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alistair23-linux/drivers/video/matrox/matroxfb_maven.c
Julia Lawall 847fb8aca3 drivers/video/matrox/matroxfb_maven.c: fix unsigned return type 
The function has an unsigned return type, but returns a negative constant
to indicate an error condition.  The result of calling the function is
only tested by comparison to 0, and thus unsigned is not needed and can be
dropped from the return type.

A sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@exists@
identifier f;
constant C;
@@

 unsigned f(...)
 { <+...
*  return -C;
 ...+> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27 18:03:08 -07:00

1301 lines
29 KiB
C
Raw Blame History

/*
*
* Hardware accelerated Matrox Millennium I, II, Mystique, G100, G200, G400 and G450.
*
* (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
*
* Portions Copyright (c) 2001 Matrox Graphics Inc.
*
* Version: 1.65 2002/08/14
*
* See matroxfb_base.c for contributors.
*
*/
#include "matroxfb_maven.h"
#include "matroxfb_misc.h"
#include "matroxfb_DAC1064.h"
#include <linux/i2c.h>
#include <linux/matroxfb.h>
#include <linux/slab.h>
#include <asm/div64.h>
#define MGATVO_B 1
#define MGATVO_C 2
static const struct maven_gamma {
unsigned char reg83;
unsigned char reg84;
unsigned char reg85;
unsigned char reg86;
unsigned char reg87;
unsigned char reg88;
unsigned char reg89;
unsigned char reg8a;
unsigned char reg8b;
} maven_gamma[] = {
{ 131, 57, 223, 15, 117, 212, 251, 91, 156},
{ 133, 61, 128, 63, 180, 147, 195, 100, 180},
{ 131, 19, 63, 31, 50, 66, 171, 64, 176},
{ 0, 0, 0, 31, 16, 16, 16, 100, 200},
{ 8, 23, 47, 73, 147, 244, 220, 80, 195},
{ 22, 43, 64, 80, 147, 115, 58, 85, 168},
{ 34, 60, 80, 214, 147, 212, 188, 85, 167},
{ 45, 77, 96, 216, 147, 99, 91, 85, 159},
{ 56, 76, 112, 107, 147, 212, 148, 64, 144},
{ 65, 91, 128, 137, 147, 196, 17, 69, 148},
{ 72, 104, 136, 138, 147, 180, 245, 73, 147},
{ 87, 116, 143, 126, 16, 83, 229, 77, 144},
{ 95, 119, 152, 254, 244, 83, 221, 77, 151},
{ 100, 129, 159, 156, 244, 148, 197, 77, 160},
{ 105, 141, 167, 247, 244, 132, 181, 84, 166},
{ 105, 147, 168, 247, 244, 245, 181, 90, 170},
{ 120, 153, 175, 248, 212, 229, 165, 90, 180},
{ 119, 156, 176, 248, 244, 229, 84, 74, 160},
{ 119, 158, 183, 248, 244, 229, 149, 78, 165}
};
/* Definition of the various controls */
struct mctl {
struct v4l2_queryctrl desc;
size_t control;
};
#define BLMIN 0x0FF
#define WLMAX 0x3FF
static const struct mctl maven_controls[] =
{ { { V4L2_CID_BRIGHTNESS, V4L2_CTRL_TYPE_INTEGER,
"brightness",
0, WLMAX - BLMIN, 1, 379 - BLMIN,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.brightness) },
{ { V4L2_CID_CONTRAST, V4L2_CTRL_TYPE_INTEGER,
"contrast",
0, 1023, 1, 127,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.contrast) },
{ { V4L2_CID_SATURATION, V4L2_CTRL_TYPE_INTEGER,
"saturation",
0, 255, 1, 155,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.saturation) },
{ { V4L2_CID_HUE, V4L2_CTRL_TYPE_INTEGER,
"hue",
0, 255, 1, 0,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.hue) },
{ { V4L2_CID_GAMMA, V4L2_CTRL_TYPE_INTEGER,
"gamma",
0, ARRAY_SIZE(maven_gamma) - 1, 1, 3,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.gamma) },
{ { MATROXFB_CID_TESTOUT, V4L2_CTRL_TYPE_BOOLEAN,
"test output",
0, 1, 1, 0,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.testout) },
{ { MATROXFB_CID_DEFLICKER, V4L2_CTRL_TYPE_INTEGER,
"deflicker mode",
0, 2, 1, 0,
0,
}, offsetof(struct matrox_fb_info, altout.tvo_params.deflicker) },
};
#define MAVCTRLS ARRAY_SIZE(maven_controls)
/* Return: positive number: id found
