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android-kvm/linux/14bd41e41899cbd1de4bb5ddfa46c85b08091a69/./drivers/gpu/drm/mgag200/mgag200_mode.c
blob: 1dfc4217005961aa42a5b03ec0b211667583672e [file]
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2010 Matt Turner.
* Copyright 2012 Red Hat
*
* Authors: Matthew Garrett
* Matt Turner
* Dave Airlie
*/
#include <linux/delay.h>
#include <linux/dma-buf-map.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic_state_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_damage_helper.h>
#include <drm/drm_format_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
#include "mgag200_drv.h"
#define MGAG200_LUT_SIZE 256
/*
* This file contains setup code for the CRTC.
*/
static void mga_crtc_load_lut(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct mga_device *mdev = to_mga_device(dev);
struct drm_framebuffer *fb;
u16 *r_ptr, *g_ptr, *b_ptr;
int i;
if (!crtc->enabled)
return;
if (!mdev->display_pipe.plane.state)
return;
fb = mdev->display_pipe.plane.state->fb;
r_ptr = crtc->gamma_store;
g_ptr = r_ptr + crtc->gamma_size;
b_ptr = g_ptr + crtc->gamma_size;
WREG8(DAC_INDEX + MGA1064_INDEX, 0);
if (fb && fb->format->cpp[0] * 8 == 16) {
int inc = (fb->format->depth == 15) ? 8 : 4;
u8 r, b;
for (i = 0; i < MGAG200_LUT_SIZE; i += inc) {
if (fb->format->depth == 16) {
if (i > (MGAG200_LUT_SIZE >> 1)) {
r = b = 0;
} else {
r = *r_ptr++ >> 8;
b = *b_ptr++ >> 8;
r_ptr++;
b_ptr++;
}
} else {
r = *r_ptr++ >> 8;
b = *b_ptr++ >> 8;
}
/* VGA registers */
WREG8(DAC_INDEX + MGA1064_COL_PAL, r);
WREG8(DAC_INDEX + MGA1064_COL_PAL, *g_ptr++ >> 8);
WREG8(DAC_INDEX + MGA1064_COL_PAL, b);
}
return;
}
for (i = 0; i < MGAG200_LUT_SIZE; i++) {
/* VGA registers */
WREG8(DAC_INDEX + MGA1064_COL_PAL, *r_ptr++ >> 8);
WREG8(DAC_INDEX + MGA1064_COL_PAL, *g_ptr++ >> 8);
WREG8(DAC_INDEX + MGA1064_COL_PAL, *b_ptr++ >> 8);
}
}
static inline void mga_wait_vsync(struct mga_device *mdev)
{
unsigned long timeout = jiffies + HZ/10;
unsigned int status = 0;
do {
status = RREG32(MGAREG_Status);
} while ((status & 0x08) && time_before(jiffies, timeout));
timeout = jiffies + HZ/10;
status = 0;
do {
status = RREG32(MGAREG_Status);
} while (!(status & 0x08) && time_before(jiffies, timeout));
}
static inline void mga_wait_busy(struct mga_device *mdev)
{
unsigned long timeout = jiffies + HZ;
unsigned int status = 0;
do {
status = RREG8(MGAREG_Status + 2);
} while ((status & 0x01) && time_before(jiffies, timeout));
}
/*
* PLL setup
*/
static int mgag200_g200_set_plls(struct mga_device *mdev, long clock)
{
struct drm_device *dev = &mdev->base;
const int post_div_max = 7;
const int in_div_min = 1;
const int in_div_max = 6;
const int feed_div_min = 7;
const int feed_div_max = 127;
u8 testm, testn;
u8 n = 0, m = 0, p, s;
long f_vco;
long computed;
long delta, tmp_delta;
long ref_clk = mdev->model.g200.ref_clk;
long p_clk_min = mdev->model.g200.pclk_min;
long p_clk_max = mdev->model.g200.pclk_max;
if (clock > p_clk_max) {
drm_err(dev, "Pixel Clock %ld too high\n", clock);
return 1;
}
if (clock < p_clk_min >> 3)
clock = p_clk_min >> 3;
f_vco = clock;
for (p = 0;
p <= post_div_max && f_vco < p_clk_min;
p = (p << 1) + 1, f_vco <<= 1)
;
delta = clock;
for (testm = in_div_min; testm <= in_div_max; testm++) {
for (testn = feed_div_min; testn <= feed_div_max; testn++) {
computed = ref_clk * (testn + 1) / (testm + 1);
if (computed < f_vco)
tmp_delta = f_vco - computed;
else
tmp_delta = computed - f_vco;
if (tmp_delta < delta) {
delta = tmp_delta;
m = testm;
n = testn;
}
}
}
f_vco = ref_clk * (n + 1) / (m + 1);
if (f_vco < 100000)
s = 0;
else if (f_vco < 140000)
s = 1;
else if (f_vco < 180000)
s = 2;
else
s = 3;
drm_dbg_kms(dev, "clock: %ld vco: %ld m: %d n: %d p: %d s: %d\n",
clock, f_vco, m, n, p, s);
WREG_DAC(MGA1064_PIX_PLLC_M, m);
WREG_DAC(MGA1064_PIX_PLLC_N, n);
WREG_DAC(MGA1064_PIX_PLLC_P, (p | (s << 3)));
return 0;
}
#define P_ARRAY_SIZE 9
static int mga_g200se_set_plls(struct mga_device *mdev, long clock)
{
u32 unique_rev_id = mdev->model.g200se.unique_rev_id;
unsigned int vcomax, vcomin, pllreffreq;
unsigned int delta, tmpdelta, permitteddelta;
unsigned int testp, testm, testn;
unsigned int p, m, n;
unsigned int computed;
unsigned int pvalues_e4[P_ARRAY_SIZE] = {16, 14, 12, 10, 8, 6, 4, 2, 1};
unsigned int fvv;
unsigned int i;
if (unique_rev_id <= 0x03) {
m = n = p = 0;
vcomax = 320000;
vcomin = 160000;
pllreffreq = 25000;
delta = 0xffffffff;
permitteddelta = clock * 5 / 1000;
for (testp = 8; testp > 0; testp /= 2) {
if (clock * testp > vcomax)
continue;
if (clock * testp < vcomin)
continue;
for (testn = 17; testn < 256; testn++) {
for (testm = 1; testm < 32; testm++) {
computed = (pllreffreq * testn) /
(testm * testp);
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
m = testm - 1;
n = testn - 1;
p = testp - 1;
}
}
}
}
} else {
m = n = p = 0;
vcomax = 1600000;
vcomin = 800000;
pllreffreq = 25000;
if (clock < 25000)
clock = 25000;
clock = clock * 2;
delta = 0xFFFFFFFF;
/* Permited delta is 0.5% as VESA Specification */
