diff options
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 595 |
1 files changed, 0 insertions, 595 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c deleted file mode 100644 index 24183fb93592..000000000000 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ /dev/null @@ -1,595 +0,0 @@ -/* - * rcar_du_crtc.c -- R-Car Display Unit CRTCs - * - * Copyright (C) 2013 Renesas Corporation - * - * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/clk.h> -#include <linux/mutex.h> - -#include <drm/drmP.h> -#include <drm/drm_crtc.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_fb_cma_helper.h> -#include <drm/drm_gem_cma_helper.h> - -#include "rcar_du_crtc.h" -#include "rcar_du_drv.h" -#include "rcar_du_kms.h" -#include "rcar_du_lvds.h" -#include "rcar_du_plane.h" -#include "rcar_du_regs.h" -#include "rcar_du_vga.h" - -#define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) - -static u32 rcar_du_crtc_read(struct rcar_du_crtc *rcrtc, u32 reg) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - - return rcar_du_read(rcdu, rcrtc->mmio_offset + reg); -} - -static void rcar_du_crtc_write(struct rcar_du_crtc *rcrtc, u32 reg, u32 data) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - - rcar_du_write(rcdu, rcrtc->mmio_offset + reg, data); -} - -static void rcar_du_crtc_clr(struct rcar_du_crtc *rcrtc, u32 reg, u32 clr) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - - rcar_du_write(rcdu, rcrtc->mmio_offset + reg, - rcar_du_read(rcdu, rcrtc->mmio_offset + reg) & ~clr); -} - -static void rcar_du_crtc_set(struct rcar_du_crtc *rcrtc, u32 reg, u32 set) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - - rcar_du_write(rcdu, rcrtc->mmio_offset + reg, - rcar_du_read(rcdu, rcrtc->mmio_offset + reg) | set); -} - -static void rcar_du_crtc_clr_set(struct rcar_du_crtc *rcrtc, u32 reg, - u32 clr, u32 set) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - u32 value = rcar_du_read(rcdu, rcrtc->mmio_offset + reg); - - rcar_du_write(rcdu, rcrtc->mmio_offset + reg, (value & ~clr) | set); -} - -static void rcar_du_crtc_set_display_timing(struct rcar_du_crtc *rcrtc) -{ - struct drm_crtc *crtc = &rcrtc->crtc; - struct rcar_du_device *rcdu = crtc->dev->dev_private; - const struct drm_display_mode *mode = &crtc->mode; - unsigned long clk; - u32 value; - u32 div; - - /* Dot clock */ - clk = clk_get_rate(rcdu->clock); - div = DIV_ROUND_CLOSEST(clk, mode->clock * 1000); - div = clamp(div, 1U, 64U) - 1; - - rcar_du_write(rcdu, rcrtc->index ? ESCR2 : ESCR, - ESCR_DCLKSEL_CLKS | div); - rcar_du_write(rcdu, rcrtc->index ? OTAR2 : OTAR, 0); - - /* Signal polarities */ - value = ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : DSMR_VSL) - | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : DSMR_HSL) - | DSMR_DIPM_DE; - rcar_du_crtc_write(rcrtc, DSMR, value); - - /* Display timings */ - rcar_du_crtc_write(rcrtc, HDSR, mode->htotal - mode->hsync_start - 19); - rcar_du_crtc_write(rcrtc, HDER, mode->htotal - mode->hsync_start + - mode->hdisplay - 19); - rcar_du_crtc_write(rcrtc, HSWR, mode->hsync_end - - mode->hsync_start - 1); - rcar_du_crtc_write(rcrtc, HCR, mode->htotal - 1); - - rcar_du_crtc_write(rcrtc, VDSR, mode->vtotal - mode->vsync_end - 2); - rcar_du_crtc_write(rcrtc, VDER, mode->vtotal - mode->vsync_end + - mode->vdisplay - 2); - rcar_du_crtc_write(rcrtc, VSPR, mode->vtotal - mode->vsync_end + - mode->vsync_start - 1); - rcar_du_crtc_write(rcrtc, VCR, mode->vtotal - 1); - - rcar_du_crtc_write(rcrtc, DESR, mode->htotal - mode->hsync_start); - rcar_du_crtc_write(rcrtc, DEWR, mode->hdisplay); -} - -static void rcar_du_crtc_set_routing(struct rcar_du_crtc *rcrtc) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - u32 dorcr = rcar_du_read(rcdu, DORCR); - - dorcr &= ~(DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_MASK); - - /* Set the DU1 pins sources. Select CRTC 0 if explicitly requested and - * CRTC 1 in all other cases to avoid cloning CRTC 0 to DU0 and DU1 by - * default. - */ - if (rcrtc->outputs & (1 << 1) && rcrtc->index == 0) - dorcr |= DORCR_PG2D_DS1; - else - dorcr |= DORCR_PG2T | DORCR_DK2S | DORCR_PG2D_DS2; - - rcar_du_write(rcdu, DORCR, dorcr); -} - -static void __rcar_du_start_stop(struct rcar_du_device *rcdu, bool start) -{ - rcar_du_write(rcdu, DSYSR, - (rcar_du_read(rcdu, DSYSR) & ~(DSYSR_DRES | DSYSR_DEN)) | - (start ? DSYSR_DEN : DSYSR_DRES)); -} - -static void rcar_du_start_stop(struct rcar_du_device *rcdu, bool start) -{ - /* Many of the configuration bits are only updated when the display - * reset (DRES) bit in DSYSR is set to 1, disabling *both* CRTCs. Some - * of those bits could be pre-configured, but others (especially the - * bits related to plane assignment to display timing controllers) need - * to be modified at runtime. - * - * Restart the display controller if a start is requested. Sorry for the - * flicker. It should be possible to move most of the "DRES-update" bits - * setup to driver initialization time and minimize the number of cases - * when the display controller will have to be restarted. - */ - if (start) { - if (rcdu->used_crtcs++ != 0) - __rcar_du_start_stop(rcdu, false); - __rcar_du_start_stop(rcdu, true); - } else { - if (--rcdu->used_crtcs == 0) - __rcar_du_start_stop(rcdu, false); - } -} - -void rcar_du_crtc_route_output(struct drm_crtc *crtc, unsigned int output) -{ - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - - /* Store the route from the CRTC output to the DU output. The DU will be - * configured when starting the CRTC. - */ - rcrtc->outputs |= 1 << output; -} - -void rcar_du_crtc_update_planes(struct drm_crtc *crtc) -{ - struct rcar_du_device *rcdu = crtc->dev->dev_private; - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - struct rcar_du_plane *planes[RCAR_DU_NUM_HW_PLANES]; - unsigned int num_planes = 0; - unsigned int prio = 0; - unsigned int i; - u32 dptsr = 0; - u32 dspr = 0; - - for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) { - struct rcar_du_plane *plane = &rcdu->planes.planes[i]; - unsigned int j; - - if (plane->crtc != &rcrtc->crtc || !plane->enabled) - continue; - - /* Insert the plane in the sorted planes array. */ - for (j = num_planes++; j > 0; --j) { - if (planes[j-1]->zpos <= plane->zpos) - break; - planes[j] = planes[j-1]; - } - - planes[j] = plane; - prio += plane->format->planes * 4; - } - - for (i = 0; i < num_planes; ++i) { - struct rcar_du_plane *plane = planes[i]; - unsigned int index = plane->hwindex; - - prio -= 4; - dspr |= (index + 1) << prio; - dptsr |= DPTSR_PnDK(index) | DPTSR_PnTS(index); - - if (plane->format->planes == 