cd354f1ae7
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
910 lines
20 KiB
C
910 lines
20 KiB
C
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/*
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* ATI Mach64 GX Support
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*/
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <asm/io.h>
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#include <video/mach64.h>
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#include "atyfb.h"
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/* Definitions for the ICS 2595 == ATI 18818_1 Clockchip */
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#define REF_FREQ_2595 1432 /* 14.33 MHz (exact 14.31818) */
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#define REF_DIV_2595 46 /* really 43 on ICS 2595 !!! */
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/* ohne Prescaler */
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#define MAX_FREQ_2595 15938 /* 159.38 MHz (really 170.486) */
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#define MIN_FREQ_2595 8000 /* 80.00 MHz ( 85.565) */
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/* mit Prescaler 2, 4, 8 */
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#define ABS_MIN_FREQ_2595 1000 /* 10.00 MHz (really 10.697) */
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#define N_ADJ_2595 257
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#define STOP_BITS_2595 0x1800
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#define MIN_N_408 2
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#define MIN_N_1703 6
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#define MIN_M 2
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#define MAX_M 30
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#define MIN_N 35
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#define MAX_N 255-8
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/*
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* Support Functions
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*/
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static void aty_dac_waste4(const struct atyfb_par *par)
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{
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(void) aty_ld_8(DAC_REGS, par);
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(void) aty_ld_8(DAC_REGS + 2, par);
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(void) aty_ld_8(DAC_REGS + 2, par);
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(void) aty_ld_8(DAC_REGS + 2, par);
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(void) aty_ld_8(DAC_REGS + 2, par);
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}
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static void aty_StrobeClock(const struct atyfb_par *par)
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{
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u8 tmp;
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udelay(26);
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tmp = aty_ld_8(CLOCK_CNTL, par);
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset, tmp | CLOCK_STROBE, par);
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return;
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}
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/*
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* IBM RGB514 DAC and Clock Chip
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*/
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static void aty_st_514(int offset, u8 val, const struct atyfb_par *par)
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{
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aty_st_8(DAC_CNTL, 1, par);
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/* right addr byte */
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aty_st_8(DAC_W_INDEX, offset & 0xff, par);
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/* left addr byte */
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aty_st_8(DAC_DATA, (offset >> 8) & 0xff, par);
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aty_st_8(DAC_MASK, val, par);
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aty_st_8(DAC_CNTL, 0, par);
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}
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static int aty_set_dac_514(const struct fb_info *info,
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const union aty_pll *pll, u32 bpp, u32 accel)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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static struct {
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u8 pixel_dly;
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u8 misc2_cntl;
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u8 pixel_rep;
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u8 pixel_cntl_index;
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u8 pixel_cntl_v1;
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} tab[3] = {
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{
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0, 0x41, 0x03, 0x71, 0x45}, /* 8 bpp */
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{
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0, 0x45, 0x04, 0x0c, 0x01}, /* 555 */
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{
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0, 0x45, 0x06, 0x0e, 0x00}, /* XRGB */
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};
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int i;
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switch (bpp) {
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case 8:
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default:
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i = 0;
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break;
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case 16:
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i = 1;
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break;
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case 32:
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i = 2;
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break;
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}
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aty_st_514(0x90, 0x00, par); /* VRAM Mask Low */
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aty_st_514(0x04, tab[i].pixel_dly, par); /* Horizontal Sync Control */
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aty_st_514(0x05, 0x00, par); /* Power Management */
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aty_st_514(0x02, 0x01, par); /* Misc Clock Control */
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aty_st_514(0x71, tab[i].misc2_cntl, par); /* Misc Control 2 */
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aty_st_514(0x0a, tab[i].pixel_rep, par); /* Pixel Format */
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aty_st_514(tab[i].pixel_cntl_index, tab[i].pixel_cntl_v1, par);
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/* Misc Control 2 / 16 BPP Control / 32 BPP Control */
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return 0;
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}
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static int aty_var_to_pll_514(const struct fb_info *info, u32 vclk_per,
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u32 bpp, union aty_pll *pll)
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{
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/*
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* FIXME: use real calculations instead of using fixed values from the old
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* driver
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*/
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static struct {
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u32 limit; /* pixlock rounding limit (arbitrary) */
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u8 m; /* (df<<6) | vco_div_count */
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u8 n; /* ref_div_count */
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} RGB514_clocks[7] = {