permitteddelta = clock * 5 / 1000;
for (i = 0 ; i < P_ARRAY_SIZE ; i++) {
testp = pvalues_e4[i];
if ((clock * testp) > vcomax)
continue;
if ((clock * testp) < vcomin)
continue;
for (testn = 50; testn <= 256; testn++) {
for (testm = 1; testm <= 32; testm++) {
computed = (pllreffreq * testn) /
(testm * testp);
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
m = testm - 1;
n = testn - 1;
p = testp - 1;
}
}
}
}
fvv = pllreffreq * (n + 1) / (m + 1);
fvv = (fvv - 800000) / 50000;
if (fvv > 15)
fvv = 15;
p |= (fvv << 4);
m |= 0x80;
clock = clock / 2;
}
if (delta > permitteddelta) {
pr_warn("PLL delta too large\n");
return 1;
}
WREG_DAC(MGA1064_PIX_PLLC_M, m);
WREG_DAC(MGA1064_PIX_PLLC_N, n);
WREG_DAC(MGA1064_PIX_PLLC_P, p);
if (unique_rev_id >= 0x04) {
WREG_DAC(0x1a, 0x09);
msleep(20);
WREG_DAC(0x1a, 0x01);
}
return 0;
}
static int mga_g200wb_set_plls(struct mga_device *mdev, long clock)
{
unsigned int vcomax, vcomin, pllreffreq;
unsigned int delta, tmpdelta;
unsigned int testp, testm, testn, testp2;
unsigned int p, m, n;
unsigned int computed;
int i, j, tmpcount, vcount;
bool pll_locked = false;
u8 tmp;
m = n = p = 0;
delta = 0xffffffff;
if (mdev->type == G200_EW3) {
vcomax = 800000;
vcomin = 400000;
pllreffreq = 25000;
for (testp = 1; testp < 8; testp++) {
for (testp2 = 1; testp2 < 8; testp2++) {
if (testp < testp2)
continue;
if ((clock * testp * testp2) > vcomax)
continue;
if ((clock * testp * testp2) < vcomin)
continue;
for (testm = 1; testm < 26; testm++) {
for (testn = 32; testn < 2048 ; testn++) {
computed = (pllreffreq * testn) /
(testm * testp * testp2);
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
m = ((testn & 0x100) >> 1) |
(testm);
n = (testn & 0xFF);
p = ((testn & 0x600) >> 3) |
(testp2 << 3) |
(testp);
}
}
}
}
}
} else {
vcomax = 550000;
vcomin = 150000;
pllreffreq = 48000;
for (testp = 1; testp < 9; testp++) {
if (clock * testp > vcomax)
continue;
if (clock * testp < vcomin)
continue;
for (testm = 1; testm < 17; testm++) {
for (testn = 1; testn < 151; testn++) {
computed = (pllreffreq * testn) /
(testm * testp);
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
n = testn - 1;
m = (testm - 1) |
((n >> 1) & 0x80);
p = testp - 1;
}
}
}
}
}
for (i = 0; i <= 32 && pll_locked == false; i++) {
if (i > 0) {
WREG8(MGAREG_CRTC_INDEX, 0x1e);
tmp = RREG8(MGAREG_CRTC_DATA);
if (tmp < 0xff)
WREG8(MGAREG_CRTC_DATA, tmp+1);
}
/* set pixclkdis to 1 */
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
WREG8(DAC_DATA, tmp);
WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_REMHEADCTL_CLKDIS;
WREG8(DAC_DATA, tmp);
/* select PLL Set C */
tmp = RREG8(MGAREG_MEM_MISC_READ);
tmp |= 0x3 << 2;
WREG8(MGAREG_MEM_MISC_WRITE, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN | 0x80;
WREG8(DAC_DATA, tmp);
udelay(500);
/* reset the PLL */
WREG8(DAC_INDEX, MGA1064_VREF_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~0x04;
WREG8(DAC_DATA, tmp);
udelay(50);
/* program pixel pll register */
WREG_DAC(MGA1064_WB_PIX_PLLC_N, n);
WREG_DAC(MGA1064_WB_PIX_PLLC_M, m);
WREG_DAC(MGA1064_WB_PIX_PLLC_P, p);
udelay(50);
/* turn pll on */
WREG8(DAC_INDEX, MGA1064_VREF_CTL);
tmp = RREG8(DAC_DATA);
tmp |= 0x04;
WREG_DAC(MGA1064_VREF_CTL, tmp);
udelay(500);
/* select the pixel pll */
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
WREG8(DAC_DATA, tmp);
WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_REMHEADCTL_CLKSL_MSK;
tmp |= MGA1064_REMHEADCTL_CLKSL_PLL;
WREG8(DAC_DATA, tmp);
/* reset dotclock rate bit */
WREG8(MGAREG_SEQ_INDEX, 1);
tmp = RREG8(MGAREG_SEQ_DATA);
tmp &= ~0x8;
WREG8(MGAREG_SEQ_DATA, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
WREG8(DAC_DATA, tmp);
vcount = RREG8(MGAREG_VCOUNT);
for (j = 0; j < 30 && pll_locked == false; j++) {
tmpcount = RREG8(MGAREG_VCOUNT);
if (tmpcount < vcount)
vcount = 0;
if ((tmpcount - vcount) > 2)
pll_locked = true;
else
udelay(5);
}
}
WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_REMHEADCTL_CLKDIS;
WREG_DAC(MGA1064_REMHEADCTL, tmp);
return 0;
}
static int mga_g200ev_set_plls(struct mga_device *mdev, long clock)
{
unsigned int vcomax, vcomin, pllreffreq;
unsigned int delta, tmpdelta;
unsigned int testp, testm, testn;
unsigned int p, m, n;
unsigned int computed;
u8 tmp;
m = n = p = 0;
vcomax = 550000;
vcomin = 150000;
pllreffreq = 50000;
delta = 0xffffffff;
for (testp = 16; testp > 0; testp--) {
if (clock * testp > vcomax)
continue;
if (clock * testp < vcomin)
continue;
for (testn = 1; testn < 257; testn++) {
for (testm = 1; testm < 17; testm++) {
computed = (pllreffreq * testn) /
(testm * testp);
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
n = testn - 1;
m = testm - 1;
p = testp - 1;
}
}
}
}
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
WREG8(DAC_DATA, tmp);
tmp = RREG8(MGAREG_MEM_MISC_READ);
tmp |= 0x3 << 2;
WREG8(MGAREG_MEM_MISC_WRITE, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT);
tmp = RREG8(DAC_DATA);
WREG8(DAC_DATA, tmp & ~0x40);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
WREG8(DAC_DATA, tmp);
WREG_DAC(MGA1064_EV_PIX_PLLC_M, m);
