/* * Copyright (C) 2012 Russell King * Rewritten from the dovefb driver, and Armada510 manuals. * * 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. */ #include #include #include #include #include #include #include #include #include #include "armada_crtc.h" #include "armada_drm.h" #include "armada_fb.h" #include "armada_gem.h" #include "armada_hw.h" #include "armada_plane.h" #include "armada_trace.h" /* * A note about interlacing. Let's consider HDMI 1920x1080i. * The timing parameters we have from X are: * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot * 1920 2448 2492 2640 1080 1084 1094 1125 * Which get translated to: * Hact HsyA HsyI Htot Vact VsyA VsyI Vtot * 1920 2448 2492 2640 540 542 547 562 * * This is how it is defined by CEA-861-D - line and pixel numbers are * referenced to the rising edge of VSYNC and HSYNC. Total clocks per * line: 2640. The odd frame, the first active line is at line 21, and * the even frame, the first active line is 584. * * LN: 560 561 562 563 567 568 569 * DE: ~~~|____________________________//__________________________ * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____ * VSYNC: _________________________|~~~~~~//~~~~~~~~~~~~~~~|__________ * 22 blanking lines. VSYNC at 1320 (referenced to the HSYNC rising edge). * * LN: 1123 1124 1125 1 5 6 7 * DE: ~~~|____________________________//__________________________ * HSYNC: ____|~|_____|~|_____|~|_____|~|_//__|~|_____|~|_____|~|_____ * VSYNC: ____________________|~~~~~~~~~~~//~~~~~~~~~~|_______________ * 23 blanking lines * * The Armada LCD Controller line and pixel numbers are, like X timings, * referenced to the top left of the active frame. * * So, translating these to our LCD controller: * Odd frame, 563 total lines, VSYNC at line 543-548, pixel 1128. * Even frame, 562 total lines, VSYNC at line 542-547, pixel 2448. * Note: Vsync front porch remains constant! * * if (odd_frame) { * vtotal = mode->crtc_vtotal + 1; * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay + 1; * vhorizpos = mode->crtc_hsync_start - mode->crtc_htotal / 2 * } else { * vtotal = mode->crtc_vtotal; * vbackporch = mode->crtc_vsync_start - mode->crtc_vdisplay; * vhorizpos = mode->crtc_hsync_start; * } * vfrontporch = mode->crtc_vtotal - mode->crtc_vsync_end; * * So, we need to reprogram these registers on each vsync event: * LCD_SPU_V_PORCH, LCD_SPU_ADV_REG, LCD_SPUT_V_H_TOTAL * * Note: we do not use the frame done interrupts because these appear * to happen too early, and lead to jitter on the display (presumably * they occur at the end of the last active line, before the vsync back * porch, which we're reprogramming.) */ void armada_drm_crtc_update_regs(struct armada_crtc *dcrtc, struct armada_regs *regs) { while (regs->offset != ~0) { void __iomem *reg = dcrtc->base + regs->offset; uint32_t val; val = regs->mask; if (val != 0) val &= readl_relaxed(reg); writel_relaxed(val | regs->val, reg); ++regs; } } #define dpms_blanked(dpms) ((dpms) != DRM_MODE_DPMS_ON) static void armada_drm_crtc_update(struct armada_crtc *dcrtc) { uint32_t dumb_ctrl; dumb_ctrl = dcrtc->cfg_dumb_ctrl; if (!dpms_blanked(dcrtc->dpms)) dumb_ctrl |= CFG_DUMB_ENA; /* * When the dumb interface isn't in DUMB24_RGB888_0 mode, it might * be using SPI or GPIO. If we set this to DUMB_BLANK, we will * force LCD_D[23:0] to output blank color, overriding the GPIO or * SPI usage. So leave it as-is unless in DUMB24_RGB888_0 mode. */ if (dpms_blanked(dcrtc->dpms) && (dumb_ctrl & DUMB_MASK) == DUMB24_RGB888_0) { dumb_ctrl &= ~DUMB_MASK; dumb_ctrl |= DUMB_BLANK; } /* * The documentation doesn't indicate what the normal state of * the sync signals are. Sebastian Hesselbart kindly probed * these signals