- 根目录:
- drivers
- gpu
- drm
- ast
- ast_mode.c
/*
* 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 <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_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 int ast_cursor_set(struct drm_crtc *crtc,
struct drm_file *file_priv,
uint32_t handle,
uint32_t width,
uint32_t height);
static int ast_cursor_move(struct drm_crtc *crtc,
int x, int y);
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 drm_crtc *crtc)
{
struct ast_private *ast = crtc->dev->dev_private;
struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
int i;
if (!crtc->enabled)
return;
for (i = 0; i < 256; i++)
ast_load_palette_index(ast, i, ast_crtc->lut_r[i],
ast_crtc->lut_g[i], ast_crtc->lut_b[i]);
}
static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
struct ast_vbios_mode_info *vbios_mode)
{
struct ast_private *ast = crtc->dev->dev_private;
u32 refresh_rate_index = 0, mode_id, color_index, refresh_rate;
u32 hborder, vborder;
switch (crtc->fb->bits_per_pixel) {
case 8:
vbios_mode->std_table = &vbios_stdtable[VGAModeIndex];
color_index = VGAModeIndex - 1;
break;
case 16:
vbios_mode->std_table = &vbios_stdtable[HiCModeIndex];
color_index = HiCModeIndex;
break;
case 24:
case 32:
vbios_mode->std_table = &vbios_stdtable[TrueCModeIndex];
color_index = TrueCModeIndex;
break;
default:
return false;
}
switch (crtc->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 (crtc->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 1440:
vbios_mode->enh_table = &res_1440x900[refresh_rate_index];
break;
case 1600:
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 (crtc->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);
while (vbios_mode->enh_table->refresh_rate < refresh_rate) {
vbios_mode->enh_table++;
if ((vbios_mode->enh_table->refresh_rate > refresh_rate) ||
(vbios_mode->enh_table->refresh_rate == 0xff)) {
vbios_mode->enh_table--;
break;
}
}
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);
refresh_rate_index = vbios_mode->enh_table->refresh_rate_index;
mode_id = vbios_mode->enh_table->mode_id;
if (ast->chip == AST1180) {
/* TODO 1180 */
} else {
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8c, (u8)((color_index & 0xf) << 4));
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, 0xa8);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x92, crtc->fb->bits_per_pixel);
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);
}
return true;
}
static void ast_set_std_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
struct ast_private *ast = crtc->dev->dev_private;
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 */
ast_set_index_reg(ast, AST_IO_SEQ_PORT, 0x00, 0x03);
for (i = 0; i < 4; i++) {
jreg = stdtable->seq[i];
if (!i)
jreg |= 0x20;
ast_set_index_reg(ast, AST_IO_SEQ_PORT, (i + 1) , jreg);
}
/* Set CRTC */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x00);
for (i = 0; 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 drm_crtc *crtc, struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
struct ast_private *ast = crtc->dev->dev_private;
u8 jreg05 = 0, jreg07 = 0, jreg09 = 0, jregAC = 0, jregAD = 0, jregAE = 0;
u16 temp;
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 >> 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 >> 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));
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x80);
}
static void ast_set_offset_reg(struct drm_crtc *crtc)
{
struct ast_private *ast = crtc->dev->dev_private;
u16 offset;
offset = crtc->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 drm_device *dev, struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
struct ast_private *ast = dev->dev_private;
struct ast_vbios_dclk_info *clk_info;
