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OpenCloudOS-Kernel/drivers/gpu/drm/ast/ast_mode.c

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/*
* Copyright 2012 Red Hat Inc.
* Parts based on xf86-video-ast
* Copyright (c) 2005 ASPEED Technology Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
*/
/*
* Authors: Dave Airlie <airlied@redhat.com>
*/
#include <linux/export.h>
#include <linux/pci.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic_state_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_gem_vram_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_simple_kms_helper.h>
#include "ast_drv.h"
#include "ast_tables.h"
static struct ast_i2c_chan *ast_i2c_create(struct drm_device *dev);
static void ast_i2c_destroy(struct ast_i2c_chan *i2c);
static inline void ast_load_palette_index(struct ast_private *ast,
u8 index, u8 red, u8 green,
u8 blue)
{
ast_io_write8(ast, AST_IO_DAC_INDEX_WRITE, index);
ast_io_read8(ast, AST_IO_SEQ_PORT);
ast_io_write8(ast, AST_IO_DAC_DATA, red);
ast_io_read8(ast, AST_IO_SEQ_PORT);
ast_io_write8(ast, AST_IO_DAC_DATA, green);
ast_io_read8(ast, AST_IO_SEQ_PORT);
ast_io_write8(ast, AST_IO_DAC_DATA, blue);
ast_io_read8(ast, AST_IO_SEQ_PORT);
}
static void ast_crtc_load_lut(struct ast_private *ast, struct drm_crtc *crtc)
{
u16 *r, *g, *b;
int i;
if (!crtc->enabled)
return;
r = crtc->gamma_store;
g = r + crtc->gamma_size;
b = g + crtc->gamma_size;
for (i = 0; i < 256; i++)
ast_load_palette_index(ast, i, *r++ >> 8, *g++ >> 8, *b++ >> 8);
}
static bool ast_get_vbios_mode_info(const struct drm_format_info *format,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
struct ast_vbios_mode_info *vbios_mode)
{
u32 refresh_rate_index = 0, refresh_rate;
const struct ast_vbios_enhtable *best = NULL;
u32 hborder, vborder;
bool check_sync;
switch (format->cpp[0] * 8) {
case 8:
vbios_mode->std_table = &vbios_stdtable[VGAModeIndex];
break;
case 16:
vbios_mode->std_table = &vbios_stdtable[HiCModeIndex];
break;
case 24:
case 32:
vbios_mode->std_table = &vbios_stdtable[TrueCModeIndex];
break;
default:
return false;
}
switch (mode->crtc_hdisplay) {
case 640:
vbios_mode->enh_table = &res_640x480[refresh_rate_index];
break;
case 800:
vbios_mode->enh_table = &res_800x600[refresh_rate_index];
break;
case 1024:
vbios_mode->enh_table = &res_1024x768[refresh_rate_index];
break;
case 1280:
if (mode->crtc_vdisplay == 800)
vbios_mode->enh_table = &res_1280x800[refresh_rate_index];
else
vbios_mode->enh_table = &res_1280x1024[refresh_rate_index];
break;
case 1360:
vbios_mode->enh_table = &res_1360x768[refresh_rate_index];
break;
case 1440:
vbios_mode->enh_table = &res_1440x900[refresh_rate_index];
break;
case 1600:
if (mode->crtc_vdisplay == 900)
vbios_mode->enh_table = &res_1600x900[refresh_rate_index];
else
vbios_mode->enh_table = &res_1600x1200[refresh_rate_index];
break;
case 1680:
vbios_mode->enh_table = &res_1680x1050[refresh_rate_index];
break;
case 1920:
if (mode->crtc_vdisplay == 1080)
vbios_mode->enh_table = &res_1920x1080[refresh_rate_index];
else
vbios_mode->enh_table = &res_1920x1200[refresh_rate_index];
break;
default:
return false;
}
refresh_rate = drm_mode_vrefresh(mode);
check_sync = vbios_mode->enh_table->flags & WideScreenMode;
while (1) {
const struct ast_vbios_enhtable *loop = vbios_mode->enh_table;
while (loop->refresh_rate != 0xff) {
if ((check_sync) &&
(((mode->flags & DRM_MODE_FLAG_NVSYNC) &&
(loop->flags & PVSync)) ||
((mode->flags & DRM_MODE_FLAG_PVSYNC) &&
(loop->flags & NVSync)) ||
((mode->flags & DRM_MODE_FLAG_NHSYNC) &&
(loop->flags & PHSync)) ||
((mode->flags & DRM_MODE_FLAG_PHSYNC) &&
(loop->flags & NHSync)))) {
loop++;
continue;
}
if (loop->refresh_rate <= refresh_rate
&& (!best || loop->refresh_rate > best->refresh_rate))
best = loop;
loop++;
}
if (best || !check_sync)
break;
check_sync = 0;
}
if (best)
vbios_mode->enh_table = best;
hborder = (vbios_mode->enh_table->flags & HBorder) ? 8 : 0;
vborder = (vbios_mode->enh_table->flags & VBorder) ? 8 : 0;
adjusted_mode->crtc_htotal = vbios_mode->enh_table->ht;
adjusted_mode->crtc_hblank_start = vbios_mode->enh_table->hde + hborder;
adjusted_mode->crtc_hblank_end = vbios_mode->enh_table->ht - hborder;
adjusted_mode->crtc_hsync_start = vbios_mode->enh_table->hde + hborder +
vbios_mode->enh_table->hfp;
adjusted_mode->crtc_hsync_end = (vbios_mode->enh_table->hde + hborder +
vbios_mode->enh_table->hfp +
vbios_mode->enh_table->hsync);
adjusted_mode->crtc_vtotal = vbios_mode->enh_table->vt;
adjusted_mode->crtc_vblank_start = vbios_mode->enh_table->vde + vborder;
adjusted_mode->crtc_vblank_end = vbios_mode->enh_table->vt - vborder;
adjusted_mode->crtc_vsync_start = vbios_mode->enh_table->vde + vborder +
vbios_mode->enh_table->vfp;
adjusted_mode->crtc_vsync_end = (vbios_mode->enh_table->vde + vborder +
vbios_mode->enh_table->vfp +
vbios_mode->enh_table->vsync);
return true;
}
static void ast_set_vbios_color_reg(struct ast_private *ast,
const struct drm_format_info *format,
const struct ast_vbios_mode_info *vbios_mode)
{
u32 color_index;
switch (format->cpp[0]) {
case 1:
color_index = VGAModeIndex - 1;
break;
case 2:
color_index = HiCModeIndex;
break;
case 3:
case 4:
color_index = TrueCModeIndex;
break;
default:
return;
}
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8c, (u8)((color_index & 0x0f) << 4));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0x00);
if (vbios_mode->enh_table->flags & NewModeInfo) {
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0xa8);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x92, format->cpp[0] * 8);
