From patchwork Tue Jun 30 21:27:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Chrisanthus, Anitha" X-Patchwork-Id: 11635055 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E53E3618 for ; Tue, 30 Jun 2020 21:31:03 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CD8C32065D for ; Tue, 30 Jun 2020 21:31:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CD8C32065D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 88C2E6E4B0; Tue, 30 Jun 2020 21:29:52 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 73E256E32A; Tue, 30 Jun 2020 21:28:53 +0000 (UTC) IronPort-SDR: FUBi53GESqYx75jPcRNtULB2ob1tPYucAYDBhccRRVEYEiTSAdy2+hGf9SdTmW8AOiWi8v/0vN G+lOloKKeKMA== X-IronPort-AV: E=McAfee;i="6000,8403,9668"; a="133846926" X-IronPort-AV: E=Sophos;i="5.75,298,1589266800"; d="scan'208";a="133846926" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jun 2020 14:28:53 -0700 IronPort-SDR: TCIAhEdCRqZMgygjluXkTjr51d6OrgEeD7EtyZ77R8kcifJiQ7VdJtP1/suGUUhmurFYaaRfMy 8Zpav3yKSRlQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,298,1589266800"; d="scan'208";a="481066807" Received: from hdwiyono-mobl.amr.corp.intel.com (HELO achrisan-DESK2.amr.corp.intel.com) ([10.254.176.225]) by fmsmga006.fm.intel.com with ESMTP; 30 Jun 2020 14:28:52 -0700 From: Anitha Chrisanthus To: dri-devel@lists.freedesktop.org, anitha.chrisanthus@intel.com, bob.j.paauwe@intel.com, edmund.j.dea@intel.com Date: Tue, 30 Jun 2020 14:27:57 -0700 Message-Id: <1593552491-23698-46-git-send-email-anitha.chrisanthus@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1593552491-23698-1-git-send-email-anitha.chrisanthus@intel.com> References: <1593552491-23698-1-git-send-email-anitha.chrisanthus@intel.com> Subject: [Intel-gfx] [PATCH 45/59] drm/kmb: Enable LCD interrupts X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: daniel.vetter@intel.com, intel-gfx@lists.freedesktop.org MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Enabled vblank interrupts for LCD. Signed-off-by: Anitha Chrisanithus Reviewed-by: Bob Paauwe --- drivers/gpu/drm/kmb/kmb_crtc.c | 35 +++++++++++++++-------------------- drivers/gpu/drm/kmb/kmb_drv.c | 41 +++++++++++++++++++++-------------------- drivers/gpu/drm/kmb/kmb_plane.c | 6 +++--- drivers/gpu/drm/kmb/kmb_regs.h | 2 +- 4 files changed, 40 insertions(+), 44 deletions(-) diff --git a/drivers/gpu/drm/kmb/kmb_crtc.c b/drivers/gpu/drm/kmb/kmb_crtc.c index 75e78d7..b617507 100644 --- a/drivers/gpu/drm/kmb/kmb_crtc.c +++ b/drivers/gpu/drm/kmb/kmb_crtc.c @@ -61,7 +61,8 @@ static int kmb_crtc_enable_vblank(struct drm_crtc *crtc) kmb_write_lcd(dev->dev_private, LCD_VSTATUS_COMPARE, LCD_VSTATUS_COMPARE_VSYNC); /* enable vertical interrupt */ - kmb_write_lcd(dev->dev_private, LCD_INT_ENABLE, LCD_INT_VERT_COMP); + kmb_set_bitmask_lcd(dev->dev_private, LCD_INT_ENABLE, + LCD_INT_VERT_COMP); return 0; } @@ -72,13 +73,9 @@ static void kmb_crtc_disable_vblank(struct drm_crtc *crtc) /*clear interrupt */ kmb_write_lcd(dev->dev_private, LCD_INT_CLEAR, LCD_INT_VERT_COMP); /* disable vertical interrupt */ - kmb_write_lcd(dev->dev_private, LCD_INT_ENABLE, 0); + kmb_clr_bitmask_lcd(dev->dev_private, LCD_INT_ENABLE, + LCD_INT_VERT_COMP); -/* TBD - * set the BIT2 (VERTICAL_COMPARE_INTERRUPT) of the LCD_INT_ENABLE register - * set the required bit LCD_VSTATUS_COMPARE register - * Not sure if anything needs to be done in the ICB - */ } static const struct drm_crtc_funcs kmb_crtc_funcs = { @@ -100,7 +97,7 @@ static void kmb_crtc_mode_set_nofb(struct drm_crtc *crtc) struct videomode vm; int vsync_start_offset; int vsync_end_offset; -#endif + /* initialize mipi */ kmb_dsi_hw_init(dev, m); DRM_INFO("vfp= %d vbp= %d vsyc_len=%d hfp=%d hbp=%d hsync_len=%d\n", @@ -110,7 +107,6 @@ static void kmb_crtc_mode_set_nofb(struct drm_crtc *crtc) m->crtc_hsync_start - m->crtc_hdisplay, m->crtc_htotal - m->crtc_hsync_end, m->crtc_hsync_end - m->crtc_hsync_start); -#ifdef LCD_TEST // vm.vfront_porch = m->crtc_vsync_start - m->crtc_vdisplay; vm.vfront_porch = 2; // vm.vback_porch = m->crtc_vtotal - m->crtc_vsync_end; @@ -174,7 +170,7 @@ static void kmb_crtc_atomic_enable(struct drm_crtc *crtc, clk_prepare_enable(lcd->clk); kmb_crtc_mode_set_nofb(crtc); -// drm_crtc_vblank_on(crtc); + drm_crtc_vblank_on(crtc); } static void kmb_crtc_atomic_disable(struct drm_crtc *crtc, @@ -185,33 +181,32 @@ static void kmb_crtc_atomic_disable(struct drm_crtc *crtc, /* always disable planes on the CRTC that is being turned off */ drm_atomic_helper_disable_planes_on_crtc(old_state, false); -// drm_crtc_vblank_off(crtc); + drm_crtc_vblank_off(crtc); clk_disable_unprepare(lcd->clk); } static void kmb_crtc_atomic_begin(struct drm_crtc *crtc, struct drm_crtc_state *state) { - /* TBD */ - /*disable vblank interrupts here - * clear BIT 2 (VERTICAL_COMPARE_INTERRUPT) LCD_INT_ENABLE - */ + struct drm_device *dev = crtc->dev; + + kmb_clr_bitmask_lcd(dev->dev_private, LCD_INT_ENABLE, + LCD_INT_VERT_COMP); } static void kmb_crtc_atomic_flush(struct drm_crtc *crtc, struct drm_crtc_state *state) { - /* TBD */ - /*enable vblank interrupts after - * set BIT 2 (VERTICAL_COMPARE_INTERRUPT) LCD_INT_ENABLE - */ + struct drm_device *dev = crtc->dev; + + kmb_set_bitmask_lcd(dev->dev_private, LCD_INT_ENABLE, + LCD_INT_VERT_COMP); spin_lock_irq(&crtc->dev->event_lock); if (crtc->state->event) drm_crtc_send_vblank_event(crtc, crtc->state->event); crtc->state->event = NULL; spin_unlock_irq(&crtc->dev->event_lock); - } static const struct drm_crtc_helper_funcs kmb_crtc_helper_funcs = { diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c index 64e45e7..d987529 100644 --- a/drivers/gpu/drm/kmb/kmb_drv.c +++ b/drivers/gpu/drm/kmb/kmb_drv.c @@ -147,10 +147,8 @@ static int kmb_load(struct drm_device *drm, unsigned long flags) { struct kmb_drm_private *dev_p = drm->dev_private; struct platform_device *pdev = to_platform_device(drm->dev); -#ifdef WIP /*u32 version;*/ - int irq_lcd, irq_mipi; -#endif + int irq_lcd;// irq_mipi; int ret = 0; unsigned long clk; @@ -286,10 +284,9 @@ static int kmb_load(struct drm_device *drm, unsigned long flags) kmb_set_bitmask_msscam(dev_p, MSS_CAM_CLK_CTRL, 0x1fff); kmb_set_bitmask_msscam(dev_p, MSS_CAM_RSTN_CTRL, 0xffffffff); #endif //KMB_CLOCKS -#ifdef WIP /* Register irqs here - section 17.3 in databook * lists LCD at 79 and 82 for MIPI under MSS CPU - - * firmware has to redirect it to A53 + * firmware has redirected 79 to A53 IRQ 33 */ DRM_INFO("platform_get_irq_byname %pOF\n", drm->dev->of_node); @@ -299,14 +296,12 @@ static int kmb_load(struct drm_device *drm, unsigned long flags) irq_lcd = platform_get_irq_byname(pdev, "irq_lcd"); if (irq_lcd < 0) { DRM_ERROR("irq_lcd not found"); - return irq_lcd; + goto setup_fail; } pr_info("irq_lcd platform_get_irq = %d\n", irq_lcd); - ret = request_irq(irq_lcd, kmb_isr, IRQF_SHARED, "irq_lcd", dev_p); - dev_p->irq_lcd = irq_lcd; - +#ifdef WIP /* Allocate MIPI interrupt resources, enable interrupt line, * and setup IRQ handling */ @@ -342,19 +337,16 @@ static int kmb_load(struct drm_device *drm, unsigned long flags) DRM_ERROR("failed to initialize DSI\n"); goto setup_fail; } -#ifdef WIP - ret = drm_irq_install(drm, platform_get_irq(pdev, 0)); + ret = drm_irq_install(drm, irq_lcd); if (ret < 0) { DRM_ERROR("failed to install IRQ handler\n"); goto irq_fail; } -#endif + dev_p->irq_lcd = irq_lcd; return 0; -#ifdef WIP irq_fail: drm_crtc_cleanup(&dev_p->crtc); -#endif setup_fail: of_reserved_mem_device_release(drm->dev); @@ -400,6 +392,11 @@ static irqreturn_t handle_lcd_irq(struct drm_device *dev) kmb_write_lcd(dev->dev_private, LCD_INT_CLEAR, LCD_INT_LINE_CMP); } + if (status & LCD_INT_LAYER) { + /* clear layer interrupts */ + kmb_write_lcd(dev->dev_private, LCD_INT_CLEAR, LCD_INT_LAYER); + } + if (status & LCD_INT_VERT_COMP) { /* read VSTATUS */ val = kmb_read_lcd(dev->dev_private, LCD_VSTATUS); @@ -419,23 +416,20 @@ static irqreturn_t handle_lcd_irq(struct drm_device *dev) return IRQ_HANDLED; } +#ifdef MIPI_IRQ static irqreturn_t handle_mipi_irq(struct drm_device *dev) { mipi_tx_handle_irqs(dev->dev_private); return IRQ_HANDLED; } +#endif static irqreturn_t kmb_isr(int irq, void *arg) { struct drm_device *dev = (struct drm_device *)arg; - struct kmb_drm_private *dev_p = dev->dev_private; irqreturn_t ret = IRQ_NONE; - if (irq == dev_p->irq_lcd) - ret = handle_lcd_irq(dev); - else if (irq == dev_p->irq_mipi) - ret = handle_mipi_irq(dev); - + ret = handle_lcd_irq(dev); return ret; } @@ -566,6 +560,12 @@ static int kmb_probe(struct platform_device *pdev) /* Set the CRTC's port so that the encoder component can find it */ lcd->crtc.port = of_graph_get_port_by_id(dev->of_node, 0); + ret = drm_vblank_init(drm, drm->mode_config.num_crtc); + DRM_INFO("mode_config.num_crtc=%d\n", drm->mode_config.num_crtc); + if (ret < 0) { + DRM_ERROR("failed to initialize vblank\n"); + goto err_vblank; + } drm_mode_config_reset(drm); drm_kms_helper_poll_init(drm); @@ -582,6 +582,7 @@ static int kmb_probe(struct platform_device *pdev) err_register: drm_kms_helper_poll_fini(drm); +err_vblank: pm_runtime_disable(drm->dev); err_free: drm_mode_config_cleanup(drm); diff --git a/drivers/gpu/drm/kmb/kmb_plane.c b/drivers/gpu/drm/kmb/kmb_plane.c index 3cd9b0d..1990e8c 100644 --- a/drivers/gpu/drm/kmb/kmb_plane.c +++ b/drivers/gpu/drm/kmb/kmb_plane.c @@ -175,9 +175,9 @@ static void kmb_plane_atomic_disable(struct drm_plane *plane, break; } - kmb_write_lcd(dev_p, LCD_LAYERn_DMA_CFG(plane_id), - ~LCD_DMA_LAYER_ENABLE); - kmb_write_lcd(dev_p, LCD_CONTROL, ~ctrl); + kmb_clr_bitmask_lcd(dev_p, LCD_LAYERn_DMA_CFG(plane_id), + LCD_DMA_LAYER_ENABLE); + kmb_clr_bitmask_lcd(dev_p, LCD_CONTROL, ctrl); } diff --git a/drivers/gpu/drm/kmb/kmb_regs.h b/drivers/gpu/drm/kmb/kmb_regs.h index c80646a..0249ea5 100644 --- a/drivers/gpu/drm/kmb/kmb_regs.h +++ b/drivers/gpu/drm/kmb/kmb_regs.h @@ -107,7 +107,7 @@ #define LAYER3_DMA_IDLE (1<<24) #define LAYER3_DMA_FIFO_OVERFLOW (1<<25) #define LAYER3_DMA_FIFO_UNDERFLOW (1<<26) - +#define LCD_INT_LAYER (0x07fffff8) #define LCD_INT_ENABLE (0x4 * 0x002) #define LCD_INT_CLEAR (0x4 * 0x003) #define LCD_LINE_COUNT (0x4 * 0x004)