843 lines
19 KiB
C
843 lines
19 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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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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#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/mfd/atmel-hlcdc.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/platform_device.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_drv.h>
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#include <drm/drm_fbdev_generic.h>
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#include <drm/drm_gem_dma_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_module.h>
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#include <drm/drm_probe_helper.h>
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#include <drm/drm_vblank.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_at91sam9n12_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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.cfgs_offset = 0x2c,
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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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},
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.clut_offset = 0x400,
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},
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};
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static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9n12 = {
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.min_width = 0,
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.min_height = 0,
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.max_width = 1280,
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.max_height = 860,
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.max_spw = 0x3f,
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.max_vpw = 0x3f,
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.max_hpw = 0xff,
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.conflicting_output_formats = true,
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.nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9n12_layers),
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.layers = atmel_hlcdc_at91sam9n12_layers,
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};
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static const struct atmel_hlcdc_layer_desc atmel_hlcdc_at91sam9x5_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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.cfgs_offset = 0x2c,
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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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.clut_offset = 0x400,
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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 = 0x100,
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.id = 1,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.cfgs_offset = 0x2c,
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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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.clut_offset = 0x800,
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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 = 0x280,
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.id = 2,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.cfgs_offset = 0x4c,
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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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.scaler_config = 13,
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.csc = 14,
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},
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.clut_offset = 0x1000,
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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 = 0x340,
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.id = 3,
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.type = ATMEL_HLCDC_CURSOR_LAYER,
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.max_width = 128,
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.max_height = 128,
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.cfgs_offset = 0x2c,
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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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.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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.clut_offset = 0x1400,
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},
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};
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static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_at91sam9x5 = {
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.min_width = 0,
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.min_height = 0,
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.max_width = 800,
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.max_height = 600,
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.max_spw = 0x3f,
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.max_vpw = 0x3f,
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.max_hpw = 0xff,
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.conflicting_output_formats = true,
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.nlayers = ARRAY_SIZE(atmel_hlcdc_at91sam9x5_layers),
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.layers = atmel_hlcdc_at91sam9x5_layers,
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};
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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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.cfgs_offset = 0x2c,
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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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.clut_offset = 0x600,
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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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.cfgs_offset = 0x2c,