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{
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8000, (3 << 6) | 20, 9}, /* 7395 ps / 135.2273 MHz */
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{
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10000, (1 << 6) | 19, 3}, /* 9977 ps / 100.2273 MHz */
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{
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13000, (1 << 6) | 2, 3}, /* 12509 ps / 79.9432 MHz */
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{
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14000, (2 << 6) | 8, 7}, /* 13394 ps / 74.6591 MHz */
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{
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16000, (1 << 6) | 44, 6}, /* 15378 ps / 65.0284 MHz */
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{
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25000, (1 << 6) | 15, 5}, /* 17460 ps / 57.2727 MHz */
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{
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50000, (0 << 6) | 53, 7}, /* 33145 ps / 30.1705 MHz */
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};
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int i;
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for (i = 0; i < ARRAY_SIZE(RGB514_clocks); i++)
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if (vclk_per <= RGB514_clocks[i].limit) {
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pll->ibm514.m = RGB514_clocks[i].m;
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pll->ibm514.n = RGB514_clocks[i].n;
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return 0;
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}
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return -EINVAL;
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}
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static u32 aty_pll_514_to_var(const struct fb_info *info,
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const union aty_pll *pll)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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u8 df, vco_div_count, ref_div_count;
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df = pll->ibm514.m >> 6;
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vco_div_count = pll->ibm514.m & 0x3f;
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ref_div_count = pll->ibm514.n;
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return ((par->ref_clk_per * ref_div_count) << (3 - df))/
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(vco_div_count + 65);
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}
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static void aty_set_pll_514(const struct fb_info *info,
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const union aty_pll *pll)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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aty_st_514(0x06, 0x02, par); /* DAC Operation */
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aty_st_514(0x10, 0x01, par); /* PLL Control 1 */
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aty_st_514(0x70, 0x01, par); /* Misc Control 1 */
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aty_st_514(0x8f, 0x1f, par); /* PLL Ref. Divider Input */
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aty_st_514(0x03, 0x00, par); /* Sync Control */
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aty_st_514(0x05, 0x00, par); /* Power Management */
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aty_st_514(0x20, pll->ibm514.m, par); /* F0 / M0 */
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aty_st_514(0x21, pll->ibm514.n, par); /* F1 / N0 */
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}
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const struct aty_dac_ops aty_dac_ibm514 = {
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.set_dac = aty_set_dac_514,
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};
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const struct aty_pll_ops aty_pll_ibm514 = {
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.var_to_pll = aty_var_to_pll_514,
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.pll_to_var = aty_pll_514_to_var,
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.set_pll = aty_set_pll_514,
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};
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/*
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* ATI 68860-B DAC
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*/
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static int aty_set_dac_ATI68860_B(const struct fb_info *info,
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const union aty_pll *pll, u32 bpp,
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u32 accel)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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u32 gModeReg, devSetupRegA, temp, mask;
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gModeReg = 0;
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devSetupRegA = 0;
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switch (bpp) {
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case 8:
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gModeReg = 0x83;
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devSetupRegA =
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0x60 | 0x00 /*(info->mach64DAC8Bit ? 0x00 : 0x01) */ ;
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break;
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case 15:
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gModeReg = 0xA0;
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devSetupRegA = 0x60;
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break;
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case 16:
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gModeReg = 0xA1;
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devSetupRegA = 0x60;
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break;
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case 24:
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gModeReg = 0xC0;
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devSetupRegA = 0x60;
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break;
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case 32:
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gModeReg = 0xE3;
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devSetupRegA = 0x60;
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break;
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}
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if (!accel) {
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gModeReg = 0x80;
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devSetupRegA = 0x61;
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}
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temp = aty_ld_8(DAC_CNTL, par);
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aty_st_8(DAC_CNTL, (temp & ~DAC_EXT_SEL_RS2) | DAC_EXT_SEL_RS3,
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par);
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aty_st_8(DAC_REGS + 2, 0x1D, par);
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aty_st_8(DAC_REGS + 3, gModeReg, par);
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aty_st_8(DAC_REGS, 0x02, par);
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temp = aty_ld_8(DAC_CNTL, par);
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aty_st_8(DAC_CNTL, temp | DAC_EXT_SEL_RS2 | DAC_EXT_SEL_RS3, par);
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if (info->fix.smem_len < ONE_MB)
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mask = 0x04;
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else if (info->fix.smem_len == ONE_MB)
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mask = 0x08;
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else
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mask = 0x0C;
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/* The following assumes that the BIOS has correctly set R7 of the
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* Device Setup Register A at boot time.