-EINVAL: id not found, return failure
-ENOENT: id not found, create fake disabled control */
static int get_ctrl_id(__u32 v4l2_id) {
int i;
for (i = 0; i < MAVCTRLS; i++) {
if (v4l2_id < maven_controls[i].desc.id) {
if (maven_controls[i].desc.id == 0x08000000) {
return -EINVAL;
}
return -ENOENT;
}
if (v4l2_id == maven_controls[i].desc.id) {
return i;
}
}
return -EINVAL;
}
struct maven_data {
struct matrox_fb_info* primary_head;
struct i2c_client *client;
int version;
};
static int* get_ctrl_ptr(struct maven_data* md, int idx) {
return (int*)((char*)(md->primary_head) + maven_controls[idx].control);
}
static int maven_get_reg(struct i2c_client* c, char reg) {
char dst;
struct i2c_msg msgs[] = {{ c->addr, I2C_M_REV_DIR_ADDR, sizeof(reg), &reg },
{ c->addr, I2C_M_RD | I2C_M_NOSTART, sizeof(dst), &dst }};
s32 err;
err = i2c_transfer(c->adapter, msgs, 2);
if (err < 0)
printk(KERN_INFO "ReadReg(%d) failed\n", reg);
return dst & 0xFF;
}
static int maven_set_reg(struct i2c_client* c, int reg, int val) {
s32 err;
err = i2c_smbus_write_byte_data(c, reg, val);
if (err)
printk(KERN_INFO "WriteReg(%d) failed\n", reg);
return err;
}
static int maven_set_reg_pair(struct i2c_client* c, int reg, int val) {
s32 err;
err = i2c_smbus_write_word_data(c, reg, val);
if (err)
printk(KERN_INFO "WriteRegPair(%d) failed\n", reg);
return err;
}
static const struct matrox_pll_features maven_pll = {
50000,
27000,
4, 127,
2, 31,
3
};
struct matrox_pll_features2 {
unsigned int vco_freq_min;
unsigned int vco_freq_max;
unsigned int feed_div_min;
unsigned int feed_div_max;
unsigned int in_div_min;
unsigned int in_div_max;
unsigned int post_shift_max;
};
struct matrox_pll_ctl {
unsigned int ref_freq;
unsigned int den;
};
static const struct matrox_pll_features2 maven1000_pll = {
50000000,
300000000,
5, 128,
3, 32,
3
};
static const struct matrox_pll_ctl maven_PAL = {
540000,
50
};
static const struct matrox_pll_ctl maven_NTSC = {
450450, /* 27027000/60 == 27000000/59.94005994 */
60
};
static int matroxfb_PLL_mavenclock(const struct matrox_pll_features2* pll,
const struct matrox_pll_ctl* ctl,
unsigned int htotal, unsigned int vtotal,
unsigned int* in, unsigned int* feed, unsigned int* post,
unsigned int* h2) {
unsigned int besth2 = 0;
unsigned int fxtal = ctl->ref_freq;
unsigned int fmin = pll->vco_freq_min / ctl->den;
unsigned int fwant;
unsigned int p;
unsigned int scrlen;
unsigned int fmax;
DBG(__func__)
scrlen = htotal * (vtotal - 1);
fwant = htotal * vtotal;
fmax = pll->vco_freq_max / ctl->den;
dprintk(KERN_DEBUG "want: %u, xtal: %u, h: %u, v: %u, fmax: %u\n",
fwant, fxtal, htotal, vtotal, fmax);
for (p = 1; p <= pll->post_shift_max; p++) {
if (fwant * 2 > fmax)
break;
fwant *= 2;
}
if (fwant > fmax)
return 0;
for (; p-- > 0; fwant >>= 1) {
unsigned int m;
if (fwant < fmin) break;
for (m = pll->in_div_min; m <= pll->in_div_max; m++) {
unsigned int n;
unsigned int dvd;
unsigned int ln;
n = (fwant * m) / fxtal;
if (n < pll->feed_div_min)
continue;
if (n > pll->feed_div_max)
break;
ln = fxtal * n;
dvd = m << p;
if (ln % dvd)
continue;
ln = ln / dvd;
if (ln < scrlen + 2)
continue;
ln = ln - scrlen;
if (ln > htotal)
continue;
dprintk(KERN_DEBUG "Match: %u / %u / %u / %u\n", n, m, p, ln);
if (ln > besth2) {
dprintk(KERN_DEBUG "Better...\n");
*h2 = besth2 = ln;
*post = p;
*in = m;
*feed = n;
}
}
}
/* if h2/post/in/feed have not been assigned, return zero (error) */
if (besth2 < 2)
return 0;
dprintk(KERN_ERR "clk: %02X %02X %02X %d %d\n", *in, *feed, *post, fxtal, fwant);
return fxtal * (*feed) / (*in) * ctl->den;
}