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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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.clut_offset = 0xa00,
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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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.cfgs_offset = 0x2c,
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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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.clut_offset = 0xe00,
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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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.cfgs_offset = 0x4c,
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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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.scaler_config = 13,
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.phicoeffs = {
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.x = 17,
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.y = 33,
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},
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.csc = 14,
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},
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.clut_offset = 0x1200,
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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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.max_width = 128,
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.max_height = 128,
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.cfgs_offset = 0x2c,
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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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.scaler_config = 13,
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},
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.clut_offset = 0x1600,
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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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.max_spw = 0x3f,
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.max_vpw = 0x3f,
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.max_hpw = 0x1ff,
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.conflicting_output_formats = true,
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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 atmel_hlcdc_layer_desc atmel_hlcdc_sama5d4_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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.cfgs_offset = 0x2c,
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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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.clut_offset = 0x600,
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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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.cfgs_offset = 0x2c,
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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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.clut_offset = 0xa00,
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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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.cfgs_offset = 0x2c,
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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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.clut_offset = 0xe00,
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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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.cfgs_offset = 0x4c,
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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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.scaler_config = 13,
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.phicoeffs = {
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.x = 17,
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.y = 33,
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},
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.csc = 14,
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},
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.clut_offset = 0x1200,
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},
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};
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static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sama5d4 = {
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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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.max_spw = 0xff,
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.max_vpw = 0xff,
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.max_hpw = 0x3ff,
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.nlayers = ARRAY_SIZE(atmel_hlcdc_sama5d4_layers),
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.layers = atmel_hlcdc_sama5d4_layers,
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};
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static const struct atmel_hlcdc_layer_desc atmel_hlcdc_sam9x60_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 = 0x60,
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.id = 0,
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.type = ATMEL_HLCDC_BASE_LAYER,
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.cfgs_offset = 0x2c,
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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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.clut_offset = 0x600,
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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 = 0x160,
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.id = 1,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.cfgs_offset = 0x2c,
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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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.clut_offset = 0xa00,
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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 = 0x260,
