From e687651bc1ed96b0ad2ee9464f341c53563b5353 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 20 Dec 2013 13:58:33 +0100 Subject: [PATCH] drm/tegra: Add hardware cursor support Enable hardware cursor support on Tegra124. Earlier generations support the hardware cursor to some degree as well, but not in a way that can be generically exposed. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dc.c | 111 +++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/tegra/dc.h | 30 +++++++++- 2 files changed, 138 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index 323216789b69..ef40381f3909 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -17,6 +17,7 @@ struct tegra_dc_soc_info { bool supports_interlacing; + bool supports_cursor; }; struct tegra_plane { @@ -477,6 +478,109 @@ void tegra_dc_disable_vblank(struct tegra_dc *dc) spin_unlock_irqrestore(&dc->lock, flags); } +static int tegra_dc_cursor_set2(struct drm_crtc *crtc, struct drm_file *file, + uint32_t handle, uint32_t width, + uint32_t height, int32_t hot_x, int32_t hot_y) +{ + unsigned long value = CURSOR_CLIP_DISPLAY; + struct tegra_dc *dc = to_tegra_dc(crtc); + struct drm_gem_object *gem; + struct tegra_bo *bo = NULL; + + if (!dc->soc->supports_cursor) + return -ENXIO; + + if (width != height) + return -EINVAL; + + switch (width) { + case 32: + value |= CURSOR_SIZE_32x32; + break; + + case 64: + value |= CURSOR_SIZE_64x64; + break; + + case 128: + value |= CURSOR_SIZE_128x128; + + case 256: + value |= CURSOR_SIZE_256x256; + break; + + default: + return -EINVAL; + } + + if (handle) { + gem = drm_gem_object_lookup(crtc->dev, file, handle); + if (!gem) + return -ENOENT; + + bo = to_tegra_bo(gem); + } + + if (bo) { + unsigned long addr = (bo->paddr & 0xfffffc00) >> 10; +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT + unsigned long high = (bo->paddr & 0xfffffffc) >> 32; +#endif + + tegra_dc_writel(dc, value | addr, DC_DISP_CURSOR_START_ADDR); + +#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT + tegra_dc_writel(dc, high, DC_DISP_CURSOR_START_ADDR_HI); +#endif + + value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); + value |= CURSOR_ENABLE; + tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); + + value = tegra_dc_readl(dc, DC_DISP_BLEND_CURSOR_CONTROL); + value &= ~CURSOR_DST_BLEND_MASK; + value &= ~CURSOR_SRC_BLEND_MASK; + value |= CURSOR_MODE_NORMAL; + value |= CURSOR_DST_BLEND_NEG_K1_TIMES_SRC; + value |= CURSOR_SRC_BLEND_K1_TIMES_SRC; + value |= CURSOR_ALPHA; + tegra_dc_writel(dc, value, DC_DISP_BLEND_CURSOR_CONTROL); + } else { + value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS); + value &= ~CURSOR_ENABLE; + tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS); + } + + tegra_dc_writel(dc, CURSOR_ACT_REQ << 8, DC_CMD_STATE_CONTROL); + tegra_dc_writel(dc, CURSOR_ACT_REQ, DC_CMD_STATE_CONTROL); + + tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL); + tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL); + + return 0; +} + +static int tegra_dc_cursor_move(struct drm_crtc *crtc, int x, int y) +{ + struct tegra_dc *dc = to_tegra_dc(crtc); + unsigned long value; + + if (!dc->soc->supports_cursor) + return -ENXIO; + + value = ((y & 0x3fff) << 16) | (x & 0x3fff); + tegra_dc_writel(dc, value, DC_DISP_CURSOR_POSITION); + + tegra_dc_writel(dc, CURSOR_ACT_REQ << 8, DC_CMD_STATE_CONTROL); + tegra_dc_writel(dc, CURSOR_ACT_REQ, DC_CMD_STATE_CONTROL); + + /* XXX: only required on generations earlier than Tegra124? */ + tegra_dc_writel(dc, GENERAL_ACT_REQ << 8, DC_CMD_STATE_CONTROL); + tegra_dc_writel(dc, GENERAL_ACT_REQ, DC_CMD_STATE_CONTROL); + + return 0; +} + static void tegra_dc_finish_page_flip(struct tegra_dc *dc) { struct drm_device *drm = dc->base.dev; @@ -553,6 +657,8 @@ static void tegra_dc_destroy(struct drm_crtc *crtc) } static const struct drm_crtc_funcs tegra_crtc_funcs = { + .cursor_set2 = tegra_dc_cursor_set2, + .cursor_move = tegra_dc_cursor_move, .page_flip = tegra_dc_page_flip, .set_config = drm_crtc_helper_set_config, .destroy = tegra_dc_destroy, @@ -999,6 +1105,8 @@ static int tegra_dc_show_regs(struct seq_file *s, void *data) DUMP_REG(DC_DISP_SD_BL_CONTROL); DUMP_REG(DC_DISP_SD_HW_K_VALUES); DUMP_REG(DC_DISP_SD_MAN_K_VALUES); + DUMP_REG(DC_DISP_CURSOR_START_ADDR_HI); + DUMP_REG(DC_DISP_BLEND_CURSOR_CONTROL); DUMP_REG(DC_WIN_WIN_OPTIONS); DUMP_REG(DC_WIN_BYTE_SWAP); DUMP_REG(DC_WIN_BUFFER_CONTROL); @@ -1168,14 +1276,17 @@ static const struct host1x_client_ops dc_client_ops = { static const struct tegra_dc_soc_info tegra20_dc_soc_info = { .supports_interlacing = false, + .supports_cursor = false, }; static const struct tegra_dc_soc_info tegra30_dc_soc_info = { .supports_interlacing = false, + .supports_cursor = false, }; static const struct tegra_dc_soc_info tegra124_dc_soc_info = { .supports_interlacing = true, + .supports_cursor = true, }; static const struct of_device_id tegra_dc_of_match[] = { diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h index 44e31aefe899..78c5feff95d2 100644 --- a/drivers/gpu/drm/tegra/dc.h +++ b/drivers/gpu/drm/tegra/dc.h @@ -67,10 +67,12 @@ #define WIN_A_ACT_REQ (1 << 1) #define WIN_B_ACT_REQ (1 << 2) #define WIN_C_ACT_REQ (1 << 3) +#define CURSOR_ACT_REQ (1 << 7) #define GENERAL_UPDATE (1 << 8) #define WIN_A_UPDATE (1 << 9) #define WIN_B_UPDATE (1 << 10) #define WIN_C_UPDATE (1 << 11) +#define CURSOR_UPDATE (1 << 15) #define NC_HOST_TRIG (1 << 24) #define DC_CMD_DISPLAY_WINDOW_HEADER 0x042 @@ -116,9 +118,10 @@ #define DC_DISP_DISP_SIGNAL_OPTIONS1 0x401 #define DC_DISP_DISP_WIN_OPTIONS 0x402 -#define HDMI_ENABLE (1 << 30) -#define DSI_ENABLE (1 << 29) -#define SOR_ENABLE (1 << 25) +#define HDMI_ENABLE (1 << 30) +#define DSI_ENABLE (1 << 29) +#define SOR_ENABLE (1 << 25) +#define CURSOR_ENABLE (1 << 16) #define DC_DISP_DISP_MEM_HIGH_PRIORITY 0x403 #define CURSOR_THRESHOLD(x) (((x) & 0x03) << 24) @@ -266,6 +269,14 @@ #define DC_DISP_CURSOR_BACKGROUND 0x43d #define DC_DISP_CURSOR_START_ADDR 0x43e +#define CURSOR_CLIP_DISPLAY (0 << 28) +#define CURSOR_CLIP_WIN_A (1 << 28) +#define CURSOR_CLIP_WIN_B (2 << 28) +#define CURSOR_CLIP_WIN_C (3 << 28) +#define CURSOR_SIZE_32x32 (0 << 24) +#define CURSOR_SIZE_64x64 (1 << 24) +#define CURSOR_SIZE_128x128 (2 << 24) +#define CURSOR_SIZE_256x256 (3 << 24) #define DC_DISP_CURSOR_START_ADDR_NS 0x43f #define DC_DISP_CURSOR_POSITION 0x440 @@ -302,6 +313,19 @@ #define INTERLACE_START (1 << 1) #define INTERLACE_ENABLE (1 << 0) +#define DC_DISP_CURSOR_START_ADDR_HI 0x4ec +#define DC_DISP_BLEND_CURSOR_CONTROL 0x4f1 +#define CURSOR_MODE_LEGACY (0 << 24) +#define CURSOR_MODE_NORMAL (1 << 24) +#define CURSOR_DST_BLEND_ZERO (0 << 16) +#define CURSOR_DST_BLEND_K1 (1 << 16) +#define CURSOR_DST_BLEND_NEG_K1_TIMES_SRC (2 << 16) +#define CURSOR_DST_BLEND_MASK (3 << 16) +#define CURSOR_SRC_BLEND_K1 (0 << 8) +#define CURSOR_SRC_BLEND_K1_TIMES_SRC (1 << 8) +#define CURSOR_SRC_BLEND_MASK (3 << 8) +#define CURSOR_ALPHA 0xff + #define DC_WIN_CSC_YOF 0x611 #define DC_WIN_CSC_KYRGB 0x612 #define DC_WIN_CSC_KUR 0x613 -- 2.34.1