WREG_DAC(MGA1064_EV_PIX_PLLC_N, n);
WREG_DAC(MGA1064_EV_PIX_PLLC_P, p);
udelay(50);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
WREG8(DAC_DATA, tmp);
udelay(500);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
WREG8(DAC_DATA, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_PLL_STAT);
tmp = RREG8(DAC_DATA);
WREG8(DAC_DATA, tmp | 0x40);
tmp = RREG8(MGAREG_MEM_MISC_READ);
tmp |= (0x3 << 2);
WREG8(MGAREG_MEM_MISC_WRITE, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
WREG8(DAC_DATA, tmp);
return 0;
}
static int mga_g200eh_set_plls(struct mga_device *mdev, long clock)
{
unsigned int vcomax, vcomin, pllreffreq;
unsigned int delta, tmpdelta;
unsigned int testp, testm, testn;
unsigned int p, m, n;
unsigned int computed;
int i, j, tmpcount, vcount;
u8 tmp;
bool pll_locked = false;
m = n = p = 0;
if (mdev->type == G200_EH3) {
vcomax = 3000000;
vcomin = 1500000;
pllreffreq = 25000;
delta = 0xffffffff;
testp = 0;
for (testm = 150; testm >= 6; testm--) {
if (clock * testm > vcomax)
continue;
if (clock * testm < vcomin)
continue;
for (testn = 120; testn >= 60; testn--) {
computed = (pllreffreq * testn) / testm;
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
n = testn;
m = testm;
p = testp;
}
if (delta == 0)
break;
}
if (delta == 0)
break;
}
} else {
vcomax = 800000;
vcomin = 400000;
pllreffreq = 33333;
delta = 0xffffffff;
for (testp = 16; testp > 0; testp >>= 1) {
if (clock * testp > vcomax)
continue;
if (clock * testp < vcomin)
continue;
for (testm = 1; testm < 33; testm++) {
for (testn = 17; testn < 257; testn++) {
computed = (pllreffreq * testn) /
(testm * testp);
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
n = testn - 1;
m = (testm - 1);
p = testp - 1;
}
if ((clock * testp) >= 600000)
p |= 0x80;
}
}
}
}
for (i = 0; i <= 32 && pll_locked == false; i++) {
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
WREG8(DAC_DATA, tmp);
tmp = RREG8(MGAREG_MEM_MISC_READ);
tmp |= 0x3 << 2;
WREG8(MGAREG_MEM_MISC_WRITE, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
WREG8(DAC_DATA, tmp);
udelay(500);
WREG_DAC(MGA1064_EH_PIX_PLLC_M, m);
WREG_DAC(MGA1064_EH_PIX_PLLC_N, n);
WREG_DAC(MGA1064_EH_PIX_PLLC_P, p);
udelay(500);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_SEL_MSK;
tmp |= MGA1064_PIX_CLK_CTL_SEL_PLL;
WREG8(DAC_DATA, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
tmp &= ~MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
WREG8(DAC_DATA, tmp);
vcount = RREG8(MGAREG_VCOUNT);
for (j = 0; j < 30 && pll_locked == false; j++) {
tmpcount = RREG8(MGAREG_VCOUNT);
if (tmpcount < vcount)
vcount = 0;
if ((tmpcount - vcount) > 2)
pll_locked = true;
else
udelay(5);
}
}
return 0;
}
static int mga_g200er_set_plls(struct mga_device *mdev, long clock)
{
unsigned int vcomax, vcomin, pllreffreq;
unsigned int delta, tmpdelta;
int testr, testn, testm, testo;
unsigned int p, m, n;
unsigned int computed, vco;
int tmp;
const unsigned int m_div_val[] = { 1, 2, 4, 8 };
m = n = p = 0;
vcomax = 1488000;
vcomin = 1056000;
pllreffreq = 48000;
delta = 0xffffffff;
for (testr = 0; testr < 4; testr++) {
if (delta == 0)
break;
for (testn = 5; testn < 129; testn++) {
if (delta == 0)
break;
for (testm = 3; testm >= 0; testm--) {
if (delta == 0)
break;
for (testo = 5; testo < 33; testo++) {
vco = pllreffreq * (testn + 1) /
(testr + 1);
if (vco < vcomin)
continue;
if (vco > vcomax)
continue;
computed = vco / (m_div_val[testm] * (testo + 1));
if (computed > clock)
tmpdelta = computed - clock;
else
tmpdelta = clock - computed;
if (tmpdelta < delta) {
delta = tmpdelta;
m = testm | (testo << 3);
n = testn;
p = testr | (testr << 3);
}
}
}
}
}
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_PIX_CLK_CTL_CLK_DIS;
WREG8(DAC_DATA, tmp);
WREG8(DAC_INDEX, MGA1064_REMHEADCTL);
tmp = RREG8(DAC_DATA);
tmp |= MGA1064_REMHEADCTL_CLKDIS;
WREG8(DAC_DATA, tmp);
tmp = RREG8(MGAREG_MEM_MISC_READ);
tmp |= (0x3<<2) | 0xc0;
WREG8(MGAREG_MEM_MISC_WRITE, tmp);
WREG8(DAC_INDEX, MGA1064_PIX_CLK_CTL);
tmp = RREG8(DAC_DATA);
tmp &= ~MGA1064_PIX_CLK_CTL_CLK_DIS;
tmp |= MGA1064_PIX_CLK_CTL_CLK_POW_DOWN;
WREG8(DAC_DATA, tmp);
udelay(500);
WREG_DAC(MGA1064_ER_PIX_PLLC_N, n);
WREG_DAC(MGA1064_ER_PIX_PLLC_M, m);
WREG_DAC(MGA1064_ER_PIX_PLLC_P, p);
udelay(50);
return 0;
}
static int mgag200_crtc_set_plls(struct mga_device *mdev, long clock)
{
u8 misc;
switch(mdev->type) {
case G200_PCI:
case G200_AGP:
return mgag200_g200_set_plls(mdev, clock);
case G200_SE_A:
case G200_SE_B:
return mga_g200se_set_plls(mdev, clock);
case G200_WB:
case G200_EW3:
return mga_g200wb_set_plls(mdev, clock);
case G200_EV:
return mga_g200ev_set_plls(mdev, clock);
case G200_EH:
case G200_EH3:
return mga_g200eh_set_plls(mdev, clock);
case G200_ER:
return mga_g200er_set_plls(mdev, clock);
}
misc = RREG8(MGA_MISC_IN);
misc &= ~MGAREG_MISC_CLK_SEL_MASK;
misc |= MGAREG_MISC_CLK_SEL_MGA_MSK;
WREG8(MGA_MISC_OUT, misc);
return 0;
}
static void mgag200_g200wb_hold_bmc(struct mga_device *mdev)
{
u8 tmp;
int iter_max;
/* 1- The first step is to warn the BMC of an upcoming mode change.