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 & 0x80) | ((clk_info->param3 & 0x3) << 4));
}
static void ast_set_ext_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
struct ast_private *ast = crtc->dev->dev_private;
u8 jregA0 = 0, jregA3 = 0, jregA8 = 0;
switch (crtc->fb->bits_per_pixel) {
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);
/* Set Threshold */
if (ast->chip == AST2300) {
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 drm_device *dev, struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
struct ast_private *ast = dev->dev_private;
u8 jreg;
jreg = ast_io_read8(ast, AST_IO_MISC_PORT_READ);
jreg |= (vbios_mode->enh_table->flags & SyncNN);
ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, jreg);
}
static bool ast_set_dac_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct ast_vbios_mode_info *vbios_mode)
{
switch (crtc->fb->bits_per_pixel) {
case 8:
break;
default:
return false;
}
return true;
}
static void ast_set_start_address_crt1(struct drm_crtc *crtc, unsigned offset)
{
struct ast_private *ast = crtc->dev->dev_private;
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_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct ast_private *ast = crtc->dev->dev_private;
if (ast->chip == AST1180)
return;
switch (mode) {
case DRM_MODE_DPMS_ON:
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0);
ast_crtc_load_lut(crtc);
break;
case DRM_MODE_DPMS_OFF:
ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0x20);
break;
}
}
static bool ast_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
/* ast is different - we will force move buffers out of VRAM */
static int ast_crtc_do_set_base(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int x, int y, int atomic)
{
struct ast_private *ast = crtc->dev->dev_private;
struct drm_gem_object *obj;
struct ast_framebuffer *ast_fb;
struct ast_bo *bo;
int ret;
u64 gpu_addr;
/* push the previous fb to system ram */
if (!atomic && fb) {
ast_fb = to_ast_framebuffer(fb);
obj = ast_fb->obj;
bo = gem_to_ast_bo(obj);
ret = ast_bo_reserve(bo, false);
if (ret)
return ret;
ast_bo_push_sysram(bo);
ast_bo_unreserve(bo);
}
ast_fb = to_ast_framebuffer(crtc->fb);
obj = ast_fb->obj;
bo = gem_to_ast_bo(obj);
ret = ast_bo_reserve(bo, false);
if (ret)
return ret;
ret = ast_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
if (ret) {
ast_bo_unreserve(bo);
return ret;
}
if (&ast->fbdev->afb == ast_fb) {
/* if pushing console in kmap it */
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
if (ret)
DRM_ERROR("failed to kmap fbcon\n");
}
ast_bo_unreserve(bo);
ast_set_start_address_crt1(crtc, (u32)gpu_addr);
return 0;
}
static int ast_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
return ast_crtc_do_set_base(crtc, old_fb, x, y, 0);
}
static int ast_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct ast_private *ast = crtc->dev->dev_private;
struct ast_vbios_mode_info vbios_mode;
bool ret;
if (ast->chip == AST1180) {
DRM_ERROR("AST 1180 modesetting not supported\n");
return -EINVAL;
}
ret = ast_get_vbios_mode_info(crtc, mode, adjusted_mode, &vbios_mode);
if (ret == false)
return -EINVAL;
ast_open_key(ast);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa1, 0xff, 0x04);
ast_set_std_reg(crtc, adjusted_mode, &vbios_mode);
ast_set_crtc_reg(crtc, adjusted_mode, &vbios_mode);
ast_set_offset_reg(crtc);
ast_set_dclk_reg(dev, adjusted_mode, &vbios_mode);
ast_set_ext_reg(crtc, adjusted_mode, &vbios_mode);
ast_set_sync_reg(dev, adjusted_mode, &vbios_mode);
ast_set_dac_reg(crtc, adjusted_mode, &vbios_mode);
ast_crtc_mode_set_base(crtc, x, y, old_fb);
return 0;
}
static void ast_crtc_disable(struct drm_crtc *crtc)
{
}
static void ast_crtc_prepare(struct drm_crtc *crtc)
{
}
static void ast_crtc_commit(struct drm_crtc *crtc)
{