}
}
static void ast_set_vbios_mode_reg(struct ast_private *ast,
const struct drm_display_mode *adjusted_mode,
const struct ast_vbios_mode_info *vbios_mode)
{
u32 refresh_rate_index, mode_id;
refresh_rate_index = vbios_mode->enh_table->refresh_rate_index;
mode_id = vbios_mode->enh_table->mode_id;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8d, refresh_rate_index & 0xff);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8e, mode_id & 0xff);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0x00);
if (vbios_mode->enh_table->flags & NewModeInfo) {
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0xa8);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x93, adjusted_mode->clock / 1000);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x94, adjusted_mode->crtc_hdisplay);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x95, adjusted_mode->crtc_hdisplay >> 8);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x96, adjusted_mode->crtc_vdisplay);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x97, adjusted_mode->crtc_vdisplay >> 8);
}
}
static void ast_set_std_reg(struct ast_private *ast,
struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
const struct ast_vbios_stdtable *stdtable;
u32 i;
u8 jreg;
stdtable = vbios_mode->std_table;
jreg = stdtable->misc;
ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, jreg);
/* Set SEQ; except Screen Disable field */
ast_set_index_reg(ast, AST_IO_SEQ_PORT, 0x00, 0x03);
ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x01, 0xdf, stdtable->seq[0]);
for (i = 1; i < 4; i++) {
jreg = stdtable->seq[i];
ast_set_index_reg(ast, AST_IO_SEQ_PORT, (i + 1) , jreg);
}
/* Set CRTC; except base address and offset */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x00);
for (i = 0; i < 12; i++)
ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, stdtable->crtc[i]);
for (i = 14; i < 19; i++)
ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, stdtable->crtc[i]);
for (i = 20; i < 25; i++)
ast_set_index_reg(ast, AST_IO_CRTC_PORT, i, stdtable->crtc[i]);
/* set AR */
jreg = ast_io_read8(ast, AST_IO_INPUT_STATUS1_READ);
for (i = 0; i < 20; i++) {
jreg = stdtable->ar[i];
ast_io_write8(ast, AST_IO_AR_PORT_WRITE, (u8)i);
ast_io_write8(ast, AST_IO_AR_PORT_WRITE, jreg);
}
ast_io_write8(ast, AST_IO_AR_PORT_WRITE, 0x14);
ast_io_write8(ast, AST_IO_AR_PORT_WRITE, 0x00);
jreg = ast_io_read8(ast, AST_IO_INPUT_STATUS1_READ);
ast_io_write8(ast, AST_IO_AR_PORT_WRITE, 0x20);
/* Set GR */
for (i = 0; i < 9; i++)
ast_set_index_reg(ast, AST_IO_GR_PORT, i, stdtable->gr[i]);
}
static void ast_set_crtc_reg(struct ast_private *ast,
struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
u8 jreg05 = 0, jreg07 = 0, jreg09 = 0, jregAC = 0, jregAD = 0, jregAE = 0;
u16 temp, precache = 0;
if ((ast->chip == AST2500) &&
(vbios_mode->enh_table->flags & AST2500PreCatchCRT))
precache = 40;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x00);
temp = (mode->crtc_htotal >> 3) - 5;
if (temp & 0x100)
jregAC |= 0x01; /* HT D[8] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x00, 0x00, temp);
temp = (mode->crtc_hdisplay >> 3) - 1;
if (temp & 0x100)
jregAC |= 0x04; /* HDE D[8] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x01, 0x00, temp);
temp = (mode->crtc_hblank_start >> 3) - 1;
if (temp & 0x100)
jregAC |= 0x10; /* HBS D[8] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x02, 0x00, temp);
temp = ((mode->crtc_hblank_end >> 3) - 1) & 0x7f;
if (temp & 0x20)
jreg05 |= 0x80; /* HBE D[5] */
if (temp & 0x40)
jregAD |= 0x01; /* HBE D[5] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x03, 0xE0, (temp & 0x1f));
temp = ((mode->crtc_hsync_start-precache) >> 3) - 1;
if (temp & 0x100)
jregAC |= 0x40; /* HRS D[5] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x04, 0x00, temp);
temp = (((mode->crtc_hsync_end-precache) >> 3) - 1) & 0x3f;
if (temp & 0x20)
jregAD |= 0x04; /* HRE D[5] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x05, 0x60, (u8)((temp & 0x1f) | jreg05));
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAC, 0x00, jregAC);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAD, 0x00, jregAD);
/* vert timings */
temp = (mode->crtc_vtotal) - 2;
if (temp & 0x100)
jreg07 |= 0x01;
if (temp & 0x200)
jreg07 |= 0x20;
if (temp & 0x400)
jregAE |= 0x01;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x06, 0x00, temp);
temp = (mode->crtc_vsync_start) - 1;
if (temp & 0x100)
jreg07 |= 0x04;
if (temp & 0x200)
jreg07 |= 0x80;
if (temp & 0x400)
jregAE |= 0x08;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x10, 0x00, temp);
temp = (mode->crtc_vsync_end - 1) & 0x3f;
if (temp & 0x10)
jregAE |= 0x20;
if (temp & 0x20)
jregAE |= 0x40;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x70, temp & 0xf);
temp = mode->crtc_vdisplay - 1;
if (temp & 0x100)
jreg07 |= 0x02;
if (temp & 0x200)
jreg07 |= 0x40;
if (temp & 0x400)
jregAE |= 0x02;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x12, 0x00, temp);
temp = mode->crtc_vblank_start - 1;
if (temp & 0x100)
jreg07 |= 0x08;
if (temp & 0x200)
jreg09 |= 0x20;
if (temp & 0x400)
jregAE |= 0x04;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x15, 0x00, temp);
temp = mode->crtc_vblank_end - 1;
if (temp & 0x100)
jregAE |= 0x10;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x16, 0x00, temp);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x07, 0x00, jreg07);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x09, 0xdf, jreg09);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAE, 0x00, (jregAE | 0x80));
