cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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dev-spi.c (1593B)

      1/*
      2 * This file is subject to the terms and conditions of the GNU General Public
      3 * License.  See the file "COPYING" in the main directory of this archive
      4 * for more details.
      5 *
      6 * Copyright (C) 2009-2011 Florian Fainelli <florian@openwrt.org>
      7 * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
      8 */
      9
     10#include <linux/init.h>
     11#include <linux/kernel.h>
     12#include <linux/export.h>
     13#include <linux/platform_device.h>
     14#include <linux/err.h>
     15#include <linux/clk.h>
     16
     17#include <bcm63xx_cpu.h>
     18#include <bcm63xx_dev_spi.h>
     19#include <bcm63xx_regs.h>
     20
     21static struct resource spi_resources[] = {
     22	{
     23		.start		= -1, /* filled at runtime */
     24		.end		= -1, /* filled at runtime */
     25		.flags		= IORESOURCE_MEM,
     26	},
     27	{
     28		.start		= -1, /* filled at runtime */
     29		.flags		= IORESOURCE_IRQ,
     30	},
     31};
     32
     33static struct platform_device bcm63xx_spi_device = {
     34	.id		= -1,
     35	.num_resources	= ARRAY_SIZE(spi_resources),
     36	.resource	= spi_resources,
     37};
     38
     39int __init bcm63xx_spi_register(void)
     40{
     41	if (BCMCPU_IS_6328() || BCMCPU_IS_6345())
     42		return -ENODEV;
     43
     44	spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
     45	spi_resources[0].end = spi_resources[0].start;
     46	spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
     47
     48	if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) {
     49		bcm63xx_spi_device.name = "bcm6348-spi",
     50		spi_resources[0].end += BCM_6348_RSET_SPI_SIZE - 1;
     51	}
     52
     53	if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6362() ||
     54		BCMCPU_IS_6368()) {
     55		bcm63xx_spi_device.name = "bcm6358-spi",
     56		spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1;
     57	}
     58
     59	return platform_device_register(&bcm63xx_spi_device);
     60}