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5518572dce
Drop the DRM IRQ midlayer in favor of Linux IRQ interfaces. DRM's IRQ helpers are mostly useful for UMS drivers. Modern KMS drivers don't benefit from using it. DRM IRQ callbacks are now being called directly or inlined. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210803090704.32152-11-tzimmermann@suse.de
164 lines
4 KiB
C
164 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
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* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
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*/
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#include <linux/platform_device.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_print.h>
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#include "tidss_crtc.h"
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#include "tidss_dispc.h"
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#include "tidss_drv.h"
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#include "tidss_irq.h"
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#include "tidss_plane.h"
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/* call with wait_lock and dispc runtime held */
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static void tidss_irq_update(struct tidss_device *tidss)
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{
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assert_spin_locked(&tidss->wait_lock);
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dispc_set_irqenable(tidss->dispc, tidss->irq_mask);
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}
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void tidss_irq_enable_vblank(struct drm_crtc *crtc)
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{
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struct drm_device *ddev = crtc->dev;
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struct tidss_device *tidss = to_tidss(ddev);
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struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
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u32 hw_videoport = tcrtc->hw_videoport;
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unsigned long flags;
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spin_lock_irqsave(&tidss->wait_lock, flags);
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tidss->irq_mask |= DSS_IRQ_VP_VSYNC_EVEN(hw_videoport) |
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DSS_IRQ_VP_VSYNC_ODD(hw_videoport);
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tidss_irq_update(tidss);
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spin_unlock_irqrestore(&tidss->wait_lock, flags);
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}
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void tidss_irq_disable_vblank(struct drm_crtc *crtc)
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{
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struct drm_device *ddev = crtc->dev;
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struct tidss_device *tidss = to_tidss(ddev);
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struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
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u32 hw_videoport = tcrtc->hw_videoport;
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unsigned long flags;
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spin_lock_irqsave(&tidss->wait_lock, flags);
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tidss->irq_mask &= ~(DSS_IRQ_VP_VSYNC_EVEN(hw_videoport) |
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DSS_IRQ_VP_VSYNC_ODD(hw_videoport));
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tidss_irq_update(tidss);
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spin_unlock_irqrestore(&tidss->wait_lock, flags);
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}
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static irqreturn_t tidss_irq_handler(int irq, void *arg)
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{
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struct drm_device *ddev = (struct drm_device *)arg;
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struct tidss_device *tidss = to_tidss(ddev);
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unsigned int id;
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dispc_irq_t irqstatus;
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irqstatus = dispc_read_and_clear_irqstatus(tidss->dispc);
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for (id = 0; id < tidss->num_crtcs; id++) {
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struct drm_crtc *crtc = tidss->crtcs[id];
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struct tidss_crtc *tcrtc = to_tidss_crtc(crtc);
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u32 hw_videoport = tcrtc->hw_videoport;
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if (irqstatus & (DSS_IRQ_VP_VSYNC_EVEN(hw_videoport) |
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DSS_IRQ_VP_VSYNC_ODD(hw_videoport)))
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tidss_crtc_vblank_irq(crtc);
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if (irqstatus & (DSS_IRQ_VP_FRAME_DONE(hw_videoport)))
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tidss_crtc_framedone_irq(crtc);
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if (irqstatus & DSS_IRQ_VP_SYNC_LOST(hw_videoport))
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tidss_crtc_error_irq(crtc, irqstatus);
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}
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if (irqstatus & DSS_IRQ_DEVICE_OCP_ERR)
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dev_err_ratelimited(tidss->dev, "OCP error\n");
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return IRQ_HANDLED;
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}
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void tidss_irq_resume(struct tidss_device *tidss)
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{
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unsigned long flags;
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spin_lock_irqsave(&tidss->wait_lock, flags);
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tidss_irq_update(tidss);
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spin_unlock_irqrestore(&tidss->wait_lock, flags);
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}
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static void tidss_irq_preinstall(struct drm_device *ddev)
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{
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struct tidss_device *tidss = to_tidss(ddev);
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spin_lock_init(&tidss->wait_lock);
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tidss_runtime_get(tidss);
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dispc_set_irqenable(tidss->dispc, 0);
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dispc_read_and_clear_irqstatus(tidss->dispc);
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tidss_runtime_put(tidss);
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}
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static void tidss_irq_postinstall(struct drm_device *ddev)
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{
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struct tidss_device *tidss = to_tidss(ddev);
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unsigned long flags;
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unsigned int i;
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tidss_runtime_get(tidss);
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spin_lock_irqsave(&tidss->wait_lock, flags);
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tidss->irq_mask = DSS_IRQ_DEVICE_OCP_ERR;
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for (i = 0; i < tidss->num_crtcs; ++i) {
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struct tidss_crtc *tcrtc = to_tidss_crtc(tidss->crtcs[i]);
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tidss->irq_mask |= DSS_IRQ_VP_SYNC_LOST(tcrtc->hw_videoport);
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tidss->irq_mask |= DSS_IRQ_VP_FRAME_DONE(tcrtc->hw_videoport);
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}
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tidss_irq_update(tidss);
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spin_unlock_irqrestore(&tidss->wait_lock, flags);
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tidss_runtime_put(tidss);
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}
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int tidss_irq_install(struct drm_device *ddev, unsigned int irq)
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{
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int ret;
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if (irq == IRQ_NOTCONNECTED)
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return -ENOTCONN;
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tidss_irq_preinstall(ddev);
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ret = request_irq(irq, tidss_irq_handler, 0, ddev->driver->name, ddev);
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if (ret)
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return ret;
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tidss_irq_postinstall(ddev);
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return 0;
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}
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void tidss_irq_uninstall(struct drm_device *ddev)
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{
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struct tidss_device *tidss = to_tidss(ddev);
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tidss_runtime_get(tidss);
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dispc_set_irqenable(tidss->dispc, 0);
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tidss_runtime_put(tidss);
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free_irq(tidss->irq, ddev);
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}
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