if (precache)
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0x3f, 0x80);
else
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0x3f, 0x00);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x80);
}
static void ast_set_offset_reg(struct ast_private *ast,
struct drm_framebuffer *fb)
{
u16 offset;
offset = fb->pitches[0] >> 3;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x13, (offset & 0xff));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xb0, (offset >> 8) & 0x3f);
}
static void ast_set_dclk_reg(struct ast_private *ast,
struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
const struct ast_vbios_dclk_info *clk_info;
if (ast->chip == AST2500)
clk_info = &dclk_table_ast2500[vbios_mode->enh_table->dclk_index];
else
clk_info = &dclk_table[vbios_mode->enh_table->dclk_index];
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xc0, 0x00, clk_info->param1);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xc1, 0x00, clk_info->param2);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xbb, 0x0f,
(clk_info->param3 & 0xc0) |
((clk_info->param3 & 0x3) << 4));
}
static void ast_set_color_reg(struct ast_private *ast,
const struct drm_format_info *format)
{
u8 jregA0 = 0, jregA3 = 0, jregA8 = 0;
switch (format->cpp[0] * 8) {
case 8:
jregA0 = 0x70;
jregA3 = 0x01;
jregA8 = 0x00;
break;
case 15:
case 16:
jregA0 = 0x70;
jregA3 = 0x04;
jregA8 = 0x02;
break;
case 32:
jregA0 = 0x70;
jregA3 = 0x08;
jregA8 = 0x02;
break;
}
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa0, 0x8f, jregA0);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xf0, jregA3);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa8, 0xfd, jregA8);
}
static void ast_set_crtthd_reg(struct ast_private *ast)
{
/* Set Threshold */
if (ast->chip == AST2300 || ast->chip == AST2400 ||
ast->chip == AST2500) {
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x78);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x60);
} else if (ast->chip == AST2100 ||
ast->chip == AST1100 ||
ast->chip == AST2200 ||
ast->chip == AST2150) {
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x3f);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x2f);
} else {
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x2f);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x1f);
}
}
static void ast_set_sync_reg(struct ast_private *ast,
struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
u8 jreg;
jreg = ast_io_read8(ast, AST_IO_MISC_PORT_READ);
jreg &= ~0xC0;
if (vbios_mode->enh_table->flags & NVSync) jreg |= 0x80;
if (vbios_mode->enh_table->flags & NHSync) jreg |= 0x40;
ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, jreg);
}
static void ast_set_start_address_crt1(struct ast_private *ast,
unsigned offset)
{
u32 addr;
addr = offset >> 2;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x0d, (u8)(addr & 0xff));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x0c, (u8)((addr >> 8) & 0xff));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xaf, (u8)((addr >> 16) & 0xff));
}
static void ast_wait_for_vretrace(struct ast_private *ast)
{
unsigned long timeout = jiffies + HZ;
u8 vgair1;
do {
vgair1 = ast_io_read8(ast, AST_IO_INPUT_STATUS1_READ);
} while (!(vgair1 & AST_IO_VGAIR1_VREFRESH) && time_before(jiffies, timeout));
}
/*
* Primary plane
*/
static const uint32_t ast_primary_plane_formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_RGB565,
DRM_FORMAT_C8,
};
static int ast_primary_plane_helper_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
plane);
struct drm_crtc_state *crtc_state;
struct ast_crtc_state *ast_crtc_state;
int ret;
if (!new_plane_state->crtc)
return 0;
crtc_state = drm_atomic_get_new_crtc_state(state,
new_plane_state->crtc);
ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
false, true);
if (ret)
return ret;
if (!new_plane_state->visible)
return 0;
ast_crtc_state = to_ast_crtc_state(crtc_state);
ast_crtc_state->format = new_plane_state->fb->format;
return 0;
}
static void
ast_primary_plane_helper_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
plane);
struct drm_device *dev = plane->dev;
struct ast_private *ast = to_ast_private(dev);
struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
plane);
struct drm_gem_vram_object *gbo;
s64 gpu_addr;
struct drm_framebuffer *fb = new_state->fb;
struct drm_framebuffer *old_fb = old_state->fb;
if (!old_fb || (fb->format != old_fb->format)) {
struct drm_crtc_state *crtc_state = new_state->crtc->state;
struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
struct ast_vbios_mode_info *vbios_mode_info = &ast_crtc_state->vbios_mode_info;
ast_set_color_reg(ast, fb->format);
ast_set_vbios_color_reg(ast, fb->format, vbios_mode_info);
}
gbo = drm_gem_vram_of_gem(fb->obj[0]);
gpu_addr = drm_gem_vram_offset(gbo);
if (drm_WARN_ON_ONCE(dev, gpu_addr < 0))
return; /* Bug: we didn't pin the BO to VRAM in prepare_fb. */
ast_set_offset_reg(ast, fb);
ast_set_start_address_crt1(ast, (u32)gpu_addr);
ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0x00);
}
static void
ast_primary_plane_helper_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct ast_private *ast = to_ast_private(plane->dev);
ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0x20);
}
static const struct drm_plane_helper_funcs ast_primary_plane_helper_funcs = {
DRM_GEM_VRAM_PLANE_HELPER_FUNCS,
.atomic_check = ast_primary_plane_helper_atomic_check,
.atomic_update = ast_primary_plane_helper_atomic_update,
