| /* |
| * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd |
| * Author:Mark Yao <mark.yao@rock-chips.com> |
| * |
| * This software is licensed under the terms of the GNU General Public |
| * License version 2, as published by the Free Software Foundation, and |
| * may be copied, distributed, and modified under those terms. |
| * |
| * 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 <drm/drm.h> |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/drm_plane_helper.h> |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/clk.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/component.h> |
| |
| #include <linux/reset.h> |
| #include <linux/delay.h> |
| |
| #include "rockchip_drm_drv.h" |
| #include "rockchip_drm_gem.h" |
| #include "rockchip_drm_fb.h" |
| #include "rockchip_drm_vop.h" |
| |
| #define VOP_REG(off, _mask, s) \ |
| {.offset = off, \ |
| .mask = _mask, \ |
| .shift = s,} |
| |
| #define __REG_SET_RELAXED(x, off, mask, shift, v) \ |
| vop_mask_write_relaxed(x, off, (mask) << shift, (v) << shift) |
| #define __REG_SET_NORMAL(x, off, mask, shift, v) \ |
| vop_mask_write(x, off, (mask) << shift, (v) << shift) |
| |
| #define REG_SET(x, base, reg, v, mode) \ |
| __REG_SET_##mode(x, base + reg.offset, reg.mask, reg.shift, v) |
| |
| #define VOP_WIN_SET(x, win, name, v) \ |
| REG_SET(x, win->base, win->phy->name, v, RELAXED) |
| #define VOP_CTRL_SET(x, name, v) \ |
| REG_SET(x, 0, (x)->data->ctrl->name, v, NORMAL) |
| |
| #define VOP_WIN_GET(x, win, name) \ |
| vop_read_reg(x, win->base, &win->phy->name) |
| |
| #define VOP_WIN_GET_YRGBADDR(vop, win) \ |
| vop_readl(vop, win->base + win->phy->yrgb_mst.offset) |
| |
| #define to_vop(x) container_of(x, struct vop, crtc) |
| #define to_vop_win(x) container_of(x, struct vop_win, base) |
| |
| struct vop_win_state { |
| struct list_head head; |
| struct drm_framebuffer *fb; |
| dma_addr_t yrgb_mst; |
| struct drm_pending_vblank_event *event; |
| }; |
| |
| struct vop_win { |
| struct drm_plane base; |
| const struct vop_win_data *data; |
| struct vop *vop; |
| |
| struct list_head pending; |
| struct vop_win_state *active; |
| }; |
| |
| struct vop { |
| struct drm_crtc crtc; |
| struct device *dev; |
| struct drm_device *drm_dev; |
| bool is_enabled; |
| |
| int connector_type; |
| int connector_out_mode; |
| |
| /* mutex vsync_ work */ |
| struct mutex vsync_mutex; |
| bool vsync_work_pending; |
| struct completion dsp_hold_completion; |
| |
| const struct vop_data *data; |
| |
| uint32_t *regsbak; |
| void __iomem *regs; |
| |
| /* physical map length of vop register */ |
| uint32_t len; |
| |
| /* one time only one process allowed to config the register */ |
| spinlock_t reg_lock; |
| /* lock vop irq reg */ |
| spinlock_t irq_lock; |
| |
| unsigned int irq; |
| |
| /* vop AHP clk */ |
| struct clk *hclk; |
| /* vop dclk */ |
| struct clk *dclk; |
| /* vop share memory frequency */ |
| struct clk *aclk; |
| |
| /* vop dclk reset */ |
| struct reset_control *dclk_rst; |
| |
| int pipe; |
| |
| struct vop_win win[]; |
| }; |
| |
| enum vop_data_format { |
| VOP_FMT_ARGB8888 = 0, |
| VOP_FMT_RGB888, |
| VOP_FMT_RGB565, |
| VOP_FMT_YUV420SP = 4, |
| VOP_FMT_YUV422SP, |
| VOP_FMT_YUV444SP, |
| }; |
| |
| struct vop_reg_data { |
| uint32_t offset; |
| uint32_t value; |
| }; |
| |
| struct vop_reg { |
| uint32_t offset; |
| uint32_t shift; |
| uint32_t mask; |
| }; |
| |
| struct vop_ctrl { |
| struct vop_reg standby; |
| struct vop_reg data_blank; |
| struct vop_reg gate_en; |
| struct vop_reg mmu_en; |
| struct vop_reg rgb_en; |
| struct vop_reg edp_en; |
| struct vop_reg hdmi_en; |
| struct vop_reg mipi_en; |
| struct vop_reg out_mode; |
| struct vop_reg dither_down; |
| struct vop_reg dither_up; |
| struct vop_reg pin_pol; |
| |
| struct vop_reg htotal_pw; |
| struct vop_reg hact_st_end; |
| struct vop_reg vtotal_pw; |
| struct vop_reg vact_st_end; |
| struct vop_reg hpost_st_end; |
| struct vop_reg vpost_st_end; |
| }; |
| |
| struct vop_win_phy { |
| const uint32_t *data_formats; |
| uint32_t nformats; |
| |
| struct vop_reg enable; |
| struct vop_reg format; |
| struct vop_reg act_info; |
| struct vop_reg dsp_info; |
| struct vop_reg dsp_st; |
| struct vop_reg yrgb_mst; |
| struct vop_reg uv_mst; |
| struct vop_reg yrgb_vir; |
| struct vop_reg uv_vir; |
| |
| struct vop_reg dst_alpha_ctl; |
| struct vop_reg src_alpha_ctl; |
| }; |
| |
| struct vop_win_data { |
| uint32_t base; |
| const struct vop_win_phy *phy; |
| enum drm_plane_type type; |
| }; |
| |
| struct vop_data { |
| const struct vop_reg_data *init_table; |
| unsigned int table_size; |
| const struct vop_ctrl *ctrl; |
| const struct vop_win_data *win; |
| unsigned int win_size; |
| }; |
| |
| static const uint32_t formats_01[] = { |
| DRM_FORMAT_XRGB8888, |
| DRM_FORMAT_ARGB8888, |
| DRM_FORMAT_RGB888, |
| DRM_FORMAT_RGB565, |
| DRM_FORMAT_NV12, |
| DRM_FORMAT_NV16, |
| DRM_FORMAT_NV24, |
| }; |
| |
| static const uint32_t formats_234[] = { |
| DRM_FORMAT_XRGB8888, |
| DRM_FORMAT_ARGB8888, |
| DRM_FORMAT_RGB888, |
| DRM_FORMAT_RGB565, |
| }; |
| |
| static const struct vop_win_phy win01_data = { |