on his board to determine their state. * * The non-inverted state of the sync signals is active high. * Setting these bits makes the appropriate signal active low. */ if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NCSYNC) dumb_ctrl |= CFG_INV_CSYNC; if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NHSYNC) dumb_ctrl |= CFG_INV_HSYNC; if (dcrtc->crtc.mode.flags & DRM_MODE_FLAG_NVSYNC) dumb_ctrl |= CFG_INV_VSYNC; if (dcrtc->dumb_ctrl != dumb_ctrl) { dcrtc->dumb_ctrl = dumb_ctrl; writel_relaxed(dumb_ctrl, dcrtc->base + LCD_SPU_DUMB_CTRL); } } static void armada_drm_plane_work_call(struct armada_crtc *dcrtc, struct armada_plane_work *work, void (*fn)(struct armada_crtc *, struct armada_plane_work *)) { struct armada_plane *dplane = drm_to_armada_plane(work->plane); struct drm_pending_vblank_event *event; struct drm_framebuffer *fb; if (fn) fn(dcrtc, work); drm_crtc_vblank_put(&dcrtc->crtc); event = work->event; fb = work->old_fb; if (event || fb) { struct drm_device *dev = dcrtc->crtc.dev; unsigned long flags; spin_lock_irqsave(&dev->event_lock, flags); if (event) drm_crtc_send_vblank_event(&dcrtc->crtc, event); if (fb) __armada_drm_queue_unref_work(dev, fb); spin_unlock_irqrestore(&dev->event_lock, flags); } if (work->need_kfree) kfree(work); wake_up(&dplane->frame_wait); } static void armada_drm_plane_work_run(struct armada_crtc *dcrtc, struct drm_plane *plane) { struct armada_plane *dplane = drm_to_armada_plane(plane); struct armada_plane_work *work = xchg(&dplane->work, NULL); /* Handle any pending frame work. */ if (work) armada_drm_plane_work_call(dcrtc, work, work->fn); } int armada_drm_plane_work_queue(struct armada_crtc *dcrtc, struct armada_plane_work *work) { struct armada_plane *plane = drm_to_armada_plane(work->plane); int ret; ret = drm_crtc_vblank_get(&dcrtc->crtc); if (ret) return ret; ret = cmpxchg(&plane->work, NULL, work) ? -EBUSY : 0; if (ret) drm_crtc_vblank_put(&dcrtc->crtc); return ret; } int armada_drm_plane_work_wait(struct armada_plane *plane, long timeout) { return wait_event_timeout(plane->frame_wait, !plane->work, timeout); } void armada_drm_plane_work_cancel(struct armada_crtc *dcrtc, struct armada_plane *dplane) { struct armada_plane_work *work = xchg(&dplane->work, NULL); if (work) armada_drm_plane_work_call(dcrtc, work, work->cancel); } static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc, struct armada_plane_work *work) { unsigned long flags; spin_lock_irqsave(&dcrtc->irq_lock, flags); armada_drm_crtc_update_regs(dcrtc, work->regs); spin_unlock_irqrestore(&dcrtc->irq_lock, flags); } static struct armada_plane_work * armada_drm_crtc_alloc_plane_work(struct drm_plane *plane) { struct armada_plane_work *work; int i = 0; work = kzalloc(sizeof(*work), GFP_KERNEL); if (!work) return NULL; work->plane = plane; work->fn = armada_drm_crtc_complete_frame_work; work->need_kfree = true; armada_reg_queue_end(work->regs, i); return work; } static void armada_drm_vblank_off(struct armada_crtc *dcrtc) { /* * Tell the DRM core that vblank IRQs aren't going to happen for * a while. This cleans up any pending vblank events for us. */ drm_crtc_vblank_off(&dcrtc->crtc); armada_drm_plane_work_run(dcrtc, dcrtc->crtc.primary); } /* The mode_config.mutex will be held for this call */ static void armada_drm_crtc_dpms(struct drm_crtc *crtc, int dpms) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); if (dpms_blanked(dcrtc->dpms) != dpms_blanked(dpms)) { if (dpms_blanked(dpms)) armada_drm_vblank_off(dcrtc); else if (!IS_ERR(dcrtc->clk)) WARN_ON(clk_prepare_enable(dcrtc->clk)); dcrtc->dpms = dpms; armada_drm_crtc_update(dcrtc); if (!dpms_blanked(dpms)) drm_crtc_vblank_on(&dcrtc->crtc); else if (!IS_ERR(dcrtc->clk)) clk_disable_unprepare(dcrtc->clk); } else if (dcrtc->dpms != dpms) { dcrtc->dpms = dpms; } } /* * Prepare for a mode set. Turn off overlay to ensure that we don't end * up with the overlay size being bigger than the active screen size. * We rely upon X refreshing this state after the mode set has completed. * * The mode_config.mutex will be held for this call */ static void armada_drm_crtc_prepare(struct drm_crtc *crtc) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct drm_plane *plane; u32 val; /* * If we have an overlay plane associated with this CRTC, disable * it before the modeset to avoid its coordinates being outside * the new mode parameters. */ plane = dcrtc->plane; if (plane) { drm_plane_force_disable(plane); WARN_ON(!armada_drm_plane_work_wait(drm_to_armada_plane(plane), HZ)); } /* Wait for pending flips to complete */ armada_drm_plane_work_wait(drm_to_armada_plane(dcrtc->crtc.primary), MAX_SCHEDULE_TIMEOUT); drm_crtc_vblank_off(crtc); val = dcrtc->dumb_ctrl & ~CFG_DUMB_ENA; if (val != dcrtc->dumb_ctrl) { dcrtc->dumb_ctrl = val; writel_relaxed(val, dcrtc->base + LCD_SPU_DUMB_CTRL); } } /* The mode_config.mutex will be held for this call */ static void armada_drm_crtc_commit(struct drm_crtc *crtc) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); dcrtc->dpms = DRM_MODE_DPMS_ON; armada_drm_crtc_update(dcrtc); drm_crtc_vblank_on(crtc); } /* The mode_config.mutex will be held for this call */ static bool armada_drm_crtc_mode_fixup(struct drm_crtc *crtc, const struct drm_display_mode *mode, struct drm_display_mode *adj) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); int ret; /* We can't do interlaced modes if we don't have the SPU_ADV_REG */ if (!dcrtc->variant->has_spu_adv_reg && adj->flags & DRM_MODE_FLAG_INTERLACE) return false; /* Check whether the display mode is possible */ ret = dcrtc->variant->compute_clock(dcrtc, adj, NULL); if (ret) return false; return true; } /* These are locked by dev->vbl_lock */ static void armada_drm_crtc_disable_irq(struct armada_crtc *dcrtc, u32 mask) { if (dcrtc->irq_ena & mask) { dcrtc->irq_ena &= ~mask; writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA); } } static void armada_drm_crtc_enable_irq(struct armada_crtc *dcrtc, u32 mask) { if ((dcrtc->irq_ena & mask) != mask) { dcrtc->irq_ena |= mask; writel(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA); if (readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR) & mask) writel(0, dcrtc->base + LCD_SPU_IRQ_ISR); } } static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat) { void __iomem *base = dcrtc->base; struct drm_plane *ovl_plane; if (stat & DMA_FF_UNDERFLOW) DRM_ERROR("video underflow on crtc %u\n", dcrtc->num); if (stat & GRA_FF_UNDERFLOW) DRM_ERROR("graphics underflow on crtc %u\n", dcrtc->num); if (stat & VSYNC_IRQ) drm_crtc_handle_vblank(&dcrtc->crtc); ovl_plane = dcrtc->plane; if (ovl_plane) armada_drm_plane_work_run(dcrtc, ovl_plane); spin_lock(&dcrtc->irq_lock); if (stat & GRA_FRAME_IRQ && dcrtc->interlaced) { int i = stat & GRA_FRAME_IRQ0 ? 0 : 1; uint32_t val; writel_relaxed(dcrtc->v[i].spu_v_porch, base + LCD_SPU_V_PORCH); writel_relaxed(dcrtc->v[i].spu_v_h_total, base + LCD_SPUT_V_H_TOTAL); val = readl_relaxed(base + LCD_SPU_ADV_REG); val &= ~(ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF | ADV_VSYNCOFFEN); val |= dcrtc->v[i].spu_adv_reg; writel_relaxed(val, base + LCD_SPU_ADV_REG); } if (stat & DUMB_FRAMEDONE && dcrtc->cursor_update) { writel_relaxed(dcrtc->cursor_hw_pos, base + LCD_SPU_HWC_OVSA_HPXL_VLN); writel_relaxed(dcrtc->cursor_hw_sz, base + LCD_SPU_HWC_HPXL_VLN); armada_updatel(CFG_HWC_ENA, CFG_HWC_ENA | CFG_HWC_1BITMOD | CFG_HWC_1BITENA, base + LCD_SPU_DMA_CTRL0); dcrtc->cursor_update = false; armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA); } spin_unlock(&dcrtc->irq_lock); if (stat & GRA_FRAME_IRQ) armada_drm_plane_work_run(dcrtc, dcrtc->crtc.primary); } static irqreturn_t armada_drm_irq(int irq, void *arg) { struct armada_crtc *dcrtc = arg; u32 v, stat = readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR); /* * Reading the ISR appears to clear bits provided CLEAN_SPU_IRQ_ISR * is set. Writing has some other effect to acknowledge the IRQ - * without this, we only get a single IRQ. */ writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR); trace_armada_drm_irq(&dcrtc->crtc, stat); /* Mask out those interrupts we haven't enabled */ v = stat & dcrtc->irq_ena; if (v & (VSYNC_IRQ|GRA_FRAME_IRQ|DUMB_FRAMEDONE)) { armada_drm_crtc_irq(dcrtc, stat); return IRQ_HANDLED; } return IRQ_NONE; } /* The mode_config.mutex will be held for this call */ static void armada_drm_crtc_mode_set_nofb(struct drm_crtc *crtc) { struct drm_display_mode *adj = &crtc->state->adjusted_mode; struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct armada_regs regs[17]; uint32_t lm, rm, tm, bm, val, sclk; unsigned long flags; unsigned i; bool interlaced = !!(adj->flags & DRM_MODE_FLAG_INTERLACE); i = 0; rm = adj->crtc_hsync_start - adj->crtc_hdisplay; lm = adj->crtc_htotal - adj->crtc_hsync_end; bm = adj->crtc_vsync_start - adj->crtc_vdisplay; tm = adj->crtc_vtotal - adj->crtc_vsync_end; DRM_DEBUG_DRIVER("H: %d %d %d %d lm %d rm %d\n", adj->crtc_hdisplay, adj->crtc_hsync_start, adj->crtc_hsync_end, adj->crtc_htotal, lm, rm); DRM_DEBUG_DRIVER("V: %d %d %d %d tm %d bm %d\n", adj->crtc_vdisplay, adj->crtc_vsync_start, adj->crtc_vsync_end, adj->crtc_vtotal, tm, bm); /* * If we are blanked, we would have disabled the clock. Re-enable * it so that compute_clock() does the right thing. */ if (!IS_ERR(dcrtc->clk) && dpms_blanked(dcrtc->dpms)) WARN_ON(clk_prepare_enable(dcrtc->clk)); /* Now compute the divider for real */ dcrtc->variant->compute_clock(dcrtc, adj, &sclk); armada_reg_queue_set(regs, i, sclk, LCD_CFG_SCLK_DIV); if (interlaced ^ dcrtc->interlaced) { if (adj->flags & DRM_MODE_FLAG_INTERLACE) drm_crtc_vblank_get(&dcrtc->crtc); else drm_crtc_vblank_put(&dcrtc->crtc); dcrtc->interlaced = interlaced; } spin_lock_irqsave(&dcrtc->irq_lock, flags); /* Even interlaced/progressive frame */ dcrtc->v[1].spu_v_h_total = adj->crtc_vtotal << 16 | adj->crtc_htotal; dcrtc->v[1].spu_v_porch = tm << 16 | bm; val = adj->crtc_hsync_start; dcrtc->v[1].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN | dcrtc->variant->spu_adv_reg; if (interlaced) { /* Odd interlaced frame */ dcrtc->v[0].spu_v_h_total = dcrtc->v[1].spu_v_h_total + (1 << 16); dcrtc->v[0].spu_v_porch = dcrtc->v[1].spu_v_porch + 1; val = adj->crtc_hsync_start - adj->crtc_htotal / 2; dcrtc->v[0].spu_adv_reg = val << 20 | val | ADV_VSYNCOFFEN | dcrtc->variant->spu_adv_reg; } else { dcrtc->v[0] = dcrtc->v[1]; } val = adj->crtc_vdisplay << 16 | adj->crtc_hdisplay; armada_reg_queue_set(regs, i, val, LCD_SPU_V_H_ACTIVE); armada_reg_queue_set(regs, i, (lm << 16) | rm, LCD_SPU_H_PORCH); armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_porch, LCD_SPU_V_PORCH); armada_reg_queue_set(regs, i, dcrtc->v[0].spu_v_h_total, LCD_SPUT_V_H_TOTAL); if (dcrtc->variant->has_spu_adv_reg) { armada_reg_queue_mod(regs, i, dcrtc->v[0].spu_adv_reg, ADV_VSYNC_L_OFF | ADV_VSYNC_H_OFF | ADV_VSYNCOFFEN, LCD_SPU_ADV_REG); } val = adj->flags & DRM_MODE_FLAG_NVSYNC ? CFG_VSYNC_INV : 0; armada_reg_queue_mod(regs, i, val, CFG_VSYNC_INV, LCD_SPU_DMA_CTRL1); armada_reg_queue_end(regs, i); armada_drm_crtc_update_regs(dcrtc, regs); spin_unlock_irqrestore(&dcrtc->irq_lock, flags); } /* The