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path: root/drivers/video/fbdev/imsttfb.c
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Diffstat (limited to 'drivers/video/fbdev/imsttfb.c')
-rw-r--r--drivers/video/fbdev/imsttfb.c1638
1 files changed, 1638 insertions, 0 deletions
diff --git a/drivers/video/fbdev/imsttfb.c b/drivers/video/fbdev/imsttfb.c
new file mode 100644
index 000000000..e559c8444
--- /dev/null
+++ b/drivers/video/fbdev/imsttfb.c
@@ -0,0 +1,1638 @@
+/*
+ * drivers/video/imsttfb.c -- frame buffer device for IMS TwinTurbo
+ *
+ * This file is derived from the powermac console "imstt" driver:
+ * Copyright (C) 1997 Sigurdur Asgeirsson
+ * With additional hacking by Jeffrey Kuskin (jsk@mojave.stanford.edu)
+ * Modified by Danilo Beuche 1998
+ * Some register values added by Damien Doligez, INRIA Rocquencourt
+ * Various cleanups by Paul Mundt (lethal@chaoticdreams.org)
+ *
+ * This file was written by Ryan Nielsen (ran@krazynet.com)
+ * Most of the frame buffer device stuff was copied from atyfb.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <linux/uaccess.h>
+
+#if defined(CONFIG_PPC_PMAC)
+#include <linux/nvram.h>
+#include "macmodes.h"
+#endif
+
+#ifndef __powerpc__
+#define eieio() /* Enforce In-order Execution of I/O */
+#endif
+
+/* TwinTurbo (Cosmo) registers */
+enum {
+ S1SA = 0, /* 0x00 */
+ S2SA = 1, /* 0x04 */
+ SP = 2, /* 0x08 */
+ DSA = 3, /* 0x0C */
+ CNT = 4, /* 0x10 */
+ DP_OCTL = 5, /* 0x14 */
+ CLR = 6, /* 0x18 */
+ BI = 8, /* 0x20 */
+ MBC = 9, /* 0x24 */
+ BLTCTL = 10, /* 0x28 */
+
+ /* Scan Timing Generator Registers */
+ HES = 12, /* 0x30 */
+ HEB = 13, /* 0x34 */
+ HSB = 14, /* 0x38 */
+ HT = 15, /* 0x3C */
+ VES = 16, /* 0x40 */
+ VEB = 17, /* 0x44 */
+ VSB = 18, /* 0x48 */
+ VT = 19, /* 0x4C */
+ HCIV = 20, /* 0x50 */
+ VCIV = 21, /* 0x54 */
+ TCDR = 22, /* 0x58 */
+ VIL = 23, /* 0x5C */
+ STGCTL = 24, /* 0x60 */
+
+ /* Screen Refresh Generator Registers */
+ SSR = 25, /* 0x64 */
+ HRIR = 26, /* 0x68 */
+ SPR = 27, /* 0x6C */
+ CMR = 28, /* 0x70 */
+ SRGCTL = 29, /* 0x74 */
+
+ /* RAM Refresh Generator Registers */
+ RRCIV = 30, /* 0x78 */
+ RRSC = 31, /* 0x7C */
+ RRCR = 34, /* 0x88 */
+
+ /* System Registers */
+ GIOE = 32, /* 0x80 */
+ GIO = 33, /* 0x84 */
+ SCR = 35, /* 0x8C */
+ SSTATUS = 36, /* 0x90 */
+ PRC = 37, /* 0x94 */
+
+#if 0
+ /* PCI Registers */
+ DVID = 0x00000000L,
+ SC = 0x00000004L,
+ CCR = 0x00000008L,
+ OG = 0x0000000CL,
+ BARM = 0x00000010L,
+ BARER = 0x00000030L,
+#endif
+};
+
+/* IBM 624 RAMDAC Direct Registers */
+enum {
+ PADDRW = 0x00,
+ PDATA = 0x04,
+ PPMASK = 0x08,
+ PADDRR = 0x0c,
+ PIDXLO = 0x10,
+ PIDXHI = 0x14,
+ PIDXDATA= 0x18,
+ PIDXCTL = 0x1c
+};
+
+/* IBM 624 RAMDAC Indirect Registers */
+enum {
+ CLKCTL = 0x02, /* (0x01) Miscellaneous Clock Control */
+ SYNCCTL = 0x03, /* (0x00) Sync Control */
+ HSYNCPOS = 0x04, /* (0x00) Horizontal Sync Position */
+ PWRMNGMT = 0x05, /* (0x00) Power Management */
+ DACOP = 0x06, /* (0x02) DAC Operation */
+ PALETCTL = 0x07, /* (0x00) Palette Control */
+ SYSCLKCTL = 0x08, /* (0x01) System Clock Control */
+ PIXFMT = 0x0a, /* () Pixel Format [bpp >> 3 + 2] */
+ BPP8 = 0x0b, /* () 8 Bits/Pixel Control */
+ BPP16 = 0x0c, /* () 16 Bits/Pixel Control [bit 1=1 for 565] */
+ BPP24 = 0x0d, /* () 24 Bits/Pixel Control */
+ BPP32 = 0x0e, /* () 32 Bits/Pixel Control */
+ PIXCTL1 = 0x10, /* (0x05) Pixel PLL Control 1 */
+ PIXCTL2 = 0x11, /* (0x00) Pixel PLL Control 2 */
+ SYSCLKN = 0x15, /* () System Clock N (System PLL Reference Divider) */
+ SYSCLKM = 0x16, /* () System Clock M (System PLL VCO Divider) */
+ SYSCLKP = 0x17, /* () System Clock P */
+ SYSCLKC = 0x18, /* () System Clock C */
+ /*
+ * Dot clock rate is 20MHz * (m + 1) / ((n + 1) * (p ? 2 * p : 1)
+ * c is charge pump bias which depends on the VCO frequency
+ */
+ PIXM0 = 0x20, /* () Pixel M 0 */
+ PIXN0 = 0x21, /* () Pixel N 0 */
+ PIXP0 = 0x22, /* () Pixel P 0 */
+ PIXC0 = 0x23, /* () Pixel C 0 */
+ CURSCTL = 0x30, /* (0x00) Cursor Control */
+ CURSXLO = 0x31, /* () Cursor X position, low 8 bits */
+ CURSXHI = 0x32, /* () Cursor X position, high 8 bits */
+ CURSYLO = 0x33, /* () Cursor Y position, low 8 bits */
+ CURSYHI = 0x34, /* () Cursor Y position, high 8 bits */
+ CURSHOTX = 0x35, /* () Cursor Hot Spot X */
+ CURSHOTY = 0x36, /* () Cursor Hot Spot Y */
+ CURSACCTL = 0x37, /* () Advanced Cursor Control Enable */
+ CURSACATTR = 0x38, /* () Advanced Cursor Attribute */
+ CURS1R = 0x40, /* () Cursor 1 Red */
+ CURS1G = 0x41, /* () Cursor 1 Green */
+ CURS1B = 0x42, /* () Cursor 1 Blue */
+ CURS2R = 0x43, /* () Cursor 2 Red */
+ CURS2G = 0x44, /* () Cursor 2 Green */
+ CURS2B = 0x45, /* () Cursor 2 Blue */
+ CURS3R = 0x46, /* () Cursor 3 Red */
+ CURS3G = 0x47, /* () Cursor 3 Green */
+ CURS3B = 0x48, /* () Cursor 3 Blue */
+ BORDR = 0x60, /* () Border Color Red */
+ BORDG = 0x61, /* () Border Color Green */
+ BORDB = 0x62, /* () Border Color Blue */
+ MISCTL1 = 0x70, /* (0x00) Miscellaneous Control 1 */
+ MISCTL2 = 0x71, /* (0x00) Miscellaneous Control 2 */
+ MISCTL3 = 0x72, /* (0x00) Miscellaneous Control 3 */
+ KEYCTL = 0x78 /* (0x00) Key Control/DB Operation */
+};
+
+/* TI TVP 3030 RAMDAC Direct Registers */
+enum {
+ TVPADDRW = 0x00, /* 0 Palette/Cursor RAM Write Address/Index */
+ TVPPDATA = 0x04, /* 1 Palette Data RAM Data */
+ TVPPMASK = 0x08, /* 2 Pixel Read-Mask */
+ TVPPADRR = 0x0c, /* 3 Palette/Cursor RAM Read Address */
+ TVPCADRW = 0x10, /* 4 Cursor/Overscan Color Write Address */
