2;
-
- /* RiscPC doesn't use the VIDC's VRAM control. */
- dat_ctl = VIDC20_DCTL_VRAM_DIS | VIDC20_DCTL_SNA | words_per_line;
-
- /* The data bus width is dependent on both the type
- * and amount of video memory.
- * DRAM 32bit low
- * 1MB VRAM 32bit
- * 2MB VRAM 64bit
- */
- if (current_par.using_vram && current_par.vram_half_sam == 2048)
- dat_ctl |= VIDC20_DCTL_BUS_D63_0;
- else
- dat_ctl |= VIDC20_DCTL_BUS_D31_0;
-
- vidc_writel(VIDC20_DCTL | dat_ctl);
-
-#ifdef DEBUG_MODE_SELECTION
- printk(KERN_DEBUG "VIDC registers for %dx%dx%d:\n", var->xres,
- var->yres, var->bits_per_pixel);
- printk(KERN_DEBUG " H-cycle : %d\n", vidc.h_cycle);
- printk(KERN_DEBUG " H-sync-width : %d\n", vidc.h_sync_width);
- printk(KERN_DEBUG " H-border-start : %d\n", vidc.h_border_start);
- printk(KERN_DEBUG " H-display-start : %d\n", vidc.h_display_start);
- printk(KERN_DEBUG " H-display-end : %d\n", vidc.h_display_end);
- printk(KERN_DEBUG " H-border-end : %d\n", vidc.h_border_end);
- printk(KERN_DEBUG " H-interlace : %d\n", vidc.h_interlace);
- printk(KERN_DEBUG " V-cycle : %d\n", vidc.v_cycle);
- printk(KERN_DEBUG " V-sync-width : %d\n", vidc.v_sync_width);
- printk(KERN_DEBUG " V-border-start : %d\n", vidc.v_border_start);
- printk(KERN_DEBUG " V-display-start : %d\n", vidc.v_display_start);
- printk(KERN_DEBUG " V-display-end : %d\n", vidc.v_display_end);
- printk(KERN_DEBUG " V-border-end : %d\n", vidc.v_border_end);
- printk(KERN_DEBUG " Ext Ctrl (C) : 0x%08X\n", ext_ctl);
- printk(KERN_DEBUG " PLL Ctrl (D) : 0x%08X\n", vidc.pll_ctl);
- printk(KERN_DEBUG " Ctrl (E) : 0x%08X\n", vidc.control);
- printk(KERN_DEBUG " Data Ctrl (F) : 0x%08X\n", dat_ctl);
- printk(KERN_DEBUG " Fsize : 0x%08X\n", fsize);
-#endif
-}
-
-/*
- * We have to take note of the VIDC20's 16-bit palette here.
- * The VIDC20 looks up a 16 bit pixel as follows:
- *
- * bits 111111
- * 5432109876543210
- * red ++++++++ (8 bits, 7 to 0)
- * green ++++++++ (8 bits, 11 to 4)
- * blue ++++++++ (8 bits, 15 to 8)
- *
- * We use a pixel which looks like:
- *
- * bits 111111
- * 5432109876543210
- * red +++++ (5 bits, 4 to 0)
- * green +++++ (5 bits, 9 to 5)
- * blue +++++ (5 bits, 14 to 10)
- */
-static int
-acornfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
- u_int trans, struct fb_info *info)
-{
- union palette pal;
-
- if (regno >= current_par.palette_size)
- return 1;
-
- if (regno < 16 && info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
- u32 pseudo_val;
-
- pseudo_val = regno << info->var.red.offset;
- pseudo_val |= regno << info->var.green.offset;
- pseudo_val |= regno << info->var.blue.offset;
-
- ((u32 *)info->pseudo_palette)[regno] = pseudo_val;
- }
-
- pal.p = 0;
- pal.vidc20.red = red >> 8;
- pal.vidc20.green = green >> 8;
- pal.vidc20.blue = blue >> 8;
-
- current_par.palette[regno] = pal;
-
- if (info->var.bits_per_pixel == 16) {
- int i;
-
- pal.p = 0;
- vidc_writel(0x10000000);
- for (i = 0; i < 256; i += 1) {
- pal.vidc20.red = current_par.palette[ i & 31].vidc20.red;
- pal.vidc20.green = current_par.palette[(i >> 1) & 31].vidc20.green;
- pal.vidc20.blue = current_par.palette[(i >> 2) & 31].vidc20.blue;
- vidc_writel(pal.p);
- /* Palette register pointer auto-increments */
- }
- } else {
- vidc_writel(0x10000000 | regno);
- vidc_writel(pal.p);
- }
-
- return 0;
-}
-#endif
-
-/*
- * Before selecting the timing parameters, adjust
- * the resolution to fit the rules.