mode_config.mutex will be held for this call */ static void armada_drm_crtc_disable(struct drm_crtc *crtc) { armada_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); /* Disable our primary plane when we disable the CRTC. */ crtc->primary->funcs->disable_plane(crtc->primary, NULL); } static void armada_drm_crtc_atomic_begin(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct armada_plane *dplane; DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); /* Wait 100ms for any plane works to complete */ dplane = drm_to_armada_plane(crtc->primary); if (WARN_ON(armada_drm_plane_work_wait(dplane, HZ / 10) == 0)) armada_drm_plane_work_cancel(dcrtc, dplane); dcrtc->regs_idx = 0; dcrtc->regs = dcrtc->atomic_regs; } static void armada_drm_crtc_atomic_flush(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); unsigned long flags; DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); armada_reg_queue_end(dcrtc->regs, dcrtc->regs_idx); spin_lock_irqsave(&dcrtc->irq_lock, flags); armada_drm_crtc_update_regs(dcrtc, dcrtc->regs); spin_unlock_irqrestore(&dcrtc->irq_lock, flags); } static const struct drm_crtc_helper_funcs armada_crtc_helper_funcs = { .dpms = armada_drm_crtc_dpms, .prepare = armada_drm_crtc_prepare, .commit = armada_drm_crtc_commit, .mode_fixup = armada_drm_crtc_mode_fixup, .mode_set = drm_helper_crtc_mode_set, .mode_set_nofb = armada_drm_crtc_mode_set_nofb, .mode_set_base = drm_helper_crtc_mode_set_base, .disable = armada_drm_crtc_disable, .atomic_begin = armada_drm_crtc_atomic_begin, .atomic_flush = armada_drm_crtc_atomic_flush, }; static void armada_load_cursor_argb(void __iomem *base, uint32_t *pix, unsigned stride, unsigned width, unsigned height) { uint32_t addr; unsigned y; addr = SRAM_HWC32_RAM1; for (y = 0; y < height; y++) { uint32_t *p = &pix[y * stride]; unsigned x; for (x = 0; x < width; x++, p++) { uint32_t val = *p; val = (val & 0xff00ff00) | (val & 0x000000ff) << 16 | (val & 0x00ff0000) >> 16; writel_relaxed(val, base + LCD_SPU_SRAM_WRDAT); writel_relaxed(addr | SRAM_WRITE, base + LCD_SPU_SRAM_CTRL); readl_relaxed(base + LCD_SPU_HWC_OVSA_HPXL_VLN); addr += 1; if ((addr & 0x00ff) == 0) addr += 0xf00; if ((addr & 0x30ff) == 0) addr = SRAM_HWC32_RAM2; } } } static void armada_drm_crtc_cursor_tran(void __iomem *base) { unsigned addr; for (addr = 0; addr < 256; addr++) { /* write the default value */ writel_relaxed(0x55555555, base + LCD_SPU_SRAM_WRDAT); writel_relaxed(addr | SRAM_WRITE | SRAM_HWC32_TRAN, base + LCD_SPU_SRAM_CTRL); } } static int armada_drm_crtc_cursor_update(struct armada_crtc *dcrtc, bool reload) { uint32_t xoff, xscr, w = dcrtc->cursor_w, s; uint32_t yoff, yscr, h = dcrtc->cursor_h; uint32_t para1; /* * Calculate the visible width and height of the cursor, * screen position, and the position in the cursor bitmap. */ if (dcrtc->cursor_x < 0) { xoff = -dcrtc->cursor_x; xscr = 0; w -= min(xoff, w); } else if (dcrtc->cursor_x + w > dcrtc->crtc.mode.hdisplay) { xoff = 0; xscr = dcrtc->cursor_x; w = max_t(int, dcrtc->crtc.mode.hdisplay - dcrtc->cursor_x, 0); } else { xoff = 0; xscr = dcrtc->cursor_x; } if (dcrtc->cursor_y < 0) { yoff = -dcrtc->cursor_y; yscr = 0; h -= min(yoff, h); } else if (dcrtc->cursor_y + h > dcrtc->crtc.mode.vdisplay) { yoff = 0; yscr = dcrtc->cursor_y; h = max_t(int, dcrtc->crtc.mode.vdisplay - dcrtc->cursor_y, 0); } else { yoff = 0; yscr = dcrtc->cursor_y; } /* On interlaced modes, the vertical cursor size must be halved */ s = dcrtc->cursor_w; if (dcrtc->interlaced) { s *= 2; yscr /= 2; h /= 2; } if (!dcrtc->cursor_obj || !h || !w) { spin_lock_irq(&dcrtc->irq_lock); armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA); dcrtc->cursor_update = false; armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0); spin_unlock_irq(&dcrtc->irq_lock); return 0; } spin_lock_irq(&dcrtc->irq_lock); para1 = readl_relaxed(dcrtc->base + LCD_SPU_SRAM_PARA1); armada_updatel(CFG_CSB_256x32, CFG_CSB_256x32 | CFG_PDWN256x32, dcrtc->base + LCD_SPU_SRAM_PARA1); spin_unlock_irq(&dcrtc->irq_lock); /* * Initialize the transparency if the SRAM was powered down. * We must also reload the cursor data as well. */ if (!