* We are putting the misc<0> to output.*/
WREG8(DAC_INDEX, MGA1064_GEN_IO_CTL);
tmp = RREG8(DAC_DATA);
tmp |= 0x10;
WREG_DAC(MGA1064_GEN_IO_CTL, tmp);
/* we are putting a 1 on the misc<0> line */
WREG8(DAC_INDEX, MGA1064_GEN_IO_DATA);
tmp = RREG8(DAC_DATA);
tmp |= 0x10;
WREG_DAC(MGA1064_GEN_IO_DATA, tmp);
/* 2- Second step to mask and further scan request
* This will be done by asserting the remfreqmsk bit (XSPAREREG<7>)
*/
WREG8(DAC_INDEX, MGA1064_SPAREREG);
tmp = RREG8(DAC_DATA);
tmp |= 0x80;
WREG_DAC(MGA1064_SPAREREG, tmp);
/* 3a- the third step is to verifu if there is an active scan
* We are searching for a 0 on remhsyncsts <XSPAREREG<0>)
*/
iter_max = 300;
while (!(tmp & 0x1) && iter_max) {
WREG8(DAC_INDEX, MGA1064_SPAREREG);
tmp = RREG8(DAC_DATA);
udelay(1000);
iter_max--;
}
/* 3b- this step occurs only if the remove is actually scanning
* we are waiting for the end of the frame which is a 1 on
* remvsyncsts (XSPAREREG<1>)
*/
if (iter_max) {
iter_max = 300;
while ((tmp & 0x2) && iter_max) {
WREG8(DAC_INDEX, MGA1064_SPAREREG);
tmp = RREG8(DAC_DATA);
udelay(1000);
iter_max--;
}
}
}
static void mgag200_g200wb_release_bmc(struct mga_device *mdev)
{
u8 tmp;
/* 1- The first step is to ensure that the vrsten and hrsten are set */
WREG8(MGAREG_CRTCEXT_INDEX, 1);
tmp = RREG8(MGAREG_CRTCEXT_DATA);
WREG8(MGAREG_CRTCEXT_DATA, tmp | 0x88);
/* 2- second step is to assert the rstlvl2 */
WREG8(DAC_INDEX, MGA1064_REMHEADCTL2);
tmp = RREG8(DAC_DATA);
tmp |= 0x8;
WREG8(DAC_DATA, tmp);
/* wait 10 us */
udelay(10);
/* 3- deassert rstlvl2 */
tmp &= ~0x08;
WREG8(DAC_INDEX, MGA1064_REMHEADCTL2);
WREG8(DAC_DATA, tmp);
/* 4- remove mask of scan request */
WREG8(DAC_INDEX, MGA1064_SPAREREG);
tmp = RREG8(DAC_DATA);
tmp &= ~0x80;
WREG8(DAC_DATA, tmp);
/* 5- put back a 0 on the misc<0> line */
WREG8(DAC_INDEX, MGA1064_GEN_IO_DATA);
tmp = RREG8(DAC_DATA);
tmp &= ~0x10;
WREG_DAC(MGA1064_GEN_IO_DATA, tmp);
}
/*
* This is how the framebuffer base address is stored in g200 cards:
* * Assume @offset is the gpu_addr variable of the framebuffer object
* * Then addr is the number of _pixels_ (not bytes) from the start of
* VRAM to the first pixel we want to display. (divided by 2 for 32bit
* framebuffers)
* * addr is stored in the CRTCEXT0, CRTCC and CRTCD registers
* addr<20> -> CRTCEXT0<6>
* addr<19-16> -> CRTCEXT0<3-0>
* addr<15-8> -> CRTCC<7-0>
* addr<7-0> -> CRTCD<7-0>
*
* CRTCEXT0 has to be programmed last to trigger an update and make the
* new addr variable take effect.
*/
static void mgag200_set_startadd(struct mga_device *mdev,
unsigned long offset)
{
struct drm_device *dev = &mdev->base;
u32 startadd;
u8 crtcc, crtcd, crtcext0;
startadd = offset / 8;
/*
* Can't store addresses any higher than that, but we also
* don't have more than 16 MiB of memory, so it should be fine.
