mirror of https://gitee.com/openkylin/linux.git
580 lines
14 KiB
C
580 lines
14 KiB
C
/*
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* Copyright (C) 2014 Traphandler
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* Copyright (C) 2014 Free Electrons
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* Copyright (C) 2014 Atmel
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*
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* Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
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* Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/clk.h>
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#include <linux/irq.h>
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#include <linux/irqchip.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include "atmel_hlcdc_dc.h"
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#define ATMEL_HLCDC_LAYER_IRQS_OFFSET 8
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static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sama5d3_layers[] = {
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{
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.name = "base",
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.formats = &atmel_hlcdc_plane_rgb_formats,
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.regs_offset = 0x40,
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.id = 0,
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.type = ATMEL_HLCDC_BASE_LAYER,
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.nconfigs = 7,
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.layout = {
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.xstride = { 2 },
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.default_color = 3,
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.general_config = 4,
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.disc_pos = 5,
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.disc_size = 6,
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},
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},
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{
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.name = "overlay1",
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.formats = &atmel_hlcdc_plane_rgb_formats,
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.regs_offset = 0x140,
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.id = 1,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.nconfigs = 10,
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.layout = {
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.pos = 2,
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.size = 3,
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.xstride = { 4 },
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.pstride = { 5 },
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.default_color = 6,
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.chroma_key = 7,
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.chroma_key_mask = 8,
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.general_config = 9,
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},
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},
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{
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.name = "overlay2",
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.formats = &atmel_hlcdc_plane_rgb_formats,
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.regs_offset = 0x240,
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.id = 2,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.nconfigs = 10,
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.layout = {
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.pos = 2,
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.size = 3,
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.xstride = { 4 },
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.pstride = { 5 },
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.default_color = 6,
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.chroma_key = 7,
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.chroma_key_mask = 8,
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.general_config = 9,
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},
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},
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{
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.name = "high-end-overlay",
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.formats = &atmel_hlcdc_plane_rgb_and_yuv_formats,
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.regs_offset = 0x340,
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.id = 3,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.nconfigs = 42,
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.layout = {
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.pos = 2,
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.size = 3,
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.memsize = 4,
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.xstride = { 5, 7 },
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.pstride = { 6, 8 },
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.default_color = 9,
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.chroma_key = 10,
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.chroma_key_mask = 11,
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.general_config = 12,
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.csc = 14,
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},
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},
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{
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.name = "cursor",
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.formats = &atmel_hlcdc_plane_rgb_formats,
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.regs_offset = 0x440,
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.id = 4,
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.type = ATMEL_HLCDC_CURSOR_LAYER,
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.nconfigs = 10,
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.max_width = 128,
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.max_height = 128,
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.layout = {
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.pos = 2,
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.size = 3,
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.xstride = { 4 },
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.pstride = { 5 },
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.default_color = 6,
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.chroma_key = 7,
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.chroma_key_mask = 8,
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.general_config = 9,
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},
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},
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};
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static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d3 = {
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.min_width = 0,
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.min_height = 0,
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.max_width = 2048,
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.max_height = 2048,
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.nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d3_layers),
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.layers = atmel_hlcdc_sama5d3_layers,
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};
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static const struct of_device_id atmel_hlcdc_of_match[] = {
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{
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.compatible = "atmel,sama5d3-hlcdc",