(para1 & CFG_CSB_256x32)) { armada_drm_crtc_cursor_tran(dcrtc->base); reload = true; } if (dcrtc->cursor_hw_sz != (h << 16 | w)) { spin_lock_irq(&dcrtc->irq_lock); armada_drm_crtc_disable_irq(dcrtc, DUMB_FRAMEDONE_ENA); dcrtc->cursor_update = false; armada_updatel(0, CFG_HWC_ENA, dcrtc->base + LCD_SPU_DMA_CTRL0); spin_unlock_irq(&dcrtc->irq_lock); reload = true; } if (reload) { struct armada_gem_object *obj = dcrtc->cursor_obj; uint32_t *pix; /* Set the top-left corner of the cursor image */ pix = obj->addr; pix += yoff * s + xoff; armada_load_cursor_argb(dcrtc->base, pix, s, w, h); } /* Reload the cursor position, size and enable in the IRQ handler */ spin_lock_irq(&dcrtc->irq_lock); dcrtc->cursor_hw_pos = yscr << 16 | xscr; dcrtc->cursor_hw_sz = h << 16 | w; dcrtc->cursor_update = true; armada_drm_crtc_enable_irq(dcrtc, DUMB_FRAMEDONE_ENA); spin_unlock_irq(&dcrtc->irq_lock); return 0; } static void cursor_update(void *data) { armada_drm_crtc_cursor_update(data, true); } static int armada_drm_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file, uint32_t handle, uint32_t w, uint32_t h) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct armada_gem_object *obj = NULL; int ret; /* If no cursor support, replicate drm's return value */ if (!dcrtc->variant->has_spu_adv_reg) return -ENXIO; if (handle && w > 0 && h > 0) { /* maximum size is 64x32 or 32x64 */ if (w > 64 || h > 64 || (w > 32 && h > 32)) return -ENOMEM; obj = armada_gem_object_lookup(file, handle); if (!obj) return -ENOENT; /* Must be a kernel-mapped object */ if (!obj->addr) { drm_gem_object_put_unlocked(&obj->obj); return -EINVAL; } if (obj->obj.size < w * h * 4) { DRM_ERROR("buffer is too small\n"); drm_gem_object_put_unlocked(&obj->obj); return -ENOMEM; } } if (dcrtc->cursor_obj) { dcrtc->cursor_obj->update = NULL; dcrtc->cursor_obj->update_data = NULL; drm_gem_object_put_unlocked(&dcrtc->cursor_obj->obj); } dcrtc->cursor_obj = obj; dcrtc->cursor_w = w; dcrtc->cursor_h = h; ret = armada_drm_crtc_cursor_update(dcrtc, true); if (obj) { obj->update_data = dcrtc; obj->update = cursor_update; } return ret; } static int armada_drm_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); int ret; /* If no cursor support, replicate drm's return value */ if (!dcrtc->variant->has_spu_adv_reg) return -EFAULT; dcrtc->cursor_x = x; dcrtc->cursor_y = y; ret = armada_drm_crtc_cursor_update(dcrtc, false); return ret; } static void armada_drm_crtc_destroy(struct drm_crtc *crtc) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct armada_private *priv = crtc->dev->dev_private; if (dcrtc->cursor_obj) drm_gem_object_put_unlocked(&dcrtc->cursor_obj->obj); priv->dcrtc[dcrtc->num] = NULL; drm_crtc_cleanup(&dcrtc->crtc); if (!IS_ERR(dcrtc->clk)) clk_disable_unprepare(dcrtc->clk); writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ENA); of_node_put(dcrtc->crtc.port); kfree(dcrtc); } /* * The mode_config lock is held here, to prevent races between this * and a mode_set. */ static int armada_drm_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb, struct drm_pending_vblank_event *event, uint32_t page_flip_flags, struct drm_modeset_acquire_ctx *ctx) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct drm_plane *plane = crtc->primary; const