diff options
Diffstat (limited to 'drivers/gpu/drm/tve200/tve200_display.c')
| -rw-r--r-- | drivers/gpu/drm/tve200/tve200_display.c | 53 |
1 files changed, 36 insertions, 17 deletions
diff --git a/drivers/gpu/drm/tve200/tve200_display.c b/drivers/gpu/drm/tve200/tve200_display.c index e8723a2412a6..26b6c65ef6fd 100644 --- a/drivers/gpu/drm/tve200/tve200_display.c +++ b/drivers/gpu/drm/tve200/tve200_display.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2017 Linus Walleij <linus.walleij@linaro.org> * Parts of this file were based on sources as follows: @@ -7,22 +8,21 @@ * Copyright (C) 2007 Dave Airlie <airlied@linux.ie> * Copyright (C) 2011 Texas Instruments * Copyright (C) 2017 Eric Anholt - * - * This program is free software and is provided to you under the terms of the - * GNU General Public License version 2 as published by the Free Software - * Foundation, and any use by you of this program is subject to the terms of - * such GNU licence. */ + #include <linux/clk.h> -#include <linux/version.h> #include <linux/dma-buf.h> #include <linux/of_graph.h> +#include <linux/delay.h> -#include <drm/drmP.h> +#include <drm/drm_fb_dma_helper.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem_atomic_helper.h> +#include <drm/drm_gem_dma_helper.h> #include <drm/drm_panel.h> -#include <drm/drm_gem_cma_helper.h> -#include <drm/drm_gem_framebuffer_helper.h> -#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_print.h> +#include <drm/drm_vblank.h> #include "tve200_drm.h" @@ -91,7 +91,7 @@ static int tve200_display_check(struct drm_simple_display_pipe *pipe, } if (fb) { - u32 offset = drm_fb_cma_get_gem_addr(fb, pstate, 0); + u32 offset = drm_fb_dma_get_gem_addr(fb, pstate, 0); /* FB base address must be dword aligned. */ if (offset & 3) { @@ -132,9 +132,25 @@ static void tve200_display_enable(struct drm_simple_display_pipe *pipe, struct drm_connector *connector = priv->connector; u32 format = fb->format->format; u32 ctrl1 = 0; + int retries; clk_prepare_enable(priv->clk); + /* Reset the TVE200 and wait for it to come back online */ + writel(TVE200_CTRL_4_RESET, priv->regs + TVE200_CTRL_4); + for (retries = 0; retries < 5; retries++) { + usleep_range(30000, 50000); + if (readl(priv->regs + TVE200_CTRL_4) & TVE200_CTRL_4_RESET) + continue; + else + break; + } + if (retries == 5 && + readl(priv->regs + TVE200_CTRL_4) & TVE200_CTRL_4_RESET) { + dev_err(drm->dev, "can't get hardware out of reset\n"); + return; + } + /* Function 1 */ ctrl1 |= TVE200_CTRL_CSMODE; /* Interlace mode for CCIR656: parameterize? */ @@ -149,7 +165,8 @@ static void tve200_display_enable(struct drm_simple_display_pipe *pipe, /* Vsync IRQ at start of Vsync at first */ ctrl1 |= TVE200_VSTSTYPE_VSYNC; - if (connector->display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE) + if (connector->display_info.bus_flags & + DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE) ctrl1 |= TVE200_CTRL_TVCLKP; if ((mode->hdisplay == 352 && mode->vdisplay == 240) || /* SIF(525) */ @@ -231,8 +248,9 @@ static void tve200_display_disable(struct drm_simple_display_pipe *pipe) drm_crtc_vblank_off(crtc); - /* Disable and Power Down */ + /* Disable put into reset and Power Down */ writel(0, priv->regs + TVE200_CTRL); + writel(TVE200_CTRL_4_RESET, priv->regs + TVE200_CTRL_4); clk_disable_unprepare(priv->clk); } @@ -250,14 +268,14 @@ static void tve200_display_update(struct drm_simple_display_pipe *pipe, if (fb) { /* For RGB, the Y component is used as base address */ - writel(drm_fb_cma_get_gem_addr(fb, pstate, 0), + writel(drm_fb_dma_get_gem_addr(fb, pstate, 0), priv->regs + TVE200_Y_FRAME_BASE_ADDR); /* For three plane YUV we need two more addresses */ if (fb->format->format == DRM_FORMAT_YUV420) { - writel(drm_fb_cma_get_gem_addr(fb, pstate, 1), + writel(drm_fb_dma_get_gem_addr(fb, pstate, 1), priv->regs + TVE200_U_FRAME_BASE_ADDR); - writel(drm_fb_cma_get_gem_addr(fb, pstate, 2), + writel(drm_fb_dma_get_gem_addr(fb, pstate, 2), priv->regs + TVE200_V_FRAME_BASE_ADDR); } } @@ -280,6 +298,8 @@ static int tve200_display_enable_vblank(struct drm_simple_display_pipe *pipe) struct drm_device *drm = crtc->dev; struct tve200_drm_dev_private *priv = drm->dev_private; + /* Clear any IRQs and enable */ + writel(0xFF, priv->regs + TVE200_INT_CLR); writel(TVE200_INT_V_STATUS, priv->regs + TVE200_INT_EN); return 0; } @@ -298,7 +318,6 @@ static const struct drm_simple_display_pipe_funcs tve200_display_funcs = { .enable = tve200_display_enable, .disable = tve200_display_disable, .update = tve200_display_update, - .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, .enable_vblank = tve200_display_enable_vblank, .disable_vblank = tve200_display_disable_vblank, }; |