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.data = &atmel_hlcdc_dc_sama5d3,
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},
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{ /* sentinel */ },
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};
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int atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
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struct drm_display_mode *mode)
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{
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int vfront_porch = mode->vsync_start - mode->vdisplay;
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int vback_porch = mode->vtotal - mode->vsync_end;
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int vsync_len = mode->vsync_end - mode->vsync_start;
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int hfront_porch = mode->hsync_start - mode->hdisplay;
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int hback_porch = mode->htotal - mode->hsync_end;
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int hsync_len = mode->hsync_end - mode->hsync_start;
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if (hsync_len > 0x40 || hsync_len < 1)
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return MODE_HSYNC;
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if (vsync_len > 0x40 || vsync_len < 1)
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return MODE_VSYNC;
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if (hfront_porch > 0x200 || hfront_porch < 1 ||
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hback_porch > 0x200 || hback_porch < 1 ||
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mode->hdisplay < 1)
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return MODE_H_ILLEGAL;
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if (vfront_porch > 0x40 || vfront_porch < 1 ||
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vback_porch > 0x40 || vback_porch < 0 ||
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mode->vdisplay < 1)
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return MODE_V_ILLEGAL;
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return MODE_OK;
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}
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static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data)
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{
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struct drm_device *dev = data;
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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unsigned long status;
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unsigned int imr, isr;
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int i;
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regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr);
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regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
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status = imr & isr;
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if (!status)
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return IRQ_NONE;
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if (status & ATMEL_HLCDC_SOF)
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atmel_hlcdc_crtc_irq(dc->crtc);
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for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
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struct atmel_hlcdc_layer *layer = dc->layers[i];
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if (!(ATMEL_HLCDC_LAYER_STATUS(i) & status) || !layer)
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continue;
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atmel_hlcdc_layer_irq(layer);
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}
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return IRQ_HANDLED;
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}
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static struct drm_framebuffer *atmel_hlcdc_fb_create(struct drm_device *dev,
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struct drm_file *file_priv, struct drm_mode_fb_cmd2 *mode_cmd)
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{
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return drm_fb_cma_create(dev, file_priv, mode_cmd);
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}
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static void atmel_hlcdc_fb_output_poll_changed(struct drm_device *dev)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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if (dc->fbdev) {
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drm_fbdev_cma_hotplug_event(dc->fbdev);
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} else {
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dc->fbdev = drm_fbdev_cma_init(dev, 24,
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dev->mode_config.num_crtc,
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dev->mode_config.num_connector);
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if (IS_ERR(dc->fbdev))
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dc->fbdev = NULL;
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}
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}
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static const struct drm_mode_config_funcs mode_config_funcs = {
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.fb_create = atmel_hlcdc_fb_create,
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.output_poll_changed = atmel_hlcdc_fb_output_poll_changed,
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};
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static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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struct atmel_hlcdc_planes *planes;
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int ret;
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int i;
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drm_mode_config_init(dev);
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ret = atmel_hlcdc_create_outputs(dev);
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if (ret) {
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dev_err(dev->dev, "failed to create panel: %d\n", ret);
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return ret;
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}
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planes = atmel_hlcdc_create_planes(dev);
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if (IS_ERR(planes)) {
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dev_err(dev->dev, "failed to create planes\n");
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return PTR_ERR(planes);
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}
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dc->planes = planes;
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dc->layers[planes->primary->layer.desc->id] =
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&planes->primary->layer;
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if (planes->cursor)
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dc->layers[planes->cursor->layer.desc->id] =
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&planes->cursor->layer;
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for (i = 0; i < planes->noverlays; i++)
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dc->layers[planes->overlays[i]->layer.desc->id] =
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&planes->overlays[i]->layer;
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ret = atmel_hlcdc_crtc_create(dev);
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if (ret) {
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dev_err(dev->dev, "failed to create crtc\n");
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return ret;