+ TVPCDATA = 0x14, /* 5 Cursor/Overscan Color Data */
+ /* 6 reserved */
+ TVPCADRR = 0x1c, /* 7 Cursor/Overscan Color Read Address */
+ /* 8 reserved */
+ TVPDCCTL = 0x24, /* 9 Direct Cursor Control */
+ TVPIDATA = 0x28, /* 10 Index Data */
+ TVPCRDAT = 0x2c, /* 11 Cursor RAM Data */
+ TVPCXPOL = 0x30, /* 12 Cursor-Position X LSB */
+ TVPCXPOH = 0x34, /* 13 Cursor-Position X MSB */
+ TVPCYPOL = 0x38, /* 14 Cursor-Position Y LSB */
+ TVPCYPOH = 0x3c, /* 15 Cursor-Position Y MSB */
+};
+
+/* TI TVP 3030 RAMDAC Indirect Registers */
+enum {
+ TVPIRREV = 0x01, /* Silicon Revision [RO] */
+ TVPIRICC = 0x06, /* Indirect Cursor Control (0x00) */
+ TVPIRBRC = 0x07, /* Byte Router Control (0xe4) */
+ TVPIRLAC = 0x0f, /* Latch Control (0x06) */
+ TVPIRTCC = 0x18, /* True Color Control (0x80) */
+ TVPIRMXC = 0x19, /* Multiplex Control (0x98) */
+ TVPIRCLS = 0x1a, /* Clock Selection (0x07) */
+ TVPIRPPG = 0x1c, /* Palette Page (0x00) */
+ TVPIRGEC = 0x1d, /* General Control (0x00) */
+ TVPIRMIC = 0x1e, /* Miscellaneous Control (0x00) */
+ TVPIRPLA = 0x2c, /* PLL Address */
+ TVPIRPPD = 0x2d, /* Pixel Clock PLL Data */
+ TVPIRMPD = 0x2e, /* Memory Clock PLL Data */
+ TVPIRLPD = 0x2f, /* Loop Clock PLL Data */
+ TVPIRCKL = 0x30, /* Color-Key Overlay Low */
+ TVPIRCKH = 0x31, /* Color-Key Overlay High */
+ TVPIRCRL = 0x32, /* Color-Key Red Low */
+ TVPIRCRH = 0x33, /* Color-Key Red High */
+ TVPIRCGL = 0x34, /* Color-Key Green Low */
+ TVPIRCGH = 0x35, /* Color-Key Green High */
+ TVPIRCBL = 0x36, /* Color-Key Blue Low */
+ TVPIRCBH = 0x37, /* Color-Key Blue High */
+ TVPIRCKC = 0x38, /* Color-Key Control (0x00) */
+ TVPIRMLC = 0x39, /* MCLK/Loop Clock Control (0x18) */
+ TVPIRSEN = 0x3a, /* Sense Test (0x00) */
+ TVPIRTMD = 0x3b, /* Test Mode Data */
+ TVPIRRML = 0x3c, /* CRC Remainder LSB [RO] */
+ TVPIRRMM = 0x3d, /* CRC Remainder MSB [RO] */
+ TVPIRRMS = 0x3e, /* CRC Bit Select [WO] */
+ TVPIRDID = 0x3f, /* Device ID [RO] (0x30) */
+ TVPIRRES = 0xff /* Software Reset [WO] */
+};
+
+struct initvalues {
+ __u8 addr, value;
+};
+
+static struct initvalues ibm_initregs[] = {
+ { CLKCTL, 0x21 },
+ { SYNCCTL, 0x00 },
+ { HSYNCPOS, 0x00 },
+ { PWRMNGMT, 0x00 },
+ { DACOP, 0x02 },
+ { PALETCTL, 0x00 },
+ { SYSCLKCTL, 0x01 },
+
+ /*
+ * Note that colors in X are correct only if all video data is
+ * passed through the palette in the DAC. That is, "indirect
+ * color" must be configured. This is the case for the IBM DAC
+ * used in the 2MB and 4MB cards, at least.
+ */
+ { BPP8, 0x00 },
+ { BPP16, 0x01 },
+ { BPP24, 0x00 },
+ { BPP32, 0x00 },
+
+ { PIXCTL1, 0x05 },
+ { PIXCTL2, 0x00 },
+ { SYSCLKN, 0x08 },
+ { SYSCLKM, 0x4f },
+ { SYSCLKP, 0x00 },
+ { SYSCLKC, 0x00 },
+ { CURSCTL, 0x00 },
+ { CURSACCTL, 0x01 },
+ { CURSACATTR, 0xa8 },
+ { CURS1R, 0xff },
+ { CURS1G, 0xff },
+ { CURS1B, 0xff },
+ { CURS2R, 0xff },
+ { CURS2G, 0xff },
+ { CURS2B, 0xff },
+ { CURS3R, 0xff },
+ { CURS3G, 0xff },
+ { CURS3B, 0xff },
+ { BORDR, 0xff },
+ { BORDG, 0xff },
+ { BORDB, 0xff },
+ { MISCTL1, 0x01 },
+ { MISCTL2, 0x45 },
+ { MISCTL3, 0x00 },
+ { KEYCTL, 0x00 }
+};
+
+static struct initvalues tvp_initregs[] = {
+ { TVPIRICC, 0x00 },
+ { TVPIRBRC, 0xe4 },
+ { TVPIRLAC, 0x06 },
+ { TVPIRTCC, 0x80 },
+ { TVPIRMXC, 0x4d },
+ { TVPIRCLS, 0x05 },
+ { TVPIRPPG, 0x00 },
+ { TVPIRGEC, 0x00 },
+ { TVPIRMIC, 0x08 },
+ { TVPIRCKL, 0xff },
+ { TVPIRCKH, 0xff },
+ { TVPIRCRL, 0xff },
+ { TVPIRCRH, 0xff },
+ { TVPIRCGL, 0xff },
+ { TVPIRCGH, 0xff },
+ { TVPIRCBL, 0xff },
+ { TVPIRCBH, 0xff },
+ { TVPIRCKC, 0x00 },
+ { TVPIRPLA, 0x00 },
+ { TVPIRPPD, 0xc0 },
+ { TVPIRPPD, 0xd5 },
+ { TVPIRPPD, 0xea },
+ { TVPIRPLA, 0x00 },
+ { TVPIRMPD, 0xb9 },
+ { TVPIRMPD, 0x3a },
+ { TVPIRMPD, 0xb1 },
+ { TVPIRPLA, 0x00 },
+ { TVPIRLPD, 0xc1 },
+ { TVPIRLPD, 0x3d },
+ { TVPIRLPD, 0xf3 },
+};
+
+struct imstt_regvals {
+ __u32 pitch;
+ __u16 hes, heb, hsb, ht, ves, veb, vsb, vt, vil;
+ __u8 pclk_m, pclk_n, pclk_p;
+ /* Values of the tvp which change depending on colormode x resolution */
+ __u8 mlc[3]; /* Memory Loop Config 0x39 */
+ __u8 lckl_p[3]; /* P value of LCKL PLL */
+};
+
+struct imstt_par {
+ struct imstt_regvals init;
+ __u32 __iomem *dc_regs;
+ unsigned long cmap_regs_phys;
+ __u8 *cmap_regs;
+ __u32 ramdac;
+ __u32 palette[16];
+};
+
+enum {
+ IBM = 0,
+ TVP = 1
+};
+
+#define INIT_BPP 8
+#define INIT_XRES 640
+#define INIT_YRES 480
+
+static int inverse = 0;
+static char fontname[40] __initdata = { 0 };
+#if defined(CONFIG_PPC_PMAC)
+static signed char init_vmode = -1, init_cmode = -1;
+#endif
+
+static struct imstt_regvals tvp_reg_init_2 = {
+ 512,
+ 0x0002, 0x0006, 0x0026, 0x0028, 0x0003, 0x0016, 0x0196, 0x0197, 0x0196,
+ 0xec, 0x2a, 0xf3,
+ { 0x3c, 0x3b, 0x39 }, { 0xf3, 0xf3, 0xf3 }
+};
+
+static struct imstt_regvals tvp_reg_init_6 = {
+ 640,
+ 0x0004, 0x0009, 0x0031, 0x0036, 0x0003, 0x002a, 0x020a, 0x020d, 0x020a,
+ 0xef, 0x2e, 0xb2,
+ { 0x39, 0x39, 0x38 }, { 0xf3, 0xf3, 0xf3 }
+};
+
+static struct imstt_regvals tvp_reg_init_12 = {
+ 800,
+ 0x0005, 0x000e, 0x0040, 0x0042, 0x0003, 0x018, 0x270, 0x271, 0x270,
+ 0xf6, 0x2e, 0xf2,
+ { 0x3a, 0x39, 0x38 }, { 0xf3, 0xf3, 0xf3 }
+};
+
+static struct imstt_regvals tvp_reg_init_13 = {
+ 832,
+ 0x0004, 0x0011, 0x0045, 0x0048, 0x0003, 0x002a, 0x029a, 0x029b, 0x0000,
+ 0xfe, 0x3e, 0xf1,
+ { 0x39, 0x38, 0x38 }, { 0xf3, 0xf3, 0xf2 }
+};
+
+static struct imstt_regvals tvp_reg_init_17 = {
+ 1024,
+ 0x0006, 0x0210, 0x0250, 0x0053, 0x1003, 0x0021, 0x0321, 0x0324, 0x0000,
+ 0xfc, 0x3a, 0xf1,
