diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c deleted file mode 100644 index 54ca794db3e9..000000000000 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ /dev/null @@ -1,342 +0,0 @@ -/* - * Copyright (c) 2015 MediaTek Inc. - * Authors: - * YT Shen <yt.shen@mediatek.com> - * CK Hu <ck.hu@mediatek.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/clk.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_irq.h> -#include <linux/of_platform.h> -#include <linux/platform_device.h> -#include <drm/drmP.h> -#include "mtk_drm_drv.h" -#include "mtk_drm_plane.h" -#include "mtk_drm_ddp_comp.h" -#include "mtk_drm_crtc.h" - -#define DISP_OD_EN 0x0000 -#define DISP_OD_INTEN 0x0008 -#define DISP_OD_INTSTA 0x000c -#define DISP_OD_CFG 0x0020 -#define DISP_OD_SIZE 0x0030 -#define DISP_DITHER_5 0x0114 -#define DISP_DITHER_7 0x011c -#define DISP_DITHER_15 0x013c -#define DISP_DITHER_16 0x0140 - -#define DISP_REG_UFO_START 0x0000 - -#define DISP_AAL_EN 0x0000 -#define DISP_AAL_SIZE 0x0030 - -#define DISP_GAMMA_EN 0x0000 -#define DISP_GAMMA_CFG 0x0020 -#define DISP_GAMMA_SIZE 0x0030 -#define DISP_GAMMA_LUT 0x0700 - -#define LUT_10BIT_MASK 0x03ff - -#define OD_RELAYMODE BIT(0) - -#define UFO_BYPASS BIT(2) - -#define AAL_EN BIT(0) - -#define GAMMA_EN BIT(0) -#define GAMMA_LUT_EN BIT(1) - -#define DISP_DITHERING BIT(2) -#define DITHER_LSB_ERR_SHIFT_R(x) (((x) & 0x7) << 28) -#define DITHER_OVFLW_BIT_R(x) (((x) & 0x7) << 24) -#define DITHER_ADD_LSHIFT_R(x) (((x) & 0x7) << 20) -#define DITHER_ADD_RSHIFT_R(x) (((x) & 0x7) << 16) -#define DITHER_NEW_BIT_MODE BIT(0) -#define DITHER_LSB_ERR_SHIFT_B(x) (((x) & 0x7) << 28) -#define DITHER_OVFLW_BIT_B(x) (((x) & 0x7) << 24) -#define DITHER_ADD_LSHIFT_B(x) (((x) & 0x7) << 20) -#define DITHER_ADD_RSHIFT_B(x) (((x) & 0x7) << 16) -#define DITHER_LSB_ERR_SHIFT_G(x) (((x) & 0x7) << 12) -#define DITHER_OVFLW_BIT_G(x) (((x) & 0x7) << 8) -#define DITHER_ADD_LSHIFT_G(x) (((x) & 0x7) << 4) -#define DITHER_ADD_RSHIFT_G(x) (((x) & 0x7) << 0) - -void mtk_dither_set(struct mtk_ddp_comp *comp, unsigned int bpc, - unsigned int CFG) -{ - /* If bpc equal to 0, the dithering function didn't be enabled */ - if (bpc == 0) - return; - - if (bpc >= MTK_MIN_BPC) { - writel(0, comp->regs + DISP_DITHER_5); - writel(0, comp->regs + DISP_DITHER_7); - writel(DITHER_LSB_ERR_SHIFT_R(MTK_MAX_BPC - bpc) | - DITHER_ADD_LSHIFT_R(MTK_MAX_BPC - bpc) | - DITHER_NEW_BIT_MODE, - comp->regs + DISP_DITHER_15); - writel(DITHER_LSB_ERR_SHIFT_B(MTK_MAX_BPC - bpc) | - DITHER_ADD_LSHIFT_B(MTK_MAX_BPC - bpc) | - DITHER_LSB_ERR_SHIFT_G(MTK_MAX_BPC - bpc) | - DITHER_ADD_LSHIFT_G(MTK_MAX_BPC - bpc), - comp->regs + DISP_DITHER_16); - writel(DISP_DITHERING, comp->regs + CFG); - } -} - -static void mtk_od_config(struct mtk_ddp_comp *comp, unsigned int w, - unsigned int h, unsigned int vrefresh, - unsigned int bpc) -{ - writel(w << 16 | h, comp->regs + DISP_OD_SIZE); - writel(OD_RELAYMODE, comp->regs + DISP_OD_CFG); - mtk_dither_set(comp, bpc, DISP_OD_CFG); -} - -static void mtk_od_start(struct mtk_ddp_comp *comp) -{ - writel(1, comp->regs + DISP_OD_EN); -} - -static void mtk_ufoe_start(struct mtk_ddp_comp *comp) -{ - writel(UFO_BYPASS, comp->regs + DISP_REG_UFO_START); -} - -static