.atomic_disable = ast_primary_plane_helper_atomic_disable,
};
static const struct drm_plane_funcs ast_primary_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = drm_plane_cleanup,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static int ast_primary_plane_init(struct ast_private *ast)
{
struct drm_device *dev = &ast->base;
struct drm_plane *primary_plane = &ast->primary_plane;
int ret;
ret = drm_universal_plane_init(dev, primary_plane, 0x01,
&ast_primary_plane_funcs,
ast_primary_plane_formats,
ARRAY_SIZE(ast_primary_plane_formats),
NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
if (ret) {
drm_err(dev, "drm_universal_plane_init() failed: %d\n", ret);
return ret;
}
drm_plane_helper_add(primary_plane, &ast_primary_plane_helper_funcs);
return 0;
}
/*
* Cursor plane
*/
static void ast_update_cursor_image(u8 __iomem *dst, const u8 *src, int width, int height)
{
union {
u32 ul;
u8 b[4];
} srcdata32[2], data32;
union {
u16 us;
u8 b[2];
} data16;
u32 csum = 0;
s32 alpha_dst_delta, last_alpha_dst_delta;
u8 __iomem *dstxor;
const u8 *srcxor;
int i, j;
u32 per_pixel_copy, two_pixel_copy;
alpha_dst_delta = AST_MAX_HWC_WIDTH << 1;
last_alpha_dst_delta = alpha_dst_delta - (width << 1);
srcxor = src;
dstxor = (u8 *)dst + last_alpha_dst_delta + (AST_MAX_HWC_HEIGHT - height) * alpha_dst_delta;
per_pixel_copy = width & 1;
two_pixel_copy = width >> 1;
for (j = 0; j < height; j++) {
for (i = 0; i < two_pixel_copy; i++) {
srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
srcdata32[1].ul = *((u32 *)(srcxor + 4)) & 0xf0f0f0f0;
data32.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
data32.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
data32.b[2] = srcdata32[1].b[1] | (srcdata32[1].b[0] >> 4);
data32.b[3] = srcdata32[1].b[3] | (srcdata32[1].b[2] >> 4);
writel(data32.ul, dstxor);
csum += data32.ul;
dstxor += 4;
srcxor += 8;
}
for (i = 0; i < per_pixel_copy; i++) {
srcdata32[0].ul = *((u32 *)srcxor) & 0xf0f0f0f0;
data16.b[0] = srcdata32[0].b[1] | (srcdata32[0].b[0] >> 4);
data16.b[1] = srcdata32[0].b[3] | (srcdata32[0].b[2] >> 4);
writew(data16.us, dstxor);
csum += (u32)data16.us;
dstxor += 2;
srcxor += 4;
}
dstxor += last_alpha_dst_delta;
}
/* write checksum + signature */
dst += AST_HWC_SIZE;
writel(csum, dst);
writel(width, dst + AST_HWC_SIGNATURE_SizeX);
writel(height, dst + AST_HWC_SIGNATURE_SizeY);
writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTX);
writel(0, dst + AST_HWC_SIGNATURE_HOTSPOTY);
}
static void ast_set_cursor_base(struct ast_private *ast, u64 address)
{
u8 addr0 = (address >> 3) & 0xff;
u8 addr1 = (address >> 11) & 0xff;
u8 addr2 = (address >> 19) & 0xff;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc8, addr0);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc9, addr1);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xca, addr2);
}
static void ast_set_cursor_location(struct ast_private *ast, u16 x, u16 y,
u8 x_offset, u8 y_offset)
{
u8 x0 = (x & 0x00ff);
u8 x1 = (x & 0x0f00) >> 8;
u8 y0 = (y & 0x00ff);
u8 y1 = (y & 0x0700) >> 8;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc2, x_offset);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc3, y_offset);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc4, x0);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, x1);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, y0);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, y1);
}
static void ast_set_cursor_enabled(struct ast_private *ast, bool enabled)
{
static const u8 mask = (u8)~(AST_IO_VGACRCB_HWC_16BPP |
AST_IO_VGACRCB_HWC_ENABLED);
u8 vgacrcb = AST_IO_VGACRCB_HWC_16BPP;
if (enabled)
vgacrcb |= AST_IO_VGACRCB_HWC_ENABLED;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, mask, vgacrcb);
}
static const uint32_t ast_cursor_plane_formats[] = {
DRM_FORMAT_ARGB8888,
};
static int ast_cursor_plane_helper_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
plane);
struct drm_framebuffer *fb = new_plane_state->fb;
struct drm_crtc_state *crtc_state;
int ret;
if (!new_plane_state->crtc)
return 0;
crtc_state = drm_atomic_get_new_crtc_state(state,
new_plane_state->crtc);
ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
true, true);
if (ret)
return ret;
if (!new_plane_state->visible)
return 0;
if (fb->width > AST_MAX_HWC_WIDTH || fb->height > AST_MAX_HWC_HEIGHT)
return -EINVAL;
return 0;
}
static void
ast_cursor_plane_helper_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct ast_cursor_plane *ast_cursor_plane = to_ast_cursor_plane(plane);
struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
plane);
struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
plane);
struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(new_state);
struct drm_framebuffer *fb = new_state->fb;
struct ast_private *ast = to_ast_private(plane->dev);
struct dma_buf_map dst_map =
ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].map;
u64 dst_off =
ast_cursor_plane->hwc[ast_cursor_plane->next_hwc_index].off;
struct dma_buf_map src_map = shadow_plane_state->map[0];
unsigned int offset_x, offset_y;
u16 x, y;
u8 x_offset, y_offset;
u8 __iomem *dst;
u8 __iomem *sig;
const u8 *src;
src = src_map.vaddr; /* TODO: Use mapping abstraction properly */
dst = dst_map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
sig = dst + AST_HWC_SIZE; /* TODO: Use mapping abstraction properly */
/*
* Do data transfer to HW cursor BO. If a new cursor image was installed,
* point the scanout engine to dst_gbo's offset and page-flip the HWC buffers.