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*/
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#define A860_DELAY_L 0x80
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temp = aty_ld_8(DAC_REGS, par);
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aty_st_8(DAC_REGS, (devSetupRegA | mask) | (temp & A860_DELAY_L),
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par);
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temp = aty_ld_8(DAC_CNTL, par);
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aty_st_8(DAC_CNTL, (temp & ~(DAC_EXT_SEL_RS2 | DAC_EXT_SEL_RS3)),
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par);
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aty_st_le32(BUS_CNTL, 0x890e20f1, par);
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aty_st_le32(DAC_CNTL, 0x47052100, par);
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return 0;
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}
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const struct aty_dac_ops aty_dac_ati68860b = {
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.set_dac = aty_set_dac_ATI68860_B,
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};
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/*
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* AT&T 21C498 DAC
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*/
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static int aty_set_dac_ATT21C498(const struct fb_info *info,
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const union aty_pll *pll, u32 bpp,
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u32 accel)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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u32 dotClock;
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int muxmode = 0;
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int DACMask = 0;
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dotClock = 100000000 / pll->ics2595.period_in_ps;
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switch (bpp) {
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case 8:
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if (dotClock > 8000) {
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DACMask = 0x24;
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muxmode = 1;
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} else
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DACMask = 0x04;
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break;
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case 15:
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DACMask = 0x16;
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break;
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case 16:
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DACMask = 0x36;
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break;
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case 24:
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DACMask = 0xE6;
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break;
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case 32:
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DACMask = 0xE6;
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break;
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}
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if (1 /* info->mach64DAC8Bit */ )
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DACMask |= 0x02;
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aty_dac_waste4(par);
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aty_st_8(DAC_REGS + 2, DACMask, par);
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aty_st_le32(BUS_CNTL, 0x890e20f1, par);
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aty_st_le32(DAC_CNTL, 0x00072000, par);
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return muxmode;
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}