- */
-static int
-acornfb_adjust_timing(struct fb_info *info, struct fb_var_screeninfo *var, u_int fontht)
-{
- u_int font_line_len, sam_size, min_size, size, nr_y;
-
- /* xres must be even */
- var->xres = (var->xres + 1) & ~1;
-
- /*
- * We don't allow xres_virtual to differ from xres
- */
- var->xres_virtual = var->xres;
- var->xoffset = 0;
-
- if (current_par.using_vram)
- sam_size = current_par.vram_half_sam * 2;
- else
- sam_size = 16;
-
- /*
- * Now, find a value for yres_virtual which allows
- * us to do ywrap scrolling. The value of
- * yres_virtual must be such that the end of the
- * displayable frame buffer must be aligned with
- * the start of a font line.
- */
- font_line_len = var->xres * var->bits_per_pixel * fontht / 8;
- min_size = var->xres * var->yres * var->bits_per_pixel / 8;
-
- /*
- * If minimum screen size is greater than that we have
- * available, reject it.
- */
- if (min_size > info->fix.smem_len)
- return -EINVAL;
-
- /* Find int 'y', such that y * fll == s * sam < maxsize
- * y = s * sam / fll; s = maxsize / sam
- */
- for (size = info->fix.smem_len;
- nr_y = size / font_line_len, min_size <= size;
- size -= sam_size) {
- if (nr_y * font_line_len == size)
- break;
- }
- nr_y *= fontht;
-
- if (var->accel_flags & FB_ACCELF_TEXT) {
- if (min_size > size) {
- /*
- * failed, use ypan
- */
- size = info->fix.smem_len;
- var->yres_virtual = size / (font_line_len / fontht);
- } else
- var->yres_virtual = nr_y;
- } else if (var->yres_virtual > nr_y)
- var->yres_virtual = nr_y;
-
- current_par.screen_end = info->fix.smem_start + size;
-
- /*
- * Fix yres & yoffset if needed.
- */
- if (var->yres > var->yres_virtual)
- var->yres = var->yres_virtual;
-
- if (var->vmode & FB_VMODE_YWRAP) {
- if (var->yoffset > var->yres_virtual)
- var->yoffset = var->yres_virtual;
- } else {
- if (var->yoffset + var->yres > var->yres_virtual)
- var->yoffset = var->yres_virtual - var->yres;
- }
-
- /* hsync_len must be even */
- var->hsync_len = (var->hsync_len + 1) & ~1;
-
-#if defined(HAS_VIDC20)
- /* left_margin must be even */
- if (var->left_margin & 1) {
- var->left_margin += 1;
- var->right_margin -= 1;
- }
-
- /* right_margin must be even */
- if (var->right_margin & 1)
- var->right_margin += 1;
-#endif
-
- if (var->vsync_len < 1)
- var->vsync_len = 1;
-
- return 0;
-}
-
-static int
-acornfb_validate_timing(struct fb_var_screeninfo *var,
- struct fb_monspecs *monspecs)
-{
- unsigned long hs, vs;
-
- /*
- * hs(Hz) = 10^12 / (pixclock * xtotal)
- * vs(Hz) = hs(Hz) / ytotal
- *
- * No need to do long long divisions or anything
- * like that if you factor it correctly
- */
- hs = 1953125000 / var->pixclock;
- hs = hs * 512 /
- (var->xres + var->left_margin + var->right_margin + var->hsync_len);
- vs = hs /
- (var->yres + var->upper_margin + var->lower_margin + var->vsync_len);
-
- return (vs >= monspecs->vfmin && vs <= monspecs->vfmax &&
- hs >= monspecs->hfmin && hs <= monspecs->hfmax) ? 0 : -EINVAL;
-}
-
-static inline void
-acornfb_update_dma(struct fb_info *info, struct fb_var_screeninfo *var)
-{
- u_int off = var->yoffset * info->fix.line_length;
-
-#if defined(HAS_MEMC)
- memc_write(VDMA_INIT, off >> 2);
-#elif defined(HAS_IOMD)
- iomd_writel(info->fix.smem_start + off, IOMD_VIDINIT);
-#endif
-}
-
-static int
-acornfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
-{
- u_int fontht;
- int err;
-
- /*
- * FIXME: Find the font height
- */
- fontht = 8;
-