*/
drm_WARN_ON(dev, startadd > 0x1fffff);
RREG_ECRT(0x00, crtcext0);
crtcc = (startadd >> 8) & 0xff;
crtcd = startadd & 0xff;
crtcext0 &= 0xb0;
crtcext0 |= ((startadd >> 14) & BIT(6)) |
((startadd >> 16) & 0x0f);
WREG_CRT(0x0c, crtcc);
WREG_CRT(0x0d, crtcd);
WREG_ECRT(0x00, crtcext0);
}
static void mgag200_set_dac_regs(struct mga_device *mdev)
{
size_t i;
u8 dacvalue[] = {
/* 0x00: */ 0, 0, 0, 0, 0, 0, 0x00, 0,
/* 0x08: */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x10: */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x18: */ 0x00, 0, 0xC9, 0xFF, 0xBF, 0x20, 0x1F, 0x20,
/* 0x20: */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 0x28: */ 0x00, 0x00, 0x00, 0x00, 0, 0, 0, 0x40,
/* 0x30: */ 0x00, 0xB0, 0x00, 0xC2, 0x34, 0x14, 0x02, 0x83,
/* 0x38: */ 0x00, 0x93, 0x00, 0x77, 0x00, 0x00, 0x00, 0x3A,
/* 0x40: */ 0, 0, 0, 0, 0, 0, 0, 0,
/* 0x48: */ 0, 0, 0, 0, 0, 0, 0, 0
};
switch (mdev->type) {
case G200_PCI:
case G200_AGP:
dacvalue[MGA1064_SYS_PLL_M] = 0x04;
dacvalue[MGA1064_SYS_PLL_N] = 0x2D;
dacvalue[MGA1064_SYS_PLL_P] = 0x19;
break;
case G200_SE_A:
case G200_SE_B:
dacvalue[MGA1064_VREF_CTL] = 0x03;
dacvalue[MGA1064_PIX_CLK_CTL] = MGA1064_PIX_CLK_CTL_SEL_PLL;
dacvalue[MGA1064_MISC_CTL] = MGA1064_MISC_CTL_DAC_EN |
MGA1064_MISC_CTL_VGA8 |
MGA1064_MISC_CTL_DAC_RAM_CS;
break;
case G200_WB:
case G200_EW3:
dacvalue[MGA1064_VREF_CTL] = 0x07;
break;
case G200_EV:
dacvalue[MGA1064_PIX_CLK_CTL] = MGA1064_PIX_CLK_CTL_SEL_PLL;
dacvalue[MGA1064_MISC_CTL] = MGA1064_MISC_CTL_VGA8 |
MGA1064_MISC_CTL_DAC_RAM_CS;
break;
case G200_EH:
case G200_EH3:
dacvalue[MGA1064_MISC_CTL] = MGA1064_MISC_CTL_VGA8 |
MGA1064_MISC_CTL_DAC_RAM_CS;
break;
case G200_ER:
break;
}
for (i = 0; i < ARRAY_SIZE(dacvalue); i++) {
if ((i <= 0x17) ||
(i == 0x1b) ||
(i == 0x1c) ||
((i >= 0x1f) && (i <= 0x29)) ||
((i >= 0x30) && (i <= 0x37)))
continue;
if (IS_G200_SE(mdev) &&
((i == 0x2c) || (i == 0x2d) || (i == 0x2e)))
continue;
if ((mdev->type == G200_EV ||
mdev->type == G200_WB ||
mdev->type == G200_EH ||
mdev->type == G200_EW3 ||
mdev->type == G200_EH3) &&
(i >= 0x44) && (i <= 0x4e))
continue;
WREG_DAC(i, dacvalue[i]);
}
if (mdev->type == G200_ER)
WREG_DAC(0x90, 0);
}
static void mgag200_init_regs(struct mga_device *mdev)
{
u8 crtc11, misc;
mgag200_set_dac_regs(mdev);
WREG_SEQ(2, 0x0f);
WREG_SEQ(3, 0x00);
WREG_SEQ(4, 0x0e);
WREG_CRT(10, 0);
WREG_CRT(11, 0);
WREG_CRT(12, 0);
WREG_CRT(13, 0);
WREG_CRT(14, 0);
WREG_CRT(15, 0);
RREG_CRT(0x11, crtc11);
crtc11 &= ~(MGAREG_CRTC11_CRTCPROTECT |
MGAREG_CRTC11_VINTEN |
MGAREG_CRTC11_VINTCLR);
WREG_CRT(0x11, crtc11);
if (mdev->type == G200_ER)
WREG_ECRT(0x24, 0x5);
if (mdev->type == G200_EW3)
WREG_ECRT(0x34, 0x5);
misc = RREG8(MGA_MISC_IN);
misc |= MGAREG_MISC_IOADSEL;
WREG8(MGA_MISC_OUT, misc);
}
static void mgag200_set_mode_regs(struct mga_device *mdev,
const struct drm_display_mode *mode)
{
unsigned int hdisplay, hsyncstart, hsyncend, htotal;
unsigned int vdisplay, vsyncstart, vsyncend, vtotal;
u8 misc, crtcext1, crtcext2, crtcext5;
hdisplay = mode->hdisplay / 8 - 1;
hsyncstart = mode->hsync_start / 8 - 1;
hsyncend = mode->hsync_end / 8 - 1;
htotal = mode->htotal / 8 - 1;
/* Work around hardware quirk */
if ((htotal & 0x07) == 0x06 || (htotal & 0x07) == 0x04)
htotal++;
vdisplay = mode->vdisplay - 1;
vsyncstart = mode->vsync_start - 1;
vsyncend = mode->vsync_end - 1;
vtotal = mode->vtotal - 2;
misc = RREG8(MGA_MISC_IN);
if (mode->flags & DRM_MODE_FLAG_NHSYNC)
misc |= MGAREG_MISC_HSYNCPOL;
else
misc &= ~MGAREG_MISC_HSYNCPOL;
if (mode->flags & DRM_MODE_FLAG_NVSYNC)
misc |= MGAREG_MISC_VSYNCPOL;
else
misc &= ~MGAREG_MISC_VSYNCPOL;
crtcext1 = (((htotal - 4) & 0x100) >> 8) |
((hdisplay & 0x100) >> 7) |
((hsyncstart & 0x100) >> 6) |
(htotal & 0x40);
if (mdev->type == G200_WB || mdev->type == G200_EW3)
crtcext1 |= BIT(7) | /* vrsten */
BIT(3); /* hrsten */
crtcext2 = ((vtotal & 0xc00) >> 10) |
((vdisplay & 0x400) >> 8) |
((vdisplay & 0xc00) >> 7) |
((vsyncstart & 0xc00) >> 5) |
((vdisplay & 0x400) >> 3);
crtcext5 = 0x00;
WREG_CRT(0, htotal - 4);
WREG_CRT(1, hdisplay);
WREG_CRT(2, hdisplay);
WREG_CRT(3, (htotal & 0x1F) | 0x80);
WREG_CRT(4, hsyncstart);
WREG_CRT(5, ((htotal & 0x20) << 2) | (hsyncend & 0x1F));
WREG_CRT(6, vtotal & 0xFF);
WREG_CRT(7, ((vtotal & 0x100) >> 8) |
((vdisplay & 0x100) >> 7) |
((vsyncstart & 0x100) >> 6) |
((vdisplay & 0x100) >> 5) |
((vdisplay & 0x100) >> 4) | /* linecomp */
((vtotal & 0x200) >> 4) |
((vdisplay & 0x200) >> 3) |
((vsyncstart & 0x200) >> 2));
WREG_CRT(9, ((vdisplay & 0x200) >> 4) |
((vdisplay & 0x200) >> 3));
WREG_CRT(16, vsyncstart & 0xFF);
WREG_CRT(17, (vsyncend & 0x0F) | 0x20);
WREG_CRT(18, vdisplay & 0xFF);
WREG_CRT(20, 0);
WREG_CRT(21, vdisplay & 0xFF);
WREG_CRT(22, (vtotal + 1) & 0xFF);
WREG_CRT(23, 0xc3);
WREG_CRT(24, vdisplay & 0xFF);
WREG_ECRT(0x01, crtcext1);
WREG_ECRT(0x02, crtcext2);
WREG_ECRT(0x05, crtcext5);
WREG8(MGA_MISC_OUT, misc);
}
static u8 mgag200_get_bpp_shift(struct mga_device *mdev,
const struct drm_format_info *format)
{
return mdev->bpp_shifts[format->cpp[0] - 1];
}
/*
* Calculates the HW offset value from the framebuffer's pitch. The
* offset is a multiple of the pixel size and depends on the display
* format.