| .data_formats = formats_01, |
| .nformats = ARRAY_SIZE(formats_01), |
| .enable = VOP_REG(WIN0_CTRL0, 0x1, 0), |
| .format = VOP_REG(WIN0_CTRL0, 0x7, 1), |
| .act_info = VOP_REG(WIN0_ACT_INFO, 0x1fff1fff, 0), |
| .dsp_info = VOP_REG(WIN0_DSP_INFO, 0x0fff0fff, 0), |
| .dsp_st = VOP_REG(WIN0_DSP_ST, 0x1fff1fff, 0), |
| .yrgb_mst = VOP_REG(WIN0_YRGB_MST, 0xffffffff, 0), |
| .uv_mst = VOP_REG(WIN0_CBR_MST, 0xffffffff, 0), |
| .yrgb_vir = VOP_REG(WIN0_VIR, 0x3fff, 0), |
| .uv_vir = VOP_REG(WIN0_VIR, 0x3fff, 16), |
| .src_alpha_ctl = VOP_REG(WIN0_SRC_ALPHA_CTRL, 0xff, 0), |
| .dst_alpha_ctl = VOP_REG(WIN0_DST_ALPHA_CTRL, 0xff, 0), |
| }; |
| |
| static const struct vop_win_phy win23_data = { |
| .data_formats = formats_234, |
| .nformats = ARRAY_SIZE(formats_234), |
| .enable = VOP_REG(WIN2_CTRL0, 0x1, 0), |
| .format = VOP_REG(WIN2_CTRL0, 0x7, 1), |
| .dsp_info = VOP_REG(WIN2_DSP_INFO0, 0x0fff0fff, 0), |
| .dsp_st = VOP_REG(WIN2_DSP_ST0, 0x1fff1fff, 0), |
| .yrgb_mst = VOP_REG(WIN2_MST0, 0xffffffff, 0), |
| .yrgb_vir = VOP_REG(WIN2_VIR0_1, 0x1fff, 0), |
| .src_alpha_ctl = VOP_REG(WIN2_SRC_ALPHA_CTRL, 0xff, 0), |
| .dst_alpha_ctl = VOP_REG(WIN2_DST_ALPHA_CTRL, 0xff, 0), |
| }; |
| |
| static const struct vop_win_phy cursor_data = { |
| .data_formats = formats_234, |
| .nformats = ARRAY_SIZE(formats_234), |
| .enable = VOP_REG(HWC_CTRL0, 0x1, 0), |
| .format = VOP_REG(HWC_CTRL0, 0x7, 1), |
| .dsp_st = VOP_REG(HWC_DSP_ST, 0x1fff1fff, 0), |
| .yrgb_mst = VOP_REG(HWC_MST, 0xffffffff, 0), |
| }; |
| |
| static const struct vop_ctrl ctrl_data = { |
| .standby = VOP_REG(SYS_CTRL, 0x1, 22), |
| .gate_en = VOP_REG(SYS_CTRL, 0x1, 23), |
| .mmu_en = VOP_REG(SYS_CTRL, 0x1, 20), |
| .rgb_en = VOP_REG(SYS_CTRL, 0x1, 12), |
| .hdmi_en = VOP_REG(SYS_CTRL, 0x1, 13), |
| .edp_en = VOP_REG(SYS_CTRL, 0x1, 14), |
| .mipi_en = VOP_REG(SYS_CTRL, 0x1, 15), |
| .dither_down = VOP_REG(DSP_CTRL1, 0xf, 1), |
| .dither_up = VOP_REG(DSP_CTRL1, 0x1, 6), |
| .data_blank = VOP_REG(DSP_CTRL0, 0x1, 19), |
| .out_mode = VOP_REG(DSP_CTRL0, 0xf, 0), |
| .pin_pol = VOP_REG(DSP_CTRL0, 0xf, 4), |
| .htotal_pw = VOP_REG(DSP_HTOTAL_HS_END, 0x1fff1fff, 0), |
| .hact_st_end = VOP_REG(DSP_HACT_ST_END, 0x1fff1fff, 0), |
| .vtotal_pw = VOP_REG(DSP_VTOTAL_VS_END, 0x1fff1fff, 0), |
| .vact_st_end = VOP_REG(DSP_VACT_ST_END, 0x1fff1fff, 0), |
| .hpost_st_end = VOP_REG(POST_DSP_HACT_INFO, 0x1fff1fff, 0), |
| .vpost_st_end = VOP_REG(POST_DSP_VACT_INFO, 0x1fff1fff, 0), |
| }; |
| |
| static const struct vop_reg_data vop_init_reg_table[] = { |
| {SYS_CTRL, 0x00c00000}, |
| {DSP_CTRL0, 0x00000000}, |
| {WIN0_CTRL0, 0x00000080}, |
| {WIN1_CTRL0, 0x00000080}, |
| }; |
| |
| /* |
| * Note: rk3288 has a dedicated 'cursor' window, however, that window requires |
| * special support to get alpha blending working. For now, just use overlay |
| * window 1 for the drm cursor. |
| */ |
| static const struct vop_win_data rk3288_vop_win_data[] = { |
| { .base = 0x00, .phy = &win01_data, .type = DRM_PLANE_TYPE_PRIMARY }, |
| { .base = 0x40, .phy = &win01_data, .type = DRM_PLANE_TYPE_CURSOR }, |
| { .base = 0x00, .phy = &win23_data, .type = DRM_PLANE_TYPE_OVERLAY }, |
| { .base = 0x50, .phy = &win23_data, .type = DRM_PLANE_TYPE_OVERLAY }, |
| { .base = 0x00, .phy = &cursor_data, .type = DRM_PLANE_TYPE_OVERLAY }, |
| }; |
| |
| static const struct vop_data rk3288_vop = { |
| .init_table = vop_init_reg_table, |
| .table_size = ARRAY_SIZE(vop_init_reg_table), |
| .ctrl = &ctrl_data, |
| .win = rk3288_vop_win_data, |
| .win_size = ARRAY_SIZE(rk3288_vop_win_data), |
| }; |
| |
| static const struct of_device_id vop_driver_dt_match[] = { |
| { .compatible = "rockchip,rk3288-vop", |
| .data = &rk3288_vop }, |
| {}, |
| }; |
| |
| static inline void vop_writel(struct vop *vop, uint32_t offset, uint32_t v) |
| { |
| writel(v, vop->regs + offset); |
| vop->regsbak[offset >> 2] = v; |
| } |
| |
| static inline uint32_t vop_readl(struct vop *vop, uint32_t offset) |
| { |
| return readl(vop->regs + offset); |
| } |
| |
| static inline uint32_t vop_read_reg(struct vop *vop, uint32_t base, |
| const struct vop_reg *reg) |
| { |
| return (vop_readl(vop, base + reg->offset) >> reg->shift) & reg->mask; |
| } |
| |
| static inline void vop_cfg_done(struct vop *vop) |
| { |
| writel(0x01, vop->regs + REG_CFG_DONE); |
| } |
| |
| static inline void vop_mask_write(struct vop *vop, uint32_t offset, |
| uint32_t mask, uint32_t v) |
| { |
| if (mask) { |
| uint32_t cached_val = vop->regsbak[offset >> 2]; |
| |
| cached_val = (cached_val & ~mask) | v; |
| writel(cached_val, vop->regs + offset); |
| vop->regsbak[offset >> 2] = cached_val; |
| } |
| } |
| |
| static inline void vop_mask_write_relaxed(struct vop *vop, uint32_t offset, |
| uint32_t mask, uint32_t v) |
| { |
| if (mask) { |
| uint32_t cached_val = vop->regsbak[offset >> 2]; |
| |
| cached_val = (cached_val & ~mask) | v; |
| writel_relaxed(cached_val, vop->regs + offset); |
| vop->regsbak[offset >> 2] = cached_val; |
| } |
| } |
| |
| static enum vop_data_format vop_convert_format(uint32_t format) |
| { |
| switch (format) { |