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const struct aty_dac_ops aty_dac_att21c498 = {
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.set_dac = aty_set_dac_ATT21C498,
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};
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/*
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* ATI 18818 / ICS 2595 Clock Chip
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*/
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static int aty_var_to_pll_18818(const struct fb_info *info, u32 vclk_per,
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u32 bpp, union aty_pll *pll)
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{
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u32 MHz100; /* in 0.01 MHz */
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u32 program_bits;
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u32 post_divider;
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/* Calculate the programming word */
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MHz100 = 100000000 / vclk_per;
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program_bits = -1;
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post_divider = 1;
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if (MHz100 > MAX_FREQ_2595) {
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MHz100 = MAX_FREQ_2595;
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return -EINVAL;
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} else if (MHz100 < ABS_MIN_FREQ_2595) {
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program_bits = 0; /* MHz100 = 257 */
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return -EINVAL;
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} else {
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while (MHz100 < MIN_FREQ_2595) {
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MHz100 *= 2;
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post_divider *= 2;
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}
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}
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MHz100 *= 1000;
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MHz100 = (REF_DIV_2595 * MHz100) / REF_FREQ_2595;
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MHz100 += 500; /* + 0.5 round */
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MHz100 /= 1000;
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if (program_bits == -1) {
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program_bits = MHz100 - N_ADJ_2595;
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switch (post_divider) {
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case 1:
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program_bits |= 0x0600;
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break;
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case 2:
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program_bits |= 0x0400;
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break;
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case 4:
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program_bits |= 0x0200;
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break;
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case 8:
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default:
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break;
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}
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}
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program_bits |= STOP_BITS_2595;
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pll->ics2595.program_bits = program_bits;
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pll->ics2595.locationAddr = 0;
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pll->ics2595.post_divider = post_divider;
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pll->ics2595.period_in_ps = vclk_per;
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return 0;