*/
ast_update_cursor_image(dst, src, fb->width, fb->height);
if (new_state->fb != old_state->fb) {
ast_set_cursor_base(ast, dst_off);
++ast_cursor_plane->next_hwc_index;
ast_cursor_plane->next_hwc_index %= ARRAY_SIZE(ast_cursor_plane->hwc);
}
/*
* Update location in HWC signature and registers.
*/
writel(new_state->crtc_x, sig + AST_HWC_SIGNATURE_X);
writel(new_state->crtc_y, sig + AST_HWC_SIGNATURE_Y);
offset_x = AST_MAX_HWC_WIDTH - fb->width;
offset_y = AST_MAX_HWC_HEIGHT - fb->height;
if (new_state->crtc_x < 0) {
x_offset = (-new_state->crtc_x) + offset_x;
x = 0;
} else {
x_offset = offset_x;
x = new_state->crtc_x;
}
if (new_state->crtc_y < 0) {
y_offset = (-new_state->crtc_y) + offset_y;
y = 0;
} else {
y_offset = offset_y;
y = new_state->crtc_y;
}
ast_set_cursor_location(ast, x, y, x_offset, y_offset);
/* Dummy write to enable HWC and make the HW pick-up the changes. */
ast_set_cursor_enabled(ast, true);
}
static void
ast_cursor_plane_helper_atomic_disable(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct ast_private *ast = to_ast_private(plane->dev);
ast_set_cursor_enabled(ast, false);
}
static const struct drm_plane_helper_funcs ast_cursor_plane_helper_funcs = {
DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
.atomic_check = ast_cursor_plane_helper_atomic_check,
.atomic_update = ast_cursor_plane_helper_atomic_update,
.atomic_disable = ast_cursor_plane_helper_atomic_disable,
};
static void ast_cursor_plane_destroy(struct drm_plane *plane)
{
struct ast_cursor_plane *ast_cursor_plane = to_ast_cursor_plane(plane);
size_t i;
struct drm_gem_vram_object *gbo;
struct dma_buf_map map;
for (i = 0; i < ARRAY_SIZE(ast_cursor_plane->hwc); ++i) {
gbo = ast_cursor_plane->hwc[i].gbo;
map = ast_cursor_plane->hwc[i].map;
drm_gem_vram_vunmap(gbo, &map);
drm_gem_vram_unpin(gbo);
drm_gem_vram_put(gbo);
}
drm_plane_cleanup(plane);
}
static const struct drm_plane_funcs ast_cursor_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = ast_cursor_plane_destroy,
DRM_GEM_SHADOW_PLANE_FUNCS,
};
static int ast_cursor_plane_init(struct ast_private *ast)
{
struct drm_device *dev = &ast->base;
struct ast_cursor_plane *ast_cursor_plane = &ast->cursor_plane;
struct drm_plane *cursor_plane = &ast_cursor_plane->base;
size_t size, i;
struct drm_gem_vram_object *gbo;
struct dma_buf_map map;
int ret;
s64 off;
/*
* Allocate backing storage for cursors. The BOs are permanently
* pinned to the top end of the VRAM.
*/
size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
for (i = 0; i < ARRAY_SIZE(ast_cursor_plane->hwc); ++i) {
gbo = drm_gem_vram_create(dev, size, 0);
if (IS_ERR(gbo)) {
ret = PTR_ERR(gbo);
goto err_hwc;
}
ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM |
DRM_GEM_VRAM_PL_FLAG_TOPDOWN);
if (ret)
goto err_drm_gem_vram_put;
ret = drm_gem_vram_vmap(gbo, &map);
if (ret)
goto err_drm_gem_vram_unpin;
off = drm_gem_vram_offset(gbo);
if (off < 0) {
ret = off;
goto err_drm_gem_vram_vunmap;
}
ast_cursor_plane->hwc[i].gbo = gbo;
ast_cursor_plane->hwc[i].map = map;
ast_cursor_plane->hwc[i].off = off;
}
/*
* Create the cursor plane. The plane's destroy callback will release
* the backing storages' BO memory.