2) { - index = (index + 1) % 8; - - prio -= 4; - dspr |= (index + 1) << prio; - dptsr |= DPTSR_PnDK(index) | DPTSR_PnTS(index); - } - } - - /* Select display timing and dot clock generator 2 for planes associated - * with superposition controller 2. - */ - if (rcrtc->index) { - u32 value = rcar_du_read(rcdu, DPTSR); - - /* The DPTSR register is updated when the display controller is - * stopped. We thus need to restart the DU. Once again, sorry - * for the flicker. One way to mitigate the issue would be to - * pre-associate planes with CRTCs (either with a fixed 4/4 - * split, or through a module parameter). Flicker would then - * occur only if we need to break the pre-association. - */ - if (value != dptsr) { - rcar_du_write(rcdu, DPTSR, dptsr); - if (rcdu->used_crtcs) { - __rcar_du_start_stop(rcdu, false); - __rcar_du_start_stop(rcdu, true); - } - } - } - - rcar_du_write(rcdu, rcrtc->index ? DS2PR : DS1PR, dspr); -} - -static void rcar_du_crtc_start(struct rcar_du_crtc *rcrtc) -{ - struct drm_crtc *crtc = &rcrtc->crtc; - struct rcar_du_device *rcdu = crtc->dev->dev_private; - unsigned int i; - - if (rcrtc->started) - return; - - if (WARN_ON(rcrtc->plane->format == NULL)) - return; - - /* Set display off and background to black */ - rcar_du_crtc_write(rcrtc, DOOR, DOOR_RGB(0, 0, 0)); - rcar_du_crtc_write(rcrtc, BPOR, BPOR_RGB(0, 0, 0)); - - /* Configure display timings and output routing */ - rcar_du_crtc_set_display_timing(rcrtc); - rcar_du_crtc_set_routing(rcrtc); - - mutex_lock(&rcdu->planes.lock); - rcrtc->plane->enabled = true; - rcar_du_crtc_update_planes(crtc); - mutex_unlock(&rcdu->planes.lock); - - /* Setup planes. */ - for (i = 0; i < ARRAY_SIZE(rcdu->planes.planes); ++i) { - struct rcar_du_plane *plane = &rcdu->planes.planes[i]; - - if (plane->crtc != crtc || !plane->enabled) - continue; - - rcar_du_plane_setup(plane); - } - - /* Select master sync mode. This enables display operation in master - * sync mode (with the HSYNC and VSYNC signals configured as outputs and - * actively driven). - */ - rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK, DSYSR_TVM_MASTER); - - rcar_du_start_stop(rcdu, true); - - rcrtc->started = true; -} - -static void rcar_du_crtc_stop(struct rcar_du_crtc *rcrtc) -{ - struct drm_crtc *crtc = &rcrtc->crtc; - struct rcar_du_device *rcdu = crtc->dev->dev_private; - - if (!rcrtc->started) - return; - - mutex_lock(&rcdu->planes.lock); - rcrtc->plane->enabled = false; - rcar_du_crtc_update_planes(crtc); - mutex_unlock(&rcdu->planes.lock); - - /* Select switch sync mode. This stops display operation and configures - * the HSYNC and VSYNC signals as inputs. - */ - rcar_du_crtc_clr_set(rcrtc, DSYSR, DSYSR_TVM_MASK, DSYSR_TVM_SWITCH); - - rcar_du_start_stop(rcdu, false); - - rcrtc->started = false; -} - -void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - - rcar_du_crtc_stop(rcrtc); - rcar_du_put(rcdu); -} - -void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc) -{ - struct rcar_du_device *rcdu = rcrtc->crtc.dev->dev_private; - - if (rcrtc->dpms != DRM_MODE_DPMS_ON) - return; - - rcar_du_get(rcdu); - rcar_du_crtc_start(rcrtc); -} - -static void rcar_du_crtc_update_base(struct rcar_du_crtc *rcrtc) -{ - struct drm_crtc *crtc = &rcrtc->crtc; - - rcar_du_plane_compute_base(rcrtc->plane, crtc->fb); - rcar_du_plane_update_base(rcrtc->plane); -} - -static