| case DRM_FORMAT_XRGB8888: |
| case DRM_FORMAT_ARGB8888: |
| return VOP_FMT_ARGB8888; |
| case DRM_FORMAT_RGB888: |
| return VOP_FMT_RGB888; |
| case DRM_FORMAT_RGB565: |
| return VOP_FMT_RGB565; |
| case DRM_FORMAT_NV12: |
| return VOP_FMT_YUV420SP; |
| case DRM_FORMAT_NV16: |
| return VOP_FMT_YUV422SP; |
| case DRM_FORMAT_NV24: |
| return VOP_FMT_YUV444SP; |
| default: |
| DRM_ERROR("unsupport format[%08x]\n", format); |
| return -EINVAL; |
| } |
| } |
| |
| static bool is_alpha_support(uint32_t format) |
| { |
| switch (format) { |
| case DRM_FORMAT_ARGB8888: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static void vop_dsp_hold_valid_irq_enable(struct vop *vop) |
| { |
| unsigned long flags; |
| |
| if (WARN_ON(!vop->is_enabled)) |
| return; |
| |
| spin_lock_irqsave(&vop->irq_lock, flags); |
| |
| vop_mask_write(vop, INTR_CTRL0, DSP_HOLD_VALID_INTR_MASK, |
| DSP_HOLD_VALID_INTR_EN(1)); |
| |
| spin_unlock_irqrestore(&vop->irq_lock, flags); |
| } |
| |
| static void vop_dsp_hold_valid_irq_disable(struct vop *vop) |
| { |
| unsigned long flags; |
| |
| if (WARN_ON(!vop->is_enabled)) |
| return; |
| |
| spin_lock_irqsave(&vop->irq_lock, flags); |
| |
| vop_mask_write(vop, INTR_CTRL0, DSP_HOLD_VALID_INTR_MASK, |
| DSP_HOLD_VALID_INTR_EN(0)); |
| |
| spin_unlock_irqrestore(&vop->irq_lock, flags); |
| } |
| |
| static void vop_enable(struct drm_crtc *crtc) |
| { |
| struct vop *vop = to_vop(crtc); |
| int ret; |
| |
| if (vop->is_enabled) |
| return; |
| |
| ret = pm_runtime_get_sync(vop->dev); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to get pm runtime: %d\n", ret); |
| return; |
| } |
| |
| ret = clk_enable(vop->hclk); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to enable hclk - %d\n", ret); |
| return; |
| } |
| |
| ret = clk_enable(vop->dclk); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to enable dclk - %d\n", ret); |
| goto err_disable_hclk; |
| } |
| |
| ret = clk_enable(vop->aclk); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to enable aclk - %d\n", ret); |
| goto err_disable_dclk; |
| } |
| |
| /* |
| * Slave iommu shares power, irq and clock with vop. It was associated |
| * automatically with this master device via common driver code. |
| * Now that we have enabled the clock we attach it to the shared drm |
| * mapping. |
| */ |
| ret = rockchip_drm_dma_attach_device(vop->drm_dev, vop->dev); |
| if (ret) { |
| dev_err(vop->dev, "failed to attach dma mapping, %d\n", ret); |
| goto err_disable_aclk; |
| } |
| |
| /* |
| * At here, vop clock & iommu is enable, R/W vop regs would be safe. |
| */ |
| vop->is_enabled = true; |
| |
| spin_lock(&vop->reg_lock); |
| |
| VOP_CTRL_SET(vop, standby, 0); |
| |
| spin_unlock(&vop->reg_lock); |
| |
| enable_irq(vop->irq); |
| |
| drm_vblank_on(vop->drm_dev, vop->pipe); |
| |
| return; |
| |
| err_disable_aclk: |
| clk_disable(vop->aclk); |
| err_disable_dclk: |
| clk_disable(vop->dclk); |
| err_disable_hclk: |
| clk_disable(vop->hclk); |
| } |
| |
| static void vop_disable(struct drm_crtc *crtc) |
| { |
| struct vop *vop = to_vop(crtc); |
| |
| if (!vop->is_enabled) |
| return; |
| |
| drm_vblank_off(crtc->dev, vop->pipe); |
| |
| /* |
| * Vop standby will take effect at end of current frame, |
| * if dsp hold valid irq happen, it means standby complete. |
| * |
| * we must wait standby complete when we want to disable aclk, |
| * if not, memory bus maybe dead. |
| */ |
| reinit_completion(&vop->dsp_hold_completion); |
| vop_dsp_hold_valid_irq_enable(vop); |
| |
| spin_lock(&vop->reg_lock); |
| |
| VOP_CTRL_SET(vop, standby, 1); |
| |
| spin_unlock(&vop->reg_lock); |
| |
| wait_for_completion(&vop->dsp_hold_completion); |
| |
| vop_dsp_hold_valid_irq_disable(vop); |
| |
| disable_irq(vop->irq); |
| |
| vop->is_enabled = false; |
| |
| /* |
| * vop standby complete, so iommu detach is safe. |
| */ |
| rockchip_drm_dma_detach_device(vop->drm_dev, vop->dev); |
| |
| clk_disable(vop->dclk); |
| clk_disable(vop->aclk); |
| clk_disable(vop->hclk); |
| pm_runtime_put(vop->dev); |
| } |
| |
| /* |
| * Caller must hold vsync_mutex. |
| */ |
| static struct drm_framebuffer *vop_win_last_pending_fb(struct vop_win *vop_win) |
| { |
| struct vop_win_state *last; |
| struct vop_win_state *active = vop_win->active; |
| |
| if (list_empty(&vop_win->pending)) |
| return active ? active->fb : NULL; |
| |
| last = list_last_entry(&vop_win->pending, struct vop_win_state, head); |
| return last ? last->fb : NULL; |
| } |
| |
| /* |
| * Caller must hold vsync_mutex. |
| */ |
| static int vop_win_queue_fb(struct vop_win *vop_win, |
| struct drm_framebuffer *fb, dma_addr_t yrgb_mst, |
| struct drm_pending_vblank_event *event) |
| { |
| struct vop_win_state *state; |
| |
| state = kzalloc(sizeof(*state), GFP_KERNEL); |
| if (!state) |
| return -ENOMEM; |
| |
| state->fb = fb; |
| state->yrgb_mst = yrgb_mst; |
| state->event = event; |
| |
| list_add_tail(&state->head, &vop_win->pending); |
| |
| return 0; |
| } |
| |
| static int vop_update_plane_event(struct drm_plane *plane, |
| struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, int crtc_x, |
