2016-08-18 12:23:01 -06:00
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/*
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* Copyright (C) 2016 Marek Vasut <marex@denx.de>
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*
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* This code is based on drivers/video/fbdev/mxsfb.c :
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* Copyright (C) 2010 Juergen Beisert, Pengutronix
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* Copyright (C) 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright (C) 2008 Embedded Alley Solutions, Inc All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/clk.h>
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#include <linux/component.h>
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#include <linux/list.h>
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#include <linux/of_device.h>
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#include <linux/of_graph.h>
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#include <linux/of_reserved_mem.h>
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#include <linux/pm_runtime.h>
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#include <linux/reservation.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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2017-09-24 06:26:20 -06:00
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#include <drm/drm_gem_framebuffer_helper.h>
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2016-08-18 12:23:01 -06:00
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#include <drm/drm_of.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_simple_kms_helper.h>
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#include "mxsfb_drv.h"
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#include "mxsfb_regs.h"
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enum mxsfb_devtype {
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MXSFB_V3,
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MXSFB_V4,
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};
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static const struct mxsfb_devdata mxsfb_devdata[] = {
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[MXSFB_V3] = {
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.transfer_count = LCDC_V3_TRANSFER_COUNT,
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.cur_buf = LCDC_V3_CUR_BUF,
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.next_buf = LCDC_V3_NEXT_BUF,
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.debug0 = LCDC_V3_DEBUG0,
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.hs_wdth_mask = 0xff,
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.hs_wdth_shift = 24,
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.ipversion = 3,
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},
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[MXSFB_V4] = {
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.transfer_count = LCDC_V4_TRANSFER_COUNT,
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.cur_buf = LCDC_V4_CUR_BUF,
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.next_buf = LCDC_V4_NEXT_BUF,
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.debug0 = LCDC_V4_DEBUG0,
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.hs_wdth_mask = 0x3fff,
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.hs_wdth_shift = 18,
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.ipversion = 4,
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},
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};
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static const uint32_t mxsfb_formats[] = {
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DRM_FORMAT_XRGB8888,
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DRM_FORMAT_RGB565
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};
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static struct mxsfb_drm_private *
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drm_pipe_to_mxsfb_drm_private(struct drm_simple_display_pipe *pipe)
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{
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return container_of(pipe, struct mxsfb_drm_private, pipe);
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}
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void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb)
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{
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if (mxsfb->clk_axi)
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clk_prepare_enable(mxsfb->clk_axi);
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}
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void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb)
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{
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if (mxsfb->clk_axi)
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clk_disable_unprepare(mxsfb->clk_axi);
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}
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static const struct drm_mode_config_funcs mxsfb_mode_config_funcs = {
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2017-09-24 06:26:20 -06:00
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.fb_create = drm_gem_fb_create,
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2016-08-18 12:23:01 -06:00
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe,
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2018-03-22 14:27:37 -06:00
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struct drm_crtc_state *crtc_state,
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struct drm_plane_state *plane_state)
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2016-08-18 12:23:01 -06:00
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{
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struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
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2017-02-01 10:19:47 -07:00
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drm_panel_prepare(mxsfb->panel);
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2016-08-18 12:23:01 -06:00
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mxsfb_crtc_enable(mxsfb);
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2017-02-01 10:19:47 -07:00
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drm_panel_enable(mxsfb->panel);
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2016-08-18 12:23:01 -06:00
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}
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static void mxsfb_pipe_disable(struct drm_simple_display_pipe *pipe)
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{
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struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
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2017-02-01 10:19:47 -07:00
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drm_panel_disable(mxsfb->panel);
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2016-08-18 12:23:01 -06:00
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mxsfb_crtc_disable(mxsfb);
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2017-02-01 10:19:47 -07:00
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drm_panel_unprepare(mxsfb->panel);
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2016-08-18 12:23:01 -06:00
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}
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static void mxsfb_pipe_update(struct drm_simple_display_pipe *pipe,
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struct drm_plane_state *plane_state)
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{
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struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
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mxsfb_plane_atomic_update(mxsfb, plane_state);
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}
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2018-02-12 01:52:52 -07:00
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static int mxsfb_pipe_enable_vblank(struct drm_simple_display_pipe *pipe)
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{
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struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
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/* Clear and enable VBLANK IRQ */