+ { 0x39, 0x38, 0x38 }, { 0xf3, 0xf3, 0xf2 }
+};
+
+static struct imstt_regvals tvp_reg_init_18 = {
+ 1152,
+ 0x0009, 0x0011, 0x059, 0x5b, 0x0003, 0x0031, 0x0397, 0x039a, 0x0000,
+ 0xfd, 0x3a, 0xf1,
+ { 0x39, 0x38, 0x38 }, { 0xf3, 0xf3, 0xf2 }
+};
+
+static struct imstt_regvals tvp_reg_init_19 = {
+ 1280,
+ 0x0009, 0x0016, 0x0066, 0x0069, 0x0003, 0x0027, 0x03e7, 0x03e8, 0x03e7,
+ 0xf7, 0x36, 0xf0,
+ { 0x38, 0x38, 0x38 }, { 0xf3, 0xf2, 0xf1 }
+};
+
+static struct imstt_regvals tvp_reg_init_20 = {
+ 1280,
+ 0x0009, 0x0018, 0x0068, 0x006a, 0x0003, 0x0029, 0x0429, 0x042a, 0x0000,
+ 0xf0, 0x2d, 0xf0,
+ { 0x38, 0x38, 0x38 }, { 0xf3, 0xf2, 0xf1 }
+};
+
+/*
+ * PCI driver prototypes
+ */
+static int imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
+static void imsttfb_remove(struct pci_dev *pdev);
+
+/*
+ * Register access
+ */
+static inline u32 read_reg_le32(volatile u32 __iomem *base, int regindex)
+{
+#ifdef __powerpc__
+ return in_le32(base + regindex);
+#else
+ return readl(base + regindex);
+#endif
+}
+
+static inline void write_reg_le32(volatile u32 __iomem *base, int regindex, u32 val)
+{
+#ifdef __powerpc__
+ out_le32(base + regindex, val);
+#else
+ writel(val, base + regindex);
+#endif
+}
+
+static __u32
+getclkMHz(struct imstt_par *par)
+{
+ __u32 clk_m, clk_n, clk_p;
+
+ clk_m = par->init.pclk_m;
+ clk_n = par->init.pclk_n;
+ clk_p = par->init.pclk_p;
+
+ return 20 * (clk_m + 1) / ((clk_n + 1) * (clk_p ? 2 * clk_p : 1));
+}
+
+static void
+setclkMHz(struct imstt_par *par, __u32 MHz)
+{
+ __u32 clk_m, clk_n, x, stage, spilled;
+
+ clk_m = clk_n = 0;
+ stage = spilled = 0;
+ for (;;) {
+ switch (stage) {
+ case 0:
+ clk_m++;
+ break;
+ case 1:
+ clk_n++;
+ break;
+ }
+ x = 20 * (clk_m + 1) / (clk_n + 1);
+ if (x == MHz)
+ break;
+ if (x > MHz) {
+ spilled = 1;
+ stage = 1;
+ } else if (spilled && x < MHz) {
+ stage = 0;
+ }
+ }
+
+ par->init.pclk_m = clk_m;
+ par->init.pclk_n = clk_n;
+ par->init.pclk_p = 0;
+}
+
+static struct imstt_regvals *
+compute_imstt_regvals_ibm(struct imstt_par *par, int xres, int yres)
+{
+ struct imstt_regvals *init = &par->init;
+ __u32 MHz, hes, heb, veb, htp, vtp;
+
+ switch (xres) {
+ case 640:
+ hes = 0x0008; heb = 0x0012; veb = 0x002a; htp = 10; vtp = 2;
+ MHz = 30 /* .25 */ ;
+ break;
+ case 832:
+ hes = 0x0005; heb = 0x0020; veb = 0x0028; htp = 8; vtp = 3;
+ MHz = 57 /* .27_ */ ;
+ break;
+ case 1024:
+ hes = 0x000a; heb = 0x001c; veb = 0x0020; htp = 8; vtp = 3;
+ MHz = 80;
+ break;
+ case 1152:
+ hes = 0x0012; heb = 0x0022; veb = 0x0031; htp = 4; vtp = 3;
+ MHz = 101 /* .6_ */ ;
+ break;
+ case 1280:
+ hes = 0x0012; heb = 0x002f; veb = 0x0029; htp = 4; vtp = 1;
+ MHz = yres == 960 ? 126 : 135;
+ break;
+ case 1600:
+ hes = 0x0018; heb = 0x0040; veb = 0x002a; htp = 4; vtp = 3;
+ MHz = 200;
+ break;
+ default:
+ return NULL;
+ }
+
+ setclkMHz(par, MHz);
+
+ init->hes = hes;
+ init->heb = heb;
+ init->hsb = init->heb + (xres >> 3);
+ init->ht = init->hsb + htp;
+ init->ves = 0x0003;
+ init->veb = veb;
+ init->vsb = init->veb + yres;
+ init->vt = init->vsb + vtp;
+ init->vil = init->vsb;
+
+ init->pitch = xres;
+ return init;
+}
+
+static struct imstt_regvals *
+compute_imstt_regvals_tvp(struct imstt_par *par, int xres, int yres)
+{
+ struct imstt_regvals *init;
+
+ switch (xres) {
+ case 512:
+ init = &tvp_reg_init_2;
+ break;
+ case 640:
+ init = &tvp_reg_init_6;
+ break;
+ case 800:
+ init = &tvp_reg_init_12;
+ break;
+ case 832:
+ init = &tvp_reg_init_13;
+ break;
+ case 1024:
+ init = &tvp_reg_init_17;
+ break;
+ case 1152:
+ init = &tvp_reg_init_18;
+ break;
+ case 1280:
+ init = yres == 960 ? &tvp_reg_init_19 : &tvp_reg_init_20;
+ break;
+ default:
+ return NULL;
+ }
+ par->init = *init;
+ return init;
+}
+
+static struct imstt_regvals *
+compute_imstt_regvals (struct imstt_par *par, u_int xres, u_int yres)
+{
+ if (par->ramdac == IBM)
+ return compute_imstt_regvals_ibm(par, xres, yres);
+ else
+ return compute_imstt_regvals_tvp(par, xres, yres);
+}
+
+static void
+set_imstt_regvals_ibm (struct imstt_par *par, u_int bpp)
+{
+ struct imstt_regvals *init = &par->init;
+ __u8 pformat = (bpp >> 3) + 2;
+
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = PIXM0; eieio();
+ par->cmap_regs[PIDXDATA] = init->pclk_m;eieio();
+ par->cmap_regs[PIDXLO] = PIXN0; eieio();
+ par->cmap_regs[PIDXDATA] = init->pclk_n;eieio();
+ par->cmap_regs[PIDXLO] = PIXP0; eieio();
+ par->cmap_regs[PIDXDATA] = init->pclk_p;eieio();
+ par->cmap_regs[PIDXLO] = PIXC0; eieio();
+ par->cmap_regs[PIDXDATA] = 0x02; eieio();
+
+ par->cmap_regs[PIDXLO] = PIXFMT; eieio();
+ par->cmap_regs[PIDXDATA] = pformat; eieio();
+}
+
+static void
+set_imstt_regvals_tvp (struct imstt_par *par, u_int bpp)
+{
+ struct imstt_regvals *init = &par->init;
+ __u8 tcc, mxc, lckl_n, mic;
+ __u8 mlc, lckl_p;
+
+ switch (bpp) {
+ default:
+ case 8:
+ tcc = 0x80;
+ mxc = 0x4d;
+ lckl_n = 0xc1;
+ mlc = init->mlc[0];
+ lckl_p = init->lckl_p[0];
+ break;
+ case 16:
+ tcc = 0x44;
+ mxc = 0x55;
+ lckl_n = 0xe1;
+ mlc = init->mlc[1];
+ lckl_p = init->lckl_p[1];
+ break;
+ case 24:
+ tcc = 0x5e;
+ mxc = 0x5d;
+ lckl_n = 0xf1;
+ mlc = init->mlc[2];
+ lckl_p = init->lckl_p[2];
+ break;
+ case 32:
+ tcc = 0x46;
+ mxc = 0x5d;
+ lckl_n = 0xf1;
+ mlc = init->mlc[2];
+ lckl_p = init->lckl_p[2];
+ break;
+ }
+ mic = 0x08;
+
+ par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
+ par->cmap_regs[TVPIDATA] = 0x00; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRPPD; eieio();