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}
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static u32 aty_pll_18818_to_var(const struct fb_info *info,
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const union aty_pll *pll)
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{
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return (pll->ics2595.period_in_ps); /* default for now */
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}
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static void aty_ICS2595_put1bit(u8 data, const struct atyfb_par *par)
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{
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u8 tmp;
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data &= 0x01;
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tmp = aty_ld_8(CLOCK_CNTL, par);
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset,
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(tmp & ~0x04) | (data << 2), par);
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tmp = aty_ld_8(CLOCK_CNTL, par);
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset, (tmp & ~0x08) | (0 << 3),
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par);
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aty_StrobeClock(par);
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tmp = aty_ld_8(CLOCK_CNTL, par);
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset, (tmp & ~0x08) | (1 << 3),
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par);
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aty_StrobeClock(par);
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return;
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}
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static void aty_set_pll18818(const struct fb_info *info,
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const union aty_pll *pll)
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{
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struct atyfb_par *par = (struct atyfb_par *) info->par;
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u32 program_bits;
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u32 locationAddr;
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u32 i;
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u8 old_clock_cntl;
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u8 old_crtc_ext_disp;
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old_clock_cntl = aty_ld_8(CLOCK_CNTL, par);
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset, 0, par);
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old_crtc_ext_disp = aty_ld_8(CRTC_GEN_CNTL + 3, par);
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aty_st_8(CRTC_GEN_CNTL + 3,
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old_crtc_ext_disp | (CRTC_EXT_DISP_EN >> 24), par);
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mdelay(15); /* delay for 50 (15) ms */
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program_bits = pll->ics2595.program_bits;
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locationAddr = pll->ics2595.locationAddr;
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/* Program the clock chip */
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset, 0, par); /* Strobe = 0 */
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aty_StrobeClock(par);
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset, 1, par); /* Strobe = 0 */
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aty_StrobeClock(par);
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aty_ICS2595_put1bit(1, par); /* Send start bits */
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aty_ICS2595_put1bit(0, par); /* Start bit */
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aty_ICS2595_put1bit(0, par); /* Read / ~Write */
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for (i = 0; i < 5; i++) { /* Location 0..4 */
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aty_ICS2595_put1bit(locationAddr & 1, par);