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}
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dev->mode_config.min_width = dc->desc->min_width;
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dev->mode_config.min_height = dc->desc->min_height;
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dev->mode_config.max_width = dc->desc->max_width;
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dev->mode_config.max_height = dc->desc->max_height;
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dev->mode_config.funcs = &mode_config_funcs;
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return 0;
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}
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static int atmel_hlcdc_dc_load(struct drm_device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev->dev);
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const struct of_device_id *match;
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struct atmel_hlcdc_dc *dc;
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int ret;
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match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node);
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if (!match) {
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dev_err(&pdev->dev, "invalid compatible string\n");
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return -ENODEV;
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}
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if (!match->data) {
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dev_err(&pdev->dev, "invalid hlcdc description\n");
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return -EINVAL;
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}
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dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL);
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if (!dc)
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return -ENOMEM;
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dc->wq = alloc_ordered_workqueue("atmel-hlcdc-dc", 0);
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if (!dc->wq)
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return -ENOMEM;
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dc->desc = match->data;
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dc->hlcdc = dev_get_drvdata(dev->dev->parent);
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dev->dev_private = dc;
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ret = clk_prepare_enable(dc->hlcdc->periph_clk);
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if (ret) {
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dev_err(dev->dev, "failed to enable periph_clk\n");
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goto err_destroy_wq;
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}
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pm_runtime_enable(dev->dev);
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pm_runtime_put_sync(dev->dev);
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ret = atmel_hlcdc_dc_modeset_init(dev);
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if (ret < 0) {
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dev_err(dev->dev, "failed to initialize mode setting\n");
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goto err_periph_clk_disable;
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}
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ret = drm_vblank_init(dev, 1);
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if (ret < 0) {
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dev_err(dev->dev, "failed to initialize vblank\n");
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goto err_periph_clk_disable;
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}
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pm_runtime_get_sync(dev->dev);
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ret = drm_irq_install(dev, dc->hlcdc->irq);
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pm_runtime_put_sync(dev->dev);
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if (ret < 0) {
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dev_err(dev->dev, "failed to install IRQ handler\n");
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goto err_periph_clk_disable;
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}
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platform_set_drvdata(pdev, dev);
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drm_kms_helper_poll_init(dev);
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/* force connectors detection */
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drm_helper_hpd_irq_event(dev);
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return 0;
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err_periph_clk_disable:
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pm_runtime_disable(dev->dev);
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clk_disable_unprepare(dc->hlcdc->periph_clk);
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err_destroy_wq:
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destroy_workqueue(dc->wq);
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return ret;
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}
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static void atmel_hlcdc_dc_unload(struct drm_device *dev)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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if (dc->fbdev)
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drm_fbdev_cma_fini(dc->fbdev);
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flush_workqueue(dc->wq);
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drm_kms_helper_poll_fini(dev);
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drm_mode_config_cleanup(dev);
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drm_vblank_cleanup(dev);
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pm_runtime_get_sync(dev->dev);
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drm_irq_uninstall(dev);
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pm_runtime_put_sync(dev->dev);
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dev->dev_private = NULL;
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pm_runtime_disable(dev->dev);
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clk_disable_unprepare(dc->hlcdc->periph_clk);
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destroy_workqueue(dc->wq);
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}
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static int atmel_hlcdc_dc_connector_plug_all(struct drm_device *dev)
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{
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struct drm_connector *connector, *failed;
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int ret;
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mutex_lock(&dev->mode_config.mutex);
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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ret = drm_connector_register(connector);
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if (ret) {
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failed = connector;
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goto err;
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}
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}
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mutex_unlock(&dev->mode_config.mutex);
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return 0;
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err:
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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if (failed == connector)
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break;
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drm_connector_unregister(connector);
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}