static int matroxfb_mavenclock(const struct matrox_pll_ctl *ctl,
unsigned int htotal, unsigned int vtotal,
unsigned int* in, unsigned int* feed, unsigned int* post,
unsigned int* htotal2) {
unsigned int fvco;
unsigned int uninitialized_var(p);
fvco = matroxfb_PLL_mavenclock(&maven1000_pll, ctl, htotal, vtotal, in, feed, &p, htotal2);
if (!fvco)
return -EINVAL;
p = (1 << p) - 1;
if (fvco <= 100000000)
;
else if (fvco <= 140000000)
p |= 0x08;
else if (fvco <= 180000000)
p |= 0x10;
else
p |= 0x18;
*post = p;
return 0;
}
static void DAC1064_calcclock(unsigned int freq, unsigned int fmax,
unsigned int* in, unsigned int* feed, unsigned int* post) {
unsigned int fvco;
unsigned int p;
fvco = matroxfb_PLL_calcclock(&maven_pll, freq, fmax, in, feed, &p);
p = (1 << p) - 1;
if (fvco <= 100000)
;
else if (fvco <= 140000)
p |= 0x08;
else if (fvco <= 180000)
p |= 0x10;
else
p |= 0x18;
*post = p;
return;
}
static unsigned char maven_compute_deflicker (const struct maven_data* md) {
unsigned char df;
df = (md->version == MGATVO_B?0x40:0x00);
switch (md->primary_head->altout.tvo_params.deflicker) {
case 0:
/* df |= 0x00; */
break;
case 1:
df |= 0xB1;
break;
case 2:
df |= 0xA2;
break;
}
return df;
}
static void maven_compute_bwlevel (const struct maven_data* md,
int *bl, int *wl) {
const int b = md->primary_head->altout.tvo_params.brightness + BLMIN;
const int c = md->primary_head->altout.tvo_params.contrast;
*bl = max(b - c, BLMIN);
*wl = min(b + c, WLMAX);
}
static const struct maven_gamma* maven_compute_gamma (const struct maven_data* md) {
return maven_gamma + md->primary_head->altout.tvo_params.gamma;
}
static void maven_init_TVdata(const struct maven_data* md, struct mavenregs* data) {
static struct mavenregs palregs = { {
0x2A, 0x09, 0x8A, 0xCB, /* 00: chroma subcarrier */
0x00,
0x00, /* ? not written */
0x00, /* modified by code (F9 written...) */
0x00, /* ? not written */
0x7E, /* 08 */
0x44, /* 09 */
0x9C, /* 0A */
0x2E, /* 0B */
0x21, /* 0C */
0x00, /* ? not written */
0x3F, 0x03, /* 0E-0F */
0x3F, 0x03, /* 10-11 */
0x1A, /* 12 */
0x2A, /* 13 */
0x1C, 0x3D, 0x14, /* 14-16 */
0x9C, 0x01, /* 17-18 */
0x00, /* 19 */
0xFE, /* 1A */
0x7E, /* 1B */
0x60, /* 1C */
0x05, /* 1D */
0x89, 0x03, /* 1E-1F */
0x72, /* 20 */
0x07, /* 21 */
0x72, /* 22 */
0x00, /* 23 */
0x00, /* 24 */
0x00, /* 25 */
0x08, /* 26 */
0x04, /* 27 */
0x00, /* 28 */
0x1A, /* 29 */
0x55, 0x01, /* 2A-2B */
0x26, /* 2C */
0x07, 0x7E, /* 2D-2E */
0x02, 0x54, /* 2F-30 */
0xB0, 0x00, /* 31-32 */
0x14, /* 33 */
0x49, /* 34 */
0x00, /* 35 written multiple times */
0x00, /* 36 not written */
0xA3, /* 37 */
0xC8, /* 38 */
0x22, /* 39 */
0x02, /* 3A */
0x22, /* 3B */
0x3F, 0x03, /* 3C-3D */
0x00, /* 3E written multiple times */
0x00, /* 3F not written */
}, MATROXFB_OUTPUT_MODE_PAL, 625, 50 };
static struct mavenregs ntscregs = { {
0x21, 0xF0, 0x7C, 0x1F, /* 00: chroma subcarrier */
0x00,
0x00, /* ? not written */
0x00, /* modified by code (F9 written...) */
0x00, /* ? not written */
0x7E, /* 08 */
0x43, /* 09 */
0x7E, /* 0A */
0x3D, /* 0B */
0x00, /* 0C */
0x00, /* ? not written */
0x41, 0x00, /* 0E-0F */
0x3C, 0x00, /* 10-11 */
0x17, /* 12 */
0x21, /* 13 */
0x1B, 0x1B, 0x24, /* 14-16 */
0x83, 0x01, /* 17-18 */
0x00, /* 19 */
0x0F, /* 1A */
0x0F, /* 1B */
0x60, /* 1C */
0x05, /* 1D */
0x89, 0x02, /* 1E-1F */
0x5F, /* 20 */
0x04, /* 21 */
0x5F, /* 22 */
0x01, /* 23 */
0x02, /* 24 */
0x00, /* 25 */
0x0A, /* 26 */
0x05, /* 27 */
0x00, /* 28 */
0x10, /* 29 */
0xFF, 0x03, /* 2A-2B */
0x24, /* 2C */
0x0F, 0x78, /* 2D-2E */
0x00, 0x00, /* 2F-30 */
0xB2, 0x04, /* 31-32 */
0x14, /* 33 */