- var->red.msb_right = 0;
- var->green.msb_right = 0;
- var->blue.msb_right = 0;
- var->transp.msb_right = 0;
-
- switch (var->bits_per_pixel) {
- case 1: case 2: case 4: case 8:
- var->red.offset = 0;
- var->red.length = var->bits_per_pixel;
- var->green = var->red;
- var->blue = var->red;
- var->transp.offset = 0;
- var->transp.length = 0;
- break;
-
-#ifdef HAS_VIDC20
- case 16:
- var->red.offset = 0;
- var->red.length = 5;
- var->green.offset = 5;
- var->green.length = 5;
- var->blue.offset = 10;
- var->blue.length = 5;
- var->transp.offset = 15;
- var->transp.length = 1;
- break;
-
- case 32:
- var->red.offset = 0;
- var->red.length = 8;
- var->green.offset = 8;
- var->green.length = 8;
- var->blue.offset = 16;
- var->blue.length = 8;
- var->transp.offset = 24;
- var->transp.length = 4;
- break;
-#endif
- default:
- return -EINVAL;
- }
-
- /*
- * Check to see if the pixel rate is valid.
- */
- if (!acornfb_valid_pixrate(var))
- return -EINVAL;
-
- /*
- * Validate and adjust the resolution to
- * match the video generator hardware.
- */
- err = acornfb_adjust_timing(info, var, fontht);
- if (err)
- return err;
-
- /*
- * Validate the timing against the
- * monitor hardware.
- */
- return acornfb_validate_timing(var, &info->monspecs);
-}
-
-static int acornfb_set_par(struct fb_info *info)
-{
- switch (info->var.bits_per_pixel) {
- case 1:
- current_par.palette_size = 2;
- info->fix.visual = FB_VISUAL_MONO10;
- break;
- case 2:
- current_par.palette_size = 4;
- info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
- break;
- case 4:
- current_par.palette_size = 16;
- info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
- break;
- case 8:
- current_par.palette_size = VIDC_PALETTE_SIZE;
- info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
- break;
-#ifdef HAS_VIDC20
- case 16:
- current_par.palette_size = 32;
- info->fix.visual = FB_VISUAL_DIRECTCOLOR;
- break;
- case 32:
- current_par.palette_size = VIDC_PALETTE_SIZE;
- info->fix.visual = FB_VISUAL_DIRECTCOLOR;
- break;
-#endif
- default:
- BUG();
- }
-
- info->fix.line_length = (info->var.xres * info->var.bits_per_pixel) / 8;
-
-#if defined(HAS_MEMC)
- {
- unsigned long size = info->fix.smem_len - VDMA_XFERSIZE;
-
- memc_write(VDMA_START, 0);
- memc_write(VDMA_END, size >> 2);
- }
-#elif defined(HAS_IOMD)
- {
- unsigned long start, size;
- u_int control;
-
- start = info->fix.smem_start;
- size = current_par.screen_end;
-
- if (current_par.using_vram) {
- size -= current_par.vram_half_sam;
- control = DMA_CR_E | (current_par.vram_half_sam / 256);
- } else {
- size -= 16;
- control = DMA_CR_E | DMA_CR_D | 16;
- }
-
- iomd_writel(start, IOMD_VIDSTART);
- iomd_writel(size, IOMD_VIDEND);
- iomd_writel(control, IOMD_VIDCR);
- }
-#endif
-
- acornfb_update_dma(info, &info->var);
- acornfb_set_timing(info);
-
- return 0;
-}
-
-static int
-acornfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
-{
- u_int y_bottom = var->yoffset;
-
- if (!(var->vmode & FB_VMODE_YWRAP))
- y_bottom += info->var.yres;
-
- if (y_bottom > info->var.yres_virtual)
- return -EINVAL;
-
- acornfb_update_dma(info, var);
-
- return 0;
-}
-
-static struct fb_ops acornfb_ops = {
- .owner = THIS_MODULE,
- .fb_check_var = acornfb_check_var,
- .fb_set_par = acornfb_set_par,
- .fb_setcolreg = acornfb_setcolreg,
- .fb_pan_display = acornfb_pan_display,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
-};
-
-/*
- * Everything after here is initialisation!!!