struct drm_plane_helper_funcs *plane_funcs; struct drm_plane_state *state; struct armada_plane_work *work; int ret; /* Construct new state for the primary plane */ state = drm_atomic_helper_plane_duplicate_state(plane); if (!state) return -ENOMEM; drm_atomic_set_fb_for_plane(state, fb); work = armada_drm_crtc_alloc_plane_work(plane); if (!work) { ret = -ENOMEM; goto put_state; } /* Make sure we can get vblank interrupts */ ret = drm_crtc_vblank_get(crtc); if (ret) goto put_work; /* * If we have another work pending, we can't process this flip. * The modeset locks protect us from another user queuing a work * while we're setting up. */ if (drm_to_armada_plane(plane)->work) { ret = -EBUSY; goto put_vblank; } work->event = event; work->old_fb = plane->state->fb; /* * Hold a ref on the new fb while it's being displayed by the * hardware. The old fb refcount will be released in the worker. */ drm_framebuffer_get(state->fb); /* Point of no return */ swap(plane->state, state); dcrtc->regs_idx = 0; dcrtc->regs = work->regs; plane_funcs = plane->helper_private; plane_funcs->atomic_update(plane, state); armada_reg_queue_end(dcrtc->regs, dcrtc->regs_idx); /* Queue the work - this should never fail */ WARN_ON(armada_drm_plane_work_queue(dcrtc, work)); work = NULL; /* * Finally, if the display is blanked, we won't receive an * interrupt, so complete it now. */ if (dpms_blanked(dcrtc->dpms)) armada_drm_plane_work_run(dcrtc, plane); put_vblank: drm_crtc_vblank_put(crtc); put_work: kfree(work); put_state: drm_atomic_helper_plane_destroy_state(plane, state); return ret; } /* These are called under the vbl_lock. */ static int armada_drm_crtc_enable_vblank(struct drm_crtc *crtc) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); unsigned long flags; spin_lock_irqsave(&dcrtc->irq_lock, flags); armada_drm_crtc_enable_irq(dcrtc, VSYNC_IRQ_ENA); spin_unlock_irqrestore(&dcrtc->irq_lock, flags); return 0; } static void armada_drm_crtc_disable_vblank(struct drm_crtc *crtc) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); unsigned long flags; spin_lock_irqsave(&dcrtc->irq_lock, flags); armada_drm_crtc_disable_irq(dcrtc, VSYNC_IRQ_ENA); spin_unlock_irqrestore(&dcrtc->irq_lock, flags); } static const struct drm_crtc_funcs armada_crtc_funcs = { .reset = drm_atomic_helper_crtc_reset, .cursor_set = armada_drm_crtc_cursor_set, .cursor_move = armada_drm_crtc_cursor_move, .destroy = armada_drm_crtc_destroy, .set_config = drm_crtc_helper_set_config, .page_flip = armada_drm_crtc_page_flip, .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, .enable_vblank = armada_drm_crtc_enable_vblank, .disable_vblank = armada_drm_crtc_disable_vblank, }; static int armada_drm_crtc_create(struct drm_device *drm, struct device *dev, struct resource *res, int irq, const struct armada_variant *variant, struct device_node *port) { struct armada_private *priv = drm->dev_private; struct armada_crtc *dcrtc; struct armada_plane *primary; void __iomem *base; int ret; base = devm_ioremap_resource(dev, res); if (IS_ERR(base)) return PTR_ERR(base); dcrtc = kzalloc(sizeof(*dcrtc), GFP_KERNEL); if (!dcrtc) { DRM_ERROR("failed to allocate Armada crtc\n"); return -ENOMEM; } if (dev != drm->dev) dev_set_drvdata(dev, dcrtc); dcrtc->variant = variant; dcrtc->base = base; dcrtc->num = drm->mode_config.num_crtc; dcrtc->clk = ERR_PTR(-EINVAL); dcrtc->cfg_dumb_ctrl = DUMB24_RGB888_0; dcrtc->spu_iopad_ctrl = CFG_VSCALE_LN_EN | CFG_IOPAD_DUMB24; spin_lock_init(&dcrtc->irq_lock); dcrtc->irq_ena = CLEAN_SPU_IRQ_ISR; /* Initialize some registers which we don't otherwise set */ writel_relaxed(0x00000001, dcrtc->base + LCD_CFG_SCLK_DIV); writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_BLANKCOLOR); writel_relaxed(dcrtc->spu_iopad_ctrl, dcrtc->base + LCD_SPU_IOPAD_CONTROL); writel_relaxed(0x00000000, dcrtc->base + LCD_SPU_SRAM_PARA0); writel_relaxed(CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 | CFG_PDWN32x32 | CFG_PDWN16x66 | CFG_PDWN32x66 | CFG_PDWN64x66, dcrtc->base + LCD_SPU_SRAM_PARA1); writel_relaxed(0x2032ff81, dcrtc->base + LCD_SPU_DMA_CTRL1); writel_relaxed(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA); readl_relaxed(dcrtc->base + LCD_SPU_IRQ_ISR); writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR); ret = devm_request_irq(dev, irq, armada_drm_irq, 0, "armada_drm_crtc", dcrtc); if (ret < 0) goto err_crtc; if (dcrtc->variant->init) { ret = dcrtc->variant->init(dcrtc, dev); if (ret) goto err_crtc; } /* Ensure AXI pipeline is enabled */ armada_updatel(CFG_ARBFAST_ENA, 0, dcrtc->base + LCD_SPU_DMA_CTRL0); priv->dcrtc[dcrtc->num] = dcrtc; dcrtc->crtc.port = port; primary = kzalloc(sizeof(*primary), GFP_KERNEL); if (!primary) { ret = -ENOMEM; goto err_crtc; } ret = armada_drm_primary_plane_init(drm, primary); if (ret) { kfree(primary); goto err_crtc; } ret = drm_crtc_init_with_planes(drm, &dcrtc->crtc, &primary->base, NULL, &armada_crtc_funcs, NULL); if (ret) goto err_crtc_init; drm_crtc_helper_add(&dcrtc->crtc, &armada_crtc_helper_funcs); return armada_overlay_plane_create(drm, 1 << dcrtc->num); err_crtc_init: primary->base.funcs->destroy(&primary->base); err_crtc: kfree(dcrtc); return ret; } static int armada_lcd_bind(struct device *dev, struct device *master, void *data) { struct platform_device *pdev = to_platform_device(dev); struct drm_device *drm = data; struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); int irq = platform_get_irq(pdev, 0); const struct armada_variant *variant; struct device_node *port = NULL; if (irq < 0) return irq; if (!dev->of_node) { const struct platform_device_id *id; id = platform_get_device_id(pdev); if (!id) return -ENXIO; variant = (const struct armada_variant *)id->driver_data; } else { const struct of_device_id *match; struct device_node *np, *parent = dev->of_node; match = of_match_device(dev->driver->of_match_table, dev); if (!match) return -ENXIO; np = of_get_child_by_name(parent, "ports"); if (np) parent = np; port = of_get_child_by_name(parent, "port"); of_node_put(np); if (!port) { dev_err(dev, "no port node found in %pOF\n", parent); return -ENXIO; } variant = match->data; } return armada_drm_crtc_create(drm, dev, res, irq, variant, port); } static void armada_lcd_unbind(struct device *dev, struct device *master, void *data) { struct armada_crtc *dcrtc = dev_get_drvdata(dev); armada_drm_crtc_destroy(&dcrtc->crtc); } static const struct component_ops armada_lcd_ops = { .bind = armada_lcd_bind, .unbind = armada_lcd_unbind, }; static int armada_lcd_probe(struct platform_device *pdev) { return component_add(&pdev->dev, &armada_lcd_ops); } static int armada_lcd_remove(struct platform_device *pdev) { component_del(&pdev->dev, &armada_lcd_ops); return 0; } static const struct of_device_id armada_lcd_of_match[] = { { .compatible = "marvell,dove-lcd", .data = &armada510_ops, }, {} }; MODULE_DEVICE_TABLE(of, armada_lcd_of_match); static const struct platform_device_id armada_lcd_platform_ids[] = { { .name = "armada-lcd", .driver_data = (unsigned long)&armada510_ops, }, { .name = "armada-510-lcd", .driver_data = (unsigned long)&armada510_ops, }, { }, }; MODULE_DEVICE_TABLE(platform, armada_lcd_platform_ids); struct platform_driver armada_lcd_platform_driver = { .probe = armada_lcd_probe, .remove = armada_lcd_remove, .driver = { .name = "armada-lcd", .owner = THIS_MODULE, .of_match_table = armada_lcd_of_match, }, .id_table = armada_lcd_platform_ids, };