![Matthias Brugger](/assets/img/avatar_default.png)
It can happen that the mmsys clock drivers aren't probed before the platform driver gets invoked. The platform driver used to print a warning that the driver failed to get the clocks. Omit this error on the defered probe path. Signed-off-by: Matthias Brugger <mbrugger@suse.com> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
451 lines
12 KiB
C
451 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2015 MediaTek Inc.
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*/
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#include <drm/drm_fourcc.h>
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#include <linux/clk.h>
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#include <linux/component.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/of_irq.h>
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#include <linux/platform_device.h>
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#include <linux/soc/mediatek/mtk-cmdq.h>
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#include "mtk_drm_crtc.h"
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#include "mtk_drm_ddp_comp.h"
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#define DISP_REG_OVL_INTEN 0x0004
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#define OVL_FME_CPL_INT BIT(1)
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#define DISP_REG_OVL_INTSTA 0x0008
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#define DISP_REG_OVL_EN 0x000c
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#define DISP_REG_OVL_RST 0x0014
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#define DISP_REG_OVL_ROI_SIZE 0x0020
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#define DISP_REG_OVL_DATAPATH_CON 0x0024
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#define OVL_BGCLR_SEL_IN BIT(2)
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#define DISP_REG_OVL_ROI_BGCLR 0x0028
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#define DISP_REG_OVL_SRC_CON 0x002c
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#define DISP_REG_OVL_CON(n) (0x0030 + 0x20 * (n))
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#define DISP_REG_OVL_SRC_SIZE(n) (0x0038 + 0x20 * (n))
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#define DISP_REG_OVL_OFFSET(n) (0x003c + 0x20 * (n))
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#define DISP_REG_OVL_PITCH(n) (0x0044 + 0x20 * (n))
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#define DISP_REG_OVL_RDMA_CTRL(n) (0x00c0 + 0x20 * (n))
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#define DISP_REG_OVL_RDMA_GMC(n) (0x00c8 + 0x20 * (n))
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#define DISP_REG_OVL_ADDR_MT2701 0x0040
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#define DISP_REG_OVL_ADDR_MT8173 0x0f40
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#define DISP_REG_OVL_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n))
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#define GMC_THRESHOLD_BITS 16
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#define GMC_THRESHOLD_HIGH ((1 << GMC_THRESHOLD_BITS) / 4)
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#define GMC_THRESHOLD_LOW ((1 << GMC_THRESHOLD_BITS) / 8)
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#define OVL_CON_BYTE_SWAP BIT(24)
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#define OVL_CON_MTX_YUV_TO_RGB (6 << 16)
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#define OVL_CON_CLRFMT_RGB (1 << 12)
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#define OVL_CON_CLRFMT_RGBA8888 (2 << 12)
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#define OVL_CON_CLRFMT_ARGB8888 (3 << 12)
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#define OVL_CON_CLRFMT_UYVY (4 << 12)
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#define OVL_CON_CLRFMT_YUYV (5 << 12)
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#define OVL_CON_CLRFMT_RGB565(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
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0 : OVL_CON_CLRFMT_RGB)
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#define OVL_CON_CLRFMT_RGB888(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
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OVL_CON_CLRFMT_RGB : 0)
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#define OVL_CON_AEN BIT(8)
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#define OVL_CON_ALPHA 0xff
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#define OVL_CON_VIRT_FLIP BIT(9)
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#define OVL_CON_HORZ_FLIP BIT(10)
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struct mtk_disp_ovl_data {
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unsigned int addr;
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unsigned int gmc_bits;
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unsigned int layer_nr;
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bool fmt_rgb565_is_0;
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};
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/**
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* struct mtk_disp_ovl - DISP_OVL driver structure
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* @ddp_comp - structure containing type enum and hardware resources
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* @crtc - associated crtc to report vblank events to
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*/
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struct mtk_disp_ovl {
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struct mtk_ddp_comp ddp_comp;
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struct drm_crtc *crtc;
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const struct mtk_disp_ovl_data *data;
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};
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static inline struct mtk_disp_ovl *comp_to_ovl(struct mtk_ddp_comp *comp)
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{
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return container_of(comp, struct mtk_disp_ovl, ddp_comp);
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}
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static irqreturn_t mtk_disp_ovl_irq_handler(int irq, void *dev_id)
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{
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struct mtk_disp_ovl *priv = dev_id;
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struct mtk_ddp_comp *ovl = &priv->ddp_comp;
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/* Clear frame completion interrupt */
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writel(0x0, ovl->regs + DISP_REG_OVL_INTSTA);
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if (!priv->crtc)
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return IRQ_NONE;
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mtk_crtc_ddp_irq(priv->crtc, ovl);
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return IRQ_HANDLED;
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}
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static void mtk_ovl_enable_vblank(struct mtk_ddp_comp *comp,
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struct drm_crtc *crtc)
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{
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struct mtk_disp_ovl *ovl = comp_to_ovl(comp);
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ovl->crtc = crtc;
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writel(0x0, comp->regs + DISP_REG_OVL_INTSTA);
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writel_relaxed(OVL_FME_CPL_INT, comp->regs + DISP_REG_OVL_INTEN);
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}