- */
-static struct fb_videomode modedb[] = {
- { /* 320x256 @ 50Hz */
- NULL, 50, 320, 256, 125000, 92, 62, 35, 19, 38, 2,
- FB_SYNC_COMP_HIGH_ACT,
- FB_VMODE_NONINTERLACED
- }, { /* 640x250 @ 50Hz, 15.6 kHz hsync */
- NULL, 50, 640, 250, 62500, 185, 123, 38, 21, 76, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 640x256 @ 50Hz, 15.6 kHz hsync */
- NULL, 50, 640, 256, 62500, 185, 123, 35, 18, 76, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 640x512 @ 50Hz, 26.8 kHz hsync */
- NULL, 50, 640, 512, 41667, 113, 87, 18, 1, 56, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 640x250 @ 70Hz, 31.5 kHz hsync */
- NULL, 70, 640, 250, 39722, 48, 16, 109, 88, 96, 2,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 640x256 @ 70Hz, 31.5 kHz hsync */
- NULL, 70, 640, 256, 39722, 48, 16, 106, 85, 96, 2,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 640x352 @ 70Hz, 31.5 kHz hsync */
- NULL, 70, 640, 352, 39722, 48, 16, 58, 37, 96, 2,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 640x480 @ 60Hz, 31.5 kHz hsync */
- NULL, 60, 640, 480, 39722, 48, 16, 32, 11, 96, 2,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 800x600 @ 56Hz, 35.2 kHz hsync */
- NULL, 56, 800, 600, 27778, 101, 23, 22, 1, 100, 2,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 896x352 @ 60Hz, 21.8 kHz hsync */
- NULL, 60, 896, 352, 41667, 59, 27, 9, 0, 118, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 1024x 768 @ 60Hz, 48.4 kHz hsync */
- NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
- 0,
- FB_VMODE_NONINTERLACED
- }, { /* 1280x1024 @ 60Hz, 63.8 kHz hsync */
- NULL, 60, 1280, 1024, 9090, 186, 96, 38, 1, 160, 3,
- 0,
- FB_VMODE_NONINTERLACED
- }
-};
-
-static struct fb_videomode acornfb_default_mode = {
- .name = NULL,
- .refresh = 60,
- .xres = 640,
- .yres = 480,
- .pixclock = 39722,
- .left_margin = 56,
- .right_margin = 16,
- .upper_margin = 34,
- .lower_margin = 9,
- .hsync_len = 88,
- .vsync_len = 2,
- .sync = 0,
- .vmode = FB_VMODE_NONINTERLACED
-};
-
-static void acornfb_init_fbinfo(void)
-{
- static int first = 1;
-
- if (!first)
- return;
- first = 0;
-
- fb_info.fbops = &acornfb_ops;
- fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
- fb_info.pseudo_palette = current_par.pseudo_palette;
-
- strcpy(fb_info.fix.id, "Acorn");
- fb_info.fix.type = FB_TYPE_PACKED_PIXELS;
- fb_info.fix.type_aux = 0;
- fb_info.fix.xpanstep = 0;
- fb_info.fix.ypanstep = 1;
- fb_info.fix.ywrapstep = 1;
- fb_info.fix.line_length = 0;
- fb_info.fix.accel = FB_ACCEL_NONE;
-
- /*
- * setup initial parameters
- */
- memset(&fb_info.var, 0, sizeof(fb_info.var));
-
-#if defined(HAS_VIDC20)
- fb_info.var.red.length = 8;
- fb_info.var.transp.length = 4;
-#endif
- fb_info.var.green = fb_info.var.red;
- fb_info.var.blue = fb_info.var.red;
- fb_info.var.nonstd = 0;
- fb_info.var.activate = FB_ACTIVATE_NOW;
- fb_info.var.height = -1;
- fb_info.var.width = -1;
- fb_info.var.vmode = FB_VMODE_NONINTERLACED;
- fb_info.var.accel_flags = FB_ACCELF_TEXT;
-
- current_par.dram_size = 0;
- current_par.montype = -1;
- current_par.dpms = 0;
-}
-
-/*
- * setup acornfb options:
- *
- * mon:hmin-hmax:vmin-vmax:dpms:width:height
- * Set monitor parameters:
- * hmin = horizontal minimum frequency (Hz)
- * hmax = horizontal maximum frequency (Hz) (optional)
- * vmin = vertical minimum frequency (Hz)
- * vmax = vertical maximum frequency (Hz) (optional)
- * dpms = DPMS supported? (optional)
- * width = width of picture in mm. (optional)
- * height = height of picture in mm. (optional)
- *
- * montype:type
- * Set RISC-OS style monitor type:
- * 0 (or tv) - TV frequency
- * 1 (or multi) - Multi frequency
- * 2 (or hires) - Hi-res monochrome
- * 3 (or vga) - VGA
- * 4 (or svga) - SVGA
- * auto, or option missing
- * - try hardware detect
- *
- * dram:size
- * Set the amount of DRAM to use for the frame buffer
- * (even if you have VRAM).