| int crtc_y, unsigned int crtc_w, |
| unsigned int crtc_h, uint32_t src_x, |
| uint32_t src_y, uint32_t src_w, |
| uint32_t src_h, |
| struct drm_pending_vblank_event *event) |
| { |
| struct vop_win *vop_win = to_vop_win(plane); |
| const struct vop_win_data *win = vop_win->data; |
| struct vop *vop = to_vop(crtc); |
| struct drm_gem_object *obj; |
| struct rockchip_gem_object *rk_obj; |
| unsigned long offset; |
| unsigned int actual_w; |
| unsigned int actual_h; |
| unsigned int dsp_stx; |
| unsigned int dsp_sty; |
| unsigned int y_vir_stride; |
| dma_addr_t yrgb_mst; |
| enum vop_data_format format; |
| uint32_t val; |
| bool is_alpha; |
| bool visible; |
| int ret; |
| struct drm_rect dest = { |
| .x1 = crtc_x, |
| .y1 = crtc_y, |
| .x2 = crtc_x + crtc_w, |
| .y2 = crtc_y + crtc_h, |
| }; |
| struct drm_rect src = { |
| /* 16.16 fixed point */ |
| .x1 = src_x, |
| .y1 = src_y, |
| .x2 = src_x + src_w, |
| .y2 = src_y + src_h, |
| }; |
| const struct drm_rect clip = { |
| .x2 = crtc->mode.hdisplay, |
| .y2 = crtc->mode.vdisplay, |
| }; |
| bool can_position = plane->type != DRM_PLANE_TYPE_PRIMARY; |
| |
| ret = drm_plane_helper_check_update(plane, crtc, fb, |
| &src, &dest, &clip, |
| DRM_PLANE_HELPER_NO_SCALING, |
| DRM_PLANE_HELPER_NO_SCALING, |
| can_position, false, &visible); |
| if (ret) |
| return ret; |
| |
| if (!visible) |
| return 0; |
| |
| is_alpha = is_alpha_support(fb->pixel_format); |
| format = vop_convert_format(fb->pixel_format); |
| if (format < 0) |
| return format; |
| |
| obj = rockchip_fb_get_gem_obj(fb, 0); |
| if (!obj) { |
| DRM_ERROR("fail to get rockchip gem object from framebuffer\n"); |
| return -EINVAL; |
| } |
| |
| rk_obj = to_rockchip_obj(obj); |
| |
| actual_w = (src.x2 - src.x1) >> 16; |
| actual_h = (src.y2 - src.y1) >> 16; |
| crtc_x = max(0, crtc_x); |
| crtc_y = max(0, crtc_y); |
| |
| dsp_stx = crtc_x + crtc->mode.htotal - crtc->mode.hsync_start; |
| dsp_sty = crtc_y + crtc->mode.vtotal - crtc->mode.vsync_start; |
| |
| offset = (src.x1 >> 16) * (fb->bits_per_pixel >> 3); |
| offset += (src.y1 >> 16) * fb->pitches[0]; |
| yrgb_mst = rk_obj->dma_addr + offset; |
| |
| y_vir_stride = fb->pitches[0] / (fb->bits_per_pixel >> 3); |
| |
| /* |
| * If this plane update changes the plane's framebuffer, (or more |
| * precisely, if this update has a different framebuffer than the last |
| * update), enqueue it so we can track when it completes. |
| * |
| * Only when we discover that this update has completed, can we |
| * unreference any previous framebuffers. |
| */ |
| mutex_lock(&vop->vsync_mutex); |
| if (fb != vop_win_last_pending_fb(vop_win)) { |
| ret = drm_vblank_get(plane->dev, vop->pipe); |
| if (ret) { |
| DRM_ERROR("failed to get vblank, %d\n", ret); |
| mutex_unlock(&vop->vsync_mutex); |
| return ret; |
| } |
| |
| drm_framebuffer_reference(fb); |
| |
| ret = vop_win_queue_fb(vop_win, fb, yrgb_mst, event); |
| if (ret) { |
| drm_vblank_put(plane->dev, vop->pipe); |
| mutex_unlock(&vop->vsync_mutex); |
| return ret; |
| } |
| |
| vop->vsync_work_pending = true; |
| } |
| mutex_unlock(&vop->vsync_mutex); |
| |
| spin_lock(&vop->reg_lock); |
| |
| VOP_WIN_SET(vop, win, format, format); |
| VOP_WIN_SET(vop, win, yrgb_vir, y_vir_stride); |
| VOP_WIN_SET(vop, win, yrgb_mst, yrgb_mst); |
| val = (actual_h - 1) << 16; |
| val |= (actual_w - 1) & 0xffff; |
| VOP_WIN_SET(vop, win, act_info, val); |
| VOP_WIN_SET(vop, win, dsp_info, val); |
| val = (dsp_sty - 1) << 16; |
| val |= (dsp_stx - 1) & 0xffff; |
| VOP_WIN_SET(vop, win, dsp_st, val); |
| |
| if (is_alpha) { |
| VOP_WIN_SET(vop, win, dst_alpha_ctl, |
| DST_FACTOR_M0(ALPHA_SRC_INVERSE)); |
| val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) | |
| SRC_ALPHA_M0(ALPHA_STRAIGHT) | |
| SRC_BLEND_M0(ALPHA_PER_PIX) | |
| SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) | |
| SRC_FACTOR_M0(ALPHA_ONE); |
| VOP_WIN_SET(vop, win, src_alpha_ctl, val); |
| } else { |
| VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0)); |
| } |
| |
| VOP_WIN_SET(vop, win, enable, 1); |
| |
| vop_cfg_done(vop); |
| spin_unlock(&vop->reg_lock); |
| |
| return 0; |
| } |
| |
| static int vop_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, int crtc_x, int crtc_y, |
| unsigned int crtc_w, unsigned int crtc_h, |
| uint32_t src_x, uint32_t src_y, uint32_t src_w, |
| uint32_t src_h) |
| { |
| return vop_update_plane_event(plane, crtc, fb, crtc_x, crtc_y, crtc_w, |
| crtc_h, src_x, src_y, src_w, src_h, |
| NULL); |
| } |
| |
| static int vop_update_primary_plane(struct drm_crtc *crtc, |
| struct drm_pending_vblank_event *event) |
| { |
| unsigned int crtc_w, crtc_h; |
| |
| crtc_w = crtc->primary->fb->width - crtc->x; |
| crtc_h = crtc->primary->fb->height - crtc->y; |
| |
| return vop_update_plane_event(crtc->primary, crtc, crtc->primary->fb, |
| 0, 0, crtc_w, crtc_h, crtc->x << 16, |
| crtc->y << 16, crtc_w << 16, |
| crtc_h << 16, event); |
| } |
| |
| static int vop_disable_plane(struct drm_plane *plane) |
| { |
| struct vop_win *vop_win = to_vop_win(plane); |
| const struct vop_win_data *win = vop_win->data; |
| struct vop *vop; |