*/
ret = drm_universal_plane_init(dev, cursor_plane, 0x01,
&ast_cursor_plane_funcs,
ast_cursor_plane_formats,
ARRAY_SIZE(ast_cursor_plane_formats),
NULL, DRM_PLANE_TYPE_CURSOR, NULL);
if (ret) {
drm_err(dev, "drm_universal_plane failed(): %d\n", ret);
goto err_hwc;
}
drm_plane_helper_add(cursor_plane, &ast_cursor_plane_helper_funcs);
return 0;
err_hwc:
while (i) {
--i;
gbo = ast_cursor_plane->hwc[i].gbo;
map = ast_cursor_plane->hwc[i].map;
err_drm_gem_vram_vunmap:
drm_gem_vram_vunmap(gbo, &map);
err_drm_gem_vram_unpin:
drm_gem_vram_unpin(gbo);
err_drm_gem_vram_put:
drm_gem_vram_put(gbo);
}
return ret;
}
/*
* CRTC
*/
static void ast_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct ast_private *ast = to_ast_private(crtc->dev);
/* TODO: Maybe control display signal generation with
* Sync Enable (bit CR17.7).
*/
switch (mode) {
case DRM_MODE_DPMS_ON:
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
if (ast->tx_chip_type == AST_TX_DP501)
ast_set_dp501_video_output(crtc->dev, 1);
break;
case DRM_MODE_DPMS_OFF:
if (ast->tx_chip_type == AST_TX_DP501)
ast_set_dp501_video_output(crtc->dev, 0);
break;
}
}
static int ast_crtc_helper_atomic_check(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
crtc);
struct drm_device *dev = crtc->dev;
struct ast_crtc_state *ast_state;
const struct drm_format_info *format;
bool succ;
if (!crtc_state->enable)
return 0; /* no mode checks if CRTC is being disabled */
ast_state = to_ast_crtc_state(crtc_state);
format = ast_state->format;
if (drm_WARN_ON_ONCE(dev, !format))
return -EINVAL; /* BUG: We didn't set format in primary check(). */
succ = ast_get_vbios_mode_info(format, &crtc_state->mode,
&crtc_state->adjusted_mode,
&ast_state->vbios_mode_info);
if (!succ)
return -EINVAL;
return 0;
}
static void
ast_crtc_helper_atomic_flush(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
crtc);
struct drm_crtc_state *old_crtc_state = drm_atomic_get_old_crtc_state(state,
crtc);
struct ast_private *ast = to_ast_private(crtc->dev);
struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
struct ast_crtc_state *old_ast_crtc_state = to_ast_crtc_state(old_crtc_state);
/*
* The gamma LUT has to be reloaded after changing the primary
* plane's color format.
*/
if (old_ast_crtc_state->format != ast_crtc_state->format)
ast_crtc_load_lut(ast, crtc);
}
static void
ast_crtc_helper_atomic_enable(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_device *dev = crtc->dev;
struct ast_private *ast = to_ast_private(dev);
struct drm_crtc_state *crtc_state = crtc->state;
struct ast_crtc_state *ast_crtc_state = to_ast_crtc_state(crtc_state);
struct ast_vbios_mode_info *vbios_mode_info =
&ast_crtc_state->vbios_mode_info;
struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode;
ast_set_vbios_mode_reg(ast, adjusted_mode, vbios_mode_info);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06);
ast_set_std_reg(ast, adjusted_mode, vbios_mode_info);
ast_set_crtc_reg(ast, adjusted_mode, vbios_mode_info);
ast_set_dclk_reg(ast, adjusted_mode, vbios_mode_info);
ast_set_crtthd_reg(ast);
ast_set_sync_reg(ast, adjusted_mode, vbios_mode_info);
ast_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
}
static void
ast_crtc_helper_atomic_disable(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_crtc_state *old_crtc_state = drm_atomic_get_old_crtc_state(state,
crtc);
struct drm_device *dev = crtc->dev;
struct ast_private *ast = to_ast_private(dev);
ast_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
/*
* HW cursors require the underlying primary plane and CRTC to
* display a valid mode and image. This is not the case during
* full modeset operations. So we temporarily disable any active
* plane, including the HW cursor. Each plane's atomic_update()
* helper will re-enable it if necessary.
*
* We only do this during *full* modesets. It does not affect
* simple pageflips on the planes.
*/
drm_atomic_helper_disable_planes_on_crtc(old_crtc_state, false);
/*
* Ensure that no scanout takes place before reprogramming mode
* and format registers.
