/* * 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 "armada_crtc.h" #include "armada_drm.h" #include "armada_fb.h" #include "armada_gem.h" #include "armada_hw.h" struct armada_frame_work { struct drm_pending_vblank_event *event; struct armada_regs regs[4]; struct drm_framebuffer *old_fb; }; enum csc_mode { CSC_AUTO = 0, CSC_YUV_CCIR601 = 1, CSC_YUV_CCIR709 = 2, CSC_RGB_COMPUTER = 1, CSC_RGB_STUDIO = 2, }; /* * 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 unsigned armada_drm_crtc_calc_fb(struct drm_framebuffer *fb, int x, int y, struct armada_regs *regs, bool interlaced) { struct armada_gem_object *obj = drm_fb_obj(fb); unsigned pitch = fb->pitches[0]; unsigned offset = y * pitch + x * fb->bits_per_pixel / 8; uint32_t addr_odd, addr_even; unsigned i = 0; DRM_DEBUG_DRIVER("pitch %u x %d y %d bpp %d\n", pitch, x, y, fb->bits_per_pixel); addr_odd = addr_even = obj->dev_addr + offset; if (interlaced) { addr_even += pitch; pitch *= 2; } /* write offset, base, and pitch */ armada_reg_queue_set(regs, i, addr_odd, LCD_CFG_GRA_START_ADDR0); armada_reg_queue_set(regs, i, addr_even, LCD_CFG_GRA_START_ADDR1); armada_reg_queue_mod(regs, i, pitch, 0xffff, LCD_CFG_GRA_PITCH); return i; } static int armada_drm_crtc_queue_frame_work(struct armada_crtc *dcrtc, struct armada_frame_work *work) { struct drm_device *dev = dcrtc->crtc.dev; unsigned long flags; int ret; ret = drm_vblank_get(dev, dcrtc->num); if (ret) { DRM_ERROR("failed to acquire vblank counter\n"); return ret; } spin_lock_irqsave(&dev->event_lock, flags); if (!dcrtc->frame_work) dcrtc->frame_work = work; else ret = -EBUSY; spin_unlock_irqrestore(&dev->event_lock, flags); if (ret) drm_vblank_put(dev, dcrtc->num); return ret; } static void armada_drm_crtc_complete_frame_work(struct armada_crtc *dcrtc) { struct drm_device *dev = dcrtc->crtc.dev; struct armada_frame_work *work = dcrtc->frame_work; dcrtc->frame_work = NULL; armada_drm_crtc_update_regs(dcrtc, work->regs); if (work->event) drm_send_vblank_event(dev, dcrtc->num, work->event); drm_vblank_put(dev, dcrtc->num); /* Finally, queue the process-half of the cleanup. */ __armada_drm_queue_unref_work(dcrtc->crtc.dev, work->old_fb); kfree(work); } static void armada_drm_crtc_finish_fb(struct armada_crtc *dcrtc, struct drm_framebuffer *fb, bool force) { struct armada_frame_work *work; if (!fb) return; if (force) { /* Display is disabled, so just drop the old fb */ drm_framebuffer_unreference(fb); return; } work = kmalloc(sizeof(*work), GFP_KERNEL); if (work) { int i = 0; work->event = NULL; work->old_fb = fb; armada_reg_queue_end(work->regs, i); if (armada_drm_crtc_queue_frame_work(dcrtc, work) == 0) return; kfree(work); } /* * Oops - just drop the reference immediately and hope for * the best. The worst that will happen is the buffer gets * reused before it has finished being displayed. */ drm_framebuffer_unreference(fb); } static void armada_drm_vblank_off(struct armada_crtc *dcrtc) { struct drm_device *dev = dcrtc->crtc.dev; /* * 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_vblank_off(dev, dcrtc->num); /* Handle any pending flip event. */ spin_lock_irq(&dev->event_lock); if (dcrtc->frame_work) armada_drm_crtc_complete_frame_work(dcrtc); spin_unlock_irq(&dev->event_lock); } void armada_drm_crtc_gamma_set(struct drm_crtc *crtc, u16 r, u16 g, u16 b, int idx) { } void armada_drm_crtc_gamma_get(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b, int idx) { } /* 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 (dcrtc->dpms != dpms) { dcrtc->dpms = dpms; armada_drm_crtc_update(dcrtc); if (dpms_blanked(dpms)) armada_drm_vblank_off(dcrtc); } } /* * 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; /* * 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. DRM doesn't provide help with this. */ plane = dcrtc->plane; if (plane) { struct drm_framebuffer *fb = plane->fb; plane->funcs->disable_plane(plane); plane->fb = NULL; plane->crtc = NULL; drm_framebuffer_unreference(fb); } } /* 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); if (dcrtc->dpms != DRM_MODE_DPMS_ON) { dcrtc->dpms = DRM_MODE_DPMS_ON; armada_drm_crtc_update(dcrtc); } } /* 