- * size can optionally be followed by 'M' or 'K' for
- * MB or KB respectively.
- */
-static void acornfb_parse_mon(char *opt)
-{
- char *p = opt;
-
- current_par.montype = -2;
-
- fb_info.monspecs.hfmin = simple_strtoul(p, &p, 0);
- if (*p == '-')
- fb_info.monspecs.hfmax = simple_strtoul(p + 1, &p, 0);
- else
- fb_info.monspecs.hfmax = fb_info.monspecs.hfmin;
-
- if (*p != ':')
- goto bad;
-
- fb_info.monspecs.vfmin = simple_strtoul(p + 1, &p, 0);
- if (*p == '-')
- fb_info.monspecs.vfmax = simple_strtoul(p + 1, &p, 0);
- else
- fb_info.monspecs.vfmax = fb_info.monspecs.vfmin;
-
- if (*p != ':')
- goto check_values;
-
- fb_info.monspecs.dpms = simple_strtoul(p + 1, &p, 0);
-
- if (*p != ':')
- goto check_values;
-
- fb_info.var.width = simple_strtoul(p + 1, &p, 0);
-
- if (*p != ':')
- goto check_values;
-
- fb_info.var.height = simple_strtoul(p + 1, NULL, 0);
-
-check_values:
- if (fb_info.monspecs.hfmax < fb_info.monspecs.hfmin ||
- fb_info.monspecs.vfmax < fb_info.monspecs.vfmin)
- goto bad;
- return;
-
-bad:
- printk(KERN_ERR "Acornfb: bad monitor settings: %s\n", opt);
- current_par.montype = -1;
-}
-
-static void acornfb_parse_montype(char *opt)
-{
- current_par.montype = -2;
-
- if (strncmp(opt, "tv", 2) == 0) {
- opt += 2;
- current_par.montype = 0;
- } else if (strncmp(opt, "multi", 5) == 0) {
- opt += 5;
- current_par.montype = 1;
- } else if (strncmp(opt, "hires", 5) == 0) {
- opt += 5;
- current_par.montype = 2;
- } else if (strncmp(opt, "vga", 3) == 0) {
- opt += 3;
- current_par.montype = 3;
- } else if (strncmp(opt, "svga", 4) == 0) {
- opt += 4;
- current_par.montype = 4;
- } else if (strncmp(opt, "auto", 4) == 0) {
- opt += 4;
- current_par.montype = -1;
- } else if (isdigit(*opt))
- current_par.montype = simple_strtoul(opt, &opt, 0);
-
- if (current_par.montype == -2 ||
- current_par.montype > NR_MONTYPES) {
- printk(KERN_ERR "acornfb: unknown monitor type: %s\n",
- opt);
- current_par.montype = -1;
- } else
- if (opt && *opt) {
- if (strcmp(opt, ",dpms") == 0)
- current_par.dpms = 1;
- else
- printk(KERN_ERR
- "acornfb: unknown monitor option: %s\n",
- opt);
- }
-}
-
-static void acornfb_parse_dram(char *opt)
-{
- unsigned int size;
-
- size = simple_strtoul(opt, &opt, 0);
-
- if (opt) {
- switch (*opt) {
- case 'M':
- case 'm':
- size *= 1024;
- case 'K':
- case 'k':
- size *= 1024;
- default:
- break;
- }
- }
-
- current_par.dram_size = size;
-}
-
-static struct options {
- char *name;
- void (*parse)(char *opt);
-} opt_table[] = {
- { "mon", acornfb_parse_mon },
- { "montype", acornfb_parse_montype },
- { "dram", acornfb_parse_dram },
- { NULL, NULL }
-};
-
-static int acornfb_setup(char *options)
-{
- struct options *optp;
- char *opt;
-
- if (!options || !*options)