| int ret; |
| |
| if (!plane->crtc) |
| return 0; |
| |
| vop = to_vop(plane->crtc); |
| |
| ret = drm_vblank_get(plane->dev, vop->pipe); |
| if (ret) { |
| DRM_ERROR("failed to get vblank, %d\n", ret); |
| return ret; |
| } |
| |
| mutex_lock(&vop->vsync_mutex); |
| |
| ret = vop_win_queue_fb(vop_win, NULL, 0, NULL); |
| if (ret) { |
| drm_vblank_put(plane->dev, vop->pipe); |
| mutex_unlock(&vop->vsync_mutex); |
| return ret; |
| } |
| |
| vop->vsync_work_pending = true; |
| mutex_unlock(&vop->vsync_mutex); |
| |
| spin_lock(&vop->reg_lock); |
| VOP_WIN_SET(vop, win, enable, 0); |
| vop_cfg_done(vop); |
| spin_unlock(&vop->reg_lock); |
| |
| return 0; |
| } |
| |
| static void vop_plane_destroy(struct drm_plane *plane) |
| { |
| vop_disable_plane(plane); |
| drm_plane_cleanup(plane); |
| } |
| |
| static const struct drm_plane_funcs vop_plane_funcs = { |
| .update_plane = vop_update_plane, |
| .disable_plane = vop_disable_plane, |
| .destroy = vop_plane_destroy, |
| }; |
| |
| int rockchip_drm_crtc_mode_config(struct drm_crtc *crtc, |
| int connector_type, |
| int out_mode) |
| { |
| struct vop *vop = to_vop(crtc); |
| |
| vop->connector_type = connector_type; |
| vop->connector_out_mode = out_mode; |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(rockchip_drm_crtc_mode_config); |
| |
| static int vop_crtc_enable_vblank(struct drm_crtc *crtc) |
| { |
| struct vop *vop = to_vop(crtc); |
| unsigned long flags; |
| |
| if (!vop->is_enabled) |
| return -EPERM; |
| |
| spin_lock_irqsave(&vop->irq_lock, flags); |
| |
| vop_mask_write(vop, INTR_CTRL0, FS_INTR_MASK, FS_INTR_EN(1)); |
| |
| spin_unlock_irqrestore(&vop->irq_lock, flags); |
| |
| return 0; |
| } |
| |
| static void vop_crtc_disable_vblank(struct drm_crtc *crtc) |
| { |
| struct vop *vop = to_vop(crtc); |
| unsigned long flags; |
| |
| if (!vop->is_enabled) |
| return; |
| |
| spin_lock_irqsave(&vop->irq_lock, flags); |
| vop_mask_write(vop, INTR_CTRL0, FS_INTR_MASK, FS_INTR_EN(0)); |
| spin_unlock_irqrestore(&vop->irq_lock, flags); |
| } |
| |
| static const struct rockchip_crtc_funcs private_crtc_funcs = { |
| .enable_vblank = vop_crtc_enable_vblank, |
| .disable_vblank = vop_crtc_disable_vblank, |
| }; |
| |
| static void vop_crtc_dpms(struct drm_crtc *crtc, int mode) |
| { |
| DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode); |
| |
| switch (mode) { |
| case DRM_MODE_DPMS_ON: |
| vop_enable(crtc); |
| break; |
| case DRM_MODE_DPMS_STANDBY: |
| case DRM_MODE_DPMS_SUSPEND: |
| case DRM_MODE_DPMS_OFF: |
| vop_disable(crtc); |
| break; |
| default: |
| DRM_DEBUG_KMS("unspecified mode %d\n", mode); |
| break; |
| } |
| } |
| |
| static void vop_crtc_prepare(struct drm_crtc *crtc) |
| { |
| vop_crtc_dpms(crtc, DRM_MODE_DPMS_ON); |
| } |
| |
| static bool vop_crtc_mode_fixup(struct drm_crtc *crtc, |
| const struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| if (adjusted_mode->htotal == 0 || adjusted_mode->vtotal == 0) |
| return false; |
| |
| return true; |
| } |
| |
| static int vop_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, |
| struct drm_framebuffer *old_fb) |
| { |
| int ret; |
| |
| crtc->x = x; |
| crtc->y = y; |
| |
| ret = vop_update_primary_plane(crtc, NULL); |
| if (ret < 0) { |
| DRM_ERROR("fail to update plane\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int vop_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 *fb) |
| { |
| struct vop *vop = to_vop(crtc); |
| u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start; |
| u16 hdisplay = adjusted_mode->hdisplay; |
| u16 htotal = adjusted_mode->htotal; |
| u16 hact_st = adjusted_mode->htotal - adjusted_mode->hsync_start; |
| u16 hact_end = hact_st + hdisplay; |
| u16 vdisplay = adjusted_mode->vdisplay; |
| u16 vtotal = adjusted_mode->vtotal; |
| u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start; |
| u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start; |
| u16 vact_end = vact_st + vdisplay; |
| int ret, ret_clk; |
| uint32_t val; |
| |
| /* |
| * disable dclk to stop frame scan, so that we can safe config mode and |
| * enable iommu. |
| */ |
| clk_disable(vop->dclk); |
| |
| switch (vop->connector_type) { |
| case DRM_MODE_CONNECTOR_LVDS: |
| VOP_CTRL_SET(vop, rgb_en, 1); |
| break; |
| case DRM_MODE_CONNECTOR_eDP: |
| VOP_CTRL_SET(vop, edp_en, 1); |
| break; |
| case DRM_MODE_CONNECTOR_HDMIA: |
| VOP_CTRL_SET(vop, hdmi_en, 1); |
| break; |
| default: |
| DRM_ERROR("unsupport connector_type[%d]\n", |
| vop->connector_type); |
| ret = -EINVAL; |
| goto out; |
| }; |
| VOP_CTRL_SET(vop, out_mode, vop->connector_out_mode); |
| |
| val = 0x8; |
| val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1; |
| val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1); |
| VOP_CTRL_SET(vop, pin_pol, val); |
| |
| VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len); |
| val = hact_st << 16; |
| val |= hact_end; |
| VOP_CTRL_SET(vop, hact_st_end, val); |
| VOP_CTRL_SET(vop, hpost_st_end, val); |
| |
| VOP_CTRL_SET(vop, vtotal_pw, (vtotal << 16) | vsync_len); |
| val = vact_st << 16; |
| val |= vact_end; |
| VOP_CTRL_SET(vop, vact_st_end, val); |