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; } static void armada_drm_crtc_irq(struct armada_crtc *dcrtc, u32 stat) { struct armada_vbl_event *e, *n; void __iomem *base = dcrtc->base; 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_handle_vblank(dcrtc->crtc.dev, dcrtc->num); spin_lock(&dcrtc->irq_lock); list_for_each_entry_safe(e, n, &dcrtc->vbl_list, node) { list_del_init(&e->node); drm_vblank_put(dcrtc->crtc.dev, dcrtc->num); e->fn(dcrtc, e->data); } 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) { struct drm_device *dev = dcrtc->crtc.dev; spin_lock(&dev->event_lock); if (dcrtc->frame_work) armada_drm_crtc_complete_frame_work(dcrtc); spin_unlock(&dev->event_lock); wake_up(&dcrtc->frame_wait); } } 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); /* * This is rediculous - rather than writing bits to clear, we * have to set the actual status register value. This is racy. */ writel_relaxed(0, dcrtc->base + LCD_SPU_IRQ_ISR); /* 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; } /* These are locked by dev->vbl_lock */ 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); } } 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 uint32_t armada_drm_crtc_calculate_csc(struct armada_crtc *dcrtc) { struct drm_display_mode *adj = &dcrtc->crtc.mode; uint32_t val = 0; if (dcrtc->csc_yuv_mode == CSC_YUV_CCIR709) val |= CFG_CSC_YUV_CCIR709; if (dcrtc->csc_rgb_mode == CSC_RGB_STUDIO) val |= CFG_CSC_RGB_STUDIO; /* * In auto mode, set the colorimetry, based upon the HDMI spec. * 1280x720p, 1920x1080p and 1920x1080i use ITU709, others use * ITU601. It may be more appropriate to set this depending on * the source - but what if the graphic frame is YUV and the * video frame is RGB? */ if ((adj->hdisplay == 1280 && adj->vdisplay == 720 && !(adj->flags & DRM_MODE_FLAG_INTERLACE)) || (adj->hdisplay == 1920 && adj->vdisplay == 1080)) { if (dcrtc->csc_yuv_mode == CSC_AUTO) val |= CFG_CSC_YUV_CCIR709; } /* * We assume we're connected to a TV-like device, so the YUV->RGB * conversion should produce a limited range. We should set this * depending on the connectors attached to this CRTC, and what * kind of device they report being connected. */ if (dcrtc->csc_rgb_mode == CSC_AUTO) val |= CFG_CSC_RGB_STUDIO; return val; } /* The mode_config.mutex will be held for this call */ static int armada_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_display_mode *adj, int x, int y, struct drm_framebuffer *old_fb) { 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; drm_framebuffer_reference(crtc->primary->fb); interlaced = !!(adj->flags & DRM_MODE_FLAG_INTERLACE); i = armada_drm_crtc_calc_fb(dcrtc->crtc.primary->fb, x, y, regs, interlaced); 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); /* Wait for pending flips to complete */ wait_event(dcrtc->frame_wait, !dcrtc->frame_work); drm_vblank_pre_modeset(crtc->dev, dcrtc->num); crtc->mode = *adj; 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); } /* Now compute the divider for real */ dcrtc->variant->compute_clock(dcrtc, adj, &sclk); /* Ensure graphic fifo is enabled */ armada_reg_queue_mod(regs, i, 0, CFG_PDWN64x66, LCD_SPU_SRAM_PARA1); armada_reg_queue_set(regs, i, sclk, LCD_CFG_SCLK_DIV); if (interlaced ^ dcrtc->interlaced) { if (adj->flags & DRM_MODE_FLAG_INTERLACE) drm_vblank_get(dcrtc->crtc.dev, dcrtc->num); else drm_vblank_put(dcrtc->crtc.dev, dcrtc->num); 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, val, LCD_SPU_GRA_HPXL_VLN); armada_reg_queue_set(regs, i, val, LCD_SPU_GZM_HPXL_VLN); 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 = CFG_GRA_ENA | CFG_GRA_HSMOOTH; val |= CFG_GRA_FMT(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt); val |= CFG_GRA_MOD(drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->mod); if (drm_fb_to_armada_fb(dcrtc->crtc.primary->fb)->fmt > CFG_420) val |= CFG_PALETTE_ENA; if (interlaced) val |= CFG_GRA_FTOGGLE; armada_reg_queue_mod(regs, i, val, CFG_GRAFORMAT | CFG_GRA_MOD(CFG_SWAPRB | CFG_SWAPUV | CFG_SWAPYU | CFG_YUV2RGB) | CFG_PALETTE_ENA | CFG_GRA_FTOGGLE, LCD_SPU_DMA_CTRL0); 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); val = dcrtc->spu_iopad_ctrl | armada_drm_crtc_calculate_csc(dcrtc); armada_reg_queue_set(regs, i, val, LCD_SPU_IOPAD_CONTROL); armada_reg_queue_end(regs, i); armada_drm_crtc_update_regs(dcrtc, regs); spin_unlock_irqrestore(&dcrtc->irq_lock, flags); armada_drm_crtc_update(dcrtc); drm_vblank_post_modeset(crtc->dev, dcrtc->num); armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms)); return 0; } /* The mode_config.mutex will be held for this call */ static int armada_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, struct drm_framebuffer *old_fb) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct armada_regs regs[4]; unsigned i; i = armada_drm_crtc_calc_fb(crtc->primary->fb, crtc->x, crtc->y, regs, dcrtc->interlaced); armada_reg_queue_end(regs, i); /* Wait for pending flips to complete */ wait_event(dcrtc->frame_wait, !dcrtc->frame_work); /* Take a reference to the new fb as we're using it */ drm_framebuffer_reference(crtc->primary->fb); /* Update the base in the CRTC */ armada_drm_crtc_update_regs(dcrtc, regs); /* Drop our previously held reference */ armada_drm_crtc_finish_fb(dcrtc, old_fb, dpms_blanked(dcrtc->dpms)); return 0; } static void armada_drm_crtc_load_lut(struct drm_crtc *crtc) { } /* The mode_config.mutex will be held for this call */ static void armada_drm_crtc_disable(struct drm_crtc *crtc) { struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); armada_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); armada_drm_crtc_finish_fb(dcrtc, crtc->primary->fb, true); /* Power down most RAMs and FIFOs */ writel_relaxed(CFG_PDWN256x32 | CFG_PDWN256x24 | CFG_PDWN256x8 | CFG_PDWN32x32 | CFG_PDWN16x66 | CFG_PDWN32x66 | CFG_PDWN64x66, dcrtc->base + LCD_SPU_SRAM_PARA1); } 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 = armada_drm_crtc_mode_set, .mode_set_base = armada_drm_crtc_mode_set_base, .load_lut = armada_drm_crtc_load_lut, .disable = armada_drm_crtc_disable, }; 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; } 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); /* * 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 drm_device *dev = crtc->dev; 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(dev, file, handle); if (!obj) return -ENOENT; /* Must be a kernel-mapped object */ if (!obj->addr) { drm_gem_object_unreference_unlocked(&obj->obj); return -EINVAL; } if (obj->obj.size < w * h * 4) { DRM_ERROR("buffer is too small\n"); drm_gem_object_unreference_unlocked(&obj->obj); return -ENOMEM; } } mutex_lock(&dev->struct_mutex); if (dcrtc->cursor_obj) { dcrtc->cursor_obj->update = NULL; dcrtc->cursor_obj->update_data = NULL; drm_gem_object_unreference(&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; } mutex_unlock(&dev->struct_mutex); return ret; } static int armada_drm_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) { struct drm_device *dev = crtc->dev; 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; mutex_lock(&dev->struct_mutex); dcrtc->cursor_x = x; dcrtc->cursor_y = y; ret = armada_drm_crtc_cursor_update(dcrtc, false); mutex_unlock(&dev->struct_mutex); 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_unreference(&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); 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 armada_crtc *dcrtc = drm_to_armada_crtc(crtc); struct armada_frame_work *work; struct drm_device *dev = crtc->dev; unsigned long flags; unsigned i; int ret; /* We don't support changing the pixel format */ if (fb->pixel_format != crtc->primary->fb->pixel_format) return -EINVAL; work = kmalloc(sizeof(*work), GFP_KERNEL); if (!work) return -ENOMEM; work->event = event; work->old_fb = dcrtc->crtc.primary->fb; i = armada_drm_crtc_calc_fb(fb, crtc->x, crtc->y, work->regs, dcrtc->interlaced); armada_reg_queue_end(work->regs, i); /* * Hold the old framebuffer for the work - DRM appears to drop our * reference to the old framebuffer in drm_mode_page_flip_ioctl(). */ drm_framebuffer_reference(work->old_fb); ret = armada_drm_crtc_queue_frame_work(dcrtc, work); if (ret) { /* * Undo our reference above; DRM does not drop the reference * to this object on error, so that's okay. */ drm_framebuffer_unreference(work->old_fb); kfree(work); return ret; } /* * Don't take a reference on the new framebuffer; * drm_mode_page_flip_ioctl() has already grabbed a reference and * will _not_ drop that reference on successful return from this * function. Simply mark this new framebuffer as the current one. */ dcrtc->crtc.primary->fb = fb; /* * Finally, if the display is blanked, we won't receive an * interrupt, so complete it now. */ if (dpms_blanked(dcrtc->dpms)) { spin_lock_irqsave(&dev->event_lock, flags); if (dcrtc->frame_work) armada_drm_crtc_complete_frame_work(dcrtc); spin_unlock_irqrestore(&dev->event_lock, flags); } return 0; } static int armada_drm_crtc_set_property(struct drm_crtc *crtc, struct drm_property *property, uint64_t val) { struct armada_private *priv = crtc->dev->dev_private; struct armada_crtc *dcrtc = drm_to_armada_crtc(crtc); bool update_csc = false; if (property == priv->csc_yuv_prop) { dcrtc->csc_yuv_mode = val; update_csc = true; } else if (property == priv->csc_rgb_prop) { dcrtc->csc_rgb_mode = val; update_csc = true; } if (update_csc) { uint32_t val; val = dcrtc->spu_iopad_ctrl | armada_drm_crtc_calculate_csc(dcrtc); writel_relaxed(val, dcrtc->base + LCD_SPU_IOPAD_CONTROL); } return 0; } static struct drm_crtc_funcs armada_crtc_funcs = { .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, .set_property = armada_drm_crtc_set_property, }; static struct drm_prop_enum_list armada_drm_csc_yuv_enum_list[] = { { CSC_AUTO, "Auto" }, { CSC_YUV_CCIR601, "CCIR601" }, { CSC_YUV_CCIR709, "CCIR709" }, }; static struct drm_prop_enum_list armada_drm_csc_rgb_enum_list[] = { { CSC_AUTO, "Auto" }, { CSC_RGB_COMPUTER, "Computer system" }, { CSC_RGB_STUDIO, "Studio" }, }; static int armada_drm_crtc_create_properties(struct drm_device *dev) { struct armada_private *priv = dev->dev_private; if (priv->csc_yuv_prop) return 0; priv->csc_yuv_prop = drm_property_create_enum(dev, 0, "CSC_YUV", armada_drm_csc_yuv_enum_list, ARRAY_SIZE(armada_drm_csc_yuv_enum_list)); priv->csc_rgb_prop = drm_property_create_enum(dev, 0, "CSC_RGB", armada_drm_csc_rgb_enum_list, ARRAY_SIZE(armada_drm_csc_rgb_enum_list)); if (!priv->csc_yuv_prop || !priv->csc_rgb_prop) return -ENOMEM; return 0; } int armada_drm_crtc_create(struct drm_device *drm, struct device *dev, struct resource *res, int irq, const struct armada_variant *variant) { struct armada_private *priv = drm->dev_private; struct armada_crtc *dcrtc; void __iomem *base; int ret; ret = armada_drm_crtc_create_properties(drm); if (ret) return ret; base = devm_request_and_ioremap(dev, res); if (!base) { DRM_ERROR("failed to ioremap register\n"); return -ENOMEM; } 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->csc_yuv_mode = CSC_AUTO; dcrtc->csc_rgb_mode = CSC_AUTO; 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; INIT_LIST_HEAD(&dcrtc->vbl_list); init_waitqueue_head(&dcrtc->frame_wait); /* 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(0x00000000, dcrtc->base + LCD_SPU_GRA_OVSA_HPXL_VLN); writel_relaxed(dcrtc->irq_ena, dcrtc->base + LCD_SPU_IRQ_ENA); 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) { kfree(dcrtc); return ret; } if (dcrtc->variant->init) { ret = dcrtc->variant->init(dcrtc, dev); if (ret) { kfree(dcrtc); return ret; } } /* Ensure AXI pipeline is enabled */ armada_updatel(CFG_ARBFAST_ENA, 0, dcrtc->base + LCD_SPU_DMA_CTRL0); priv->dcrtc[dcrtc->num] = dcrtc; drm_crtc_init(drm, &dcrtc->crtc, &armada_crtc_funcs); drm_crtc_helper_add(&dcrtc->crtc, &armada_crtc_helper_funcs); drm_object_attach_property(&dcrtc->crtc.base, priv->csc_yuv_prop, dcrtc->csc_yuv_mode); drm_object_attach_property(&dcrtc->crtc.base, priv->csc_rgb_prop, dcrtc->csc_rgb_mode); return armada_overlay_plane_create(drm, 1 << dcrtc->num); } 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; 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; match = of_match_device(dev->driver->of_match_table, dev); if (!match) return -ENXIO; variant = match->data; } return armada_drm_crtc_create(drm, dev, res, irq, variant); } 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 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, };