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mxsfb_enable_axi_clk(mxsfb);
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writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
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writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_SET);
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mxsfb_disable_axi_clk(mxsfb);
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return 0;
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}
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static void mxsfb_pipe_disable_vblank(struct drm_simple_display_pipe *pipe)
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{
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struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
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/* Disable and clear VBLANK IRQ */
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mxsfb_enable_axi_clk(mxsfb);
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writel(CTRL1_CUR_FRAME_DONE_IRQ_EN, mxsfb->base + LCDC_CTRL1 + REG_CLR);
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writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
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mxsfb_disable_axi_clk(mxsfb);
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}
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2017-02-05 09:05:38 -07:00
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static struct drm_simple_display_pipe_funcs mxsfb_funcs = {
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2016-08-18 12:23:01 -06:00
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.enable = mxsfb_pipe_enable,
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.disable = mxsfb_pipe_disable,
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.update = mxsfb_pipe_update,
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2018-04-05 09:44:45 -06:00
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.prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
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2018-02-12 01:52:52 -07:00
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.enable_vblank = mxsfb_pipe_enable_vblank,
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.disable_vblank = mxsfb_pipe_disable_vblank,
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2016-08-18 12:23:01 -06:00
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};
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static int mxsfb_load(struct drm_device *drm, unsigned long flags)
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{
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struct platform_device *pdev = to_platform_device(drm->dev);
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struct mxsfb_drm_private *mxsfb;
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struct resource *res;
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int ret;
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mxsfb = devm_kzalloc(&pdev->dev, sizeof(*mxsfb), GFP_KERNEL);
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if (!mxsfb)
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return -ENOMEM;
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drm->dev_private = mxsfb;
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mxsfb->devdata = &mxsfb_devdata[pdev->id_entry->driver_data];
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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mxsfb->base = devm_ioremap_resource(drm->dev, res);
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if (IS_ERR(mxsfb->base))
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return PTR_ERR(mxsfb->base);
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mxsfb->clk = devm_clk_get(drm->dev, NULL);
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if (IS_ERR(mxsfb->clk))
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return PTR_ERR(mxsfb->clk);
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mxsfb->clk_axi = devm_clk_get(drm->dev, "axi");
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if (IS_ERR(mxsfb->clk_axi))
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mxsfb->clk_axi = NULL;
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mxsfb->clk_disp_axi = devm_clk_get(drm->dev, "disp_axi");
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if (IS_ERR(mxsfb->clk_disp_axi))
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mxsfb->clk_disp_axi = NULL;
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ret = dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(32));
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if (ret)
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return ret;
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pm_runtime_enable(drm->dev);
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ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
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if (ret < 0) {
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dev_err(drm->dev, "Failed to initialise vblank\n");
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goto err_vblank;
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}
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/* Modeset init */
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drm_mode_config_init(drm);
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ret = mxsfb_create_output(drm);
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if (ret < 0) {
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dev_err(drm->dev, "Failed to create outputs\n");
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goto err_vblank;
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}
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ret = drm_simple_display_pipe_init(drm, &mxsfb->pipe, &mxsfb_funcs,
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2017-07-23 21:46:38 -06:00
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mxsfb_formats, ARRAY_SIZE(mxsfb_formats), NULL,
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2016-08-18 12:23:01 -06:00
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&mxsfb->connector);
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if (ret < 0) {
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dev_err(drm->dev, "Cannot setup simple display pipe\n");
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goto err_vblank;
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}
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ret = drm_panel_attach(mxsfb->panel, &mxsfb->connector);
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if (ret) {
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dev_err(drm->dev, "Cannot connect panel\n");
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goto err_vblank;
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}
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drm->mode_config.min_width = MXSFB_MIN_XRES;
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drm->mode_config.min_height = MXSFB_MIN_YRES;
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drm->mode_config.max_width = MXSFB_MAX_XRES;
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drm->mode_config.max_height = MXSFB_MAX_YRES;
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drm->mode_config.funcs = &mxsfb_mode_config_funcs;
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drm_mode_config_reset(drm);
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pm_runtime_get_sync(drm->dev);
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ret = drm_irq_install(drm, platform_get_irq(pdev, 0));
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pm_runtime_put_sync(drm->dev);
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if (ret < 0) {
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dev_err(drm->dev, "Failed to install IRQ handler\n");
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goto err_irq;
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}
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drm_kms_helper_poll_init(drm);
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drm: Rely on mode_config data for fb_helper initialization
Instead of receiving the num_crts as a parameter, we can read it
directly from the mode_config structure. I audited the drivers that
invoke this helper and I believe all of them initialize the mode_config
struct accordingly, prior to calling the fb_helper.