+ par->cmap_regs[TVPIDATA] = init->pclk_m; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRPPD; eieio();
+ par->cmap_regs[TVPIDATA] = init->pclk_n; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRPPD; eieio();
+ par->cmap_regs[TVPIDATA] = init->pclk_p; eieio();
+
+ par->cmap_regs[TVPADDRW] = TVPIRTCC; eieio();
+ par->cmap_regs[TVPIDATA] = tcc; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRMXC; eieio();
+ par->cmap_regs[TVPIDATA] = mxc; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRMIC; eieio();
+ par->cmap_regs[TVPIDATA] = mic; eieio();
+
+ par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
+ par->cmap_regs[TVPIDATA] = 0x00; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRLPD; eieio();
+ par->cmap_regs[TVPIDATA] = lckl_n; eieio();
+
+ par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
+ par->cmap_regs[TVPIDATA] = 0x15; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRMLC; eieio();
+ par->cmap_regs[TVPIDATA] = mlc; eieio();
+
+ par->cmap_regs[TVPADDRW] = TVPIRPLA; eieio();
+ par->cmap_regs[TVPIDATA] = 0x2a; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRLPD; eieio();
+ par->cmap_regs[TVPIDATA] = lckl_p; eieio();
+}
+
+static void
+set_imstt_regvals (struct fb_info *info, u_int bpp)
+{
+ struct imstt_par *par = info->par;
+ struct imstt_regvals *init = &par->init;
+ __u32 ctl, pitch, byteswap, scr;
+
+ if (par->ramdac == IBM)
+ set_imstt_regvals_ibm(par, bpp);
+ else
+ set_imstt_regvals_tvp(par, bpp);
+
+ /*
+ * From what I (jsk) can gather poking around with MacsBug,
+ * bits 8 and 9 in the SCR register control endianness
+ * correction (byte swapping). These bits must be set according
+ * to the color depth as follows:
+ * Color depth Bit 9 Bit 8
+ * ========== ===== =====
+ * 8bpp 0 0
+ * 16bpp 0 1
+ * 32bpp 1 1
+ */
+ switch (bpp) {
+ default:
+ case 8:
+ ctl = 0x17b1;
+ pitch = init->pitch >> 2;
+ byteswap = 0x000;
+ break;
+ case 16:
+ ctl = 0x17b3;
+ pitch = init->pitch >> 1;
+ byteswap = 0x100;
+ break;
+ case 24:
+ ctl = 0x17b9;
+ pitch = init->pitch - (init->pitch >> 2);
+ byteswap = 0x200;
+ break;
+ case 32:
+ ctl = 0x17b5;
+ pitch = init->pitch;
+ byteswap = 0x300;
+ break;
+ }
+ if (par->ramdac == TVP)
+ ctl -= 0x30;
+
+ write_reg_le32(par->dc_regs, HES, init->hes);
+ write_reg_le32(par->dc_regs, HEB, init->heb);
+ write_reg_le32(par->dc_regs, HSB, init->hsb);
+ write_reg_le32(par->dc_regs, HT, init->ht);
+ write_reg_le32(par->dc_regs, VES, init->ves);
+ write_reg_le32(par->dc_regs, VEB, init->veb);
+ write_reg_le32(par->dc_regs, VSB, init->vsb);
+ write_reg_le32(par->dc_regs, VT, init->vt);
+ write_reg_le32(par->dc_regs, VIL, init->vil);
+ write_reg_le32(par->dc_regs, HCIV, 1);
+ write_reg_le32(par->dc_regs, VCIV, 1);
+ write_reg_le32(par->dc_regs, TCDR, 4);
+ write_reg_le32(par->dc_regs, RRCIV, 1);
+ write_reg_le32(par->dc_regs, RRSC, 0x980);
+ write_reg_le32(par->dc_regs, RRCR, 0x11);
+
+ if (par->ramdac == IBM) {
+ write_reg_le32(par->dc_regs, HRIR, 0x0100);
+ write_reg_le32(par->dc_regs, CMR, 0x00ff);
+ write_reg_le32(par->dc_regs, SRGCTL, 0x0073);
+ } else {
+ write_reg_le32(par->dc_regs, HRIR, 0x0200);
+ write_reg_le32(par->dc_regs, CMR, 0x01ff);
+ write_reg_le32(par->dc_regs, SRGCTL, 0x0003);
+ }
+
+ switch (info->fix.smem_len) {
+ case 0x200000:
+ scr = 0x059d | byteswap;
+ break;
+ /* case 0x400000:
+ case 0x800000: */
+ default:
+ pitch >>= 1;
+ scr = 0x150dd | byteswap;
+ break;
+ }
+
+ write_reg_le32(par->dc_regs, SCR, scr);
+ write_reg_le32(par->dc_regs, SPR, pitch);
+ write_reg_le32(par->dc_regs, STGCTL, ctl);
+}
+
+static inline void
+set_offset (struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ struct imstt_par *par = info->par;
+ __u32 off = var->yoffset * (info->fix.line_length >> 3)
+ + ((var->xoffset * (info->var.bits_per_pixel >> 3)) >> 3);
+ write_reg_le32(par->dc_regs, SSR, off);
+}
+
+static inline void
+set_555 (struct imstt_par *par)
+{
+ if (par->ramdac == IBM) {
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = BPP16; eieio();
+ par->cmap_regs[PIDXDATA] = 0x01; eieio();
+ } else {
+ par->cmap_regs[TVPADDRW] = TVPIRTCC; eieio();
+ par->cmap_regs[TVPIDATA] = 0x44; eieio();
+ }
+}
+
+static inline void
+set_565 (struct imstt_par *par)
+{
+ if (par->ramdac == IBM) {
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = BPP16; eieio();
+ par->cmap_regs[PIDXDATA] = 0x03; eieio();
+ } else {
+ par->cmap_regs[TVPADDRW] = TVPIRTCC; eieio();
+ par->cmap_regs[TVPIDATA] = 0x45; eieio();
+ }
+}
+
+static int
+imsttfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ if ((var->bits_per_pixel != 8 && var->bits_per_pixel != 16
+ && var->bits_per_pixel != 24 && var->bits_per_pixel != 32)
+ || var->xres_virtual < var->xres || var->yres_virtual < var->yres
+ || var->nonstd
+ || (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
+ return -EINVAL;
+
+ if ((var->xres * var->yres) * (var->bits_per_pixel >> 3) > info->fix.smem_len
+ || (var->xres_virtual * var->yres_virtual) * (var->bits_per_pixel >> 3) > info->fix.smem_len)
+ return -EINVAL;
+
+ switch (var->bits_per_pixel) {
+ case 8:
+ var->red.offset = 0;
+ var->red.length = 8;
+ var->green.offset = 0;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ break;
+ case 16: /* RGB 555 or 565 */
+ if (var->green.length != 6)
+ var->red.offset = 10;
+ var->red.length = 5;
+ var->green.offset = 5;
+ if (var->green.length != 6)
+ var->green.length = 5;
+ var->blue.offset = 0;
+ var->blue.length = 5;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ break;
+ case 24: /* RGB 888 */
+ var->red.offset = 16;