*/
static u32 mgag200_calculate_offset(struct mga_device *mdev,
const struct drm_framebuffer *fb)
{
u32 offset = fb->pitches[0] / fb->format->cpp[0];
u8 bppshift = mgag200_get_bpp_shift(mdev, fb->format);
if (fb->format->cpp[0] * 8 == 24)
offset = (offset * 3) >> (4 - bppshift);
else
offset = offset >> (4 - bppshift);
return offset;
}
static void mgag200_set_offset(struct mga_device *mdev,
const struct drm_framebuffer *fb)
{
u8 crtc13, crtcext0;
u32 offset = mgag200_calculate_offset(mdev, fb);
RREG_ECRT(0, crtcext0);
crtc13 = offset & 0xff;
crtcext0 &= ~MGAREG_CRTCEXT0_OFFSET_MASK;
crtcext0 |= (offset >> 4) & MGAREG_CRTCEXT0_OFFSET_MASK;
WREG_CRT(0x13, crtc13);
WREG_ECRT(0x00, crtcext0);
}
static void mgag200_set_format_regs(struct mga_device *mdev,
const struct drm_framebuffer *fb)
{
struct drm_device *dev = &mdev->base;
const struct drm_format_info *format = fb->format;
unsigned int bpp, bppshift, scale;
u8 crtcext3, xmulctrl;
bpp = format->cpp[0] * 8;
bppshift = mgag200_get_bpp_shift(mdev, format);
switch (bpp) {
case 24:
scale = ((1 << bppshift) * 3) - 1;
break;
default:
scale = (1 << bppshift) - 1;
break;
}
RREG_ECRT(3, crtcext3);
switch (bpp) {
case 8:
xmulctrl = MGA1064_MUL_CTL_8bits;
break;
case 16:
if (format->depth == 15)
xmulctrl = MGA1064_MUL_CTL_15bits;
else
xmulctrl = MGA1064_MUL_CTL_16bits;
break;
case 24:
xmulctrl = MGA1064_MUL_CTL_24bits;
break;
case 32:
xmulctrl = MGA1064_MUL_CTL_32_24bits;
break;
default:
/* BUG: We should have caught this problem already. */
drm_WARN_ON(dev, "invalid format depth\n");
return;
}
crtcext3 &= ~GENMASK(2, 0);
crtcext3 |= scale;
WREG_DAC(MGA1064_MUL_CTL, xmulctrl);
WREG_GFX(0, 0x00);
WREG_GFX(1, 0x00);
WREG_GFX(2, 0x00);
WREG_GFX(3, 0x00);
WREG_GFX(4, 0x00);
WREG_GFX(5, 0x40);
WREG_GFX(6, 0x05);
WREG_GFX(7, 0x0f);
WREG_GFX(8, 0x0f);
WREG_ECRT(3, crtcext3);
}
static void mgag200_g200er_reset_tagfifo(struct mga_device *mdev)
{
static uint32_t RESET_FLAG = 0x00200000; /* undocumented magic value */
u32 memctl;
memctl = RREG32(MGAREG_MEMCTL);
memctl |= RESET_FLAG;
WREG32(MGAREG_MEMCTL, memctl);
udelay(1000);
memctl &= ~RESET_FLAG;
WREG32(MGAREG_MEMCTL, memctl);
}
static void mgag200_g200se_set_hiprilvl(struct mga_device *mdev,
const struct drm_display_mode *mode,
const struct drm_framebuffer *fb)
{
u32 unique_rev_id = mdev->model.g200se.unique_rev_id;
unsigned int hiprilvl;
u8 crtcext6;
if (unique_rev_id >= 0x04) {
hiprilvl = 0;
} else if (unique_rev_id >= 0x02) {
unsigned int bpp;
unsigned long mb;
if (fb->format->cpp[0] * 8 > 16)
bpp = 32;
else if (fb->format->cpp[0] * 8 > 8)
bpp = 16;
else
bpp = 8;
mb = (mode->clock * bpp) / 1000;
if (mb > 3100)
hiprilvl = 0;
else if (mb > 2600)
hiprilvl = 1;
else if (mb > 1900)
hiprilvl = 2;
else if (mb > 1160)
hiprilvl = 3;
else if (mb > 440)
hiprilvl = 4;
else
hiprilvl = 5;
} else if (unique_rev_id >= 0x01) {
hiprilvl = 3;
} else {
hiprilvl = 4;
}
crtcext6 = hiprilvl; /* implicitly sets maxhipri to 0 */
WREG_ECRT(0x06, crtcext6);
}
static void mgag200_g200ev_set_hiprilvl(struct mga_device *mdev)
{
WREG_ECRT(0x06, 0x00);
}
static void mgag200_enable_display(struct mga_device *mdev)
{
u8 seq0, seq1, crtcext1;
RREG_SEQ(0x00, seq0);
seq0 |= MGAREG_SEQ0_SYNCRST |
MGAREG_SEQ0_ASYNCRST;
WREG_SEQ(0x00, seq0);
/*
* TODO: replace busy waiting with vblank IRQ; put
* msleep(50) before changing SCROFF
*/
mga_wait_vsync(mdev);
mga_wait_busy(mdev);
RREG_SEQ(0x01, seq1);
seq1 &= ~MGAREG_SEQ1_SCROFF;
WREG_SEQ(0x01, seq1);
msleep(20);
RREG_ECRT(0x01, crtcext1);
crtcext1 &= ~MGAREG_CRTCEXT1_VSYNCOFF;
crtcext1 &= ~MGAREG_CRTCEXT1_HSYNCOFF;
WREG_ECRT(0x01, crtcext1);
}
static void mgag200_disable_display(struct mga_device *mdev)
{
u8 seq0, seq1, crtcext1;
RREG_SEQ(0x00, seq0);
seq0 &= ~MGAREG_SEQ0_SYNCRST;
WREG_SEQ(0x00, seq0);
/*
* TODO: replace busy waiting with vblank IRQ; put
* msleep(50) before changing SCROFF
*/
mga_wait_vsync(mdev);
mga_wait_busy(mdev);
RREG_SEQ(0x01, seq1);
seq1 |= MGAREG_SEQ1_SCROFF;
WREG_SEQ(0x01, seq1);
msleep(20);
RREG_ECRT(0x01, crtcext1);
crtcext1 |= MGAREG_CRTCEXT1_VSYNCOFF |
MGAREG_CRTCEXT1_HSYNCOFF;
WREG_ECRT(0x01, crtcext1);
}
/*
* Connector
*/
static int mga_vga_get_modes(struct drm_connector *connector)
{
struct mga_connector *mga_connector = to_mga_connector(connector);
struct edid *edid;
int ret = 0;
edid = drm_get_edid(connector, &mga_connector->i2c->adapter);
if (edid) {
drm_connector_update_edid_property(connector, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
}
return ret;
}
static uint32_t mga_vga_calculate_mode_bandwidth(struct drm_display_mode *mode,
int bits_per_pixel)
{
uint32_t total_area, divisor;