*/
ast_wait_for_vretrace(ast);
}
static const struct drm_crtc_helper_funcs ast_crtc_helper_funcs = {
.atomic_check = ast_crtc_helper_atomic_check,
.atomic_flush = ast_crtc_helper_atomic_flush,
.atomic_enable = ast_crtc_helper_atomic_enable,
.atomic_disable = ast_crtc_helper_atomic_disable,
};
static void ast_crtc_reset(struct drm_crtc *crtc)
{
struct ast_crtc_state *ast_state =
kzalloc(sizeof(*ast_state), GFP_KERNEL);
if (crtc->state)
crtc->funcs->atomic_destroy_state(crtc, crtc->state);
__drm_atomic_helper_crtc_reset(crtc, &ast_state->base);
}
static struct drm_crtc_state *
ast_crtc_atomic_duplicate_state(struct drm_crtc *crtc)
{
struct ast_crtc_state *new_ast_state, *ast_state;
struct drm_device *dev = crtc->dev;
if (drm_WARN_ON(dev, !crtc->state))
return NULL;
new_ast_state = kmalloc(sizeof(*new_ast_state), GFP_KERNEL);
if (!new_ast_state)
return NULL;
__drm_atomic_helper_crtc_duplicate_state(crtc, &new_ast_state->base);
ast_state = to_ast_crtc_state(crtc->state);
new_ast_state->format = ast_state->format;
memcpy(&new_ast_state->vbios_mode_info, &ast_state->vbios_mode_info,
sizeof(new_ast_state->vbios_mode_info));
return &new_ast_state->base;
}
static void ast_crtc_atomic_destroy_state(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
struct ast_crtc_state *ast_state = to_ast_crtc_state(state);
__drm_atomic_helper_crtc_destroy_state(&ast_state->base);
kfree(ast_state);
}
static const struct drm_crtc_funcs ast_crtc_funcs = {
.reset = ast_crtc_reset,
.destroy = drm_crtc_cleanup,
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.atomic_duplicate_state = ast_crtc_atomic_duplicate_state,
.atomic_destroy_state = ast_crtc_atomic_destroy_state,
};
static int ast_crtc_init(struct drm_device *dev)
{
struct ast_private *ast = to_ast_private(dev);
struct drm_crtc *crtc = &ast->crtc;
int ret;
ret = drm_crtc_init_with_planes(dev, crtc, &ast->primary_plane,
&ast->cursor_plane.base, &ast_crtc_funcs,
NULL);
if (ret)
return ret;
drm_mode_crtc_set_gamma_size(crtc, 256);
drm_crtc_helper_add(crtc, &ast_crtc_helper_funcs);
return 0;
}
/*
* Encoder
*/
static int ast_encoder_init(struct drm_device *dev)
{
struct ast_private *ast = to_ast_private(dev);
struct drm_encoder *encoder = &ast->encoder;
int ret;
ret = drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_DAC);
if (ret)
return ret;
encoder->possible_crtcs = 1;
return 0;
}
/*
* Connector
*/
static int ast_get_modes(struct drm_connector *connector)
{
struct ast_connector *ast_connector = to_ast_connector(connector);
struct ast_private *ast = to_ast_private(connector->dev);
struct edid *edid;
int ret;
bool flags = false;
if (ast->tx_chip_type == AST_TX_DP501) {
ast->dp501_maxclk = 0xff;
edid = kmalloc(128, GFP_KERNEL);
if (!edid)
return -ENOMEM;
flags = ast_dp501_read_edid(connector->dev, (u8 *)edid);
if (flags)
ast->dp501_maxclk = ast_get_dp501_max_clk(connector->dev);
else
kfree(edid);
}
if (!flags)
edid = drm_get_edid(connector, &ast_connector->i2c->adapter);
if (edid) {
drm_connector_update_edid_property(&ast_connector->base, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
return ret;
} else
drm_connector_update_edid_property(&ast_connector->base, NULL);
return 0;
}
static enum drm_mode_status ast_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct ast_private *ast = to_ast_private(connector->dev);
int flags = MODE_NOMODE;
uint32_t jtemp;
if (ast->support_wide_screen) {
if ((mode->hdisplay == 1680) && (mode->vdisplay == 1050))
return MODE_OK;
if ((mode->hdisplay == 1280) && (mode->vdisplay == 800))
return MODE_OK;
if ((mode->hdisplay == 1440) && (mode->vdisplay == 900))
return MODE_OK;
if ((mode->hdisplay == 1360) && (mode->vdisplay == 768))
return MODE_OK;
if ((mode->hdisplay == 1600) && (mode->vdisplay == 900))
return MODE_OK;
if ((ast->chip == AST2100) || (ast->chip == AST2200) ||
(ast->chip == AST2300) || (ast->chip == AST2400) ||
(ast->chip == AST2500)) {
if ((mode->hdisplay == 1920) && (mode->vdisplay == 1080))
return MODE_OK;
if ((mode->hdisplay == 1920) && (mode->vdisplay == 1200)) {
jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
if (jtemp & 0x01)
return MODE_NOMODE;
else
return MODE_OK;
}
}
}
switch (mode->hdisplay) {
case 640:
if (mode->vdisplay == 480) flags = MODE_OK;
break;
case 800:
if (mode->vdisplay == 600) flags = MODE_OK;
break;
case 1024:
if (mode->vdisplay == 768) flags = MODE_OK;
break;
case 1280:
if (mode->vdisplay == 1024) flags = MODE_OK;
break;
case 1600:
if (mode->vdisplay == 1200) flags = MODE_OK;
break;
default:
return flags;
}
return flags;
}
static enum drm_connector_status ast_connector_detect(struct drm_connector
*connector, bool force)
{
int r;
r = ast_get_modes(connector);
if (r < 0)
return connector_status_disconnected;
return connector_status_connected;
}
static void ast_connector_destroy(struct drm_connector *connector)
{
struct ast_connector *ast_connector = to_ast_connector(connector);
ast_i2c_destroy(ast_connector->i2c);
drm_connector_cleanup(connector);
}
static const struct drm_connector_helper_funcs ast_connector_helper_funcs = {
.get_modes = ast_get_modes,
.mode_valid = ast_mode_valid,
};
static const struct drm_connector_funcs ast_connector_funcs = {
