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https://github.com/torvalds/linux
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406c8563a7
This patch converts vrfb library into a platform device, in an effort to remove omap dependencies. The platform device is registered in arch/arm/plat-omap/fb.c and assigned resources depending on whether running on omap2 or omap3. The vrfb driver will parse those resources and use them to access vrfb configuration registers and the vrfb virtual rotation areas. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Tony Lindgren <tony@atomide.com>
165 lines
4.5 KiB
C
165 lines
4.5 KiB
C
/*
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* File: arch/arm/plat-omap/fb.c
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*
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* Framebuffer device registration for TI OMAP platforms
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*
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* Copyright (C) 2006 Nokia Corporation
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* Author: Imre Deak <imre.deak@nokia.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 as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/memblock.h>
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#include <linux/io.h>
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#include <linux/omapfb.h>
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#include <mach/hardware.h>
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#include <asm/mach/map.h>
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#include <plat/cpu.h>
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#ifdef CONFIG_OMAP2_VRFB
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/*
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* The first memory resource is the register region for VRFB,
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* the rest are VRFB virtual memory areas for each VRFB context.
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*/
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static const struct resource omap2_vrfb_resources[] = {
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DEFINE_RES_MEM_NAMED(0x68008000u, 0x40, "vrfb-regs"),
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DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
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DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
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DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
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DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
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};
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static const struct resource omap3_vrfb_resources[] = {
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DEFINE_RES_MEM_NAMED(0x6C000180u, 0xc0, "vrfb-regs"),
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DEFINE_RES_MEM_NAMED(0x70000000u, 0x4000000, "vrfb-area-0"),
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DEFINE_RES_MEM_NAMED(0x74000000u, 0x4000000, "vrfb-area-1"),
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DEFINE_RES_MEM_NAMED(0x78000000u, 0x4000000, "vrfb-area-2"),
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DEFINE_RES_MEM_NAMED(0x7c000000u, 0x4000000, "vrfb-area-3"),
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DEFINE_RES_MEM_NAMED(0xe0000000u, 0x4000000, "vrfb-area-4"),
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DEFINE_RES_MEM_NAMED(0xe4000000u, 0x4000000, "vrfb-area-5"),
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DEFINE_RES_MEM_NAMED(0xe8000000u, 0x4000000, "vrfb-area-6"),
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DEFINE_RES_MEM_NAMED(0xec000000u, 0x4000000, "vrfb-area-7"),
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DEFINE_RES_MEM_NAMED(0xf0000000u, 0x4000000, "vrfb-area-8"),
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DEFINE_RES_MEM_NAMED(0xf4000000u, 0x4000000, "vrfb-area-9"),
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DEFINE_RES_MEM_NAMED(0xf8000000u, 0x4000000, "vrfb-area-10"),
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DEFINE_RES_MEM_NAMED(0xfc000000u, 0x4000000, "vrfb-area-11"),
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};
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static int __init omap_init_vrfb(void)
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{
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struct platform_device *pdev;
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const struct resource *res;
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unsigned int num_res;
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if (cpu_is_omap24xx()) {
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res = omap2_vrfb_resources;
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num_res = ARRAY_SIZE(omap2_vrfb_resources);
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} else if (cpu_is_omap34xx()) {
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res = omap3_vrfb_resources;
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num_res = ARRAY_SIZE(omap3_vrfb_resources);
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} else {
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return 0;
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}
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pdev = platform_device_register_resndata(NULL, "omapvrfb", -1,
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res, num_res, NULL, 0);
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if (IS_ERR(pdev))
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return PTR_ERR(pdev);
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else
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return 0;
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}
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arch_initcall(omap_init_vrfb);
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#endif
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#if defined(CONFIG_FB_OMAP) || defined(CONFIG_FB_OMAP_MODULE)
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static bool omapfb_lcd_configured;
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static struct omapfb_platform_data omapfb_config;
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static u64 omap_fb_dma_mask = ~(u32)0;
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static struct platform_device omap_fb_device = {
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.name = "omapfb",
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.id = -1,
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.dev = {
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.dma_mask = &omap_fb_dma_mask,
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.coherent_dma_mask = ~(u32)0,
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.platform_data = &omapfb_config,
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},
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.num_resources = 0,
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};
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void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
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{
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omapfb_config.lcd = *config;
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omapfb_lcd_configured = true;
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}
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static int __init omap_init_fb(void)
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{
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/*
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* If the board file has not set the lcd config with
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* omapfb_set_lcd_config(), don't bother registering the omapfb device
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*/
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if (!omapfb_lcd_configured)
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return 0;
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return platform_device_register(&omap_fb_device);
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}
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arch_initcall(omap_init_fb);
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#elif defined(CONFIG_FB_OMAP2) || defined(CONFIG_FB_OMAP2_MODULE)
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static u64 omap_fb_dma_mask = ~(u32)0;
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static struct omapfb_platform_data omapfb_config;
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static struct platform_device omap_fb_device = {
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.name = "omapfb",
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.id = -1,
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.dev = {
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.dma_mask = &omap_fb_dma_mask,
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.coherent_dma_mask = ~(u32)0,
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.platform_data = &omapfb_config,
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},
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.num_resources = 0,
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};
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static int __init omap_init_fb(void)
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{
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return platform_device_register(&omap_fb_device);
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}
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arch_initcall(omap_init_fb);
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#else
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void __init omapfb_set_lcd_config(const struct omap_lcd_config *config)
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{
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}
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#endif
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