I used the following coccinelle hack to make this transformation, except
for the function headers and comment updates. The first and second
rules are split because I couldn't find a way to remove the unused
temporary variables at the same time I removed the parameter.
// <smpl>
@r@
expression A,B,D,E;
identifier C;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
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- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
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- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
expression A,B,C,D,E;
@@
(
- drm_fb_helper_init(A,B,C,D)
+ drm_fb_helper_init(A,B,D)
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- drm_fbdev_cma_init_with_funcs(A,B,C,D,E)
+ drm_fbdev_cma_init_with_funcs(A,B,D,E)
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- drm_fbdev_cma_init(A,B,C,D)
+ drm_fbdev_cma_init(A,B,D)
)
@@
identifier r.C;
type T;
expression V;
@@
- T C;
<...
when != C
- C = V;
...>
// </smpl>
Changes since v1:
- Rebased on top of the tip of drm-misc-next.
- Remove mention to sti since a proper fix got merged.
Suggested-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170202162640.27261-1-krisman@collabora.co.uk
2017-02-02 09:26:40 -07:00
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mxsfb->fbdev = drm_fbdev_cma_init(drm, 32,
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2016-08-18 12:23:01 -06:00
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drm->mode_config.num_connector);
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if (IS_ERR(mxsfb->fbdev)) {
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2017-02-05 09:00:36 -07:00
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ret = PTR_ERR(mxsfb->fbdev);
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2016-08-18 12:23:01 -06:00
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mxsfb->fbdev = NULL;
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dev_err(drm->dev, "Failed to init FB CMA area\n");
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goto err_cma;
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}
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platform_set_drvdata(pdev, drm);
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drm_helper_hpd_irq_event(drm);
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return 0;
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err_cma:
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drm_irq_uninstall(drm);
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err_irq:
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drm_panel_detach(mxsfb->panel);
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err_vblank:
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pm_runtime_disable(drm->dev);
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return ret;
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}
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static void mxsfb_unload(struct drm_device *drm)
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{
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struct mxsfb_drm_private *mxsfb = drm->dev_private;
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if (mxsfb->fbdev)
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drm_fbdev_cma_fini(mxsfb->fbdev);
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drm_kms_helper_poll_fini(drm);
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drm_mode_config_cleanup(drm);
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pm_runtime_get_sync(drm->dev);
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drm_irq_uninstall(drm);
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pm_runtime_put_sync(drm->dev);
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drm->dev_private = NULL;
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pm_runtime_disable(drm->dev);
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}
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static void mxsfb_lastclose(struct drm_device *drm)
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{
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struct mxsfb_drm_private *mxsfb = drm->dev_private;
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drm_fbdev_cma_restore_mode(mxsfb->fbdev);
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}
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|
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|
2018-02-12 01:52:52 -07:00
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|
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static void mxsfb_irq_preinstall(struct drm_device *drm)