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.id = 2,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.cfgs_offset = 0x2c,
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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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.clut_offset = 0xe00,
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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 = 0x360,
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.id = 3,
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.type = ATMEL_HLCDC_OVERLAY_LAYER,
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.cfgs_offset = 0x4c,
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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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.scaler_config = 13,
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.phicoeffs = {
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.x = 17,
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.y = 33,
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},
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.csc = 14,
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},
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.clut_offset = 0x1200,
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},
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};
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static const struct atmel_hlcdc_dc_desc atmel_hlcdc_dc_sam9x60 = {
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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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.max_spw = 0xff,
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.max_vpw = 0xff,
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.max_hpw = 0x3ff,
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.fixed_clksrc = true,
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.nlayers = ARRAY_SIZE(atmel_hlcdc_sam9x60_layers),
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.layers = atmel_hlcdc_sam9x60_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,at91sam9n12-hlcdc",
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.data = &atmel_hlcdc_dc_at91sam9n12,
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},
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{
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.compatible = "atmel,at91sam9x5-hlcdc",
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.data = &atmel_hlcdc_dc_at91sam9x5,
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},
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{
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.compatible = "atmel,sama5d2-hlcdc",
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.data = &atmel_hlcdc_dc_sama5d4,
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},
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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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{
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.compatible = "atmel,sama5d4-hlcdc",
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.data = &atmel_hlcdc_dc_sama5d4,
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},
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{
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.compatible = "microchip,sam9x60-hlcdc",
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.data = &atmel_hlcdc_dc_sam9x60,
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},
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{ /* sentinel */ },
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};
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MODULE_DEVICE_TABLE(of, atmel_hlcdc_of_match);
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enum drm_mode_status
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atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
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const 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;
|
|
|
|
if (hsync_len > dc->desc->max_spw + 1 || hsync_len < 1)
|
|
return MODE_HSYNC;
|
|
|
|
if (vsync_len > dc->desc->max_spw + 1 || vsync_len < 1)
|
|
return MODE_VSYNC;
|
|
|
|
if (hfront_porch > dc->desc->max_hpw + 1 || hfront_porch < 1 ||
|
|
hback_porch > dc->desc->max_hpw + 1 || hback_porch < 1 ||
|
|
mode->hdisplay < 1)
|
|
return MODE_H_ILLEGAL;
|
|
|
|
if (vfront_porch > dc->desc->max_vpw + 1 || vfront_porch < 1 ||
|
|
vback_porch > dc->desc->max_vpw || vback_porch < 0 ||
|
|
mode->vdisplay < 1)
|
|
return MODE_V_ILLEGAL;
|
|
|
|
return MODE_OK;
|
|
}
|
|
|
|
static void atmel_hlcdc_layer_irq(struct atmel_hlcdc_layer *layer)
|
|
{
|
|
if (!layer)
|
|
return;
|
|
|
|
if (layer->desc->type == ATMEL_HLCDC_BASE_LAYER ||
|
|
layer->desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
|
|
layer->desc->type == ATMEL_HLCDC_CURSOR_LAYER)
|
|
atmel_hlcdc_plane_irq(atmel_hlcdc_layer_to_plane(layer));
|
|
}
|
|
|
|
static irqreturn_t atmel_hlcdc_dc_irq_handler(int irq, void *data)
|
|
{
|
|
struct drm_device *dev = data;
|
|
struct atmel_hlcdc_dc *dc = dev->dev_private;
|
|
unsigned long status;
|
|
unsigned int imr, isr;
|
|
int i;
|
|
|
|
regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_IMR, &imr);
|
|
regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
|
|
status = imr & isr;
|
|
if (!status)
|
|
return IRQ_NONE;
|
|
|
|
if (status & ATMEL_HLCDC_SOF)
|
|
atmel_hlcdc_crtc_irq(dc->crtc);
|
|
|
|
for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
|
|
if (ATMEL_HLCDC_LAYER_STATUS(i) & status)
|
|
atmel_hlcdc_layer_irq(dc->layers[i]);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void atmel_hlcdc_dc_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct atmel_hlcdc_dc *dc = dev->dev_private;
|
|
unsigned int cfg = 0;
|
|
int i;
|
|
|
|
/* Enable interrupts on activated layers */
|
|
for (i = 0; i < ATMEL_HLCDC_MAX_LAYERS; i++) {
|
|
if (dc->layers[i])
|
|
cfg |= ATMEL_HLCDC_LAYER_STATUS(i);
|
|
}
|
|
|
|
regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, cfg);
|
|
}
|
|
|
|
static void atmel_hlcdc_dc_irq_disable(struct drm_device *dev)
|
|
{
|
|
struct atmel_hlcdc_dc *dc = dev->dev_private;
|
|
unsigned int isr;
|
|
|
|
regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IDR, 0xffffffff);
|
|
regmap_read(dc->hlcdc->regmap, ATMEL_HLCDC_ISR, &isr);
|
|
}
|
|
|
|
static int atmel_hlcdc_dc_irq_install(struct drm_device *dev, unsigned int irq)
|
|
{
|
|
int ret;
|
|
|
|
atmel_hlcdc_dc_irq_disable(dev);
|
|
|
|
ret = devm_request_irq(dev->dev, irq, atmel_hlcdc_dc_irq_handler, 0,
|
|
dev->driver->name, dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
atmel_hlcdc_dc_irq_postinstall(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void atmel_hlcdc_dc_irq_uninstall(struct drm_device *dev)
|
|
{
|
|
atmel_hlcdc_dc_irq_disable(dev);
|
|
}
|
|
|
|
static const struct drm_mode_config_funcs mode_config_funcs = {
|
|
.fb_create = drm_gem_fb_create,
|
|
.atomic_check = drm_atomic_helper_check,
|
|
.atomic_commit = drm_atomic_helper_commit,
|
|
};
|
|
|
|
static int atmel_hlcdc_dc_modeset_init(struct drm_device *dev)
|
|
{
|
|
struct atmel_hlcdc_dc *dc = dev->dev_private;
|
|
int ret;
|
|
|
|
drm_mode_config_init(dev);
|
|
|
|
ret = atmel_hlcdc_create_outputs(dev);
|
|
if (ret) {
|
|
dev_err(dev->dev, "failed to create HLCDC outputs: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = atmel_hlcdc_create_planes(dev);
|
|
if (ret) {
|
|
dev_err(dev->dev, "failed to create planes: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = atmel_hlcdc_crtc_create(dev);
|
|
if (ret) {
|
|
dev_err(dev->dev, "failed to create crtc\n");
|
|
return ret;
|
|
}
|
|
|
|
dev->mode_config.min_width = dc->desc->min_width;
|
|
dev->mode_config.min_height = dc->desc->min_height;
|
|
dev->mode_config.max_width = dc->desc->max_width;
|
|
dev->mode_config.max_height = dc->desc->max_height;
|
|
dev->mode_config.funcs = &mode_config_funcs;
|
|
dev->mode_config.async_page_flip = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atmel_hlcdc_dc_load(struct drm_device *dev)
|
|
{
|
|
struct platform_device *pdev = to_platform_device(dev->dev);
|
|
const struct of_device_id *match;
|
|
struct atmel_hlcdc_dc *dc;
|
|
int ret;
|
|
|
|
match = of_match_node(atmel_hlcdc_of_match, dev->dev->parent->of_node);
|
|
if (!match) {
|
|
dev_err(&pdev->dev, "invalid compatible string\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!match->data) {
|
|
dev_err(&pdev->dev, "invalid hlcdc description\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dc = devm_kzalloc(dev->dev, sizeof(*dc), GFP_KERNEL);
|
|
if (!dc)
|
|
return -ENOMEM;
|
|
|
|
dc->desc = match->data;
|
|
dc->hlcdc = dev_get_drvdata(dev->dev->parent);
|
|
dev->dev_private = dc;
|
|
|
|
ret = clk_prepare_enable(dc->hlcdc->periph_clk);
|
|
if (ret) {
|
|
dev_err(dev->dev, "failed to enable periph_clk\n");
|
|
return ret;
|
|
}
|
|
|
|
pm_runtime_enable(dev->dev);
|
|
|
|
ret = drm_vblank_init(dev, 1);
|
|
if (ret < 0) {
|
|
dev_err(dev->dev, "failed to initialize vblank\n");
|
|
goto err_periph_clk_disable;
|
|
}
|
|
|
|
ret = atmel_hlcdc_dc_modeset_init(dev);
|
|
if (ret < 0) {
|
|
dev_err(dev->dev, "failed to initialize mode setting\n");
|
|
goto err_periph_clk_disable;
|
|
}
|
|
|
|
drm_mode_config_reset(dev);
|
|
|
|
pm_runtime_get_sync(dev->dev);
|
|
ret = atmel_hlcdc_dc_irq_install(dev, dc->hlcdc->irq);
|
|
pm_runtime_put_sync(dev->dev);
|
|
if (ret < 0) {
|
|
dev_err(dev->dev, "failed to install IRQ handler\n");
|
|
goto err_periph_clk_disable;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, dev);
|
|
|
|
drm_kms_helper_poll_init(dev);
|
|
|
|
return 0;
|
|
|
|
err_periph_clk_disable:
|
|
pm_runtime_disable(dev->dev);
|
|
clk_disable_unprepare(dc->hlcdc->periph_clk);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void atmel_hlcdc_dc_unload(struct drm_device *dev)
|
|
{
|
|
struct atmel_hlcdc_dc *dc = dev->dev_private;
|
|
|
|
drm_kms_helper_poll_fini(dev);
|
|
drm_atomic_helper_shutdown(dev);
|
|
drm_mode_config_cleanup(dev);
|
|
|
|
pm_runtime_get_sync(dev->dev);
|
|
atmel_hlcdc_dc_irq_uninstall(dev);
|
|
pm_runtime_put_sync(dev->dev);
|
|
|
|
dev->dev_private = NULL;
|
|
|
|
pm_runtime_disable(dev->dev);
|
|
clk_disable_unprepare(dc->hlcdc->periph_clk);
|
|
}
|
|
|
|
DEFINE_DRM_GEM_DMA_FOPS(fops);
|
|
|
|
static const struct drm_driver atmel_hlcdc_dc_driver = {
|
|
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
|
|
DRM_GEM_DMA_DRIVER_OPS,
|
|
.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 (IS_ERR(ddev))
|
|
return PTR_ERR(ddev);
|
|
|
|
ret = atmel_hlcdc_dc_load(ddev);
|
|
if (ret)
|
|
goto err_put;
|
|
|
|
ret = drm_dev_register(ddev, 0);
|
|
if (ret)
|
|
goto err_unload;
|
|
|
|
drm_fbdev_generic_setup(ddev, 24);
|
|
|
|
return 0;
|
|
|
|
err_unload:
|
|
atmel_hlcdc_dc_unload(ddev);
|
|
|
|
err_put:
|
|
drm_dev_put(ddev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int atmel_hlcdc_dc_drm_remove(struct platform_device *pdev)
|
|
{
|
|
struct drm_device *ddev = platform_get_drvdata(pdev);
|
|
|
|
drm_dev_unregister(ddev);
|
|
atmel_hlcdc_dc_unload(ddev);
|
|
drm_dev_put(ddev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atmel_hlcdc_dc_drm_suspend(struct device *dev)
|
|
{
|
|
struct drm_device *drm_dev = dev_get_drvdata(dev);
|
|
struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
|
|
struct regmap *regmap = dc->hlcdc->regmap;
|
|
struct drm_atomic_state *state;
|
|
|
|
state = drm_atomic_helper_suspend(drm_dev);
|
|
if (IS_ERR(state))
|
|
return PTR_ERR(state);
|
|
|
|
dc->suspend.state = state;
|
|
|
|
regmap_read(regmap, ATMEL_HLCDC_IMR, &dc->suspend.imr);
|
|
regmap_write(regmap, ATMEL_HLCDC_IDR, dc->suspend.imr);
|
|
clk_disable_unprepare(dc->hlcdc->periph_clk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int atmel_hlcdc_dc_drm_resume(struct device *dev)
|
|
{
|
|
struct drm_device *drm_dev = dev_get_drvdata(dev);
|
|
struct atmel_hlcdc_dc *dc = drm_dev->dev_private;
|
|
|
|
clk_prepare_enable(dc->hlcdc->periph_clk);
|
|
regmap_write(dc->hlcdc->regmap, ATMEL_HLCDC_IER, dc->suspend.imr);
|
|
|
|
return drm_atomic_helper_resume(drm_dev, dc->suspend.state);
|
|
}
|
|
|
|
static DEFINE_SIMPLE_DEV_PM_OPS(atmel_hlcdc_dc_drm_pm_ops,
|
|
atmel_hlcdc_dc_drm_suspend,
|
|
atmel_hlcdc_dc_drm_resume);
|
|
|
|
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",
|
|
.pm = pm_sleep_ptr(&atmel_hlcdc_dc_drm_pm_ops),
|
|
.of_match_table = atmel_hlcdc_dc_of_match,
|
|
},
|
|
};
|
|
drm_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");
|