void mtk_aal_config(struct mtk_ddp_comp *comp, unsigned int w, - unsigned int h, unsigned int vrefresh, - unsigned int bpc) -{ - writel(h << 16 | w, comp->regs + DISP_AAL_SIZE); -} - -static void mtk_aal_start(struct mtk_ddp_comp *comp) -{ - writel(AAL_EN, comp->regs + DISP_AAL_EN); -} - -static void mtk_aal_stop(struct mtk_ddp_comp *comp) -{ - writel_relaxed(0x0, comp->regs + DISP_AAL_EN); -} - -static void mtk_gamma_config(struct mtk_ddp_comp *comp, unsigned int w, - unsigned int h, unsigned int vrefresh, - unsigned int bpc) -{ - writel(h << 16 | w, comp->regs + DISP_GAMMA_SIZE); - mtk_dither_set(comp, bpc, DISP_GAMMA_CFG); -} - -static void mtk_gamma_start(struct mtk_ddp_comp *comp) -{ - writel(GAMMA_EN, comp->regs + DISP_GAMMA_EN); -} - -static void mtk_gamma_stop(struct mtk_ddp_comp *comp) -{ - writel_relaxed(0x0, comp->regs + DISP_GAMMA_EN); -} - -static void mtk_gamma_set(struct mtk_ddp_comp *comp, - struct drm_crtc_state *state) -{ - unsigned int i, reg; - struct drm_color_lut *lut; - void __iomem *lut_base; - u32 word; - - if (state->gamma_lut) { - reg = readl(comp->regs + DISP_GAMMA_CFG); - reg = reg | GAMMA_LUT_EN; - writel(reg, comp->regs + DISP_GAMMA_CFG); - lut_base = comp->regs + DISP_GAMMA_LUT; - lut = (struct drm_color_lut *)state->gamma_lut->data; - for (i = 0; i < MTK_LUT_SIZE; i++) { - word = (((lut[i].red >> 6) & LUT_10BIT_MASK) << 20) + - (((lut[i].green >> 6) & LUT_10BIT_MASK) << 10) + - ((lut[i].blue >> 6) & LUT_10BIT_MASK); - writel(word, (lut_base + i * 4)); - } - } -} - -static const struct mtk_ddp_comp_funcs ddp_aal = { - .gamma_set = mtk_gamma_set, - .config = mtk_aal_config, - .start = mtk_aal_start, - .stop = mtk_aal_stop, -}; - -static const struct mtk_ddp_comp_funcs ddp_gamma = { - .gamma_set = mtk_gamma_set, - .config = mtk_gamma_config, - .start = mtk_gamma_start, - .stop = mtk_gamma_stop, -}; - -static const struct mtk_ddp_comp_funcs ddp_od = { - .config = mtk_od_config, - .start = mtk_od_start, -}; - -static const struct mtk_ddp_comp_funcs ddp_ufoe = { - .start = mtk_ufoe_start, -}; - -static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = { - [MTK_DISP_OVL] = "ovl", - [MTK_DISP_RDMA] = "rdma", - [MTK_DISP_WDMA] = "wdma", - [MTK_DISP_COLOR] = "color", - [MTK_DISP_AAL] = "aal", - [MTK_DISP_GAMMA] = "gamma", - [MTK_DISP_UFOE] = "ufoe", - [MTK_DSI] = "dsi", - [MTK_DPI] = "dpi", - [MTK_DISP_PWM] = "pwm", - [MTK_DISP_MUTEX] = "mutex", - [MTK_DISP_OD] = "od", - [MTK_DISP_BLS] = "bls", -}; - -struct mtk_ddp_comp_match { - enum mtk_ddp_comp_type type; - int alias_id; - const struct mtk_ddp_comp_funcs *funcs; -}; - -static const struct mtk_ddp_comp_match mtk_ddp_matches[DDP_COMPONENT_ID_MAX] = { - [DDP_COMPONENT_AAL0] = { MTK_DISP_AAL, 0, &ddp_aal }, - [DDP_COMPONENT_AAL1] = { MTK_DISP_AAL, 1, &ddp_aal }, - [DDP_COMPONENT_BLS] = { MTK_DISP_BLS, 0, NULL }, - [DDP_COMPONENT_COLOR0] = { MTK_DISP_COLOR, 0, NULL }, - [DDP_COMPONENT_COLOR1] = { MTK_DISP_COLOR, 1, NULL }, - [DDP_COMPONENT_DPI0] = { MTK_DPI, 0, NULL }, - [DDP_COMPONENT_DPI1] = { MTK_DPI, 1, NULL }, - [DDP_COMPONENT_DSI0] = { MTK_DSI, 0, NULL }, - [DDP_COMPONENT_DSI1] = { MTK_DSI, 1, NULL }, - [DDP_COMPONENT_DSI2] = { MTK_DSI, 2, NULL }, - [DDP_COMPONENT_DSI3] = { MTK_DSI, 3, NULL }, - [DDP_COMPONENT_GAMMA] = { MTK_DISP_GAMMA, 0, &ddp_gamma }, - [DDP_COMPONENT_OD0] = { MTK_DISP_OD, 0, &ddp_od }, - [DDP_COMPONENT_OD1] = { MTK_DISP_OD, 1, &ddp_od }, - [DDP_COMPONENT_OVL0] = { MTK_DISP_OVL, 0, NULL }, - [DDP_COMPONENT_OVL1] = { MTK_DISP_OVL, 1, NULL }, - [DDP_COMPONENT_PWM0] = { MTK_DISP_PWM, 0, NULL }, - [DDP_COMPONENT_PWM1] = { MTK_DISP_PWM, 1, NULL }, - [DDP_COMPONENT_PWM2] = { MTK_DISP_PWM, 2, NULL }, - [DDP_COMPONENT_RDMA0] = { MTK_DISP_RDMA, 0, NULL }, - [DDP_COMPONENT_RDMA1] = { MTK_DISP_RDMA, 1, NULL }, - [DDP_COMPONENT_RDMA2] = { MTK_DISP_RDMA, 2, NULL }, - [DDP_COMPONENT_UFOE] = { MTK_DISP_UFOE, 0, &ddp_ufoe }, - [DDP_COMPONENT_WDMA0] = { MTK_DISP_WDMA, 0, NULL }, - [DDP_COMPONENT_WDMA1] = { MTK_DISP_WDMA, 1, NULL }, -}; - -int mtk_ddp_comp_get_id(struct device_node *node, - enum mtk_ddp_comp_type comp_type) -{ - int id = of_alias_get_id(node, mtk_ddp_comp_stem[comp_type]); - int i; - - for (i = 0; i < ARRAY_SIZE(mtk_ddp_matches); i++) { - if (comp_type == mtk_ddp_matches[i].type && - (id < 0 || id == mtk_ddp_matches[i].alias_id)) - return i; - } - - return -EINVAL; -} - -int mtk_ddp_comp_init(struct device *dev, struct device_node *node, - struct mtk_ddp_comp *comp, enum mtk_ddp_comp_id comp_id, - const struct mtk_ddp_comp_funcs *funcs) -{ - enum mtk_ddp_comp_type type; - struct device_node *larb_node; - struct platform_device *larb_pdev; - - if (comp_id < 0 || comp_id >= DDP_COMPONENT_ID_MAX) - return -EINVAL; - - type = mtk_ddp_matches[comp_id].type; - - comp->id = comp_id; - comp->funcs = funcs ?: mtk_ddp_matches[comp_id].funcs; - - if (comp_id == DDP_COMPONENT_BLS || - comp_id == DDP_COMPONENT_DPI0 || - comp_id == DDP_COMPONENT_DPI1 || - comp_id == DDP_COMPONENT_DSI0 || - comp_id == DDP_COMPONENT_DSI1 || - comp_id == DDP_COMPONENT_DSI2 || - comp_id == DDP_COMPONENT_DSI3 || - comp_id == DDP_COMPONENT_PWM0) { - comp->regs = NULL; - comp->clk = NULL; - comp->irq = 0; - return 0; - } - - comp->regs = of_iomap(node, 0); - comp->irq = of_irq_get(node, 0); - comp->clk = of_clk_get(node, 0); - if (IS_ERR(comp->clk)) - return PTR_ERR(comp->clk); - - /* Only DMA capable components need the LARB property */ - comp->larb_dev = NULL; - if (type != MTK_DISP_OVL && - type != MTK_DISP_RDMA && - type != MTK_DISP_WDMA) - return 0; - - larb_node = of_parse_phandle(node, "mediatek,larb", 0); - if (!larb_node) { - dev_err(dev, - "Missing mediadek,larb phandle in %pOF node\n", node); - return -EINVAL; - } - - larb_pdev = of_find_device_by_node(larb_node); - if (!larb_pdev) { - dev_warn(dev, "Waiting for larb device %pOF\n", larb_node); - of_node_put(larb_node); - return -EPROBE_DEFER; - } - of_node_put(larb_node); - - comp->larb_dev = &larb_pdev->dev; - - return 0; -} - -int mtk_ddp_comp_register(struct drm_device *drm, struct mtk_ddp_comp *comp) -{ - struct mtk_drm_private *private = drm->dev_private; - - if (private->ddp_comp[comp->id]) - return -EBUSY; - - private->ddp_comp[comp->id] = comp; - return 0; -} - -void mtk_ddp_comp_unregister(struct drm_device *drm, struct mtk_ddp_comp *comp) -{ - struct mtk_drm_private *private = drm->dev_private; - - private->ddp_comp[comp->id] = NULL; -} |