- return 0;
-
- acornfb_init_fbinfo();
-
- while ((opt = strsep(&options, ",")) != NULL) {
- if (!*opt)
- continue;
-
- for (optp = opt_table; optp->name; optp++) {
- int optlen;
-
- optlen = strlen(optp->name);
-
- if (strncmp(opt, optp->name, optlen) == 0 &&
- opt[optlen] == ':') {
- optp->parse(opt + optlen + 1);
- break;
- }
- }
-
- if (!optp->name)
- printk(KERN_ERR "acornfb: unknown parameter: %s\n",
- opt);
- }
- return 0;
-}
-
-/*
- * Detect type of monitor connected
- * For now, we just assume SVGA
- */
-static int acornfb_detect_monitortype(void)
-{
- return 4;
-}
-
-/*
- * This enables the unused memory to be freed on older Acorn machines.
- * We are freeing memory on behalf of the architecture initialisation
- * code here.
- */
-static inline void
-free_unused_pages(unsigned int virtual_start, unsigned int virtual_end)
-{
- int mb_freed = 0;
-
- /*
- * Align addresses
- */
- virtual_start = PAGE_ALIGN(virtual_start);
- virtual_end = PAGE_ALIGN(virtual_end);
-
- while (virtual_start < virtual_end) {
- struct page *page;
-
- /*
- * Clear page reserved bit,
- * set count to 1, and free
- * the page.
- */
- page = virt_to_page(virtual_start);
- __free_reserved_page(page);
-
- virtual_start += PAGE_SIZE;
- mb_freed += PAGE_SIZE / 1024;
- }
-
- printk("acornfb: freed %dK memory\n", mb_freed);
-}
-
-static int acornfb_probe(struct platform_device *dev)
-{
- unsigned long size;
- u_int h_sync, v_sync;
- int rc, i;
- char *option = NULL;
-
- if (fb_get_options("acornfb", &option))
- return -ENODEV;
- acornfb_setup(option);
-
- acornfb_init_fbinfo();
-
- current_par.dev = &dev->dev;
-
- if (current_par.montype == -1)
- current_par.montype = acornfb_detect_monitortype();
-
- if (current_par.montype == -1 || current_par.montype > NR_MONTYPES)
- current_par.montype = 4;
-
- if (current_par.montype >= 0) {
- fb_info.monspecs = monspecs[current_par.montype];
- fb_info.monspecs.dpms = current_par.dpms;
- }
-
- /*
- * Try to select a suitable default mode
- */
- for (i = 0; i < ARRAY_SIZE(modedb); i++) {
- unsigned long hs;
-
- hs = modedb[i].refresh *
- (modedb[i].yres + modedb[i].upper_margin +
- modedb[i].lower_margin + modedb[i].vsync_len);
- if (modedb[i].xres == DEFAULT_XRES &&
- modedb[i].yres == DEFAULT_YRES &&
- modedb[i].refresh >= fb_info.monspecs.vfmin &&
- modedb[i].refresh <= fb_info.monspecs.vfmax &&
- hs >= fb_info.monspecs.hfmin &&
- hs <= fb_info.monspecs.hfmax) {
- acornfb_default_mode = modedb[i];
- break;
- }
- }
-
- fb_info.screen_base = (char *)SCREEN_BASE;
- fb_info.fix.smem_start = SCREEN_START;
- current_par.using_vram = 0;
-
- /*
- * If vram_size is set, we are using VRAM in
- * a Risc PC. However, if the user has specified
- * an amount of DRAM then use that instead.