uint64_t active_area, pixels_per_second, bandwidth;
uint64_t bytes_per_pixel = (bits_per_pixel + 7) / 8;
divisor = 1024;
if (!mode->htotal || !mode->vtotal || !mode->clock)
return 0;
active_area = mode->hdisplay * mode->vdisplay;
total_area = mode->htotal * mode->vtotal;
pixels_per_second = active_area * mode->clock * 1000;
do_div(pixels_per_second, total_area);
bandwidth = pixels_per_second * bytes_per_pixel * 100;
do_div(bandwidth, divisor);
return (uint32_t)(bandwidth);
}
#define MODE_BANDWIDTH MODE_BAD
static enum drm_mode_status mga_vga_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct drm_device *dev = connector->dev;
struct mga_device *mdev = to_mga_device(dev);
int bpp = 32;
if (IS_G200_SE(mdev)) {
u32 unique_rev_id = mdev->model.g200se.unique_rev_id;
if (unique_rev_id == 0x01) {
if (mode->hdisplay > 1600)
return MODE_VIRTUAL_X;
if (mode->vdisplay > 1200)
return MODE_VIRTUAL_Y;
if (mga_vga_calculate_mode_bandwidth(mode, bpp)
> (24400 * 1024))
return MODE_BANDWIDTH;
} else if (unique_rev_id == 0x02) {
if (mode->hdisplay > 1920)
return MODE_VIRTUAL_X;
if (mode->vdisplay > 1200)
return MODE_VIRTUAL_Y;
if (mga_vga_calculate_mode_bandwidth(mode, bpp)
> (30100 * 1024))
return MODE_BANDWIDTH;
} else {
if (mga_vga_calculate_mode_bandwidth(mode, bpp)
> (55000 * 1024))
return MODE_BANDWIDTH;
}
} else if (mdev->type == G200_WB) {
if (mode->hdisplay > 1280)
return MODE_VIRTUAL_X;
if (mode->vdisplay > 1024)
return MODE_VIRTUAL_Y;
if (mga_vga_calculate_mode_bandwidth(mode, bpp) >
(31877 * 1024))
return MODE_BANDWIDTH;
} else if (mdev->type == G200_EV &&
(mga_vga_calculate_mode_bandwidth(mode, bpp)
> (32700 * 1024))) {
return MODE_BANDWIDTH;
} else if (mdev->type == G200_EH &&
(mga_vga_calculate_mode_bandwidth(mode, bpp)
> (37500 * 1024))) {
return MODE_BANDWIDTH;
} else if (mdev->type == G200_ER &&
(mga_vga_calculate_mode_bandwidth(mode,
bpp) > (55000 * 1024))) {
return MODE_BANDWIDTH;
}
if ((mode->hdisplay % 8) != 0 || (mode->hsync_start % 8) != 0 ||
(mode->hsync_end % 8) != 0 || (mode->htotal % 8) != 0) {
return MODE_H_ILLEGAL;
}
if (mode->crtc_hdisplay > 2048 || mode->crtc_hsync_start > 4096 ||
mode->crtc_hsync_end > 4096 || mode->crtc_htotal > 4096 ||
mode->crtc_vdisplay > 2048 || mode->crtc_vsync_start > 4096 ||
mode->crtc_vsync_end > 4096 || mode->crtc_vtotal > 4096) {
return MODE_BAD;
}
/* Validate the mode input by the user */
if (connector->cmdline_mode.specified) {
if (connector->cmdline_mode.bpp_specified)
bpp = connector->cmdline_mode.bpp;
}
if ((mode->hdisplay * mode->vdisplay * (bpp/8)) > mdev->vram_fb_available) {
if (connector->cmdline_mode.specified)
connector->cmdline_mode.specified = false;
return MODE_BAD;
}
return MODE_OK;
}
static void mga_connector_destroy(struct drm_connector *connector)
{
struct mga_connector *mga_connector = to_mga_connector(connector);
mgag200_i2c_destroy(mga_connector->i2c);
drm_connector_cleanup(connector);
}
static const struct drm_connector_helper_funcs mga_vga_connector_helper_funcs = {
.get_modes = mga_vga_get_modes,
.mode_valid = mga_vga_mode_valid,
};
static const struct drm_connector_funcs mga_vga_connector_funcs = {
.reset = drm_atomic_helper_connector_reset,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = mga_connector_destroy,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int mgag200_vga_connector_init(struct mga_device *mdev)
{
struct drm_device *dev = &mdev->base;
struct mga_connector *mconnector = &mdev->connector;
struct drm_connector *connector = &mconnector->base;
struct mga_i2c_chan *i2c;
int ret;
i2c = mgag200_i2c_create(dev);
if (!i2c)
drm_warn(dev, "failed to add DDC bus\n");
ret = drm_connector_init_with_ddc(dev, connector,
&mga_vga_connector_funcs,
DRM_MODE_CONNECTOR_VGA,
&i2c->adapter);
if (ret)
goto err_mgag200_i2c_destroy;
drm_connector_helper_add(connector, &mga_vga_connector_helper_funcs);
mconnector->i2c = i2c;
return 0;
err_mgag200_i2c_destroy:
mgag200_i2c_destroy(i2c);
return ret;
}
/*
* Simple Display Pipe
*/
static enum drm_mode_status
mgag200_simple_display_pipe_mode_valid(struct drm_simple_display_pipe *pipe,
const struct drm_display_mode *mode)
{
return MODE_OK;
}
static void
mgag200_handle_damage(struct mga_device *mdev, struct drm_framebuffer *fb,
struct drm_rect *clip)
{
struct drm_device *dev = &mdev->base;
struct dma_buf_map map;
void *vmap;
int ret;
ret = drm_gem_shmem_vmap(fb->obj[0], &map);
if (drm_WARN_ON(dev, ret))
return; /* BUG: SHMEM BO should always be vmapped */
vmap = map.vaddr; /* TODO: Use mapping abstraction properly */
drm_fb_memcpy_dstclip(mdev->vram, vmap, fb, clip);
drm_gem_shmem_vunmap(fb->obj[0], &map);
/* Always scanout image at VRAM offset 0 */