0x02, /* 34 */
0x00, /* 35 written multiple times */
0x00, /* 36 not written */
0xA3, /* 37 */
0xC8, /* 38 */
0x15, /* 39 */
0x05, /* 3A */
0x3B, /* 3B */
0x3C, 0x00, /* 3C-3D */
0x00, /* 3E written multiple times */
0x00, /* never written */
}, MATROXFB_OUTPUT_MODE_NTSC, 525, 60 };
struct matrox_fb_info *minfo = md->primary_head;
if (minfo->outputs[1].mode == MATROXFB_OUTPUT_MODE_PAL)
*data = palregs;
else
*data = ntscregs;
/* Set deflicker */
data->regs[0x93] = maven_compute_deflicker(md);
/* set gamma */
{
const struct maven_gamma* g;
g = maven_compute_gamma(md);
data->regs[0x83] = g->reg83;
data->regs[0x84] = g->reg84;
data->regs[0x85] = g->reg85;
data->regs[0x86] = g->reg86;
data->regs[0x87] = g->reg87;
data->regs[0x88] = g->reg88;
data->regs[0x89] = g->reg89;
data->regs[0x8A] = g->reg8a;
data->regs[0x8B] = g->reg8b;
}
/* Set contrast / brightness */
{
int bl, wl;
maven_compute_bwlevel (md, &bl, &wl);
data->regs[0x0e] = bl >> 2;
data->regs[0x0f] = bl & 3;
data->regs[0x1e] = wl >> 2;
data->regs[0x1f] = wl & 3;
}
/* Set saturation */
{
data->regs[0x20] =
data->regs[0x22] = minfo->altout.tvo_params.saturation;
}
/* Set HUE */
data->regs[0x25] = minfo->altout.tvo_params.hue;
return;
}
#define LR(x) maven_set_reg(c, (x), m->regs[(x)])
#define LRP(x) maven_set_reg_pair(c, (x), m->regs[(x)] | (m->regs[(x)+1] << 8))
static void maven_init_TV(struct i2c_client* c, const struct mavenregs* m) {
int val;
maven_set_reg(c, 0x3E, 0x01);
maven_get_reg(c, 0x82); /* fetch oscillator state? */
maven_set_reg(c, 0x8C, 0x00);
maven_get_reg(c, 0x94); /* get 0x82 */
maven_set_reg(c, 0x94, 0xA2);
/* xmiscctrl */
maven_set_reg_pair(c, 0x8E, 0x1EFF);
maven_set_reg(c, 0xC6, 0x01);
/* removed code... */
maven_get_reg(c, 0x06);
maven_set_reg(c, 0x06, 0xF9); /* or read |= 0xF0 ? */
/* removed code here... */
/* real code begins here? */
/* chroma subcarrier */
LR(0x00); LR(0x01); LR(0x02); LR(0x03);
LR(0x04);
LR(0x2C);
LR(0x08);
LR(0x0A);
LR(0x09);
LR(0x29);
LRP(0x31);
LRP(0x17);
LR(0x0B);
LR(0x0C);
if (m->mode == MATROXFB_OUTPUT_MODE_PAL) {
maven_set_reg(c, 0x35, 0x10); /* ... */
} else {
maven_set_reg(c, 0x35, 0x0F); /* ... */
}
LRP(0x10);
LRP(0x0E);
LRP(0x1E);
LR(0x20); /* saturation #1 */
LR(0x22); /* saturation #2 */
LR(0x25); /* hue */
LR(0x34);
LR(0x33);
LR(0x19);
LR(0x12);
LR(0x3B);
LR(0x13);
LR(0x39);
LR(0x1D);
LR(0x3A);
LR(0x24);
LR(0x14);
LR(0x15);
LR(0x16);
LRP(0x2D);
LRP(0x2F);
LR(0x1A);
LR(0x1B);
LR(0x1C);
LR(0x23);
LR(0x26);
LR(0x28);
LR(0x27);
LR(0x21);
LRP(0x2A);
if (m->mode == MATROXFB_OUTPUT_MODE_PAL)
maven_set_reg(c, 0x35, 0x1D); /* ... */
else
maven_set_reg(c, 0x35, 0x1C);
LRP(0x3C);
LR(0x37);
LR(0x38);
maven_set_reg(c, 0xB3, 0x01);
maven_get_reg(c, 0xB0); /* read 0x80 */
maven_set_reg(c, 0xB0, 0x08); /* ugh... */
maven_get_reg(c, 0xB9); /* read 0x7C */
maven_set_reg(c, 0xB9, 0x78);
maven_get_reg(c, 0xBF); /* read 0x00 */
maven_set_reg(c, 0xBF, 0x02);
maven_get_reg(c, 0x94); /* read 0x82 */
maven_set_reg(c, 0x94, 0xB3);
LR(0x80); /* 04 1A 91 or 05 21 91 */
LR(0x81);
LR(0x82);
maven_set_reg(c, 0x8C, 0x20);
maven_get_reg(c, 0x8D);
maven_set_reg(c, 0x8D, 0x10);
LR(0x90); /* 4D 50 52 or 4E 05 45 */
LR(0x91);
LR(0x92);
LRP(0x9A); /* 0049 or 004F */
LRP(0x9C); /* 0004 or 0004 */
LRP(0x9E); /* 0458 or 045E */
LRP(0xA0); /* 05DA or 051B */
LRP(0xA2); /* 00CC or 00CF */
LRP(0xA4); /* 007D or 007F */
LRP(0xA6); /* 007C or 007E */
LRP(0xA8); /* 03CB or 03CE */
LRP(0x98); /* 0000 or 0000 */
LRP(0xAE); /* 0044 or 003A */
LRP(0x96); /* 05DA or 051B */
LRP(0xAA); /* 04BC or 046A */
LRP(0xAC); /* 004D or 004E */
LR(0xBE);