| VOP_CTRL_SET(vop, vpost_st_end, val); |
| |
| ret = vop_crtc_mode_set_base(crtc, x, y, fb); |
| if (ret) |
| goto out; |
| |
| /* |
| * reset dclk, take all mode config affect, so the clk would run in |
| * correct frame. |
| */ |
| reset_control_assert(vop->dclk_rst); |
| usleep_range(10, 20); |
| reset_control_deassert(vop->dclk_rst); |
| |
| clk_set_rate(vop->dclk, adjusted_mode->clock * 1000); |
| out: |
| ret_clk = clk_enable(vop->dclk); |
| if (ret_clk < 0) { |
| dev_err(vop->dev, "failed to enable dclk - %d\n", ret_clk); |
| return ret_clk; |
| } |
| |
| return ret; |
| } |
| |
| static void vop_crtc_commit(struct drm_crtc *crtc) |
| { |
| } |
| |
| static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = { |
| .dpms = vop_crtc_dpms, |
| .prepare = vop_crtc_prepare, |
| .mode_fixup = vop_crtc_mode_fixup, |
| .mode_set = vop_crtc_mode_set, |
| .mode_set_base = vop_crtc_mode_set_base, |
| .commit = vop_crtc_commit, |
| }; |
| |
| static int vop_crtc_page_flip(struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| struct drm_pending_vblank_event *event, |
| uint32_t page_flip_flags) |
| { |
| struct vop *vop = to_vop(crtc); |
| struct drm_framebuffer *old_fb = crtc->primary->fb; |
| int ret; |
| |
| /* when the page flip is requested, crtc should be on */ |
| if (!vop->is_enabled) { |
| DRM_DEBUG("page flip request rejected because crtc is off.\n"); |
| return 0; |
| } |
| |
| crtc->primary->fb = fb; |
| |
| ret = vop_update_primary_plane(crtc, event); |
| if (ret) |
| crtc->primary->fb = old_fb; |
| |
| return ret; |
| } |
| |
| static void vop_win_state_complete(struct vop_win *vop_win, |
| struct vop_win_state *state) |
| { |
| struct vop *vop = vop_win->vop; |
| struct drm_crtc *crtc = &vop->crtc; |
| struct drm_device *drm = crtc->dev; |
| unsigned long flags; |
| |
| if (state->event) { |
| spin_lock_irqsave(&drm->event_lock, flags); |
| drm_send_vblank_event(drm, -1, state->event); |
| spin_unlock_irqrestore(&drm->event_lock, flags); |
| } |
| |
| list_del(&state->head); |
| drm_vblank_put(crtc->dev, vop->pipe); |
| } |
| |
| static void vop_crtc_destroy(struct drm_crtc *crtc) |
| { |
| drm_crtc_cleanup(crtc); |
| } |
| |
| static const struct drm_crtc_funcs vop_crtc_funcs = { |
| .set_config = drm_crtc_helper_set_config, |
| .page_flip = vop_crtc_page_flip, |
| .destroy = vop_crtc_destroy, |
| }; |
| |
| static bool vop_win_state_is_active(struct vop_win *vop_win, |
| struct vop_win_state *state) |
| { |
| bool active = false; |
| |
| if (state->fb) { |
| dma_addr_t yrgb_mst; |
| |
| /* check yrgb_mst to tell if pending_fb is now front */ |
| yrgb_mst = VOP_WIN_GET_YRGBADDR(vop_win->vop, vop_win->data); |
| |
| active = (yrgb_mst == state->yrgb_mst); |
| } else { |
| bool enabled; |
| |
| /* if enable bit is clear, plane is now disabled */ |
| enabled = VOP_WIN_GET(vop_win->vop, vop_win->data, enable); |
| |
| active = (enabled == 0); |
| } |
| |
| return active; |
| } |
| |
| static void vop_win_state_destroy(struct vop_win_state *state) |
| { |
| struct drm_framebuffer *fb = state->fb; |
| |
| if (fb) |
| drm_framebuffer_unreference(fb); |
| |
| kfree(state); |
| } |
| |
| static void vop_win_update_state(struct vop_win *vop_win) |
| { |
| struct vop_win_state *state, *n, *new_active = NULL; |
| |
| /* Check if any pending states are now active */ |
| list_for_each_entry(state, &vop_win->pending, head) |
| if (vop_win_state_is_active(vop_win, state)) { |
| new_active = state; |
| break; |
| } |
| |
| if (!new_active) |
| return; |
| |
| /* |
| * Destroy any 'skipped' pending states - states that were queued |
| * before the newly active state. |
| */ |
| list_for_each_entry_safe(state, n, &vop_win->pending, head) { |
| if (state == new_active) |
| break; |
| vop_win_state_complete(vop_win, state); |
| vop_win_state_destroy(state); |
| } |
| |
| vop_win_state_complete(vop_win, new_active); |
| |
| if (vop_win->active) |
| vop_win_state_destroy(vop_win->active); |
| vop_win->active = new_active; |
| } |
| |
| static bool vop_win_has_pending_state(struct vop_win *vop_win) |
| { |
| return !list_empty(&vop_win->pending); |
| } |
| |
| static irqreturn_t vop_isr_thread(int irq, void *data) |
| { |
| struct vop *vop = data; |
| const struct vop_data *vop_data = vop->data; |
| unsigned int i; |
| |
| mutex_lock(&vop->vsync_mutex); |
| |
| if (!vop->vsync_work_pending) |
| goto done; |
| |
| vop->vsync_work_pending = false; |
| |
| for (i = 0; i < vop_data->win_size; i++) { |
| struct vop_win *vop_win = &vop->win[i]; |
| |
| vop_win_update_state(vop_win); |
| if (vop_win_has_pending_state(vop_win)) |
| vop->vsync_work_pending = true; |
| } |
| |
| done: |
| mutex_unlock(&vop->vsync_mutex); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t vop_isr(int irq, void *data) |
| { |
| struct vop *vop = data; |
| uint32_t intr0_reg, active_irqs; |
| unsigned long flags; |
| int ret = IRQ_NONE; |
| |
| /* |
| * INTR_CTRL0 register has interrupt status, enable and clear bits, we |
| * must hold irq_lock to avoid a race with enable/disable_vblank(). |
| */ |
| spin_lock_irqsave(&vop->irq_lock, flags); |