struct ast_private *ast = crtc->dev->dev_private;
ast_set_index_reg_mask(ast, AST_IO_SEQ_PORT, 0x1, 0xdf, 0);
}
static const struct drm_crtc_helper_funcs ast_crtc_helper_funcs = {
.dpms = ast_crtc_dpms,
.mode_fixup = ast_crtc_mode_fixup,
.mode_set = ast_crtc_mode_set,
.mode_set_base = ast_crtc_mode_set_base,
.disable = ast_crtc_disable,
.load_lut = ast_crtc_load_lut,
.prepare = ast_crtc_prepare,
.commit = ast_crtc_commit,
};
static void ast_crtc_reset(struct drm_crtc *crtc)
{
}
static void ast_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t start, uint32_t size)
{
struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
int end = (start + size > 256) ? 256 : start + size, i;
/* userspace palettes are always correct as is */
for (i = start; i < end; i++) {
ast_crtc->lut_r[i] = red[i] >> 8;
ast_crtc->lut_g[i] = green[i] >> 8;
ast_crtc->lut_b[i] = blue[i] >> 8;
}
ast_crtc_load_lut(crtc);
}
static void ast_crtc_destroy(struct drm_crtc *crtc)
{
drm_crtc_cleanup(crtc);
kfree(crtc);
}
static const struct drm_crtc_funcs ast_crtc_funcs = {
.cursor_set = ast_cursor_set,
.cursor_move = ast_cursor_move,
.reset = ast_crtc_reset,
.set_config = drm_crtc_helper_set_config,
.gamma_set = ast_crtc_gamma_set,
.destroy = ast_crtc_destroy,
};
static int ast_crtc_init(struct drm_device *dev)
{
struct ast_crtc *crtc;
int i;
crtc = kzalloc(sizeof(struct ast_crtc), GFP_KERNEL);
if (!crtc)
return -ENOMEM;
drm_crtc_init(dev, &crtc->base, &ast_crtc_funcs);
drm_mode_crtc_set_gamma_size(&crtc->base, 256);
drm_crtc_helper_add(&crtc->base, &ast_crtc_helper_funcs);
for (i = 0; i < 256; i++) {
crtc->lut_r[i] = i;
crtc->lut_g[i] = i;
crtc->lut_b[i] = i;
}
return 0;
}
static void ast_encoder_destroy(struct drm_encoder *encoder)
{
drm_encoder_cleanup(encoder);
kfree(encoder);
}
static struct drm_encoder *ast_best_single_encoder(struct drm_connector *connector)
{
int enc_id = connector->encoder_ids[0];
struct drm_mode_object *obj;
struct drm_encoder *encoder;
/* pick the encoder ids */
if (enc_id) {
obj = drm_mode_object_find(connector->dev, enc_id, DRM_MODE_OBJECT_ENCODER);
if (!obj)
return NULL;
encoder = obj_to_encoder(obj);
return encoder;
}
return NULL;
}
static const struct drm_encoder_funcs ast_enc_funcs = {
.destroy = ast_encoder_destroy,
};
static void ast_encoder_dpms(struct drm_encoder *encoder, int mode)
{
}
static bool ast_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static void ast_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
}
static void ast_encoder_prepare(struct drm_encoder *encoder)
{
}
static void ast_encoder_commit(struct drm_encoder *encoder)
{
}
static const struct drm_encoder_helper_funcs ast_enc_helper_funcs = {
.dpms = ast_encoder_dpms,
.mode_fixup = ast_mode_fixup,
.prepare = ast_encoder_prepare,
.commit = ast_encoder_commit,
.mode_set = ast_encoder_mode_set,
};
static int ast_encoder_init(struct drm_device *dev)
{
struct ast_encoder *ast_encoder;
ast_encoder = kzalloc(sizeof(struct ast_encoder), GFP_KERNEL);
if (!ast_encoder)
return -ENOMEM;
drm_encoder_init(dev, &ast_encoder->base, &ast_enc_funcs,
DRM_MODE_ENCODER_DAC);
drm_encoder_helper_add(&ast_encoder->base, &ast_enc_helper_funcs);
ast_encoder->base.possible_crtcs = 1;
return 0;
}
static int ast_get_modes(struct drm_connector *connector)
{
struct ast_connector *ast_connector = to_ast_connector(connector);
struct edid *edid;
int ret;
edid = drm_get_edid(connector, &ast_connector->i2c->adapter);
if (edid) {
drm_mode_connector_update_edid_property(&ast_connector->base, edid);
ret = drm_add_edid_modes(connector, edid);
kfree(edid);
return ret;
} else
drm_mode_connector_update_edid_property(&ast_connector->base, NULL);
return 0;
}
static int ast_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
return MODE_OK;
}