LR(0xC2);
maven_get_reg(c, 0x8D);
maven_set_reg(c, 0x8D, 0x04);
LR(0x20); /* saturation #1 */
LR(0x22); /* saturation #2 */
LR(0x93); /* whoops */
LR(0x20); /* oh, saturation #1 again */
LR(0x22); /* oh, saturation #2 again */
LR(0x25); /* hue */
LRP(0x0E);
LRP(0x1E);
LRP(0x0E); /* problems with memory? */
LRP(0x1E); /* yes, matrox must have problems in memory area... */
/* load gamma correction stuff */
LR(0x83);
LR(0x84);
LR(0x85);
LR(0x86);
LR(0x87);
LR(0x88);
LR(0x89);
LR(0x8A);
LR(0x8B);
val = maven_get_reg(c, 0x8D);
val &= 0x14; /* 0x10 or anything ored with it */
maven_set_reg(c, 0x8D, val);
LR(0x33);
LR(0x19);
LR(0x12);
LR(0x3B);
LR(0x13);
LR(0x39);
LR(0x1D);
LR(0x3A);
LR(0x24);
LR(0x14);
LR(0x15);
LR(0x16);
LRP(0x2D);
LRP(0x2F);
LR(0x1A);
LR(0x1B);
LR(0x1C);
LR(0x23);
LR(0x26);
LR(0x28);
LR(0x27);
LR(0x21);
LRP(0x2A);
if (m->mode == MATROXFB_OUTPUT_MODE_PAL)
maven_set_reg(c, 0x35, 0x1D);
else
maven_set_reg(c, 0x35, 0x1C);
LRP(0x3C);
LR(0x37);
LR(0x38);
maven_get_reg(c, 0xB0);
LR(0xB0); /* output mode */
LR(0x90);
LR(0xBE);
LR(0xC2);
LRP(0x9A);
LRP(0xA2);
LRP(0x9E);
LRP(0xA6);
LRP(0xAA);
LRP(0xAC);
maven_set_reg(c, 0x3E, 0x00);
maven_set_reg(c, 0x95, 0x20);
}
static int maven_find_exact_clocks(unsigned int ht, unsigned int vt,
struct mavenregs* m) {
unsigned int x;
unsigned int err = ~0;
/* 1:1 */
m->regs[0x80] = 0x0F;
m->regs[0x81] = 0x07;
m->regs[0x82] = 0x81;
for (x = 0; x < 8; x++) {
unsigned int c;
unsigned int uninitialized_var(a), uninitialized_var(b),
uninitialized_var(h2);
unsigned int h = ht + 2 + x;
if (!matroxfb_mavenclock((m->mode == MATROXFB_OUTPUT_MODE_PAL) ? &maven_PAL : &maven_NTSC, h, vt, &a, &b, &c, &h2)) {
unsigned int diff = h - h2;
if (diff < err) {
err = diff;
m->regs[0x80] = a - 1;
m->regs[0x81] = b - 1;
m->regs[0x82] = c | 0x80;
m->hcorr = h2 - 2;
m->htotal = h - 2;
}
}
}
return err != ~0U;
}
static inline int maven_compute_timming(struct maven_data* md,
struct my_timming* mt,
struct mavenregs* m) {
unsigned int tmpi;
unsigned int a, bv, c;
struct matrox_fb_info *minfo = md->primary_head;
m->mode = minfo->outputs[1].mode;
if (m->mode != MATROXFB_OUTPUT_MODE_MONITOR) {
unsigned int lmargin;
unsigned int umargin;
unsigned int vslen;
unsigned int hcrt;
unsigned int slen;
maven_init_TVdata(md, m);
if (maven_find_exact_clocks(mt->HTotal, mt->VTotal, m) == 0)
return -EINVAL;
lmargin = mt->HTotal - mt->HSyncEnd;
slen = mt->HSyncEnd - mt->HSyncStart;
hcrt = mt->HTotal - slen - mt->delay;
umargin = mt->VTotal - mt->VSyncEnd;
vslen = mt->VSyncEnd - mt->VSyncStart;
if (m->hcorr < mt->HTotal)
hcrt += m->hcorr;
if (hcrt > mt->HTotal)
hcrt -= mt->HTotal;
if (hcrt + 2 > mt->HTotal)
hcrt = 0; /* or issue warning? */
/* last (first? middle?) line in picture can have different length */
/* hlen - 2 */
m->regs[0x96] = m->hcorr;
m->regs[0x97] = m->hcorr >> 8;
/* ... */
m->regs[0x98] = 0x00; m->regs[0x99] = 0x00;
/* hblanking end */
m->regs[0x9A] = lmargin; /* 100% */
m->regs[0x9B] = lmargin >> 8; /* 100% */
/* who knows */
m->regs[0x9C] = 0x04;
m->regs[0x9D] = 0x00;
/* htotal - 2 */
m->regs[0xA0] = m->htotal;
m->regs[0xA1] = m->htotal >> 8;
/* vblanking end */
m->regs[0xA2] = mt->VTotal - mt->VSyncStart - 1; /* stop vblanking */
m->regs[0xA3] = (mt->VTotal - mt->VSyncStart - 1) >> 8;
/* something end... [A6]+1..[A8] */
if (md->version == MGATVO_B) {
m->regs[0xA4] = 0x04;
m->regs[0xA5] = 0x00;
} else {
m->regs[0xA4] = 0x01;
m->regs[0xA5] = 0x00;
}
/* something start... 0..[A4]-1 */
m->regs[0xA6] = 0x00;
m->regs[0xA7] = 0x00;
/* vertical line count - 1 */
m->regs[0xA8] = mt->VTotal - 1;
