drivers/gpu/drm/loongson/loongson_device.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/loongson/loongson_device.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/loongson/loongson_device.c
Extension
.c
Size
2377 bytes
Lines
103
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2023 Loongson Technology Corporation Limited
 */

#include <linux/pci.h>

#include "lsdc_drv.h"

static const struct lsdc_kms_funcs ls7a1000_kms_funcs = {
	.create_i2c = lsdc_create_i2c_chan,
	.irq_handler = ls7a1000_dc_irq_handler,
	.output_init = ls7a1000_output_init,
	.cursor_plane_init = ls7a1000_cursor_plane_init,
	.primary_plane_init = lsdc_primary_plane_init,
	.crtc_init = ls7a1000_crtc_init,
};

static const struct lsdc_kms_funcs ls7a2000_kms_funcs = {
	.create_i2c = lsdc_create_i2c_chan,
	.irq_handler = ls7a2000_dc_irq_handler,
	.output_init = ls7a2000_output_init,
	.cursor_plane_init = ls7a2000_cursor_plane_init,
	.primary_plane_init = lsdc_primary_plane_init,
	.crtc_init = ls7a2000_crtc_init,
};

static const struct loongson_gfx_desc ls7a1000_gfx = {
	.dc = {
		.num_of_crtc = 2,
		.max_pixel_clk = 200000,
		.max_width = 2048,
		.max_height = 2048,
		.num_of_hw_cursor = 1,
		.hw_cursor_w = 32,
		.hw_cursor_h = 32,
		.pitch_align = 256,
		.has_vblank_counter = false,
		.funcs = &ls7a1000_kms_funcs,
	},
	.conf_reg_base = LS7A1000_CONF_REG_BASE,
	.gfxpll = {
		.reg_offset = LS7A1000_PLL_GFX_REG,
		.reg_size = 8,
	},
	.pixpll = {
		[0] = {
			.reg_offset = LS7A1000_PIXPLL0_REG,
			.reg_size = 8,
		},
		[1] = {
			.reg_offset = LS7A1000_PIXPLL1_REG,
			.reg_size = 8,
		},
	},
	.chip_id = CHIP_LS7A1000,
	.model = "LS7A1000 bridge chipset",
};

static const struct loongson_gfx_desc ls7a2000_gfx = {
	.dc = {
		.num_of_crtc = 2,
		.max_pixel_clk = 350000,
		.max_width = 4096,
		.max_height = 4096,
		.num_of_hw_cursor = 2,
		.hw_cursor_w = 64,
		.hw_cursor_h = 64,
		.pitch_align = 64,
		.has_vblank_counter = true,
		.funcs = &ls7a2000_kms_funcs,
	},
	.conf_reg_base = LS7A2000_CONF_REG_BASE,
	.gfxpll = {
		.reg_offset = LS7A2000_PLL_GFX_REG,
		.reg_size = 8,
	},
	.pixpll = {
		[0] = {
			.reg_offset = LS7A2000_PIXPLL0_REG,
			.reg_size = 8,
		},
		[1] = {
			.reg_offset = LS7A2000_PIXPLL1_REG,
			.reg_size = 8,
		},
	},
	.chip_id = CHIP_LS7A2000,
	.model = "LS7A2000 bridge chipset",
};

Annotation

Implementation Notes