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_sysfs_connector_remove(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
static enum drm_connector_status
ast_connector_detect(struct drm_connector *connector, bool force)
{
return connector_status_connected;
}
static const struct drm_connector_helper_funcs ast_connector_helper_funcs = {
.mode_valid = ast_mode_valid,
.get_modes = ast_get_modes,
.best_encoder = ast_best_single_encoder,
};
static const struct drm_connector_funcs ast_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.detect = ast_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = ast_connector_destroy,
};
static int ast_connector_init(struct drm_device *dev)
{
struct ast_connector *ast_connector;
struct drm_connector *connector;
struct drm_encoder *encoder;
ast_connector = kzalloc(sizeof(struct ast_connector), GFP_KERNEL);
if (!ast_connector)
return -ENOMEM;
connector = &ast_connector->base;
drm_connector_init(dev, connector, &ast_connector_funcs, DRM_MODE_CONNECTOR_VGA);
drm_connector_helper_add(connector, &ast_connector_helper_funcs);
connector->interlace_allowed = 0;
connector->doublescan_allowed = 0;
drm_sysfs_connector_add(connector);
connector->polled = DRM_CONNECTOR_POLL_CONNECT;
encoder = list_first_entry(&dev->mode_config.encoder_list, struct drm_encoder, head);
drm_mode_connector_attach_encoder(connector, encoder);
ast_connector->i2c = ast_i2c_create(dev);
if (!ast_connector->i2c)
DRM_ERROR("failed to add ddc bus for connector\n");
return 0;
}
/* allocate cursor cache and pin at start of VRAM */
static int ast_cursor_init(struct drm_device *dev)
{
struct ast_private *ast = dev->dev_private;
int size;
int ret;
struct drm_gem_object *obj;
struct ast_bo *bo;
uint64_t gpu_addr;
size = (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE) * AST_DEFAULT_HWC_NUM;
ret = ast_gem_create(dev, size, true, &obj);
if (ret)
return ret;
bo = gem_to_ast_bo(obj);
ret = ast_bo_reserve(bo, false);
if (unlikely(ret != 0))
goto fail;
ret = ast_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
ast_bo_unreserve(bo);
if (ret)
goto fail;
/* kmap the object */
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &ast->cache_kmap);
if (ret)
goto fail;
ast->cursor_cache = obj;
ast->cursor_cache_gpu_addr = gpu_addr;
DRM_DEBUG_KMS("pinned cursor cache at %llx\n", ast->cursor_cache_gpu_addr);
return 0;
fail:
return ret;
}
static void ast_cursor_fini(struct drm_device *dev)
{
struct ast_private *ast = dev->dev_private;
ttm_bo_kunmap(&ast->cache_kmap);
drm_gem_object_unreference_unlocked(ast->cursor_cache);
}
int ast_mode_init(struct drm_device *dev)
{
ast_cursor_init(dev);
ast_crtc_init(dev);
ast_encoder_init(dev);
ast_connector_init(dev);
return 0;
}
void ast_mode_fini(struct drm_device *dev)
{
ast_cursor_fini(dev);
}
static int get_clock(void *i2c_priv)
{
struct ast_i2c_chan *i2c = i2c_priv;
struct ast_private *ast = i2c->dev->dev_private;
uint32_t val;
val = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x10) >> 4;
return val & 1 ? 1 : 0;
}
static int get_data(void *i2c_priv)
{
struct ast_i2c_chan *i2c = i2c_priv;
struct ast_private *ast = i2c->dev->dev_private;
uint32_t val;
val = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb7, 0x20) >> 5;
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 = i2c->dev->dev_private;
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, 0xfe, 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 = i2c->dev->dev_private;
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, 0xfb, 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->pdev->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_ERROR("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);
}
static void ast_show_cursor(struct drm_crtc *crtc)
{
struct ast_private *ast = crtc->dev->dev_private;