m->regs[0xA9] = (mt->VTotal - 1) >> 8;
/* horizontal vidrst pos */
m->regs[0xAA] = hcrt; /* 0 <= hcrt <= htotal - 2 */
m->regs[0xAB] = hcrt >> 8;
/* vertical vidrst pos */
m->regs[0xAC] = mt->VTotal - 2;
m->regs[0xAD] = (mt->VTotal - 2) >> 8;
/* moves picture up/down and so on... */
m->regs[0xAE] = 0x01; /* Fix this... 0..VTotal */
m->regs[0xAF] = 0x00;
{
int hdec;
int hlen;
unsigned int ibmin = 4 + lmargin + mt->HDisplay;
unsigned int ib;
int i;
/* Verify! */
/* Where 94208 came from? */
if (mt->HTotal)
hdec = 94208 / (mt->HTotal);
else
hdec = 0x81;
if (hdec > 0x81)
hdec = 0x81;
if (hdec < 0x41)
hdec = 0x41;
hdec--;
hlen = 98304 - 128 - ((lmargin + mt->HDisplay - 8) * hdec);
if (hlen < 0)
hlen = 0;
hlen = hlen >> 8;
if (hlen > 0xFF)
hlen = 0xFF;
/* Now we have to compute input buffer length.
If you want any picture, it must be between
4 + lmargin + xres
and
94208 / hdec
If you want perfect picture even on the top
of screen, it must be also
0x3C0000 * i / hdec + Q - R / hdec
where
R Qmin Qmax
0x07000 0x5AE 0x5BF
0x08000 0x5CF 0x5FF
0x0C000 0x653 0x67F
0x10000 0x6F8 0x6FF
*/
i = 1;
do {
ib = ((0x3C0000 * i - 0x8000)/ hdec + 0x05E7) >> 8;
i++;
} while (ib < ibmin);
if (ib >= m->htotal + 2) {
ib = ibmin;
}
m->regs[0x90] = hdec; /* < 0x40 || > 0x80 is bad... 0x80 is questionable */
m->regs[0xC2] = hlen;
/* 'valid' input line length */
m->regs[0x9E] = ib;
m->regs[0x9F] = ib >> 8;
}
{
int vdec;
int vlen;
#define MATROX_USE64BIT_DIVIDE
if (mt->VTotal) {
#ifdef MATROX_USE64BIT_DIVIDE
u64 f1;
u32 a;
u32 b;
a = m->vlines * (m->htotal + 2);
b = (mt->VTotal - 1) * (m->htotal + 2) + m->hcorr + 2;
f1 = ((u64)a) << 15; /* *32768 */
do_div(f1, b);
vdec = f1;
#else
vdec = m->vlines * 32768 / mt->VTotal;
#endif
} else
vdec = 0x8000;
if (vdec > 0x8000)
vdec = 0x8000;
vlen = (vslen + umargin + mt->VDisplay) * vdec;
vlen = (vlen >> 16) - 146; /* FIXME: 146?! */
if (vlen < 0)
vlen = 0;
if (vlen > 0xFF)
vlen = 0xFF;
vdec--;
m->regs[0x91] = vdec;
m->regs[0x92] = vdec >> 8;
m->regs[0xBE] = vlen;
}
m->regs[0xB0] = 0x08; /* output: SVideo/Composite */
return 0;
}
DAC1064_calcclock(mt->pixclock, 450000, &a, &bv, &c);
m->regs[0x80] = a;
m->regs[0x81] = bv;
m->regs[0x82] = c | 0x80;
m->regs[0xB3] = 0x01;
m->regs[0x94] = 0xB2;
/* htotal... */
m->regs[0x96] = mt->HTotal;
m->regs[0x97] = mt->HTotal >> 8;
/* ?? */
m->regs[0x98] = 0x00;
m->regs[0x99] = 0x00;
/* hsync len */
tmpi = mt->HSyncEnd - mt->HSyncStart;
m->regs[0x9A] = tmpi;
m->regs[0x9B] = tmpi >> 8;
/* hblank end */
tmpi = mt->HTotal - mt->HSyncStart;
m->regs[0x9C] = tmpi;
m->regs[0x9D] = tmpi >> 8;
/* hblank start */
tmpi += mt->HDisplay;
m->regs[0x9E] = tmpi;
m->regs[0x9F] = tmpi >> 8;
/* htotal + 1 */
tmpi = mt->HTotal + 1;
m->regs[0xA0] = tmpi;
m->regs[0xA1] = tmpi >> 8;
/* vsync?! */
tmpi = mt->VSyncEnd - mt->VSyncStart - 1;
m->regs[0xA2] = tmpi;
m->regs[0xA3] = tmpi >> 8;
/* ignored? */
tmpi = mt->VTotal - mt->VSyncStart;
m->regs[0xA4] = tmpi;
m->regs[0xA5] = tmpi >> 8;
/* ignored? */
tmpi = mt->VTotal - 1;
m->regs[0xA6] = tmpi;
m->regs[0xA7] = tmpi >> 8;
/* vtotal - 1 */
m->regs[0xA8] = tmpi;
m->regs[0xA9] = tmpi >> 8;
/* hor vidrst */
tmpi = mt->HTotal - mt->delay;
m->regs[0xAA] = tmpi;
m->regs[0xAB] = tmpi >> 8;
/* vert vidrst */
tmpi = mt->VTotal - 2;
m->regs[0xAC] = tmpi;
m->regs[0xAD] = tmpi >> 8;
/* ignored? */
m->regs[0xAE] = 0x00;
m->regs[0xAF] = 0x00;
m->regs[0xB0] = 0x03; /* output: monitor */
m->regs[0xB1] = 0xA0; /* ??? */
m->regs[0x8C] = 0x20; /* must be set... */
m->regs[0x8D] = 0x04; /* defaults to 0x10: test signal */
m->regs[0xB9] = 0x1A; /* defaults to 0x2C: too bright */