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locationAddr >>= 1;
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}
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for (i = 0; i < 8 + 1 + 2 + 2; i++) {
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aty_ICS2595_put1bit(program_bits & 1, par);
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program_bits >>= 1;
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}
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mdelay(1); /* delay for 1 ms */
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(void) aty_ld_8(DAC_REGS, par); /* Clear DAC Counter */
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aty_st_8(CRTC_GEN_CNTL + 3, old_crtc_ext_disp, par);
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aty_st_8(CLOCK_CNTL + par->clk_wr_offset,
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old_clock_cntl | CLOCK_STROBE, par);
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|
|
mdelay(50); /* delay for 50 (15) ms */
|
|
aty_st_8(CLOCK_CNTL + par->clk_wr_offset,
|
|
((pll->ics2595.locationAddr & 0x0F) | CLOCK_STROBE), par);
|
|
return;
|
|
}
|
|
|
|
const struct aty_pll_ops aty_pll_ati18818_1 = {
|
|
.var_to_pll = aty_var_to_pll_18818,
|
|
.pll_to_var = aty_pll_18818_to_var,
|
|
.set_pll = aty_set_pll18818,
|
|
};
|
|
|
|
|
|
/*
|
|
* STG 1703 Clock Chip
|
|
*/
|
|
|
|
static int aty_var_to_pll_1703(const struct fb_info *info, u32 vclk_per,
|
|
u32 bpp, union aty_pll *pll)
|
|
{
|
|
u32 mhz100; /* in 0.01 MHz */
|
|
u32 program_bits;
|
|
/* u32 post_divider; */
|
|
u32 mach64MinFreq, mach64MaxFreq, mach64RefFreq;
|
|
u32 temp, tempB;
|
|
u16 remainder, preRemainder;
|
|
short divider = 0, tempA;
|
|
|
|
/* Calculate the programming word */
|
|
mhz100 = 100000000 / vclk_per;
|
|
mach64MinFreq = MIN_FREQ_2595;
|
|
mach64MaxFreq = MAX_FREQ_2595;
|
|
mach64RefFreq = REF_FREQ_2595; /* 14.32 MHz */
|
|
|
|
/* Calculate program word */
|
|
if (mhz100 == 0)
|
|
program_bits = 0xE0;
|
|
else {
|
|
if (mhz100 < mach64MinFreq)
|
|
mhz100 = mach64MinFreq;
|
|
if (mhz100 > mach64MaxFreq)
|
|
mhz100 = mach64MaxFreq;
|
|
|
|
divider = 0;
|
|
while (mhz100 < (mach64MinFreq << 3)) {
|
|
mhz100 <<= 1;
|
|
divider += 0x20;
|
|
}
|
|
|
|
temp = (unsigned int) (mhz100);
|
|
temp = (unsigned int) (temp * (MIN_N_1703 + 2));
|
|
temp -= (short) (mach64RefFreq << 1);
|
|
|
|
tempA = MIN_N_1703;
|
|
preRemainder = 0xffff;
|
|
|
|
do {
|
|
tempB = temp;
|
|
remainder = tempB % mach64RefFreq;
|
|
tempB = tempB / mach64RefFreq;
|
|
|
|
if ((tempB & 0xffff) <= 127
|
|
&& (remainder <= preRemainder)) {
|
|
preRemainder = remainder;
|
|
divider &= ~0x1f;
|
|
divider |= tempA;
|
|
divider =
|
|
(divider & 0x00ff) +
|
|
((tempB & 0xff) << 8);
|
|
}
|
|
|
|
temp += mhz100;
|
|
tempA++;
|
|
} while (tempA <= (MIN_N_1703 << 1));
|
|
|
|
program_bits = divider;
|
|
}
|
|
|
|
pll->ics2595.program_bits = program_bits;
|
|
pll->ics2595.locationAddr = 0;
|
|
pll->ics2595.post_divider = divider; /* fuer nix */
|
|
pll->ics2595.period_in_ps = vclk_per;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 aty_pll_1703_to_var(const struct fb_info *info,
|
|
const union aty_pll *pll)
|
|
{
|
|
return (pll->ics2595.period_in_ps); /* default for now */
|
|
}
|
|
|
|
static void aty_set_pll_1703(const struct fb_info *info,
|
|
const union aty_pll *pll)
|
|
{
|
|
struct atyfb_par *par = (struct atyfb_par *) info->par;
|
|
u32 program_bits;
|
|
u32 locationAddr;
|
|
|
|
char old_crtc_ext_disp;
|
|
|
|
old_crtc_ext_disp = aty_ld_8(CRTC_GEN_CNTL + 3, par);
|
|
aty_st_8(CRTC_GEN_CNTL + 3,
|
|
old_crtc_ext_disp | (CRTC_EXT_DISP_EN >> 24), par);
|
|
|
|
program_bits = pll->ics2595.program_bits;
|
|
locationAddr = pll->ics2595.locationAddr;
|
|
|
|
/* Program clock */
|
|
aty_dac_waste4(par);
|
|
|
|
(void) aty_ld_8(DAC_REGS + 2, par);
|
|
aty_st_8(DAC_REGS + 2, (locationAddr << 1) + 0x20, par);
|
|
aty_st_8(DAC_REGS + 2, 0, par);
|
|
aty_st_8(DAC_REGS + 2, (program_bits & 0xFF00) >> 8, par);