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static void mtk_ovl_disable_vblank(struct mtk_ddp_comp *comp)
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{
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struct mtk_disp_ovl *ovl = comp_to_ovl(comp);
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ovl->crtc = NULL;
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writel_relaxed(0x0, comp->regs + DISP_REG_OVL_INTEN);
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}
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static void mtk_ovl_start(struct mtk_ddp_comp *comp)
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{
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writel_relaxed(0x1, comp->regs + DISP_REG_OVL_EN);
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}
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static void mtk_ovl_stop(struct mtk_ddp_comp *comp)
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{
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writel_relaxed(0x0, comp->regs + DISP_REG_OVL_EN);
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}
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static void mtk_ovl_config(struct mtk_ddp_comp *comp, unsigned int w,
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unsigned int h, unsigned int vrefresh,
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unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
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{
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if (w != 0 && h != 0)
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mtk_ddp_write_relaxed(cmdq_pkt, h << 16 | w, comp,
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DISP_REG_OVL_ROI_SIZE);
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mtk_ddp_write_relaxed(cmdq_pkt, 0x0, comp, DISP_REG_OVL_ROI_BGCLR);
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mtk_ddp_write(cmdq_pkt, 0x1, comp, DISP_REG_OVL_RST);
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mtk_ddp_write(cmdq_pkt, 0x0, comp, DISP_REG_OVL_RST);
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}
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static unsigned int mtk_ovl_layer_nr(struct mtk_ddp_comp *comp)
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{
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struct mtk_disp_ovl *ovl = comp_to_ovl(comp);
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return ovl->data->layer_nr;
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}
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static unsigned int mtk_ovl_supported_rotations(struct mtk_ddp_comp *comp)
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{
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return DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
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DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
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}
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static int mtk_ovl_layer_check(struct mtk_ddp_comp *comp, unsigned int idx,
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struct mtk_plane_state *mtk_state)
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{
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struct drm_plane_state *state = &mtk_state->base;
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unsigned int rotation = 0;
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rotation = drm_rotation_simplify(state->rotation,
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DRM_MODE_ROTATE_0 |
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DRM_MODE_REFLECT_X |
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DRM_MODE_REFLECT_Y);
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rotation &= ~DRM_MODE_ROTATE_0;
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/* We can only do reflection, not rotation */
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if ((rotation & DRM_MODE_ROTATE_MASK) != 0)
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return -EINVAL;
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/*
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* TODO: Rotating/reflecting YUV buffers is not supported at this time.
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* Only RGB[AX] variants are supported.
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*/
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if (state->fb->format->is_yuv && rotation != 0)
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return -EINVAL;
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state->rotation = rotation;
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return 0;
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}
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static void mtk_ovl_layer_on(struct mtk_ddp_comp *comp, unsigned int idx,
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struct cmdq_pkt *cmdq_pkt)
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{
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unsigned int gmc_thrshd_l;
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unsigned int gmc_thrshd_h;
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unsigned int gmc_value;
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struct mtk_disp_ovl *ovl = comp_to_ovl(comp);
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mtk_ddp_write(cmdq_pkt, 0x1, comp,
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DISP_REG_OVL_RDMA_CTRL(idx));
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gmc_thrshd_l = GMC_THRESHOLD_LOW >>
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(GMC_THRESHOLD_BITS - ovl->data->gmc_bits);
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gmc_thrshd_h = GMC_THRESHOLD_HIGH >>
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(GMC_THRESHOLD_BITS - ovl->data->gmc_bits);
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if (ovl->data->gmc_bits == 10)
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gmc_value = gmc_thrshd_h | gmc_thrshd_h << 16;
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else
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gmc_value = gmc_thrshd_l | gmc_thrshd_l << 8 |
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gmc_thrshd_h << 16 | gmc_thrshd_h << 24;
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mtk_ddp_write(cmdq_pkt, gmc_value,
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comp, DISP_REG_OVL_RDMA_GMC(idx));
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mtk_ddp_write_mask(cmdq_pkt, BIT(idx), comp,
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DISP_REG_OVL_SRC_CON, BIT(idx));
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}
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static void mtk_ovl_layer_off(struct mtk_ddp_comp *comp, unsigned int idx,
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struct cmdq_pkt *cmdq_pkt)
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{
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mtk_ddp_write_mask(cmdq_pkt, 0, comp,
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DISP_REG_OVL_SRC_CON, BIT(idx));
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mtk_ddp_write(cmdq_pkt, 0, comp,
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DISP_REG_OVL_RDMA_CTRL(idx));
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}
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static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt)
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{
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/* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX"
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* is defined in mediatek HW data sheet.