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mutex_unlock(&dev->mode_config.mutex);
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return ret;
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}
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static void atmel_hlcdc_dc_connector_unplug_all(struct drm_device *dev)
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{
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mutex_lock(&dev->mode_config.mutex);
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drm_connector_unplug_all(dev);
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mutex_unlock(&dev->mode_config.mutex);
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}
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static void atmel_hlcdc_dc_preclose(struct drm_device *dev,
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struct drm_file *file)
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{
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struct drm_crtc *crtc;
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
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atmel_hlcdc_crtc_cancel_page_flip(crtc, file);
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}
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static void atmel_hlcdc_dc_lastclose(struct drm_device *dev)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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drm_fbdev_cma_restore_mode(dc->fbdev);
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}
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static int atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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unsigned int cfg = 0;
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int i;
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/* Enable interrupts on activated layers */
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for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
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if (dc->layers[i])
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cfg |= ATMEL_HLCDC_LAYER_STATUS(i);
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}
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regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg);
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return 0;
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}
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static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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unsigned int isr;
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regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff);
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regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
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}
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static int atmel_hlcdc_dc_enable_vblank(struct drm_device *dev, int crtc)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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/* Enable SOF (Start Of Frame) interrupt for vblank counting */
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regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, ATMEL_HLCDC_SOF);
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return 0;
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}
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static void atmel_hlcdc_dc_disable_vblank(struct drm_device *dev, int crtc)
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{
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struct atmel_hlcdc_dc *dc = dev->dev_private;
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regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, ATMEL_HLCDC_SOF);
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}
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static const struct file_operations fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.release = drm_release,
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.unlocked_ioctl = drm_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = drm_compat_ioctl,
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#endif
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.poll = drm_poll,
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.read = drm_read,
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.llseek = no_llseek,
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.mmap = drm_gem_cma_mmap,
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};
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static struct drm_driver atmel_hlcdc_dc_driver = {
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.driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET,
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.preclose = atmel_hlcdc_dc_preclose,
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.lastclose = atmel_hlcdc_dc_lastclose,
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.irq_handler = atmel_hlcdc_dc_irq_handler,
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.irq_preinstall = atmel_hlcdc_dc_irq_uninstall,
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.irq_postinstall = atmel_hlcdc_dc_irq_postinstall,
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.irq_uninstall = atmel_hlcdc_dc_irq_uninstall,
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.get_vblank_counter = drm_vblank_count,
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.enable_vblank = atmel_hlcdc_dc_enable_vblank,
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.disable_vblank = atmel_hlcdc_dc_disable_vblank,
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.gem_free_object = drm_gem_cma_free_object,
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.gem_vm_ops = &drm_gem_cma_vm_ops,
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.dumb_create = drm_gem_cma_dumb_create,
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.dumb_map_offset = drm_gem_cma_dumb_map_offset,
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|
.dumb_destroy = drm_gem_dumb_destroy,
|
|
.fops = &fops,
|
|
.name = "atmel-hlcdc",
|
|
.desc = "Atmel HLCD Controller DRM",
|
|
.date = "20141504",
|
|
.major = 1,
|
|
.minor = 0,
|
|
};
|
|
|
|
static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
|
|
{
|
|
struct drm_device *ddev;
|
|
int ret;
|
|
|
|
ddev = drm_dev_alloc(&atmel_hlcdc_dc_driver, &pdev->dev);
|
|
if (!ddev)
|
|
return -ENOMEM;
|
|
|
|
ret = drm_dev_set_unique(ddev, dev_name(ddev->dev));
|
|
if (ret)
|
|
goto err_unref;
|
|
|
|
ret = atmel_hlcdc_dc_load(ddev);
|
|
if (ret)
|
|
goto err_unref;
|
|
|
|
ret = drm_dev_register(ddev, 0);
|
|
if (ret)
|
|
goto err_unload;
|
|
|
|
ret = atmel_hlcdc_dc_connector_plug_all(ddev);
|
|
if (ret)
|
|
goto err_unregister;
|
|
|
|
return 0;
|
|
|
|
err_unregister:
|
|
drm_dev_unregister(ddev);
|
|
|
|
err_unload:
|
|
atmel_hlcdc_dc_unload(ddev);
|
|
|
|
err_unref:
|
|
drm_dev_unref(ddev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev)
|
|
{
|
|
struct drm_device *ddev = platform_get_drvdata(pdev);
|
|
|
|
atmel_hlcdc_dc_connector_unplug_all(ddev);
|
|
drm_dev_unregister(ddev);
|
|
atmel_hlcdc_dc_unload(ddev);
|
|
drm_dev_unref(ddev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id atmel_hlcdc_dc_of_match[] = {
|
|
{ .compatible = "atmel,hlcdc-display-controller" },
|
|
{ },
|
|
};
|
|
|
|
static struct platform_driver atmel_hlcdc_dc_platform_driver = {
|
|
.probe = atmel_hlcdc_dc_drm_probe,
|
|
.remove = atmel_hlcdc_dc_drm_remove,
|
|
.driver = {
|
|
.name = "atmel-hlcdc-display-controller",
|
|
.of_match_table = atmel_hlcdc_dc_of_match,
|
|
},
|
|
};
|
|
module_platform_driver(atmel_hlcdc_dc_platform_driver);
|
|
|
|
MODULE_AUTHOR("Jean-Jacques Hiblot <jjhiblot@traphandler.com>");
|
|
MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
|
|
MODULE_DESCRIPTION("Atmel HLCDC Display Controller DRM Driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:atmel-hlcdc-dc");
|