u8 jreg;
jreg = 0x2;
/* enable ARGB cursor */
jreg |= 1;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, jreg);
}
static void ast_hide_cursor(struct drm_crtc *crtc)
{
struct ast_private *ast = crtc->dev->dev_private;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, 0x00);
}
static u32 copy_cursor_image(u8 *src, u8 *dst, 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 *srcxor, *dstxor;
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[0].b[1] | (srcdata32[1].b[0] >> 4);
data32.b[3] = srcdata32[0].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;
}
return csum;
}
static int ast_cursor_set(struct drm_crtc *crtc,
struct drm_file *file_priv,
uint32_t handle,
uint32_t width,
uint32_t height)
{
struct ast_private *ast = crtc->dev->dev_private;
struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
struct drm_gem_object *obj;
struct ast_bo *bo;
uint64_t gpu_addr;
u32 csum;
int ret;
struct ttm_bo_kmap_obj uobj_map;
u8 *src, *dst;
bool src_isiomem, dst_isiomem;
if (!handle) {
ast_hide_cursor(crtc);
return 0;
}
if (width > AST_MAX_HWC_WIDTH || height > AST_MAX_HWC_HEIGHT)
return -EINVAL;
obj = drm_gem_object_lookup(crtc->dev, file_priv, handle);
if (!obj) {
DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
return -ENOENT;
}
bo = gem_to_ast_bo(obj);
ret = ast_bo_reserve(bo, false);
if (ret)
goto fail;
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
dst = ttm_kmap_obj_virtual(&ast->cache_kmap, &dst_isiomem);
if (src_isiomem == true)
DRM_ERROR("src cursor bo should be in main memory\n");
if (dst_isiomem == false)
DRM_ERROR("dst bo should be in VRAM\n");
dst += (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor;
/* do data transfer to cursor cache */
csum = copy_cursor_image(src, dst, width, height);
/* write checksum + signature */
ttm_bo_kunmap(&uobj_map);
ast_bo_unreserve(bo);
{
u8 *dst = (u8 *)ast->cache_kmap.virtual + (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + 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);
/* set pattern offset */
gpu_addr = ast->cursor_cache_gpu_addr;
gpu_addr += (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor;
gpu_addr >>= 3;
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc8, gpu_addr & 0xff);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc9, (gpu_addr >> 8) & 0xff);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xca, (gpu_addr >> 16) & 0xff);
}
ast_crtc->cursor_width = width;
ast_crtc->cursor_height = height;
ast_crtc->offset_x = AST_MAX_HWC_WIDTH - width;
ast_crtc->offset_y = AST_MAX_HWC_WIDTH - height;
ast->next_cursor = (ast->next_cursor + 1) % AST_DEFAULT_HWC_NUM;
ast_show_cursor(crtc);
drm_gem_object_unreference_unlocked(obj);
return 0;
fail:
drm_gem_object_unreference_unlocked(obj);
return ret;
}
static int ast_cursor_move(struct drm_crtc *crtc,
int x, int y)
{
struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
struct ast_private *ast = crtc->dev->dev_private;
int x_offset, y_offset;
u8 *sig;
sig = (u8 *)ast->cache_kmap.virtual + (AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE)*ast->next_cursor + AST_HWC_SIZE;
writel(x, sig + AST_HWC_SIGNATURE_X);
writel(y, sig + AST_HWC_SIGNATURE_Y);
x_offset = ast_crtc->offset_x;
y_offset = ast_crtc->offset_y;
if (x < 0) {
x_offset = (-x) + ast_crtc->offset_x;
x = 0;
}
if (y < 0) {
y_offset = (-y) + ast_crtc->offset_y;
y = 0;
}
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, (x & 0xff));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc5, ((x >> 8) & 0x0f));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc6, (y & 0xff));
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xc7, ((y >> 8) & 0x07));
/* dummy write to fire HWC */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xCB, 0xFF, 0x00);
return 0;
}