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
6 * Copyright (C) 2009-2011 Florian Fainelli <florian@openwrt.org>
7 * Copyright (C) 2010 Tanguy Bouzeloc <tanguy.bouzeloc@efixo.com>
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>
17 #include <bcm63xx_cpu.h>
18 #include <bcm63xx_dev_spi.h>
19 #include <bcm63xx_regs.h>
21 #ifdef BCMCPU_RUNTIME_DETECT
25 static const unsigned long bcm6338_regs_spi[] = {
26 __GEN_SPI_REGS_TABLE(6338)
29 static const unsigned long bcm6348_regs_spi[] = {
30 __GEN_SPI_REGS_TABLE(6348)
33 static const unsigned long bcm6358_regs_spi[] = {
34 __GEN_SPI_REGS_TABLE(6358)
37 static const unsigned long bcm6368_regs_spi[] = {
38 __GEN_SPI_REGS_TABLE(6368)
41 const unsigned long *bcm63xx_regs_spi;
42 EXPORT_SYMBOL(bcm63xx_regs_spi);
44 static __init void bcm63xx_spi_regs_init(void)
47 bcm63xx_regs_spi = bcm6338_regs_spi;
49 bcm63xx_regs_spi = bcm6348_regs_spi;
51 bcm63xx_regs_spi = bcm6358_regs_spi;
53 bcm63xx_regs_spi = bcm6368_regs_spi;
56 static __init void bcm63xx_spi_regs_init(void) { }
59 static struct resource spi_resources[] = {
61 .start = -1, /* filled at runtime */
62 .end = -1, /* filled at runtime */
63 .flags = IORESOURCE_MEM,
66 .start = -1, /* filled at runtime */
67 .flags = IORESOURCE_IRQ,
71 static struct bcm63xx_spi_pdata spi_pdata = {
76 static struct platform_device bcm63xx_spi_device = {
77 .name = "bcm63xx-spi",
79 .num_resources = ARRAY_SIZE(spi_resources),
80 .resource = spi_resources,
82 .platform_data = &spi_pdata,
86 int __init bcm63xx_spi_register(void)
88 struct clk *periph_clk;
90 if (BCMCPU_IS_6328() || BCMCPU_IS_6345())
93 periph_clk = clk_get(NULL, "periph");
94 if (IS_ERR(periph_clk)) {
95 pr_err("unable to get periph clock\n");
99 /* Set bus frequency */
100 spi_pdata.speed_hz = clk_get_rate(periph_clk);
102 spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
103 spi_resources[0].end = spi_resources[0].start;
104 spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
106 if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) {
107 spi_resources[0].end += BCM_6338_RSET_SPI_SIZE - 1;
108 spi_pdata.fifo_size = SPI_6338_MSG_DATA_SIZE;
111 if (BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
112 spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1;
113 spi_pdata.fifo_size = SPI_6358_MSG_DATA_SIZE;
116 bcm63xx_spi_regs_init();
118 return platform_device_register(&bcm63xx_spi_device);