diff options
Diffstat (limited to 'drivers/gpu/drm/ast/ast_mode.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_mode.c | 1160 |
1 files changed, 1160 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c new file mode 100644 index 00000000000..65f9d231af1 --- /dev/null +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -0,0 +1,1160 @@ +/* + * 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 "drmP.h" +#include "drm_crtc.h" +#include "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); + } +} + +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); +} + +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; +} + +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, + 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, + .disable = ast_crtc_disable, + .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, +}; + +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, + 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, +}; + +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); + 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, +}; + +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 */ +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_ERROR("pinned cursor cache at %llx\n", ast->cursor_cache_gpu_addr); + return 0; +fail: + return ret; +} + +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); +} + +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); +} + +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; +} |