m->regs[0xBF] = 0x22; /* makes picture stable */
return 0;
}
static int maven_program_timming(struct maven_data* md,
const struct mavenregs* m) {
struct i2c_client *c = md->client;
if (m->mode == MATROXFB_OUTPUT_MODE_MONITOR) {
LR(0x80);
LR(0x81);
LR(0x82);
LR(0xB3);
LR(0x94);
LRP(0x96);
LRP(0x98);
LRP(0x9A);
LRP(0x9C);
LRP(0x9E);
LRP(0xA0);
LRP(0xA2);
LRP(0xA4);
LRP(0xA6);
LRP(0xA8);
LRP(0xAA);
LRP(0xAC);
LRP(0xAE);
LR(0xB0); /* output: monitor */
LR(0xB1); /* ??? */
LR(0x8C); /* must be set... */
LR(0x8D); /* defaults to 0x10: test signal */
LR(0xB9); /* defaults to 0x2C: too bright */
LR(0xBF); /* makes picture stable */
} else {
maven_init_TV(c, m);
}
return 0;
}
static inline int maven_resync(struct maven_data* md) {
struct i2c_client *c = md->client;
maven_set_reg(c, 0x95, 0x20); /* start whole thing */
return 0;
}
static int maven_get_queryctrl (struct maven_data* md,
struct v4l2_queryctrl *p) {
int i;
i = get_ctrl_id(p->id);
if (i >= 0) {
*p = maven_controls[i].desc;
return 0;
}
if (i == -ENOENT) {
static const struct v4l2_queryctrl disctrl =
{ .flags = V4L2_CTRL_FLAG_DISABLED };
i = p->id;
*p = disctrl;
p->id = i;
sprintf(p->name, "Ctrl #%08X", i);
return 0;
}
return -EINVAL;
}
static int maven_set_control (struct maven_data* md,
struct v4l2_control *p) {
int i;
i = get_ctrl_id(p->id);
if (i < 0) return -EINVAL;
/*
* Check if changed.
*/
if (p->value == *get_ctrl_ptr(md, i)) return 0;
/*
* Check limits.
*/
if (p->value > maven_controls[i].desc.maximum) return -EINVAL;
if (p->value < maven_controls[i].desc.minimum) return -EINVAL;
/*
* Store new value.
*/
*get_ctrl_ptr(md, i) = p->value;
switch (p->id) {
case V4L2_CID_BRIGHTNESS:
case V4L2_CID_CONTRAST:
{
int blacklevel, whitelevel;
maven_compute_bwlevel(md, &blacklevel, &whitelevel);
blacklevel = (blacklevel >> 2) | ((blacklevel & 3) << 8);
whitelevel = (whitelevel >> 2) | ((whitelevel & 3) << 8);
maven_set_reg_pair(md->client, 0x0e, blacklevel);
maven_set_reg_pair(md->client, 0x1e, whitelevel);
}
break;
case V4L2_CID_SATURATION:
{
maven_set_reg(md->client, 0x20, p->value);
maven_set_reg(md->client, 0x22, p->value);
}
break;
case V4L2_CID_HUE:
{
maven_set_reg(md->client, 0x25, p->value);
}
break;
case V4L2_CID_GAMMA:
{
const struct maven_gamma* g;
g = maven_compute_gamma(md);
maven_set_reg(md->client, 0x83, g->reg83);
maven_set_reg(md->client, 0x84, g->reg84);
maven_set_reg(md->client, 0x85, g->reg85);
maven_set_reg(md->client, 0x86, g->reg86);
maven_set_reg(md->client, 0x87, g->reg87);
maven_set_reg(md->client, 0x88, g->reg88);
maven_set_reg(md->client, 0x89, g->reg89);
maven_set_reg(md->client, 0x8a, g->reg8a);
maven_set_reg(md->client, 0x8b, g->reg8b);
}
break;
case MATROXFB_CID_TESTOUT:
{
unsigned char val
= maven_get_reg(md->client, 0x8d);
if (p->value) val |= 0x10;
else val &= ~0x10;
maven_set_reg(md->client, 0x8d, val);
}
break;
case MATROXFB_CID_DEFLICKER:
{
maven_set_reg(md->client, 0x93, maven_compute_deflicker(md));
}
break;
}
return 0;
}
static int maven_get_control (struct maven_data* md,
struct v4l2_control *p) {
int i;
i = get_ctrl_id(p->id);
if (i < 0) return -EINVAL;
p->value = *get_ctrl_ptr(md, i);
return 0;
}
/******************************************************/
static int maven_out_compute(void* md, struct my_timming* mt) {
#define mdinfo ((struct maven_data*)md)
#define minfo (mdinfo->primary_head)
return maven_compute_timming(md, mt, &minfo->hw.maven);
#undef minfo
#undef mdinfo
}
static int maven_out_program(void* md) {
#define mdinfo ((struct maven_data*)md)
#define minfo (mdinfo->primary_head)