.reset = drm_atomic_helper_connector_reset,
.detect = ast_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = ast_connector_destroy,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int ast_connector_init(struct drm_device *dev)
{
struct ast_private *ast = to_ast_private(dev);
struct ast_connector *ast_connector = &ast->connector;
struct drm_connector *connector = &ast_connector->base;
struct drm_encoder *encoder = &ast->encoder;
ast_connector->i2c = ast_i2c_create(dev);
if (!ast_connector->i2c)
drm_err(dev, "failed to add ddc bus for connector\n");
drm_connector_init_with_ddc(dev, connector,
&ast_connector_funcs,
DRM_MODE_CONNECTOR_VGA,
&ast_connector->i2c->adapter);
drm_connector_helper_add(connector, &ast_connector_helper_funcs);
connector->interlace_allowed = 0;
connector->doublescan_allowed = 0;
connector->polled = DRM_CONNECTOR_POLL_CONNECT |
DRM_CONNECTOR_POLL_DISCONNECT;
drm_connector_attach_encoder(connector, encoder);
return 0;
}
/*
* Mode config
*/
static const struct drm_mode_config_helper_funcs
ast_mode_config_helper_funcs = {
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
};
static const struct drm_mode_config_funcs ast_mode_config_funcs = {
.fb_create = drm_gem_fb_create,
.mode_valid = drm_vram_helper_mode_valid,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};
int ast_mode_config_init(struct ast_private *ast)
{
struct drm_device *dev = &ast->base;
struct pci_dev *pdev = to_pci_dev(dev->dev);
int ret;
ret = drmm_mode_config_init(dev);
if (ret)
return ret;
dev->mode_config.funcs = &ast_mode_config_funcs;
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.preferred_depth = 24;
dev->mode_config.prefer_shadow = 1;
dev->mode_config.fb_base = pci_resource_start(pdev, 0);
if (ast->chip == AST2100 ||
ast->chip == AST2200 ||
ast->chip == AST2300 ||
ast->chip == AST2400 ||
ast->chip == AST2500) {
dev->mode_config.max_width = 1920;
dev->mode_config.max_height = 2048;
} else {
dev->mode_config.max_width = 1600;
dev->mode_config.max_height = 1200;
}
dev->mode_config.helper_private = &ast_mode_config_helper_funcs;
ret = ast_primary_plane_init(ast);
if (ret)
return ret;
ret = ast_cursor_plane_init(ast);
if (ret)
return ret;
ast_crtc_init(dev);
ast_encoder_init(dev);
ast_connector_init(dev);
drm_mode_config_reset(dev);
drm_kms_helper_poll_init(dev);
return 0;
}
static int get_clock(void *i2c_priv)
{
struct ast_i2c_chan *i2c = i2c_priv;
struct ast_private *ast = to_ast_private(i2c->dev);
uint32_t val, val2, count, pass;
count = 0;
pass = 0;
val = (ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x10) >> 4) & 0x01;
do {
val2 = (ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x10) >> 4) & 0x01;
if (val == val2) {
pass++;
} else {
pass = 0;
val = (ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x10) >> 4) & 0x01;
}
} while ((pass < 5) && (count++ < 0x10000));
return val & 1 ? 1 : 0;
}
static int get_data(void *i2c_priv)
{
struct ast_i2c_chan *i2c = i2c_priv;
struct ast_private *ast = to_ast_private(i2c->dev);
uint32_t val, val2, count, pass;
count = 0;
pass = 0;
val = (ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x20) >> 5) & 0x01;
do {
val2 = (ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x20) >> 5) & 0x01;
if (val == val2) {
pass++;
} else {
pass = 0;
val = (ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x20) >> 5) & 0x01;
}
} while ((pass < 5) && (count++ < 0x10000));
return val & 1 ? 1 : 0;
}
static void set_clock(void *i2c_priv, int clock)
{
struct ast_i2c_chan *i2c = i2c_priv;
struct ast_private *ast = to_ast_private(i2c->dev);
int i;
u8 ujcrb7, jtemp;
for (i = 0; i < 0x10000; i++) {
ujcrb7 = ((clock & 0x01) ? 0 : 1);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0xf4, ujcrb7);
jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x01);
if (ujcrb7 == jtemp)
break;
}
}
static void set_data(void *i2c_priv, int data)
{
struct ast_i2c_chan *i2c = i2c_priv;
struct ast_private *ast = to_ast_private(i2c->dev);
int i;
u8 ujcrb7, jtemp;
for (i = 0; i < 0x10000; i++) {
ujcrb7 = ((data & 0x01) ? 0 : 1) << 2;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0xf1, ujcrb7);
jtemp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x04);
if (ujcrb7 == jtemp)
break;
}
}
static struct ast_i2c_chan *ast_i2c_create(struct drm_device *dev)
{
struct ast_i2c_chan *i2c;
int ret;
i2c = kzalloc(sizeof(struct ast_i2c_chan), GFP_KERNEL);
if (!i2c)
return NULL;
i2c->adapter.owner = THIS_MODULE;
i2c->adapter.class = I2C_CLASS_DDC;
i2c->adapter.dev.parent = dev->dev;
i2c->dev = dev;
i2c_set_adapdata(&i2c->adapter, i2c);
snprintf(i2c->adapter.name, sizeof(i2c->adapter.name),
"AST i2c bit bus");
i2c->adapter.algo_data = &i2c->bit;
i2c->bit.udelay = 20;
i2c->bit.timeout = 2;
i2c->bit.data = i2c;
i2c->bit.setsda = set_data;
i2c->bit.setscl = set_clock;
i2c->bit.getsda = get_data;
i2c->bit.getscl = get_clock;
ret = i2c_bit_add_bus(&i2c->adapter);
if (ret) {
drm_err(dev, "Failed to register bit i2c\n");
goto out_free;
}
return i2c;
out_free:
kfree(i2c);
return NULL;
}
static void ast_i2c_destroy(struct ast_i2c_chan *i2c)
{
if (!i2c)
return;
i2c_del_adapter(&i2c->adapter);
kfree(i2c);
}
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