+ var->red.length = 8;
+ var->green.offset = 8;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ break;
+ case 32: /* RGBA 8888 */
+ var->red.offset = 16;
+ var->red.length = 8;
+ var->green.offset = 8;
+ var->green.length = 8;
+ var->blue.offset = 0;
+ var->blue.length = 8;
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ break;
+ }
+
+ if (var->yres == var->yres_virtual) {
+ __u32 vram = (info->fix.smem_len - (PAGE_SIZE << 2));
+ var->yres_virtual = ((vram << 3) / var->bits_per_pixel) / var->xres_virtual;
+ if (var->yres_virtual < var->yres)
+ var->yres_virtual = var->yres;
+ }
+
+ var->red.msb_right = 0;
+ var->green.msb_right = 0;
+ var->blue.msb_right = 0;
+ var->transp.msb_right = 0;
+ var->height = -1;
+ var->width = -1;
+ var->vmode = FB_VMODE_NONINTERLACED;
+ var->left_margin = var->right_margin = 16;
+ var->upper_margin = var->lower_margin = 16;
+ var->hsync_len = var->vsync_len = 8;
+ return 0;
+}
+
+static int
+imsttfb_set_par(struct fb_info *info)
+{
+ struct imstt_par *par = info->par;
+
+ if (!compute_imstt_regvals(par, info->var.xres, info->var.yres))
+ return -EINVAL;
+
+ if (info->var.green.length == 6)
+ set_565(par);
+ else
+ set_555(par);
+ set_imstt_regvals(info, info->var.bits_per_pixel);
+ info->var.pixclock = 1000000 / getclkMHz(par);
+ return 0;
+}
+
+static int
+imsttfb_setcolreg (u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info)
+{
+ struct imstt_par *par = info->par;
+ u_int bpp = info->var.bits_per_pixel;
+
+ if (regno > 255)
+ return 1;
+
+ red >>= 8;
+ green >>= 8;
+ blue >>= 8;
+
+ /* PADDRW/PDATA are the same as TVPPADDRW/TVPPDATA */
+ if (0 && bpp == 16) /* screws up X */
+ par->cmap_regs[PADDRW] = regno << 3;
+ else
+ par->cmap_regs[PADDRW] = regno;
+ eieio();
+
+ par->cmap_regs[PDATA] = red; eieio();
+ par->cmap_regs[PDATA] = green; eieio();
+ par->cmap_regs[PDATA] = blue; eieio();
+
+ if (regno < 16)
+ switch (bpp) {
+ case 16:
+ par->palette[regno] =
+ (regno << (info->var.green.length ==
+ 5 ? 10 : 11)) | (regno << 5) | regno;
+ break;
+ case 24:
+ par->palette[regno] =
+ (regno << 16) | (regno << 8) | regno;
+ break;
+ case 32: {
+ int i = (regno << 8) | regno;
+ par->palette[regno] = (i << 16) |i;
+ break;
+ }
+ }
+ return 0;
+}
+
+static int
+imsttfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ if (var->xoffset + info->var.xres > info->var.xres_virtual
+ || var->yoffset + info->var.yres > info->var.yres_virtual)
+ return -EINVAL;
+
+ info->var.xoffset = var->xoffset;
+ info->var.yoffset = var->yoffset;
+ set_offset(var, info);
+ return 0;
+}
+
+static int
+imsttfb_blank(int blank, struct fb_info *info)
+{
+ struct imstt_par *par = info->par;
+ __u32 ctrl;
+
+ ctrl = read_reg_le32(par->dc_regs, STGCTL);
+ if (blank > 0) {
+ switch (blank) {
+ case FB_BLANK_NORMAL:
+ case FB_BLANK_POWERDOWN:
+ ctrl &= ~0x00000380;
+ if (par->ramdac == IBM) {
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = MISCTL2; eieio();
+ par->cmap_regs[PIDXDATA] = 0x55; eieio();
+ par->cmap_regs[PIDXLO] = MISCTL1; eieio();
+ par->cmap_regs[PIDXDATA] = 0x11; eieio();
+ par->cmap_regs[PIDXLO] = SYNCCTL; eieio();
+ par->cmap_regs[PIDXDATA] = 0x0f; eieio();
+ par->cmap_regs[PIDXLO] = PWRMNGMT; eieio();
+ par->cmap_regs[PIDXDATA] = 0x1f; eieio();
+ par->cmap_regs[PIDXLO] = CLKCTL; eieio();
+ par->cmap_regs[PIDXDATA] = 0xc0;
+ }
+ break;
+ case FB_BLANK_VSYNC_SUSPEND:
+ ctrl &= ~0x00000020;
+ break;
+ case FB_BLANK_HSYNC_SUSPEND:
+ ctrl &= ~0x00000010;
+ break;
+ }
+ } else {
+ if (par->ramdac == IBM) {
+ ctrl |= 0x000017b0;
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = CLKCTL; eieio();
+ par->cmap_regs[PIDXDATA] = 0x01; eieio();
+ par->cmap_regs[PIDXLO] = PWRMNGMT; eieio();
+ par->cmap_regs[PIDXDATA] = 0x00; eieio();
+ par->cmap_regs[PIDXLO] = SYNCCTL; eieio();
+ par->cmap_regs[PIDXDATA] = 0x00; eieio();
+ par->cmap_regs[PIDXLO] = MISCTL1; eieio();
+ par->cmap_regs[PIDXDATA] = 0x01; eieio();
+ par->cmap_regs[PIDXLO] = MISCTL2; eieio();
+ par->cmap_regs[PIDXDATA] = 0x45; eieio();
+ } else
+ ctrl |= 0x00001780;
+ }
+ write_reg_le32(par->dc_regs, STGCTL, ctrl);
+ return 0;
+}
+
+static void
+imsttfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
+{
+ struct imstt_par *par = info->par;
+ __u32 Bpp, line_pitch, bgc, dx, dy, width, height;
+
+ bgc = rect->color;
+ bgc |= (bgc << 8);
+ bgc |= (bgc << 16);
+
+ Bpp = info->var.bits_per_pixel >> 3,
+ line_pitch = info->fix.line_length;
+
+ dy = rect->dy * line_pitch;
+ dx = rect->dx * Bpp;
+ height = rect->height;
+ height--;
+ width = rect->width * Bpp;
+ width--;
+
+ if (rect->rop == ROP_COPY) {
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
+ write_reg_le32(par->dc_regs, DSA, dy + dx);
+ write_reg_le32(par->dc_regs, CNT, (height << 16) | width);
+ write_reg_le32(par->dc_regs, DP_OCTL, line_pitch);
+ write_reg_le32(par->dc_regs, BI, 0xffffffff);
+ write_reg_le32(par->dc_regs, MBC, 0xffffffff);
+ write_reg_le32(par->dc_regs, CLR, bgc);
+ write_reg_le32(par->dc_regs, BLTCTL, 0x840); /* 0x200000 */
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x40);
+ } else {
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
+ write_reg_le32(par->dc_regs, DSA, dy + dx);
+ write_reg_le32(par->dc_regs, S1SA, dy + dx);
+ write_reg_le32(par->dc_regs, CNT, (height << 16) | width);
+ write_reg_le32(par->dc_regs, DP_OCTL, line_pitch);
+ write_reg_le32(par->dc_regs, SP, line_pitch);
+ write_reg_le32(par->dc_regs, BLTCTL, 0x40005);
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x40);
+ }
+}
+