mgag200_set_startadd(mdev, (u32)0);
mgag200_set_offset(mdev, fb);
}
static void
mgag200_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe,
struct drm_crtc_state *crtc_state,
struct drm_plane_state *plane_state)
{
struct drm_crtc *crtc = &pipe->crtc;
struct drm_device *dev = crtc->dev;
struct mga_device *mdev = to_mga_device(dev);
struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
struct drm_framebuffer *fb = plane_state->fb;
struct drm_rect fullscreen = {
.x1 = 0,
.x2 = fb->width,
.y1 = 0,
.y2 = fb->height,
};
if (mdev->type == G200_WB || mdev->type == G200_EW3)
mgag200_g200wb_hold_bmc(mdev);
mgag200_set_format_regs(mdev, fb);
mgag200_set_mode_regs(mdev, adjusted_mode);
mgag200_crtc_set_plls(mdev, adjusted_mode->clock);
if (mdev->type == G200_ER)
mgag200_g200er_reset_tagfifo(mdev);
if (IS_G200_SE(mdev))
mgag200_g200se_set_hiprilvl(mdev, adjusted_mode, fb);
else if (mdev->type == G200_EV)
mgag200_g200ev_set_hiprilvl(mdev);
if (mdev->type == G200_WB || mdev->type == G200_EW3)
mgag200_g200wb_release_bmc(mdev);
mga_crtc_load_lut(crtc);
mgag200_enable_display(mdev);
mgag200_handle_damage(mdev, fb, &fullscreen);
}
static void
mgag200_simple_display_pipe_disable(struct drm_simple_display_pipe *pipe)
{
struct drm_crtc *crtc = &pipe->crtc;
struct mga_device *mdev = to_mga_device(crtc->dev);
mgag200_disable_display(mdev);
}
static int
mgag200_simple_display_pipe_check(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state,
struct drm_crtc_state *crtc_state)
{
struct drm_plane *plane = plane_state->plane;
struct drm_framebuffer *new_fb = plane_state->fb;
struct drm_framebuffer *fb = NULL;
if (!new_fb)
return 0;
if (plane->state)
fb = plane->state->fb;
if (!fb || (fb->format != new_fb->format))
crtc_state->mode_changed = true; /* update PLL settings */
return 0;
}
static void
mgag200_simple_display_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *old_state)
{
struct drm_plane *plane = &pipe->plane;
struct drm_device *dev = plane->dev;
struct mga_device *mdev = to_mga_device(dev);
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
struct drm_rect damage;
if (!fb)
return;
if (drm_atomic_helper_damage_merged(old_state, state, &damage))
mgag200_handle_damage(mdev, fb, &damage);
}
static const struct drm_simple_display_pipe_funcs
mgag200_simple_display_pipe_funcs = {
.mode_valid = mgag200_simple_display_pipe_mode_valid,
.enable = mgag200_simple_display_pipe_enable,
.disable = mgag200_simple_display_pipe_disable,
.check = mgag200_simple_display_pipe_check,
.update = mgag200_simple_display_pipe_update,
.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
};
static const uint32_t mgag200_simple_display_pipe_formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_RGB565,
DRM_FORMAT_RGB888,
};
static const uint64_t mgag200_simple_display_pipe_fmtmods[] = {
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID
};
/*
* Mode config
*/
static const struct drm_mode_config_funcs mgag200_mode_config_funcs = {
.fb_create = drm_gem_fb_create_with_dirty,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
static unsigned int mgag200_preferred_depth(struct mga_device *mdev)
{
if (IS_G200_SE(mdev) && mdev->vram_fb_available < (2048*1024))
return 16;
else
return 32;
}
int mgag200_modeset_init(struct mga_device *mdev)
{
struct drm_device *dev = &mdev->base;
struct drm_connector *connector = &mdev->connector.base;
struct drm_simple_display_pipe *pipe = &mdev->display_pipe;
size_t format_count = ARRAY_SIZE(mgag200_simple_display_pipe_formats);
int ret;
mdev->bpp_shifts[0] = 0;
mdev->bpp_shifts[1] = 1;
mdev->bpp_shifts[2] = 0;
mdev->bpp_shifts[3] = 2;
mgag200_init_regs(mdev);
ret = drmm_mode_config_init(dev);
if (ret) {
drm_err(dev, "drmm_mode_config_init() failed, error %d\n",
ret);
return ret;
}
dev->mode_config.max_width = MGAG200_MAX_FB_WIDTH;
dev->mode_config.max_height = MGAG200_MAX_FB_HEIGHT;
dev->mode_config.preferred_depth = mgag200_preferred_depth(mdev);
dev->mode_config.fb_base = mdev->mc.vram_base;
dev->mode_config.funcs = &mgag200_mode_config_funcs;
ret = mgag200_vga_connector_init(mdev);
if (ret) {
drm_err(dev,
"mgag200_vga_connector_init() failed, error %d\n",
ret);
return ret;
}
ret = drm_simple_display_pipe_init(dev, pipe,
&mgag200_simple_display_pipe_funcs,
mgag200_simple_display_pipe_formats,
format_count,
mgag200_simple_display_pipe_fmtmods,
connector);
if (ret) {
drm_err(dev,
"drm_simple_display_pipe_init() failed, error %d\n",
ret);
return ret;
}
/* FIXME: legacy gamma tables; convert to CRTC state */
drm_mode_crtc_set_gamma_size(&pipe->crtc, MGAG200_LUT_SIZE);
drm_mode_config_reset(dev);
return 0;
}