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* The alphabet order in XXX is no relation to data
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* arrangement in memory.
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*/
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switch (fmt) {
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default:
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case DRM_FORMAT_RGB565:
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return OVL_CON_CLRFMT_RGB565(ovl);
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case DRM_FORMAT_BGR565:
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return OVL_CON_CLRFMT_RGB565(ovl) | OVL_CON_BYTE_SWAP;
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case DRM_FORMAT_RGB888:
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return OVL_CON_CLRFMT_RGB888(ovl);
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case DRM_FORMAT_BGR888:
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return OVL_CON_CLRFMT_RGB888(ovl) | OVL_CON_BYTE_SWAP;
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case DRM_FORMAT_RGBX8888:
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case DRM_FORMAT_RGBA8888:
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return OVL_CON_CLRFMT_ARGB8888;
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case DRM_FORMAT_BGRX8888:
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case DRM_FORMAT_BGRA8888:
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return OVL_CON_CLRFMT_ARGB8888 | OVL_CON_BYTE_SWAP;
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case DRM_FORMAT_XRGB8888:
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case DRM_FORMAT_ARGB8888:
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return OVL_CON_CLRFMT_RGBA8888;
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case DRM_FORMAT_XBGR8888:
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case DRM_FORMAT_ABGR8888:
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return OVL_CON_CLRFMT_RGBA8888 | OVL_CON_BYTE_SWAP;
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case DRM_FORMAT_UYVY:
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return OVL_CON_CLRFMT_UYVY | OVL_CON_MTX_YUV_TO_RGB;
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case DRM_FORMAT_YUYV:
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return OVL_CON_CLRFMT_YUYV | OVL_CON_MTX_YUV_TO_RGB;
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}
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}
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static void mtk_ovl_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
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struct mtk_plane_state *state,
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struct cmdq_pkt *cmdq_pkt)
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{
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struct mtk_disp_ovl *ovl = comp_to_ovl(comp);
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struct mtk_plane_pending_state *pending = &state->pending;
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unsigned int addr = pending->addr;
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unsigned int pitch = pending->pitch & 0xffff;
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unsigned int fmt = pending->format;
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unsigned int offset = (pending->y << 16) | pending->x;
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unsigned int src_size = (pending->height << 16) | pending->width;
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unsigned int con;
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if (!pending->enable) {
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mtk_ovl_layer_off(comp, idx, cmdq_pkt);
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return;
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}
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con = ovl_fmt_convert(ovl, fmt);
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if (state->base.fb->format->has_alpha)
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con |= OVL_CON_AEN | OVL_CON_ALPHA;
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if (pending->rotation & DRM_MODE_REFLECT_Y) {
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con |= OVL_CON_VIRT_FLIP;
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addr += (pending->height - 1) * pending->pitch;
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}
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if (pending->rotation & DRM_MODE_REFLECT_X) {
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con |= OVL_CON_HORZ_FLIP;
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addr += pending->pitch - 1;
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}
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mtk_ddp_write_relaxed(cmdq_pkt, con, comp,
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DISP_REG_OVL_CON(idx));
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mtk_ddp_write_relaxed(cmdq_pkt, pitch, comp,
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DISP_REG_OVL_PITCH(idx));
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mtk_ddp_write_relaxed(cmdq_pkt, src_size, comp,
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DISP_REG_OVL_SRC_SIZE(idx));
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mtk_ddp_write_relaxed(cmdq_pkt, offset, comp,
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DISP_REG_OVL_OFFSET(idx));
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mtk_ddp_write_relaxed(cmdq_pkt, addr, comp,
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DISP_REG_OVL_ADDR(ovl, idx));
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mtk_ovl_layer_on(comp, idx, cmdq_pkt);
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}
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static void mtk_ovl_bgclr_in_on(struct mtk_ddp_comp *comp)
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{
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unsigned int reg;
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reg = readl(comp->regs + DISP_REG_OVL_DATAPATH_CON);
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reg = reg | OVL_BGCLR_SEL_IN;
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writel(reg, comp->regs + DISP_REG_OVL_DATAPATH_CON);
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}
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static void mtk_ovl_bgclr_in_off(struct mtk_ddp_comp *comp)
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{
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unsigned int reg;
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reg = readl(comp->regs + DISP_REG_OVL_DATAPATH_CON);
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reg = reg & ~OVL_BGCLR_SEL_IN;
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writel(reg, comp->regs + DISP_REG_OVL_DATAPATH_CON);
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}
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static const struct mtk_ddp_comp_funcs mtk_disp_ovl_funcs = {
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.config = mtk_ovl_config,
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.start = mtk_ovl_start,
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.stop = mtk_ovl_stop,