+static void
+imsttfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
+{
+ struct imstt_par *par = info->par;
+ __u32 Bpp, line_pitch, fb_offset_old, fb_offset_new, sp, dp_octl;
+ __u32 cnt, bltctl, sx, sy, dx, dy, height, width;
+
+ Bpp = info->var.bits_per_pixel >> 3,
+
+ sx = area->sx * Bpp;
+ sy = area->sy;
+ dx = area->dx * Bpp;
+ dy = area->dy;
+ height = area->height;
+ height--;
+ width = area->width * Bpp;
+ width--;
+
+ line_pitch = info->fix.line_length;
+ bltctl = 0x05;
+ sp = line_pitch << 16;
+ cnt = height << 16;
+
+ if (sy < dy) {
+ sy += height;
+ dy += height;
+ sp |= -(line_pitch) & 0xffff;
+ dp_octl = -(line_pitch) & 0xffff;
+ } else {
+ sp |= line_pitch;
+ dp_octl = line_pitch;
+ }
+ if (sx < dx) {
+ sx += width;
+ dx += width;
+ bltctl |= 0x80;
+ cnt |= -(width) & 0xffff;
+ } else {
+ cnt |= width;
+ }
+ fb_offset_old = sy * line_pitch + sx;
+ fb_offset_new = dy * line_pitch + dx;
+
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
+ write_reg_le32(par->dc_regs, S1SA, fb_offset_old);
+ write_reg_le32(par->dc_regs, SP, sp);
+ write_reg_le32(par->dc_regs, DSA, fb_offset_new);
+ write_reg_le32(par->dc_regs, CNT, cnt);
+ write_reg_le32(par->dc_regs, DP_OCTL, dp_octl);
+ write_reg_le32(par->dc_regs, BLTCTL, bltctl);
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x80);
+ while(read_reg_le32(par->dc_regs, SSTATUS) & 0x40);
+}
+
+#if 0
+static int
+imsttfb_load_cursor_image(struct imstt_par *par, int width, int height, __u8 fgc)
+{
+ u_int x, y;
+
+ if (width > 32 || height > 32)
+ return -EINVAL;
+
+ if (par->ramdac == IBM) {
+ par->cmap_regs[PIDXHI] = 1; eieio();
+ for (x = 0; x < 0x100; x++) {
+ par->cmap_regs[PIDXLO] = x; eieio();
+ par->cmap_regs[PIDXDATA] = 0x00; eieio();
+ }
+ par->cmap_regs[PIDXHI] = 1; eieio();
+ for (y = 0; y < height; y++)
+ for (x = 0; x < width >> 2; x++) {
+ par->cmap_regs[PIDXLO] = x + y * 8; eieio();
+ par->cmap_regs[PIDXDATA] = 0xff; eieio();
+ }
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = CURS1R; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS1G; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS1B; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS2R; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS2G; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS2B; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS3R; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS3G; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ par->cmap_regs[PIDXLO] = CURS3B; eieio();
+ par->cmap_regs[PIDXDATA] = fgc; eieio();
+ } else {
+ par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
+ par->cmap_regs[TVPIDATA] &= 0x03; eieio();
+ par->cmap_regs[TVPADDRW] = 0; eieio();
+ for (x = 0; x < 0x200; x++) {
+ par->cmap_regs[TVPCRDAT] = 0x00; eieio();
+ }
+ for (x = 0; x < 0x200; x++) {
+ par->cmap_regs[TVPCRDAT] = 0xff; eieio();
+ }
+ par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
+ par->cmap_regs[TVPIDATA] &= 0x03; eieio();
+ for (y = 0; y < height; y++)
+ for (x = 0; x < width >> 3; x++) {
+ par->cmap_regs[TVPADDRW] = x + y * 8; eieio();
+ par->cmap_regs[TVPCRDAT] = 0xff; eieio();
+ }
+ par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
+ par->cmap_regs[TVPIDATA] |= 0x08; eieio();
+ for (y = 0; y < height; y++)
+ for (x = 0; x < width >> 3; x++) {
+ par->cmap_regs[TVPADDRW] = x + y * 8; eieio();
+ par->cmap_regs[TVPCRDAT] = 0xff; eieio();
+ }
+ par->cmap_regs[TVPCADRW] = 0x00; eieio();
+ for (x = 0; x < 12; x++) {
+ par->cmap_regs[TVPCDATA] = fgc;
+ eieio();
+ }
+ }
+ return 1;
+}
+
+static void
+imstt_set_cursor(struct imstt_par *par, struct fb_image *d, int on)
+{
+ if (par->ramdac == IBM) {
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ if (!on) {
+ par->cmap_regs[PIDXLO] = CURSCTL; eieio();
+ par->cmap_regs[PIDXDATA] = 0x00; eieio();
+ } else {
+ par->cmap_regs[PIDXLO] = CURSXHI; eieio();
+ par->cmap_regs[PIDXDATA] = d->dx >> 8; eieio();
+ par->cmap_regs[PIDXLO] = CURSXLO; eieio();
+ par->cmap_regs[PIDXDATA] = d->dx & 0xff;eieio();
+ par->cmap_regs[PIDXLO] = CURSYHI; eieio();
+ par->cmap_regs[PIDXDATA] = d->dy >> 8; eieio();
+ par->cmap_regs[PIDXLO] = CURSYLO; eieio();
+ par->cmap_regs[PIDXDATA] = d->dy & 0xff;eieio();
+ par->cmap_regs[PIDXLO] = CURSCTL; eieio();
+ par->cmap_regs[PIDXDATA] = 0x02; eieio();
+ }
+ } else {
+ if (!on) {
+ par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
+ par->cmap_regs[TVPIDATA] = 0x00; eieio();
+ } else {
+ __u16 x = d->dx + 0x40, y = d->dy + 0x40;
+
+ par->cmap_regs[TVPCXPOH] = x >> 8; eieio();
+ par->cmap_regs[TVPCXPOL] = x & 0xff; eieio();
+ par->cmap_regs[TVPCYPOH] = y >> 8; eieio();
+ par->cmap_regs[TVPCYPOL] = y & 0xff; eieio();
+ par->cmap_regs[TVPADDRW] = TVPIRICC; eieio();
+ par->cmap_regs[TVPIDATA] = 0x02; eieio();
+ }
+ }
+}
+
+static int
+imsttfb_cursor(struct fb_info *info, struct fb_cursor *cursor)
+{
+ struct imstt_par *par = info->par;
+ u32 flags = cursor->set, fg, bg, xx, yy;
+
+ if (cursor->dest == NULL && cursor->rop == ROP_XOR)
+ return 1;
+
+ imstt_set_cursor(info, cursor, 0);
+
+ if (flags & FB_CUR_SETPOS) {
+ xx = cursor->image.dx - info->var.xoffset;
+ yy = cursor->image.dy - info->var.yoffset;
+ }
+
+ if (flags & FB_CUR_SETSIZE) {
+ }
+
+ if (flags & (FB_CUR_SETSHAPE | FB_CUR_SETCMAP)) {
+ int fg_idx = cursor->image.fg_color;
+ int width = (cursor->image.width+7)/8;
+ u8 *dat = (u8 *) cursor->image.data;
+ u8 *dst = (u8 *) cursor->dest;
+ u8 *msk = (u8 *) cursor->mask;
+
+ switch (cursor->rop) {
+ case ROP_XOR:
+ for (i = 0; i < cursor->image.height; i++) {
+ for (j = 0; j < width; j++) {
+ d_idx = i * MAX_CURS/8 + j;
+ data[d_idx] = byte_rev[dat[s_idx] ^
+ dst[s_idx]];
+ mask[d_idx] = byte_rev[msk[s_idx]];
+ s_idx++;
+ }
+ }
+ break;
+ case ROP_COPY:
+ default:
+ for (i = 0; i < cursor->image.height; i++) {
+ for (j = 0; j < width; j++) {
+ d_idx = i * MAX_CURS/8 + j;
+ data[d_idx] = byte_rev[dat[s_idx]];
+ mask[d_idx] = byte_rev[msk[s_idx]];
+ s_idx++;
+ }
+ }
+ break;
+ }
+
+ fg = ((info->cmap.red[fg_idx] & 0xf8) << 7) |
+ ((info->cmap.green[fg_idx] & 0xf8) << 2) |
+ ((info->cmap.blue[fg_idx] & 0xf8) >> 3) | 1 << 15;
+
+ imsttfb_load_cursor_image(par, xx, yy, fgc);
+ }
+ if (cursor->enable)
+ imstt_set_cursor(info, cursor, 1);
+ return 0;
+}
+#endif
+
+#define FBIMSTT_SETREG 0x545401
+#define FBIMSTT_GETREG 0x545402
+#define FBIMSTT_SETCMAPREG 0x545403
+#define FBIMSTT_GETCMAPREG 0x545404
+#define FBIMSTT_SETIDXREG 0x545405
+#define FBIMSTT_GETIDXREG 0x545406
+
+static int
+imsttfb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
+{
+ struct imstt_par *par = info->par;
+ void __user *argp = (void __user *)arg;
+ __u32 reg[2];
+ __u8 idx[2];
+
+ switch (cmd) {
+ case FBIMSTT_SETREG:
+ if (copy_from_user(reg, argp, 8) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
+ return -EFAULT;
+ write_reg_le32(par->dc_regs, reg[0], reg[1]);
+ return 0;
+ case FBIMSTT_GETREG:
+ if (copy_from_user(reg, argp, 4) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
+ return -EFAULT;
+ reg[1] = read_reg_le32(par->dc_regs, reg[0]);
+ if (copy_to_user((void __user *)(arg + 4), &reg[1], 4))
+ return -EFAULT;
+ return 0;
+ case FBIMSTT_SETCMAPREG:
+ if (copy_from_user(reg, argp, 8) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
+ return -EFAULT;
+ write_reg_le32(((u_int __iomem *)par->cmap_regs), reg[0], reg[1]);
+ return 0;
+ case FBIMSTT_GETCMAPREG:
+ if (copy_from_user(reg, argp, 4) || reg[0] > (0x1000 - sizeof(reg[0])) / sizeof(reg[0]))
+ return -EFAULT;
+ reg[1] = read_reg_le32(((u_int __iomem *)par->cmap_regs), reg[0]);
+ if (copy_to_user((void __user *)(arg + 4), &reg[1], 4))
+ return -EFAULT;
+ return 0;
+ case FBIMSTT_SETIDXREG:
+ if (copy_from_user(idx, argp, 2))
+ return -EFAULT;
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = idx[0]; eieio();
+ par->cmap_regs[PIDXDATA] = idx[1]; eieio();
+ return 0;
+ case FBIMSTT_GETIDXREG:
+ if (copy_from_user(idx, argp, 1))
+ return -EFAULT;
+ par->cmap_regs[PIDXHI] = 0; eieio();
+ par->cmap_regs[PIDXLO] = idx[0]; eieio();
+ idx[1] = par->cmap_regs[PIDXDATA];
+ if (copy_to_user((void __user *)(arg + 1), &idx[1], 1))
+ return -EFAULT;
+ return 0;
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+static const struct pci_device_id imsttfb_pci_tbl[] = {
+ { PCI_VENDOR_ID_IMS, PCI_DEVICE_ID_IMS_TT128,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, IBM },
+ { PCI_VENDOR_ID_IMS, PCI_DEVICE_ID_IMS_TT3D,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, TVP },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, imsttfb_pci_tbl);
+
+static struct pci_driver imsttfb_pci_driver = {
+ .name = "imsttfb",
+ .id_table = imsttfb_pci_tbl,
+ .probe = imsttfb_probe,
+ .remove = imsttfb_remove,
+};
+
+static const struct fb_ops imsttfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = imsttfb_check_var,
+ .fb_set_par = imsttfb_set_par,
+ .fb_setcolreg = imsttfb_setcolreg,
+ .fb_pan_display = imsttfb_pan_display,
+ .fb_blank = imsttfb_blank,
+ .fb_fillrect = imsttfb_fillrect,
+ .fb_copyarea = imsttfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_ioctl = imsttfb_ioctl,
+};
+
+static int init_imstt(struct fb_info *info)
+{
+ struct imstt_par *par = info->par;
+ __u32 i, tmp, *ip, *end;
+
+ tmp = read_reg_le32(par->dc_regs, PRC);
+ if (par->ramdac == IBM)
+ info->fix.smem_len = (tmp & 0x0004) ? 0x400000 : 0x200000;
+ else
+ info->fix.smem_len = 0x800000;
+
+ ip = (__u32 *)info->screen_base;
+ end = (__u32 *)(info->screen_base + info->fix.smem_len);
+ while (ip < end)
+ *ip++ = 0;
+
+ /* initialize the card */
+ tmp = read_reg_le32(par->dc_regs, STGCTL);
+ write_reg_le32(par->dc_regs, STGCTL, tmp & ~0x1);
+ write_reg_le32(par->dc_regs, SSR, 0);
+
+ /* set default values for DAC registers */
+ if (par->ramdac == IBM) {
+ par->cmap_regs[PPMASK] = 0xff;
+ eieio();
+ par->cmap_regs[PIDXHI] = 0;
+ eieio();
+ for (i = 0; i < ARRAY_SIZE(ibm_initregs); i++) {
+ par->cmap_regs[PIDXLO] = ibm_initregs[i].addr;
+ eieio();
+ par->cmap_regs[PIDXDATA] = ibm_initregs[i].value;
+ eieio();
+ }
+ } else {
+ for (i = 0; i < ARRAY_SIZE(tvp_initregs); i++) {
+ par->cmap_regs[TVPADDRW] = tvp_initregs[i].addr;
+ eieio();
+ par->cmap_regs[TVPIDATA] = tvp_initregs[i].value;
+ eieio();
+ }
+ }
+
+#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
+ if (IS_REACHABLE(CONFIG_NVRAM) && machine_is(powermac)) {
+ int vmode = init_vmode, cmode = init_cmode;
+
+ if (vmode == -1) {
+ vmode = nvram_read_byte(NV_VMODE);
+ if (vmode <= 0 || vmode > VMODE_MAX)
+ vmode = VMODE_640_480_67;
+ }
+ if (cmode == -1) {
+ cmode = nvram_read_byte(NV_CMODE);
+ if (cmode < CMODE_8 || cmode > CMODE_32)
+ cmode = CMODE_8;
+ }
+ if (mac_vmode_to_var(vmode, cmode, &info->var)) {
+ info->var.xres = info->var.xres_virtual = INIT_XRES;
+ info->var.yres = info->var.yres_virtual = INIT_YRES;
+ info->var.bits_per_pixel = INIT_BPP;
+ }
+ } else
+#endif
+ {
+ info->var.xres = info->var.xres_virtual = INIT_XRES;
+ info->var.yres = info->var.yres_virtual = INIT_YRES;
+ info->var.bits_per_pixel = INIT_BPP;
+ }
+
