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 bcm6348_regs_spi[] = {
26 __GEN_SPI_REGS_TABLE(6348)
29 static const unsigned long bcm6358_regs_spi[] = {
30 __GEN_SPI_REGS_TABLE(6358)
33 const unsigned long *bcm63xx_regs_spi;
34 EXPORT_SYMBOL(bcm63xx_regs_spi);
36 static __init void bcm63xx_spi_regs_init(void)
38 if (BCMCPU_IS_6338() || BCMCPU_IS_6348())
39 bcm63xx_regs_spi = bcm6348_regs_spi;
40 if (BCMCPU_IS_6358() || BCMCPU_IS_6368())
41 bcm63xx_regs_spi = bcm6358_regs_spi;
44 static __init void bcm63xx_spi_regs_init(void) { }
47 static struct resource spi_resources[] = {
49 .start = -1, /* filled at runtime */
50 .end = -1, /* filled at runtime */
51 .flags = IORESOURCE_MEM,
54 .start = -1, /* filled at runtime */
55 .flags = IORESOURCE_IRQ,
59 static struct bcm63xx_spi_pdata spi_pdata = {
64 static struct platform_device bcm63xx_spi_device = {
65 .name = "bcm63xx-spi",
67 .num_resources = ARRAY_SIZE(spi_resources),
68 .resource = spi_resources,
70 .platform_data = &spi_pdata,
74 int __init bcm63xx_spi_register(void)
76 struct clk *periph_clk;
78 if (BCMCPU_IS_6328() || BCMCPU_IS_6345())
81 periph_clk = clk_get(NULL, "periph");
82 if (IS_ERR(periph_clk)) {
83 pr_err("unable to get periph clock\n");
87 /* Set bus frequency */
88 spi_pdata.speed_hz = clk_get_rate(periph_clk);
90 spi_resources[0].start = bcm63xx_regset_address(RSET_SPI);
91 spi_resources[0].end = spi_resources[0].start;
92 spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI);
94 if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) {
95 spi_resources[0].end += BCM_6348_RSET_SPI_SIZE - 1;
96 spi_pdata.fifo_size = SPI_6348_MSG_DATA_SIZE;
97 spi_pdata.msg_type_shift = SPI_6348_MSG_TYPE_SHIFT;
98 spi_pdata.msg_ctl_width = SPI_6348_MSG_CTL_WIDTH;
101 if (BCMCPU_IS_6358() || BCMCPU_IS_6368()) {
102 spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1;
103 spi_pdata.fifo_size = SPI_6358_MSG_DATA_SIZE;
104 spi_pdata.msg_type_shift = SPI_6358_MSG_TYPE_SHIFT;
105 spi_pdata.msg_ctl_width = SPI_6358_MSG_CTL_WIDTH;
108 bcm63xx_spi_regs_init();
110 return platform_device_register(&bcm63xx_spi_device);