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.enable_vblank = mtk_ovl_enable_vblank,
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.disable_vblank = mtk_ovl_disable_vblank,
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.supported_rotations = mtk_ovl_supported_rotations,
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.layer_nr = mtk_ovl_layer_nr,
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.layer_check = mtk_ovl_layer_check,
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.layer_config = mtk_ovl_layer_config,
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.bgclr_in_on = mtk_ovl_bgclr_in_on,
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.bgclr_in_off = mtk_ovl_bgclr_in_off,
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};
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static int mtk_disp_ovl_bind(struct device *dev, struct device *master,
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void *data)
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{
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struct mtk_disp_ovl *priv = dev_get_drvdata(dev);
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struct drm_device *drm_dev = data;
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int ret;
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ret = mtk_ddp_comp_register(drm_dev, &priv->ddp_comp);
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if (ret < 0) {
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dev_err(dev, "Failed to register component %pOF: %d\n",
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dev->of_node, ret);
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return ret;
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}
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return 0;
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}
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static void mtk_disp_ovl_unbind(struct device *dev, struct device *master,
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void *data)
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{
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struct mtk_disp_ovl *priv = dev_get_drvdata(dev);
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struct drm_device *drm_dev = data;
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mtk_ddp_comp_unregister(drm_dev, &priv->ddp_comp);
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}
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static const struct component_ops mtk_disp_ovl_component_ops = {
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.bind = mtk_disp_ovl_bind,
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.unbind = mtk_disp_ovl_unbind,
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};
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static int mtk_disp_ovl_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct mtk_disp_ovl *priv;
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int comp_id;
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int irq;
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int ret;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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irq = platform_get_irq(pdev, 0);
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if (irq < 0)
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return irq;
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priv->data = of_device_get_match_data(dev);
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comp_id = mtk_ddp_comp_get_id(dev->of_node,
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priv->data->layer_nr == 4 ?
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MTK_DISP_OVL :
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MTK_DISP_OVL_2L);
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if (comp_id < 0) {
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dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
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return comp_id;
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}
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ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
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&mtk_disp_ovl_funcs);
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if (ret) {
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if (ret != -EPROBE_DEFER)
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dev_err(dev, "Failed to initialize component: %d\n",
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ret);
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return ret;
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}
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platform_set_drvdata(pdev, priv);
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ret = devm_request_irq(dev, irq, mtk_disp_ovl_irq_handler,
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IRQF_TRIGGER_NONE, dev_name(dev), priv);
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if (ret < 0) {
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dev_err(dev, "Failed to request irq %d: %d\n", irq, ret);
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return ret;
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}
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ret = component_add(dev, &mtk_disp_ovl_component_ops);
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if (ret)
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dev_err(dev, "Failed to add component: %d\n", ret);
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return ret;
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}
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static int mtk_disp_ovl_remove(struct platform_device *pdev)
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{
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component_del(&pdev->dev, &mtk_disp_ovl_component_ops);
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return 0;
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}
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static const struct mtk_disp_ovl_data mt2701_ovl_driver_data = {
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.addr = DISP_REG_OVL_ADDR_MT2701,
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.gmc_bits = 8,
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.layer_nr = 4,
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.fmt_rgb565_is_0 = false,
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};
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static const struct mtk_disp_ovl_data mt8173_ovl_driver_data = {
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.addr = DISP_REG_OVL_ADDR_MT8173,
|
|
.gmc_bits = 8,
|
|
.layer_nr = 4,
|
|
.fmt_rgb565_is_0 = true,
|
|
};
|
|
|
|
static const struct of_device_id mtk_disp_ovl_driver_dt_match[] = {
|
|
{ .compatible = "mediatek,mt2701-disp-ovl",
|
|
.data = &mt2701_ovl_driver_data},
|
|
{ .compatible = "mediatek,mt8173-disp-ovl",
|
|
.data = &mt8173_ovl_driver_data},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, mtk_disp_ovl_driver_dt_match);
|
|
|
|
struct platform_driver mtk_disp_ovl_driver = {
|
|
.probe = mtk_disp_ovl_probe,
|
|
.remove = mtk_disp_ovl_remove,
|
|
.driver = {
|
|
.name = "mediatek-disp-ovl",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = mtk_disp_ovl_driver_dt_match,
|
|
},
|
|
};
|