|
2016-08-18 12:23:01 -06:00
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|
|
{
|
|
|
|
struct mxsfb_drm_private *mxsfb = drm->dev_private;
|
|
|
|
|
2018-02-12 01:52:52 -07:00
|
|
|
mxsfb_pipe_disable_vblank(&mxsfb->pipe);
|
2016-08-18 12:23:01 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static irqreturn_t mxsfb_irq_handler(int irq, void *data)
|
|
|
|
{
|
|
|
|
struct drm_device *drm = data;
|
|
|
|
struct mxsfb_drm_private *mxsfb = drm->dev_private;
|
|
|
|
u32 reg;
|
|
|
|
|
|
|
|
mxsfb_enable_axi_clk(mxsfb);
|
|
|
|
|
|
|
|
reg = readl(mxsfb->base + LCDC_CTRL1);
|
|
|
|
|
|
|
|
if (reg & CTRL1_CUR_FRAME_DONE_IRQ)
|
|
|
|
drm_crtc_handle_vblank(&mxsfb->pipe.crtc);
|
|
|
|
|
|
|
|
writel(CTRL1_CUR_FRAME_DONE_IRQ, mxsfb->base + LCDC_CTRL1 + REG_CLR);
|
|
|
|
|
|
|
|
mxsfb_disable_axi_clk(mxsfb);
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2017-03-08 07:12:56 -07:00
|
|
|
DEFINE_DRM_GEM_CMA_FOPS(fops);
|
2016-08-18 12:23:01 -06:00
|
|
|
|
|
|
|
static struct drm_driver mxsfb_driver = {
|
|
|
|
.driver_features = DRIVER_GEM | DRIVER_MODESET |
|
|
|
|
DRIVER_PRIME | DRIVER_ATOMIC |
|
|
|
|
DRIVER_HAVE_IRQ,
|
|
|
|
.lastclose = mxsfb_lastclose,
|
|
|
|
.irq_handler = mxsfb_irq_handler,
|
|
|
|
.irq_preinstall = mxsfb_irq_preinstall,
|
|
|
|
.irq_uninstall = mxsfb_irq_preinstall,
|
2017-07-17 09:10:43 -06:00
|
|
|
.gem_free_object_unlocked = drm_gem_cma_free_object,
|
2016-08-18 12:23:01 -06:00
|
|
|
.gem_vm_ops = &drm_gem_cma_vm_ops,
|
|
|
|
.dumb_create = drm_gem_cma_dumb_create,
|
|
|
|
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
|
|
|
|
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
|
|
|
|
.gem_prime_export = drm_gem_prime_export,
|
|
|
|
.gem_prime_import = drm_gem_prime_import,
|
|
|
|
.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
|
|
|
|
.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
|
|
|
|
.gem_prime_vmap = drm_gem_cma_prime_vmap,
|
|
|
|
.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
|
|
|
|
.gem_prime_mmap = drm_gem_cma_prime_mmap,
|
|
|
|
.fops = &fops,
|
|
|
|
.name = "mxsfb-drm",
|
|
|
|
.desc = "MXSFB Controller DRM",
|
|
|
|
.date = "20160824",
|
|
|
|
.major = 1,
|
|
|
|
.minor = 0,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct platform_device_id mxsfb_devtype[] = {
|
|
|
|
{ .name = "imx23-fb", .driver_data = MXSFB_V3, },
|
|
|
|
{ .name = "imx28-fb", .driver_data = MXSFB_V4, },
|
|
|
|
{ .name = "imx6sx-fb", .driver_data = MXSFB_V4, },
|
|
|
|
{ /* sentinel */ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(platform, mxsfb_devtype);
|
|
|
|
|
|
|
|
static const struct of_device_id mxsfb_dt_ids[] = {
|
|
|
|
{ .compatible = "fsl,imx23-lcdif", .data = &mxsfb_devtype[0], },
|
|
|
|
{ .compatible = "fsl,imx28-lcdif", .data = &mxsfb_devtype[1], },
|
|
|
|
{ .compatible = "fsl,imx6sx-lcdif", .data = &mxsfb_devtype[2], },
|
|
|
|
{ /* sentinel */ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, mxsfb_dt_ids);
|
|
|
|
|
|
|
|
static int mxsfb_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct drm_device *drm;
|
|
|
|
const struct of_device_id *of_id =
|
|
|
|
of_match_device(mxsfb_dt_ids, &pdev->dev);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (!pdev->dev.of_node)
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
if (of_id)
|
|
|
|
pdev->id_entry = of_id->data;
|
|
|
|
|
|
|
|
drm = drm_dev_alloc(&mxsfb_driver, &pdev->dev);
|
2016-12-13 05:23:32 -07:00
|
|
|
if (IS_ERR(drm))
|
|
|
|
return PTR_ERR(drm);
|
2016-08-18 12:23:01 -06:00
|
|
|
|
|
|
|
ret = mxsfb_load(drm, 0);
|
|
|
|
if (ret)
|
|
|
|
goto err_free;
|
|
|
|
|
|
|
|
ret = drm_dev_register(drm, 0);
|
|
|
|
if (ret)
|
|
|
|
goto err_unload;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
err_unload:
|
|
|
|
mxsfb_unload(drm);
|
|
|
|
err_free:
|
|
|
|
drm_dev_unref(drm);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int mxsfb_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct drm_device *drm = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
drm_dev_unregister(drm);
|
|
|
|
mxsfb_unload(drm);
|
|
|
|
drm_dev_unref(drm);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver mxsfb_platform_driver = {
|
|
|
|
.probe = mxsfb_probe,
|
|
|
|
.remove = mxsfb_remove,
|
|
|
|
.id_table = mxsfb_devtype,
|
|
|
|
.driver = {
|
|
|
|
.name = "mxsfb",
|
|
|
|
.of_match_table = mxsfb_dt_ids,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
module_platform_driver(mxsfb_platform_driver);
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Marek Vasut <marex@denx.de>");
|
|
|
|
MODULE_DESCRIPTION("Freescale MXS DRM/KMS driver");
|
|
|
|
MODULE_LICENSE("GPL");
|