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path: root/drivers/gpu/drm/ast/ast_cursor.c
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Diffstat (limited to 'drivers/gpu/drm/ast/ast_cursor.c')
-rw-r--r--drivers/gpu/drm/ast/ast_cursor.c286
1 files changed, 0 insertions, 286 deletions
diff --git a/drivers/gpu/drm/ast/ast_cursor.c b/drivers/gpu/drm/ast/ast_cursor.c
deleted file mode 100644
index fac1ee79c372..000000000000
--- a/drivers/gpu/drm/ast/ast_cursor.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/*
- * 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 <drm/drm_gem_vram_helper.h>
-#include <drm/drm_managed.h>
-
-#include "ast_drv.h"
-
-static void ast_cursor_fini(struct ast_private *ast)
-{
- size_t i;
- struct drm_gem_vram_object *gbo;
-
- for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
- gbo = ast->cursor.gbo[i];
- drm_gem_vram_unpin(gbo);
- drm_gem_vram_put(gbo);
- }
-}
-
-static void ast_cursor_release(struct drm_device *dev, void *ptr)
-{
- struct ast_private *ast = to_ast_private(dev);
-
- ast_cursor_fini(ast);
-}
-
-/*
- * Allocate cursor BOs and pin them at the end of VRAM.
- */
-int ast_cursor_init(struct ast_private *ast)
-{
- struct drm_device *dev = &ast->base;
- size_t size, i;
- struct drm_gem_vram_object *gbo;
- int ret;
-
- size = roundup(AST_HWC_SIZE + AST_HWC_SIGNATURE_SIZE, PAGE_SIZE);
-
- for (i = 0; i < ARRAY_SIZE(ast->cursor.gbo); ++i) {
- gbo = drm_gem_vram_create(dev, size, 0);
- if (IS_ERR(gbo)) {
- ret = PTR_ERR(gbo);
- goto err_drm_gem_vram_put;
- }
- ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM |
- DRM_GEM_VRAM_PL_FLAG_TOPDOWN);
- if (ret) {
- drm_gem_vram_put(gbo);
- goto err_drm_gem_vram_put;
- }
- ast->cursor.gbo[i] = gbo;
- }
-
- return drmm_add_action_or_reset(dev, ast_cursor_release, NULL);
-
-err_drm_gem_vram_put:
- while (i) {
- --i;
- gbo = ast->cursor.gbo[i];
- drm_gem_vram_unpin(gbo);
- drm_gem_vram_put(gbo);
- }
- return ret;
-}
-
-static void 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);
-}
-
-int ast_cursor_blit(struct ast_private *ast, struct drm_framebuffer *fb)
-{
- struct drm_device *dev = &ast->base;
- struct drm_gem_vram_object *dst_gbo = ast->cursor.gbo[ast->cursor.next_index];
- struct drm_gem_vram_object *src_gbo = drm_gem_vram_of_gem(fb->obj[0]);
- struct dma_buf_map src_map, dst_map;
- void __iomem *dst;
- void *src;
- int ret;
-
- if (drm_WARN_ON_ONCE(dev, fb->width > AST_MAX_HWC_WIDTH) ||
- drm_WARN_ON_ONCE(dev, fb->height > AST_MAX_HWC_HEIGHT))
- return -EINVAL;
-
- ret = drm_gem_vram_vmap(src_gbo, &src_map);
- if (ret)
- return ret;
- src = src_map.vaddr; /* TODO: Use mapping abstraction properly */
-
- ret = drm_gem_vram_vmap(dst_gbo, &dst_map);
- if (ret)
- goto err_drm_gem_vram_vunmap;
- dst = dst_map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
-
- /* do data transfer to cursor BO */
- update_cursor_image(dst, src, fb->width, fb->height);
-
- drm_gem_vram_vunmap(dst_gbo, &dst_map);
- drm_gem_vram_vunmap(src_gbo, &src_map);
-
- return 0;
-
-err_drm_gem_vram_vunmap:
- drm_gem_vram_vunmap(src_gbo, &src_map);
- return ret;
-}
-
-static void ast_cursor_set_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);
-}
-
-void ast_cursor_page_flip(struct ast_private *ast)
-{
- struct drm_device *dev = &ast->base;
- struct drm_gem_vram_object *gbo;
- s64 off;
-
- gbo = ast->cursor.gbo[ast->cursor.next_index];
-
- off = drm_gem_vram_offset(gbo);
- if (drm_WARN_ON_ONCE(dev, off < 0))
- return; /* Bug: we didn't pin the cursor HW BO to VRAM. */
-
- ast_cursor_set_base(ast, off);
-
- ++ast->cursor.next_index;
- ast->cursor.next_index %= ARRAY_SIZE(ast->cursor.gbo);
-}
-
-static void ast_cursor_set_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);
-}
-
-void ast_cursor_show(struct ast_private *ast, int x, int y,
- unsigned int offset_x, unsigned int offset_y)
-{
- struct drm_device *dev = &ast->base;
- struct drm_gem_vram_object *gbo = ast->cursor.gbo[ast->cursor.next_index];
- struct dma_buf_map map;
- u8 x_offset, y_offset;
- u8 __iomem *dst;
- u8 __iomem *sig;
- u8 jreg;
- int ret;
-
- ret = drm_gem_vram_vmap(gbo, &map);
- if (drm_WARN_ONCE(dev, ret, "drm_gem_vram_vmap() failed, ret=%d\n", ret))
- return;
- dst = map.vaddr_iomem; /* TODO: Use mapping abstraction properly */
-
- sig = dst + AST_HWC_SIZE;
- writel(x, sig + AST_HWC_SIGNATURE_X);
- writel(y, sig + AST_HWC_SIGNATURE_Y);
-
- drm_gem_vram_vunmap(gbo, &map);
-
- if (x < 0) {
- x_offset = (-x) + offset_x;
- x = 0;
- } else {
- x_offset = offset_x;
- }
- if (y < 0) {
- y_offset = (-y) + offset_y;
- y = 0;
- } else {
- y_offset = offset_y;
- }
-
- ast_cursor_set_location(ast, x, y, x_offset, y_offset);
-
- /* dummy write to fire HWC */
- jreg = 0x02 |
- 0x01; /* enable ARGB4444 cursor */
- ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, jreg);
-}
-
-void ast_cursor_hide(struct ast_private *ast)
-{
- ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xcb, 0xfc, 0x00);
-}
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