|
|
aty_st_8(DAC_REGS + 2, (program_bits & 0xFF), par);
|
|
|
|
(void) aty_ld_8(DAC_REGS, par); /* Clear DAC Counter */
|
|
aty_st_8(CRTC_GEN_CNTL + 3, old_crtc_ext_disp, par);
|
|
return;
|
|
}
|
|
|
|
const struct aty_pll_ops aty_pll_stg1703 = {
|
|
.var_to_pll = aty_var_to_pll_1703,
|
|
.pll_to_var = aty_pll_1703_to_var,
|
|
.set_pll = aty_set_pll_1703,
|
|
};
|
|
|
|
|
|
/*
|
|
* Chrontel 8398 Clock Chip
|
|
*/
|
|
|
|
static int aty_var_to_pll_8398(const struct fb_info *info, u32 vclk_per,
|
|
u32 bpp, union aty_pll *pll)
|
|
{
|
|
u32 tempA, tempB, fOut, longMHz100, diff, preDiff;
|
|
|
|
u32 mhz100; /* in 0.01 MHz */
|
|
u32 program_bits;
|
|
/* u32 post_divider; */
|
|
u32 mach64MinFreq, mach64MaxFreq, mach64RefFreq;
|
|
u16 m, n, k = 0, save_m, save_n, twoToKth;
|
|
|
|
/* Calculate the programming word */
|
|
mhz100 = 100000000 / vclk_per;
|
|
mach64MinFreq = MIN_FREQ_2595;
|
|
mach64MaxFreq = MAX_FREQ_2595;
|
|
mach64RefFreq = REF_FREQ_2595; /* 14.32 MHz */
|
|
|
|
save_m = 0;
|
|
save_n = 0;
|
|
|
|
/* Calculate program word */
|
|
if (mhz100 == 0)
|
|
program_bits = 0xE0;
|
|
else {
|
|
if (mhz100 < mach64MinFreq)
|
|
mhz100 = mach64MinFreq;
|
|
if (mhz100 > mach64MaxFreq)
|
|
mhz100 = mach64MaxFreq;
|
|
|
|
longMHz100 = mhz100 * 256 / 100; /* 8 bit scale this */
|
|
|
|
while (mhz100 < (mach64MinFreq << 3)) {
|
|
mhz100 <<= 1;
|
|
k++;
|
|
}
|
|
|
|
twoToKth = 1 << k;
|
|
diff = 0;
|
|
preDiff = 0xFFFFFFFF;
|
|
|
|
for (m = MIN_M; m <= MAX_M; m++) {
|
|
for (n = MIN_N; n <= MAX_N; n++) {
|
|
tempA = 938356; /* 14.31818 * 65536 */
|
|
tempA *= (n + 8); /* 43..256 */
|
|
tempB = twoToKth * 256;
|
|
tempB *= (m + 2); /* 4..32 */
|
|
fOut = tempA / tempB; /* 8 bit scale */
|
|
|
|
if (longMHz100 > fOut)
|
|
diff = longMHz100 - fOut;
|
|
else
|
|
diff = fOut - longMHz100;
|
|
|
|
if (diff < preDiff) {
|
|
save_m = m;
|
|
save_n = n;
|
|
preDiff = diff;
|
|
}
|
|
}
|
|
}
|
|
|
|
program_bits = (k << 6) + (save_m) + (save_n << 8);
|
|
}
|
|
|
|
pll->ics2595.program_bits = program_bits;
|
|
pll->ics2595.locationAddr = 0;
|
|
pll->ics2595.post_divider = 0;
|
|
pll->ics2595.period_in_ps = vclk_per;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 aty_pll_8398_to_var(const struct fb_info *info,
|
|
const union aty_pll *pll)
|
|
{
|
|
return (pll->ics2595.period_in_ps); /* default for now */
|
|
}
|
|
|
|
static void aty_set_pll_8398(const struct fb_info *info,
|
|
const union aty_pll *pll)
|
|
{
|
|
struct atyfb_par *par = (struct atyfb_par *) info->par;
|
|
u32 program_bits;
|
|
u32 locationAddr;
|
|
|
|
char old_crtc_ext_disp;
|
|
char tmp;
|
|
|
|
old_crtc_ext_disp = aty_ld_8(CRTC_GEN_CNTL + 3, par);
|
|
aty_st_8(CRTC_GEN_CNTL + 3,
|
|
old_crtc_ext_disp | (CRTC_EXT_DISP_EN >> 24), par);
|
|
|
|
program_bits = pll->ics2595.program_bits;
|
|
locationAddr = pll->ics2595.locationAddr;
|
|
|
|
/* Program clock */
|
|
tmp = aty_ld_8(DAC_CNTL, par);
|
|
aty_st_8(DAC_CNTL, tmp | DAC_EXT_SEL_RS2 | DAC_EXT_SEL_RS3, par);
|
|
|
|
aty_st_8(DAC_REGS, locationAddr, par);
|
|
aty_st_8(DAC_REGS + 1, (program_bits & 0xff00) >> 8, par);
|
|
aty_st_8(DAC_REGS + 1, (program_bits & 0xff), par);
|
|
|
|
tmp = aty_ld_8(DAC_CNTL, par);
|
|
aty_st_8(DAC_CNTL, (tmp & ~DAC_EXT_SEL_RS2) | DAC_EXT_SEL_RS3,
|
|
par);
|
|
|
|
(void) aty_ld_8(DAC_REGS, par); /* Clear DAC Counter */
|
|
aty_st_8(CRTC_GEN_CNTL + 3, old_crtc_ext_disp, par);
|
|
|
|
return;
|
|
}
|
|
|
|
const struct aty_pll_ops aty_pll_ch8398 = {
|
|
.var_to_pll = aty_var_to_pll_8398,
|
|
.pll_to_var = aty_pll_8398_to_var,
|
|
.set_pll = aty_set_pll_8398,
|
|
};
|
|
|
|
|
|
/*
|
|
* AT&T 20C408 Clock Chip
|
|
*/
|
|
|
|
static int aty_var_to_pll_408(const struct fb_info *info, u32 vclk_per,
|
|
u32 bpp, union aty_pll *pll)
|
|
{
|
|
u32 mhz100; /* in 0.01 MHz */
|
|
u32 program_bits;
|
|
/* u32 post_divider; */
|
|
u32 mach64MinFreq, mach64MaxFreq, mach64RefFreq;
|
|
u32 temp, tempB;
|
|
u16 remainder, preRemainder;
|
|
short divider = 0, tempA;
|
|
|
|
/* Calculate the programming word */
|
|
mhz100 = 100000000 / vclk_per;
|