| intr0_reg = vop_readl(vop, INTR_CTRL0); |
| active_irqs = intr0_reg & INTR_MASK; |
| /* Clear all active interrupt sources */ |
| if (active_irqs) |
| vop_writel(vop, INTR_CTRL0, |
| intr0_reg | (active_irqs << INTR_CLR_SHIFT)); |
| spin_unlock_irqrestore(&vop->irq_lock, flags); |
| |
| /* This is expected for vop iommu irqs, since the irq is shared */ |
| if (!active_irqs) |
| return IRQ_NONE; |
| |
| if (active_irqs & DSP_HOLD_VALID_INTR) { |
| complete(&vop->dsp_hold_completion); |
| active_irqs &= ~DSP_HOLD_VALID_INTR; |
| ret = IRQ_HANDLED; |
| } |
| |
| if (active_irqs & FS_INTR) { |
| drm_handle_vblank(vop->drm_dev, vop->pipe); |
| active_irqs &= ~FS_INTR; |
| ret = (vop->vsync_work_pending) ? IRQ_WAKE_THREAD : IRQ_HANDLED; |
| } |
| |
| /* Unhandled irqs are spurious. */ |
| if (active_irqs) |
| DRM_ERROR("Unknown VOP IRQs: %#02x\n", active_irqs); |
| |
| return ret; |
| } |
| |
| static int vop_create_crtc(struct vop *vop) |
| { |
| const struct vop_data *vop_data = vop->data; |
| struct device *dev = vop->dev; |
| struct drm_device *drm_dev = vop->drm_dev; |
| struct drm_plane *primary = NULL, *cursor = NULL, *plane; |
| struct drm_crtc *crtc = &vop->crtc; |
| struct device_node *port; |
| int ret; |
| int i; |
| |
| /* |
| * Create drm_plane for primary and cursor planes first, since we need |
| * to pass them to drm_crtc_init_with_planes, which sets the |
| * "possible_crtcs" to the newly initialized crtc. |
| */ |
| for (i = 0; i < vop_data->win_size; i++) { |
| struct vop_win *vop_win = &vop->win[i]; |
| const struct vop_win_data *win_data = vop_win->data; |
| |
| if (win_data->type != DRM_PLANE_TYPE_PRIMARY && |
| win_data->type != DRM_PLANE_TYPE_CURSOR) |
| continue; |
| |
| ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base, |
| 0, &vop_plane_funcs, |
| win_data->phy->data_formats, |
| win_data->phy->nformats, |
| win_data->type); |
| if (ret) { |
| DRM_ERROR("failed to initialize plane\n"); |
| goto err_cleanup_planes; |
| } |
| |
| plane = &vop_win->base; |
| if (plane->type == DRM_PLANE_TYPE_PRIMARY) |
| primary = plane; |
| else if (plane->type == DRM_PLANE_TYPE_CURSOR) |
| cursor = plane; |
| } |
| |
| ret = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor, |
| &vop_crtc_funcs); |
| if (ret) |
| return ret; |
| |
| drm_crtc_helper_add(crtc, &vop_crtc_helper_funcs); |
| |
| /* |
| * Create drm_planes for overlay windows with possible_crtcs restricted |
| * to the newly created crtc. |
| */ |
| for (i = 0; i < vop_data->win_size; i++) { |
| struct vop_win *vop_win = &vop->win[i]; |
| const struct vop_win_data *win_data = vop_win->data; |
| unsigned long possible_crtcs = 1 << drm_crtc_index(crtc); |
| |
| if (win_data->type != DRM_PLANE_TYPE_OVERLAY) |
| continue; |
| |
| ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base, |
| possible_crtcs, |
| &vop_plane_funcs, |
| win_data->phy->data_formats, |
| win_data->phy->nformats, |
| win_data->type); |
| if (ret) { |
| DRM_ERROR("failed to initialize overlay plane\n"); |
| goto err_cleanup_crtc; |
| } |
| } |
| |
| port = of_get_child_by_name(dev->of_node, "port"); |
| if (!port) { |
| DRM_ERROR("no port node found in %s\n", |
| dev->of_node->full_name); |
| goto err_cleanup_crtc; |
| } |
| |
| init_completion(&vop->dsp_hold_completion); |
| crtc->port = port; |
| vop->pipe = drm_crtc_index(crtc); |
| rockchip_register_crtc_funcs(drm_dev, &private_crtc_funcs, vop->pipe); |
| |
| return 0; |
| |
| err_cleanup_crtc: |
| drm_crtc_cleanup(crtc); |
| err_cleanup_planes: |
| list_for_each_entry(plane, &drm_dev->mode_config.plane_list, head) |
| drm_plane_cleanup(plane); |
| return ret; |
| } |
| |
| static void vop_destroy_crtc(struct vop *vop) |
| { |
| struct drm_crtc *crtc = &vop->crtc; |
| |
| rockchip_unregister_crtc_funcs(vop->drm_dev, vop->pipe); |
| of_node_put(crtc->port); |
| drm_crtc_cleanup(crtc); |
| } |
| |
| static int vop_initial(struct vop *vop) |
| { |
| const struct vop_data *vop_data = vop->data; |
| const struct vop_reg_data *init_table = vop_data->init_table; |
| struct reset_control *ahb_rst; |
| int i, ret; |
| |
| vop->hclk = devm_clk_get(vop->dev, "hclk_vop"); |
| if (IS_ERR(vop->hclk)) { |
| dev_err(vop->dev, "failed to get hclk source\n"); |
| return PTR_ERR(vop->hclk); |
| } |
| vop->aclk = devm_clk_get(vop->dev, "aclk_vop"); |
| if (IS_ERR(vop->aclk)) { |
| dev_err(vop->dev, "failed to get aclk source\n"); |
| return PTR_ERR(vop->aclk); |
| } |
| vop->dclk = devm_clk_get(vop->dev, "dclk_vop"); |
| if (IS_ERR(vop->dclk)) { |
| dev_err(vop->dev, "failed to get dclk source\n"); |
| return PTR_ERR(vop->dclk); |
| } |
| |
| ret = clk_prepare(vop->hclk); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to prepare hclk\n"); |
| return ret; |
| } |
| |
| ret = clk_prepare(vop->dclk); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to prepare dclk\n"); |
| goto err_unprepare_hclk; |
| } |
| |
| ret = clk_prepare(vop->aclk); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to prepare aclk\n"); |
| goto err_unprepare_dclk; |
| } |
| |
| /* |
| * enable hclk, so that we can config vop register. |