- */
- if (vram_size && !current_par.dram_size) {
- size = vram_size;
- current_par.vram_half_sam = vram_size / 1024;
- current_par.using_vram = 1;
- } else if (current_par.dram_size)
- size = current_par.dram_size;
- else
- size = MAX_SIZE;
-
- /*
- * Limit maximum screen size.
- */
- if (size > MAX_SIZE)
- size = MAX_SIZE;
-
- size = PAGE_ALIGN(size);
-
-#if defined(HAS_VIDC20)
- if (!current_par.using_vram) {
- dma_addr_t handle;
- void *base;
-
- /*
- * RiscPC needs to allocate the DRAM memory
- * for the framebuffer if we are not using
- * VRAM.
- */
- base = dma_alloc_writecombine(current_par.dev, size, &handle,
- GFP_KERNEL);
- if (base == NULL) {
- printk(KERN_ERR "acornfb: unable to allocate screen "
- "memory\n");
- return -ENOMEM;
- }
-
- fb_info.screen_base = base;
- fb_info.fix.smem_start = handle;
- }
-#endif
- fb_info.fix.smem_len = size;
- current_par.palette_size = VIDC_PALETTE_SIZE;
-
- /*
- * Lookup the timing for this resolution. If we can't
- * find it, then we can't restore it if we change
- * the resolution, so we disable this feature.
- */
- do {
- rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb,
- ARRAY_SIZE(modedb),
- &acornfb_default_mode, DEFAULT_BPP);
- /*
- * If we found an exact match, all ok.
- */
- if (rc == 1)
- break;
-
- rc = fb_find_mode(&fb_info.var, &fb_info, NULL, NULL, 0,
- &acornfb_default_mode, DEFAULT_BPP);
- /*
- * If we found an exact match, all ok.
- */
- if (rc == 1)
- break;
-
- rc = fb_find_mode(&fb_info.var, &fb_info, NULL, modedb,
- ARRAY_SIZE(modedb),
- &acornfb_default_mode, DEFAULT_BPP);
- if (rc)
- break;
-
- rc = fb_find_mode(&fb_info.var, &fb_info, NULL, NULL, 0,
- &acornfb_default_mode, DEFAULT_BPP);
- } while (0);
-
- /*
- * If we didn't find an exact match, try the
- * generic database.
- */
- if (rc == 0) {
- printk("Acornfb: no valid mode found\n");
- return -EINVAL;
- }
-
- h_sync = 1953125000 / fb_info.var.pixclock;
- h_sync = h_sync * 512 / (fb_info.var.xres + fb_info.var.left_margin +
- fb_info.var.right_margin + fb_info.var.hsync_len);
- v_sync = h_sync / (fb_info.var.yres + fb_info.var.upper_margin +
- fb_info.var.lower_margin + fb_info.var.vsync_len);
-
- printk(KERN_INFO "Acornfb: %dkB %cRAM, %s, using %dx%d, "
- "%d.%03dkHz, %dHz\n",
- fb_info.fix.smem_len / 1024,
- current_par.using_vram ? 'V' : 'D',
- VIDC_NAME, fb_info.var.xres, fb_info.var.yres,
- h_sync / 1000, h_sync % 1000, v_sync);
-
- printk(KERN_INFO "Acornfb: Monitor: %d.%03d-%d.%03dkHz, %d-%dHz%s\n",
- fb_info.monspecs.hfmin / 1000, fb_info.monspecs.hfmin % 1000,
- fb_info.monspecs.hfmax / 1000, fb_info.monspecs.hfmax % 1000,
- fb_info.monspecs.vfmin, fb_info.monspecs.vfmax,
- fb_info.monspecs.dpms ? ", DPMS" : "");
-
- if (fb_set_var(&fb_info, &fb_info.var))
- printk(KERN_ERR "Acornfb: unable to set display parameters\n");
-
- if (register_framebuffer(&fb_info) < 0)
- return -EINVAL;
- return 0;
-}
-
-static struct platform_driver acornfb_driver = {
- .probe = acornfb_probe,
- .driver = {
- .name = "acornfb",
- },
-};
-
-static int __init acornfb_init(void)
-{
- return platform_driver_register(&acornfb_driver);
-}
-
-module_init(acornfb_init);
-
-MODULE_AUTHOR("Russell King");
-MODULE_DESCRIPTION("VIDC 1/1a/20 framebuffer driver");
-MODULE_LICENSE("GPL");