|
mach64MinFreq = MIN_FREQ_2595;
|
|
mach64MaxFreq = MAX_FREQ_2595;
|
|
mach64RefFreq = REF_FREQ_2595; /* 14.32 MHz */
|
|
|
|
/* Calculate program word */
|
|
if (mhz100 == 0)
|
|
program_bits = 0xFF;
|
|
else {
|
|
if (mhz100 < mach64MinFreq)
|
|
mhz100 = mach64MinFreq;
|
|
if (mhz100 > mach64MaxFreq)
|
|
mhz100 = mach64MaxFreq;
|
|
|
|
while (mhz100 < (mach64MinFreq << 3)) {
|
|
mhz100 <<= 1;
|
|
divider += 0x40;
|
|
}
|
|
|
|
temp = (unsigned int) mhz100;
|
|
temp = (unsigned int) (temp * (MIN_N_408 + 2));
|
|
temp -= ((short) (mach64RefFreq << 1));
|
|
|
|
tempA = MIN_N_408;
|
|
preRemainder = 0xFFFF;
|
|
|
|
do {
|
|
tempB = temp;
|
|
remainder = tempB % mach64RefFreq;
|
|
tempB = tempB / mach64RefFreq;
|
|
if (((tempB & 0xFFFF) <= 255)
|
|
&& (remainder <= preRemainder)) {
|
|
preRemainder = remainder;
|
|
divider &= ~0x3f;
|
|
divider |= tempA;
|
|
divider =
|
|
(divider & 0x00FF) +
|
|
((tempB & 0xFF) << 8);
|
|
}
|
|
temp += mhz100;
|
|
tempA++;
|
|
} while (tempA <= 32);
|
|
|
|
program_bits = divider;
|
|
}
|
|
|
|
pll->ics2595.program_bits = program_bits;
|
|
pll->ics2595.locationAddr = 0;
|
|
pll->ics2595.post_divider = divider; /* fuer nix */
|
|
pll->ics2595.period_in_ps = vclk_per;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 aty_pll_408_to_var(const struct fb_info *info,
|
|
const union aty_pll *pll)
|
|
{
|
|
return (pll->ics2595.period_in_ps); /* default for now */
|
|
}
|
|
|
|
static void aty_set_pll_408(const struct fb_info *info,
|
|
const union aty_pll *pll)
|
|
{
|
|
struct atyfb_par *par = (struct atyfb_par *) info->par;
|
|
u32 program_bits;
|
|
u32 locationAddr;
|
|
|
|
u8 tmpA, tmpB, tmpC;
|
|
char old_crtc_ext_disp;
|
|
|
|
old_crtc_ext_disp = aty_ld_8(CRTC_GEN_CNTL + 3, par);
|
|
aty_st_8(CRTC_GEN_CNTL + 3,
|
|
old_crtc_ext_disp | (CRTC_EXT_DISP_EN >> 24), par);
|
|
|
|
program_bits = pll->ics2595.program_bits;
|
|
locationAddr = pll->ics2595.locationAddr;
|
|
|
|
/* Program clock */
|
|
aty_dac_waste4(par);
|
|
tmpB = aty_ld_8(DAC_REGS + 2, par) | 1;
|
|
aty_dac_waste4(par);
|
|
aty_st_8(DAC_REGS + 2, tmpB, par);
|
|
|
|
tmpA = tmpB;
|
|
tmpC = tmpA;
|
|
tmpA |= 8;
|
|
tmpB = 1;
|
|
|
|
aty_st_8(DAC_REGS, tmpB, par);
|
|
aty_st_8(DAC_REGS + 2, tmpA, par);
|
|
|
|
udelay(400); /* delay for 400 us */
|
|
|
|
locationAddr = (locationAddr << 2) + 0x40;
|
|
tmpB = locationAddr;
|
|
tmpA = program_bits >> 8;
|
|
|
|
aty_st_8(DAC_REGS, tmpB, par);
|
|
aty_st_8(DAC_REGS + 2, tmpA, par);
|
|
|
|
tmpB = locationAddr + 1;
|
|
tmpA = (u8) program_bits;
|
|
|
|
aty_st_8(DAC_REGS, tmpB, par);
|
|
aty_st_8(DAC_REGS + 2, tmpA, par);
|
|
|
|
tmpB = locationAddr + 2;
|
|
tmpA = 0x77;
|
|
|
|
aty_st_8(DAC_REGS, tmpB, par);
|
|
aty_st_8(DAC_REGS + 2, tmpA, par);
|
|
|
|
udelay(400); /* delay for 400 us */
|
|
tmpA = tmpC & (~(1 | 8));
|
|
tmpB = 1;
|
|
|
|
aty_st_8(DAC_REGS, tmpB, par);
|
|
aty_st_8(DAC_REGS + 2, tmpA, par);
|
|
|
|
(void) aty_ld_8(DAC_REGS, par); /* Clear DAC Counter */
|
|
aty_st_8(CRTC_GEN_CNTL + 3, old_crtc_ext_disp, par);
|
|
return;
|
|
}
|
|
|
|
const struct aty_pll_ops aty_pll_att20c408 = {
|
|
.var_to_pll = aty_var_to_pll_408,
|
|
.pll_to_var = aty_pll_408_to_var,
|
|
.set_pll = aty_set_pll_408,
|
|
};
|
|
|
|
|
|
/*
|
|
* Unsupported DAC and Clock Chip
|
|
*/
|
|
|
|
static int aty_set_dac_unsupported(const struct fb_info *info,
|
|
const union aty_pll *pll, u32 bpp,
|
|
u32 accel)
|
|
{
|
|
struct atyfb_par *par = (struct atyfb_par *) info->par;
|
|
|
|
aty_st_le32(BUS_CNTL, 0x890e20f1, par);
|
|
aty_st_le32(DAC_CNTL, 0x47052100, par);
|
|
/* new in 2.2.3p1 from Geert. ???????? */
|
|
aty_st_le32(BUS_CNTL, 0x590e10ff, par);
|
|
aty_st_le32(DAC_CNTL, 0x47012100, par);
|
|
return 0;
|
|
}
|
|
|
|
static int dummy(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
const struct aty_dac_ops aty_dac_unsupported = {
|
|
.set_dac = aty_set_dac_unsupported,
|
|
};
|
|
|
|
const struct aty_pll_ops aty_pll_unsupported = {
|
|
.var_to_pll = (void *) dummy,
|
|
.pll_to_var = (void *) dummy,
|
|
.set_pll = (void *) dummy,
|
|
};
|