return maven_program_timming(md, &minfo->hw.maven);
#undef minfo
#undef mdinfo
}
static int maven_out_start(void* md) {
return maven_resync(md);
}
static int maven_out_verify_mode(void* md, u_int32_t arg) {
switch (arg) {
case MATROXFB_OUTPUT_MODE_PAL:
case MATROXFB_OUTPUT_MODE_NTSC:
case MATROXFB_OUTPUT_MODE_MONITOR:
return 0;
}
return -EINVAL;
}
static int maven_out_get_queryctrl(void* md, struct v4l2_queryctrl* p) {
return maven_get_queryctrl(md, p);
}
static int maven_out_get_ctrl(void* md, struct v4l2_control* p) {
return maven_get_control(md, p);
}
static int maven_out_set_ctrl(void* md, struct v4l2_control* p) {
return maven_set_control(md, p);
}
static struct matrox_altout maven_altout = {
.name = "Secondary output",
.compute = maven_out_compute,
.program = maven_out_program,
.start = maven_out_start,
.verifymode = maven_out_verify_mode,
.getqueryctrl = maven_out_get_queryctrl,
.getctrl = maven_out_get_ctrl,
.setctrl = maven_out_set_ctrl,
};
static int maven_init_client(struct i2c_client* clnt) {
struct maven_data* md = i2c_get_clientdata(clnt);
struct matrox_fb_info *minfo = container_of(clnt->adapter,
struct i2c_bit_adapter,
adapter)->minfo;
md->primary_head = minfo;
md->client = clnt;
down_write(&minfo->altout.lock);
minfo->outputs[1].output = &maven_altout;
minfo->outputs[1].src = minfo->outputs[1].default_src;
minfo->outputs[1].data = md;
minfo->outputs[1].mode = MATROXFB_OUTPUT_MODE_MONITOR;
up_write(&minfo->altout.lock);
if (maven_get_reg(clnt, 0xB2) < 0x14) {
md->version = MGATVO_B;
/* Tweak some things for this old chip */
} else {
md->version = MGATVO_C;
}
/*
* Set all parameters to its initial values.
*/
{
unsigned int i;
for (i = 0; i < MAVCTRLS; ++i) {
*get_ctrl_ptr(md, i) = maven_controls[i].desc.default_value;
}
}
return 0;
}
static int maven_shutdown_client(struct i2c_client* clnt) {
struct maven_data* md = i2c_get_clientdata(clnt);
if (md->primary_head) {
struct matrox_fb_info *minfo = md->primary_head;
down_write(&minfo->altout.lock);
minfo->outputs[1].src = MATROXFB_SRC_NONE;
minfo->outputs[1].output = NULL;
minfo->outputs[1].data = NULL;
minfo->outputs[1].mode = MATROXFB_OUTPUT_MODE_MONITOR;
up_write(&minfo->altout.lock);
md->primary_head = NULL;
}
return 0;
}
static int maven_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = client->adapter;
int err = -ENODEV;
struct maven_data* data;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WRITE_WORD_DATA |
I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_PROTOCOL_MANGLING))
goto ERROR0;
if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
i2c_set_clientdata(client, data);
err = maven_init_client(client);
if (err)
goto ERROR4;
return 0;
ERROR4:;
kfree(data);
ERROR0:;
return err;
}
static int maven_remove(struct i2c_client *client)
{
maven_shutdown_client(client);
kfree(i2c_get_clientdata(client));
return 0;
}
static const struct i2c_device_id maven_id[] = {
{ "maven", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, maven_id);
static struct i2c_driver maven_driver={
.driver = {
.name = "maven",
},
.probe = maven_probe,
.remove = maven_remove,
.id_table = maven_id,
};
static int __init matroxfb_maven_init(void)
{
return i2c_add_driver(&maven_driver);
}
static void __exit matroxfb_maven_exit(void)
{
i2c_del_driver(&maven_driver);
}
MODULE_AUTHOR("(c) 1999-2002 Petr Vandrovec <vandrove@vc.cvut.cz>");
MODULE_DESCRIPTION("Matrox G200/G400 Matrox MGA-TVO driver");
MODULE_LICENSE("GPL");
module_init(matroxfb_maven_init);
module_exit(matroxfb_maven_exit);
/* we do not have __setup() yet */
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