+ if ((info->var.xres * info->var.yres) * (info->var.bits_per_pixel >> 3) > info->fix.smem_len
+ || !(compute_imstt_regvals(par, info->var.xres, info->var.yres))) {
+ printk("imsttfb: %ux%ux%u not supported\n", info->var.xres, info->var.yres, info->var.bits_per_pixel);
+ framebuffer_release(info);
+ return -ENODEV;
+ }
+
+ sprintf(info->fix.id, "IMS TT (%s)", par->ramdac == IBM ? "IBM" : "TVP");
+ info->fix.mmio_len = 0x1000;
+ info->fix.accel = FB_ACCEL_IMS_TWINTURBO;
+ info->fix.type = FB_TYPE_PACKED_PIXELS;
+ info->fix.visual = info->var.bits_per_pixel == 8 ? FB_VISUAL_PSEUDOCOLOR
+ : FB_VISUAL_DIRECTCOLOR;
+ info->fix.line_length = info->var.xres * (info->var.bits_per_pixel >> 3);
+ info->fix.xpanstep = 8;
+ info->fix.ypanstep = 1;
+ info->fix.ywrapstep = 0;
+
+ info->var.accel_flags = FB_ACCELF_TEXT;
+
+// if (par->ramdac == IBM)
+// imstt_cursor_init(info);
+ if (info->var.green.length == 6)
+ set_565(par);
+ else
+ set_555(par);
+ set_imstt_regvals(info, info->var.bits_per_pixel);
+
+ info->var.pixclock = 1000000 / getclkMHz(par);
+
+ info->fbops = &imsttfb_ops;
+ info->flags = FBINFO_DEFAULT |
+ FBINFO_HWACCEL_COPYAREA |
+ FBINFO_HWACCEL_FILLRECT |
+ FBINFO_HWACCEL_YPAN;
+
+ fb_alloc_cmap(&info->cmap, 0, 0);
+
+ if (register_framebuffer(info) < 0) {
+ framebuffer_release(info);
+ return -ENODEV;
+ }
+
+ tmp = (read_reg_le32(par->dc_regs, SSTATUS) & 0x0f00) >> 8;
+ fb_info(info, "%s frame buffer; %uMB vram; chip version %u\n",
+ info->fix.id, info->fix.smem_len >> 20, tmp);
+ return 0;
+}
+
+static int imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ unsigned long addr, size;
+ struct imstt_par *par;
+ struct fb_info *info;
+ struct device_node *dp;
+ int ret = -ENOMEM;
+
+ dp = pci_device_to_OF_node(pdev);
+ if(dp)
+ printk(KERN_INFO "%s: OF name %pOFn\n",__func__, dp);
+ else if (IS_ENABLED(CONFIG_OF))
+ printk(KERN_ERR "imsttfb: no OF node for pci device\n");
+
+ info = framebuffer_alloc(sizeof(struct imstt_par), &pdev->dev);
+ if (!info)
+ return -ENOMEM;
+
+ par = info->par;
+
+ addr = pci_resource_start (pdev, 0);
+ size = pci_resource_len (pdev, 0);
+
+ if (!request_mem_region(addr, size, "imsttfb")) {
+ printk(KERN_ERR "imsttfb: Can't reserve memory region\n");
+ ret = -ENODEV;
+ goto release_info;
+ }
+
+ switch (pdev->device) {
+ case PCI_DEVICE_ID_IMS_TT128: /* IMS,tt128mbA */
+ par->ramdac = IBM;
+ if (of_node_name_eq(dp, "IMS,tt128mb8") ||
+ of_node_name_eq(dp, "IMS,tt128mb8A"))
+ par->ramdac = TVP;
+ break;
+ case PCI_DEVICE_ID_IMS_TT3D: /* IMS,tt3d */
+ par->ramdac = TVP;
+ break;
+ default:
+ printk(KERN_INFO "imsttfb: Device 0x%x unknown, "
+ "contact maintainer.\n", pdev->device);
+ ret = -ENODEV;
+ goto release_mem_region;
+ }
+
+ info->fix.smem_start = addr;
+ info->screen_base = (__u8 *)ioremap(addr, par->ramdac == IBM ?
+ 0x400000 : 0x800000);
+ if (!info->screen_base)
+ goto release_mem_region;
+ info->fix.mmio_start = addr + 0x800000;
+ par->dc_regs = ioremap(addr + 0x800000, 0x1000);
+ if (!par->dc_regs)
+ goto unmap_screen_base;
+ par->cmap_regs_phys = addr + 0x840000;
+ par->cmap_regs = (__u8 *)ioremap(addr + 0x840000, 0x1000);
+ if (!par->cmap_regs)
+ goto unmap_dc_regs;
+ info->pseudo_palette = par->palette;
+ ret = init_imstt(info);
+ if (ret)
+ goto unmap_cmap_regs;
+
+ pci_set_drvdata(pdev, info);
+ return 0;
+
+unmap_cmap_regs:
+ iounmap(par->cmap_regs);
+unmap_dc_regs:
+ iounmap(par->dc_regs);
+unmap_screen_base:
+ iounmap(info->screen_base);
+release_mem_region:
+ release_mem_region(addr, size);
+release_info:
+ framebuffer_release(info);
+ return ret;
+}
+
+static void imsttfb_remove(struct pci_dev *pdev)
+{
+ struct fb_info *info = pci_get_drvdata(pdev);
+ struct imstt_par *par = info->par;
+ int size = pci_resource_len(pdev, 0);
+
+ unregister_framebuffer(info);
+ iounmap(par->cmap_regs);
+ iounmap(par->dc_regs);
+ iounmap(info->screen_base);
+ release_mem_region(info->fix.smem_start, size);
+ framebuffer_release(info);
+}
+
+#ifndef MODULE
+static int __init
+imsttfb_setup(char *options)
+{
+ char *this_opt;
+
+ if (!options || !*options)
+ return 0;
+
+ while ((this_opt = strsep(&options, ",")) != NULL) {
+ if (!strncmp(this_opt, "font:", 5)) {
+ char *p;
+ int i;
+
+ p = this_opt + 5;
+ for (i = 0; i < sizeof(fontname) - 1; i++)
+ if (!*p || *p == ' ' || *p == ',')
+ break;
+ memcpy(fontname, this_opt + 5, i);
+ fontname[i] = 0;
+ } else if (!strncmp(this_opt, "inverse", 7)) {
+ inverse = 1;
+ fb_invert_cmaps();
+ }
+#if defined(CONFIG_PPC_PMAC)
+ else if (!strncmp(this_opt, "vmode:", 6)) {
+ int vmode = simple_strtoul(this_opt+6, NULL, 0);
+ if (vmode > 0 && vmode <= VMODE_MAX)
+ init_vmode = vmode;
+ } else if (!strncmp(this_opt, "cmode:", 6)) {
+ int cmode = simple_strtoul(this_opt+6, NULL, 0);
+ switch (cmode) {
+ case CMODE_8:
+ case 8:
+ init_cmode = CMODE_8;
+ break;
+ case CMODE_16:
+ case 15:
+ case 16:
+ init_cmode = CMODE_16;
+ break;
+ case CMODE_32:
+ case 24:
+ case 32:
+ init_cmode = CMODE_32;
+ break;
+ }
+ }
+#endif
+ }
+ return 0;
+}
+
+#endif /* MODULE */
+
+static int __init imsttfb_init(void)
+{
+#ifndef MODULE
+ char *option = NULL;
+
+ if (fb_get_options("imsttfb", &option))
+ return -ENODEV;
+
+ imsttfb_setup(option);
+#endif
+ return pci_register_driver(&imsttfb_pci_driver);
+}
+
+static void __exit imsttfb_exit(void)
+{
+ pci_unregister_driver(&imsttfb_pci_driver);
+}
+
+MODULE_LICENSE("GPL");
+
+module_init(imsttfb_init);
+module_exit(imsttfb_exit);
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 16:42:02 +0000