forked from Minki/linux
aa9aa1ec2d
Remove fake platform device used for PM init. Move pdata values which are common across all current platforms into pm.c. Also, since PM is only used on da8xx, remove davinci_pm_init() from common init code, and only use in da850/omapl138 board files that are currently creating the fake platform_device. Suggested-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> [nsekhar@ti.com: subject line adjustment] Signed-off-by: Sekhar Nori <nsekhar@ti.com>
123 lines
2.9 KiB
C
123 lines
2.9 KiB
C
/*
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* Code commons to all DaVinci SoCs.
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*
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* Author: Mark A. Greer <mgreer@mvista.com>
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*
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* 2009 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <linux/module.h>
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#include <linux/io.h>
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#include <linux/etherdevice.h>
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#include <linux/davinci_emac.h>
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#include <linux/dma-mapping.h>
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#include <asm/tlb.h>
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#include <asm/mach/map.h>
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#include <mach/common.h>
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#include <mach/cputype.h>
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#include "clock.h"
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struct davinci_soc_info davinci_soc_info;
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EXPORT_SYMBOL(davinci_soc_info);
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void __iomem *davinci_intc_base;
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int davinci_intc_type;
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void davinci_get_mac_addr(struct nvmem_device *nvmem, void *context)
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{
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char *mac_addr = davinci_soc_info.emac_pdata->mac_addr;
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off_t offset = (off_t)context;
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if (!IS_BUILTIN(CONFIG_NVMEM)) {
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pr_warn("Cannot read MAC addr from EEPROM without CONFIG_NVMEM\n");
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return;
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}
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/* Read MAC addr from EEPROM */
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if (nvmem_device_read(nvmem, offset, ETH_ALEN, mac_addr) == ETH_ALEN)
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pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
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}
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static int __init davinci_init_id(struct davinci_soc_info *soc_info)
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{
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int i;
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struct davinci_id *dip;
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u8 variant;
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u16 part_no;
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void __iomem *base;
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base = ioremap(soc_info->jtag_id_reg, SZ_4K);
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if (!base) {
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pr_err("Unable to map JTAG ID register\n");
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return -ENOMEM;
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}
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soc_info->jtag_id = __raw_readl(base);
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iounmap(base);
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variant = (soc_info->jtag_id & 0xf0000000) >> 28;
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part_no = (soc_info->jtag_id & 0x0ffff000) >> 12;
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for (i = 0, dip = soc_info->ids; i < soc_info->ids_num;
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i++, dip++)
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/* Don't care about the manufacturer right now */
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if ((dip->part_no == part_no) && (dip->variant == variant)) {
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soc_info->cpu_id = dip->cpu_id;
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pr_info("DaVinci %s variant 0x%x\n", dip->name,
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dip->variant);
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return 0;
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}
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pr_err("Unknown DaVinci JTAG ID 0x%x\n", soc_info->jtag_id);
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return -EINVAL;
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}
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void __init davinci_common_init(struct davinci_soc_info *soc_info)
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{
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int ret;
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if (!soc_info) {
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ret = -EINVAL;
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goto err;
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}
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memcpy(&davinci_soc_info, soc_info, sizeof(struct davinci_soc_info));
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if (davinci_soc_info.io_desc && (davinci_soc_info.io_desc_num > 0))
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iotable_init(davinci_soc_info.io_desc,
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davinci_soc_info.io_desc_num);
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/*
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* Normally devicemaps_init() would flush caches and tlb after
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* mdesc->map_io(), but we must also do it here because of the CPU
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* revision check below.
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*/
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local_flush_tlb_all();
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flush_cache_all();
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/*
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* We want to check CPU revision early for cpu_is_xxxx() macros.
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* IO space mapping must be initialized before we can do that.
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*/
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ret = davinci_init_id(&davinci_soc_info);
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if (ret < 0)
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goto err;
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return;
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err:
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panic("davinci_common_init: SoC Initialization failed\n");
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}
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void __init davinci_init_late(void)
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{
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davinci_cpufreq_init();
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davinci_clk_disable_unused();
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}
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