| */ |
| ret = clk_enable(vop->hclk); |
| if (ret < 0) { |
| dev_err(vop->dev, "failed to prepare aclk\n"); |
| goto err_unprepare_aclk; |
| } |
| /* |
| * do hclk_reset, reset all vop registers. |
| */ |
| ahb_rst = devm_reset_control_get(vop->dev, "ahb"); |
| if (IS_ERR(ahb_rst)) { |
| dev_err(vop->dev, "failed to get ahb reset\n"); |
| ret = PTR_ERR(ahb_rst); |
| goto err_disable_hclk; |
| } |
| reset_control_assert(ahb_rst); |
| usleep_range(10, 20); |
| reset_control_deassert(ahb_rst); |
| |
| memcpy(vop->regsbak, vop->regs, vop->len); |
| |
| for (i = 0; i < vop_data->table_size; i++) |
| vop_writel(vop, init_table[i].offset, init_table[i].value); |
| |
| for (i = 0; i < vop_data->win_size; i++) { |
| const struct vop_win_data *win = &vop_data->win[i]; |
| |
| VOP_WIN_SET(vop, win, enable, 0); |
| } |
| |
| vop_cfg_done(vop); |
| |
| /* |
| * do dclk_reset, let all config take affect. |
| */ |
| vop->dclk_rst = devm_reset_control_get(vop->dev, "dclk"); |
| if (IS_ERR(vop->dclk_rst)) { |
| dev_err(vop->dev, "failed to get dclk reset\n"); |
| ret = PTR_ERR(vop->dclk_rst); |
| goto err_unprepare_aclk; |
| } |
| reset_control_assert(vop->dclk_rst); |
| usleep_range(10, 20); |
| reset_control_deassert(vop->dclk_rst); |
| |
| clk_disable(vop->hclk); |
| |
| vop->is_enabled = false; |
| |
| return 0; |
| |
| err_disable_hclk: |
| clk_disable(vop->hclk); |
| err_unprepare_aclk: |
| clk_unprepare(vop->aclk); |
| err_unprepare_dclk: |
| clk_unprepare(vop->dclk); |
| err_unprepare_hclk: |
| clk_unprepare(vop->hclk); |
| return ret; |
| } |
| |
| /* |
| * Initialize the vop->win array elements. |
| */ |
| static void vop_win_init(struct vop *vop) |
| { |
| const struct vop_data *vop_data = vop->data; |
| unsigned int i; |
| |
| for (i = 0; i < vop_data->win_size; i++) { |
| struct vop_win *vop_win = &vop->win[i]; |
| const struct vop_win_data *win_data = &vop_data->win[i]; |
| |
| vop_win->data = win_data; |
| vop_win->vop = vop; |
| INIT_LIST_HEAD(&vop_win->pending); |
| } |
| } |
| |
| static int vop_bind(struct device *dev, struct device *master, void *data) |
| { |
| struct platform_device *pdev = to_platform_device(dev); |
| const struct of_device_id *of_id; |
| const struct vop_data *vop_data; |
| struct drm_device *drm_dev = data; |
| struct vop *vop; |
| struct resource *res; |
| size_t alloc_size; |
| int ret, irq; |
| |
| of_id = of_match_device(vop_driver_dt_match, dev); |
| vop_data = of_id->data; |
| if (!vop_data) |
| return -ENODEV; |
| |
| /* Allocate vop struct and its vop_win array */ |
| alloc_size = sizeof(*vop) + sizeof(*vop->win) * vop_data->win_size; |
| vop = devm_kzalloc(dev, alloc_size, GFP_KERNEL); |
| if (!vop) |
| return -ENOMEM; |
| |
| vop->dev = dev; |
| vop->data = vop_data; |
| vop->drm_dev = drm_dev; |
| dev_set_drvdata(dev, vop); |
| |
| vop_win_init(vop); |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| vop->len = resource_size(res); |
| vop->regs = devm_ioremap_resource(dev, res); |
| if (IS_ERR(vop->regs)) |
| return PTR_ERR(vop->regs); |
| |
| vop->regsbak = devm_kzalloc(dev, vop->len, GFP_KERNEL); |
| if (!vop->regsbak) |
| return -ENOMEM; |
| |
| ret = vop_initial(vop); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "cannot initial vop dev - err %d\n", ret); |
| return ret; |
| } |
| |
| irq = platform_get_irq(pdev, 0); |
| if (irq < 0) { |
| dev_err(dev, "cannot find irq for vop\n"); |
| return irq; |
| } |
| vop->irq = (unsigned int)irq; |
| |
| spin_lock_init(&vop->reg_lock); |
| spin_lock_init(&vop->irq_lock); |
| |
| mutex_init(&vop->vsync_mutex); |
| |
| ret = devm_request_threaded_irq(dev, vop->irq, vop_isr, vop_isr_thread, |
| IRQF_SHARED, dev_name(dev), vop); |
| if (ret) |
| return ret; |
| |
| /* IRQ is initially disabled; it gets enabled in power_on */ |
| disable_irq(vop->irq); |
| |
| ret = vop_create_crtc(vop); |
| if (ret) |
| return ret; |
| |
| pm_runtime_enable(&pdev->dev); |
| return 0; |
| } |
| |
| static void vop_unbind(struct device *dev, struct device *master, void *data) |
| { |
| struct vop *vop = dev_get_drvdata(dev); |
| |
| pm_runtime_disable(dev); |
| vop_destroy_crtc(vop); |
| } |
| |
| static const struct component_ops vop_component_ops = { |
| .bind = vop_bind, |
| .unbind = vop_unbind, |
| }; |
| |
| static int vop_probe(struct platform_device *pdev) |
| { |
| struct device *dev = &pdev->dev; |
| |
| if (!dev->of_node) { |
| dev_err(dev, "can't find vop devices\n"); |
| return -ENODEV; |
| } |
| |
| return component_add(dev, &vop_component_ops); |
| } |
| |
| static int vop_remove(struct platform_device *pdev) |
| { |
| component_del(&pdev->dev, &vop_component_ops); |
| |
| return 0; |
| } |
| |
| struct platform_driver vop_platform_driver = { |
| .probe = vop_probe, |
| .remove = vop_remove, |
| .driver = { |
| .name = "rockchip-vop", |
| .owner = THIS_MODULE, |
| .of_match_table = of_match_ptr(vop_driver_dt_match), |
| }, |
| }; |
| |
| module_platform_driver(vop_platform_driver); |
| |
| MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>"); |
| MODULE_DESCRIPTION("ROCKCHIP VOP Driver"); |
| MODULE_LICENSE("GPL v2"); |