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 21 /* 22 * register offsets 23 */ 24 static const unsigned long bcm6348_regs_spi[] = { 25 __GEN_SPI_REGS_TABLE(6348) 26 }; 27 28 static const unsigned long bcm6358_regs_spi[] = { 29 __GEN_SPI_REGS_TABLE(6358) 30 }; 31 32 const unsigned long *bcm63xx_regs_spi; 33 EXPORT_SYMBOL(bcm63xx_regs_spi); 34 35 static __init void bcm63xx_spi_regs_init(void) 36 { 37 if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) 38 bcm63xx_regs_spi = bcm6348_regs_spi; 39 if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || 40 BCMCPU_IS_6362() || BCMCPU_IS_6368()) 41 bcm63xx_regs_spi = bcm6358_regs_spi; 42 } 43 44 static struct resource spi_resources[] = { 45 { 46 .start = -1, /* filled at runtime */ 47 .end = -1, /* filled at runtime */ 48 .flags = IORESOURCE_MEM, 49 }, 50 { 51 .start = -1, /* filled at runtime */ 52 .flags = IORESOURCE_IRQ, 53 }, 54 }; 55 56 static struct bcm63xx_spi_pdata spi_pdata = { 57 .bus_num = 0, 58 .num_chipselect = 8, 59 }; 60 61 static struct platform_device bcm63xx_spi_device = { 62 .name = "bcm63xx-spi", 63 .id = -1, 64 .num_resources = ARRAY_SIZE(spi_resources), 65 .resource = spi_resources, 66 .dev = { 67 .platform_data = &spi_pdata, 68 }, 69 }; 70 71 int __init bcm63xx_spi_register(void) 72 { 73 if (BCMCPU_IS_6328() || BCMCPU_IS_6345()) 74 return -ENODEV; 75 76 spi_resources[0].start = bcm63xx_regset_address(RSET_SPI); 77 spi_resources[0].end = spi_resources[0].start; 78 spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI); 79 80 if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) { 81 spi_resources[0].end += BCM_6348_RSET_SPI_SIZE - 1; 82 spi_pdata.fifo_size = SPI_6348_MSG_DATA_SIZE; 83 spi_pdata.msg_type_shift = SPI_6348_MSG_TYPE_SHIFT; 84 spi_pdata.msg_ctl_width = SPI_6348_MSG_CTL_WIDTH; 85 } 86 87 if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6362() || 88 BCMCPU_IS_6368()) { 89 spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1; 90 spi_pdata.fifo_size = SPI_6358_MSG_DATA_SIZE; 91 spi_pdata.msg_type_shift = SPI_6358_MSG_TYPE_SHIFT; 92 spi_pdata.msg_ctl_width = SPI_6358_MSG_CTL_WIDTH; 93 } 94 95 bcm63xx_spi_regs_init(); 96 97 return platform_device_register(&bcm63xx_spi_device); 98 } 99