void rcar_du_crtc_dpms(struct drm_crtc *crtc, int mode) -{ - struct rcar_du_device *rcdu = crtc->dev->dev_private; - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - - if (rcrtc->dpms == mode) - return; - - if (mode == DRM_MODE_DPMS_ON) { - rcar_du_get(rcdu); - rcar_du_crtc_start(rcrtc); - } else { - rcar_du_crtc_stop(rcrtc); - rcar_du_put(rcdu); - } - - rcrtc->dpms = mode; -} - -static bool rcar_du_crtc_mode_fixup(struct drm_crtc *crtc, - const struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - /* TODO Fixup modes */ - return true; -} - -static void rcar_du_crtc_mode_prepare(struct drm_crtc *crtc) -{ - struct rcar_du_device *rcdu = crtc->dev->dev_private; - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - - /* We need to access the hardware during mode set, acquire a reference - * to the DU. - */ - rcar_du_get(rcdu); - - /* Stop the CRTC and release the plane. Force the DPMS mode to off as a - * result. - */ - rcar_du_crtc_stop(rcrtc); - rcar_du_plane_release(rcrtc->plane); - - rcrtc->dpms = DRM_MODE_DPMS_OFF; -} - -static int rcar_du_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 *old_fb) -{ - struct rcar_du_device *rcdu = crtc->dev->dev_private; - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - const struct rcar_du_format_info *format; - int ret; - - format = rcar_du_format_info(crtc->fb->pixel_format); - if (format == NULL) { - dev_dbg(rcdu->dev, "mode_set: unsupported format %08x\n", - crtc->fb->pixel_format); - ret = -EINVAL; - goto error; - } - - ret = rcar_du_plane_reserve(rcrtc->plane, format); - if (ret < 0) - goto error; - - rcrtc->plane->format = format; - rcrtc->plane->pitch = crtc->fb->pitches[0]; - - rcrtc->plane->src_x = x; - rcrtc->plane->src_y = y; - rcrtc->plane->width = mode->hdisplay; - rcrtc->plane->height = mode->vdisplay; - - rcar_du_plane_compute_base(rcrtc->plane, crtc->fb); - - rcrtc->outputs = 0; - - return 0; - -error: - /* There's no rollback/abort operation to clean up in case of error. We - * thus need to release the reference to the DU acquired in prepare() - * here. - */ - rcar_du_put(rcdu); - return ret; -} - -static void rcar_du_crtc_mode_commit(struct drm_crtc *crtc) -{ - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - - /* We're done, restart the CRTC and set the DPMS mode to on. The - * reference to the DU acquired at prepare() time will thus be released - * by the DPMS handler (possibly called by the disable() handler). - */ - rcar_du_crtc_start(rcrtc); - rcrtc->dpms = DRM_MODE_DPMS_ON; -} - -static int rcar_du_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, - struct drm_framebuffer *old_fb) -{ - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - - rcrtc->plane->src_x = x; - rcrtc->plane->src_y = y; - - rcar_du_crtc_update_base(to_rcar_crtc(crtc)); - - return 0; -} - -static void rcar_du_crtc_disable(struct drm_crtc *crtc) -{ - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - - rcar_du_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); - rcar_du_plane_release(rcrtc->plane); -} - -static const struct drm_crtc_helper_funcs crtc_helper_funcs = { - .dpms = rcar_du_crtc_dpms, - .mode_fixup = rcar_du_crtc_mode_fixup, - .prepare = rcar_du_crtc_mode_prepare, - .commit = rcar_du_crtc_mode_commit, - .mode_set = rcar_du_crtc_mode_set, - .mode_set_base = rcar_du_crtc_mode_set_base, - .disable = rcar_du_crtc_disable, -}; - -void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc, - struct drm_file *file) -{ - struct drm_pending_vblank_event *event; - struct drm_device *dev = rcrtc->crtc.dev; - unsigned long flags; - - /* Destroy the pending vertical blanking event associated with the - * pending page flip, if any, and disable vertical blanking interrupts. - */ - spin_lock_irqsave(&dev->event_lock, flags); - event = rcrtc->event; - if (event && event->base.file_priv == file) { - rcrtc->event = NULL; - event->base.destroy(&event->base); - drm_vblank_put(dev, rcrtc->index); - } - spin_unlock_irqrestore(&dev->event_lock, flags); -} - -static void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc) -{ - struct drm_pending_vblank_event *event; - struct drm_device *dev = rcrtc->crtc.dev; - unsigned long flags; - - spin_lock_irqsave(&dev->event_lock, flags); - event = rcrtc->event; - rcrtc->event = NULL; - spin_unlock_irqrestore(&dev->event_lock, flags); - - if (event == NULL) - return; - - spin_lock_irqsave(&dev->event_lock, flags); - drm_send_vblank_event(dev, rcrtc->index, event); - spin_unlock_irqrestore(&dev->event_lock, flags); - - drm_vblank_put(dev, rcrtc->index); -} - -static int rcar_du_crtc_page_flip(struct drm_crtc *crtc, - struct drm_framebuffer *fb, - struct drm_pending_vblank_event *event) -{ - struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc); - struct drm_device *dev = rcrtc->crtc.dev; - unsigned long flags; - - spin_lock_irqsave(&dev->event_lock, flags); - if (rcrtc->event != NULL) { - spin_unlock_irqrestore(&dev->event_lock, flags); - return -EBUSY; - } - spin_unlock_irqrestore(&dev->event_lock, flags); - - crtc->fb = fb; - rcar_du_crtc_update_base(rcrtc); - - if (event) { - event->pipe = rcrtc->index; - drm_vblank_get(dev, rcrtc->index); - spin_lock_irqsave(&dev->event_lock, flags); - rcrtc->event = event; - spin_unlock_irqrestore(&dev->event_lock, flags); - } - - return 0; -} - -static const struct drm_crtc_funcs crtc_funcs = { - .destroy = drm_crtc_cleanup, - .set_config = drm_crtc_helper_set_config, - .page_flip = rcar_du_crtc_page_flip, -}; - -int rcar_du_crtc_create(struct rcar_du_device *rcdu, unsigned int index) -{ - struct rcar_du_crtc *rcrtc = &rcdu->crtcs[index]; - struct drm_crtc *crtc = &rcrtc->crtc; - int ret; - - rcrtc->mmio_offset = index ? DISP2_REG_OFFSET : 0; - rcrtc->index = index; - rcrtc->dpms = DRM_MODE_DPMS_OFF; - rcrtc->plane = &rcdu->planes.planes[index]; - - rcrtc->plane->crtc = crtc; - - ret = drm_crtc_init(rcdu->ddev, crtc, &crtc_funcs); - if (ret < 0) - return ret; - - drm_crtc_helper_add(crtc, &crtc_helper_funcs); - - return 0; -} - -void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable) -{ - if (enable) { - rcar_du_crtc_write(rcrtc, DSRCR, DSRCR_VBCL); - rcar_du_crtc_set(rcrtc, DIER, DIER_VBE); - } else { - rcar_du_crtc_clr(rcrtc, DIER, DIER_VBE); - } -} - -void rcar_du_crtc_irq(struct rcar_du_crtc *rcrtc) -{ - u32 status; - - status = rcar_du_crtc_read(rcrtc, DSSR); - rcar_du_crtc_write(rcrtc, DSRCR, status & DSRCR_MASK); - - if (status & DSSR_VBK) { - drm_handle_vblank(rcrtc->crtc.dev, rcrtc->index); - rcar_du_crtc_finish_page_flip(rcrtc); - } -} |