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 #ifdef BCMCPU_RUNTIME_DETECT 22 /* 23 * register offsets 24 */ 25 static const unsigned long bcm6348_regs_spi[] = { 26 __GEN_SPI_REGS_TABLE(6348) 27 }; 28 29 static const unsigned long bcm6358_regs_spi[] = { 30 __GEN_SPI_REGS_TABLE(6358) 31 }; 32 33 const unsigned long *bcm63xx_regs_spi; 34 EXPORT_SYMBOL(bcm63xx_regs_spi); 35 36 static __init void bcm63xx_spi_regs_init(void) 37 { 38 if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) 39 bcm63xx_regs_spi = bcm6348_regs_spi; 40 if (BCMCPU_IS_6358() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) 41 bcm63xx_regs_spi = bcm6358_regs_spi; 42 } 43 #else 44 static __init void bcm63xx_spi_regs_init(void) { } 45 #endif 46 47 static struct resource spi_resources[] = { 48 { 49 .start = -1, /* filled at runtime */ 50 .end = -1, /* filled at runtime */ 51 .flags = IORESOURCE_MEM, 52 }, 53 { 54 .start = -1, /* filled at runtime */ 55 .flags = IORESOURCE_IRQ, 56 }, 57 }; 58 59 static struct bcm63xx_spi_pdata spi_pdata = { 60 .bus_num = 0, 61 .num_chipselect = 8, 62 }; 63 64 static struct platform_device bcm63xx_spi_device = { 65 .name = "bcm63xx-spi", 66 .id = -1, 67 .num_resources = ARRAY_SIZE(spi_resources), 68 .resource = spi_resources, 69 .dev = { 70 .platform_data = &spi_pdata, 71 }, 72 }; 73 74 int __init bcm63xx_spi_register(void) 75 { 76 if (BCMCPU_IS_6328() || BCMCPU_IS_6345()) 77 return -ENODEV; 78 79 spi_resources[0].start = bcm63xx_regset_address(RSET_SPI); 80 spi_resources[0].end = spi_resources[0].start; 81 spi_resources[1].start = bcm63xx_get_irq_number(IRQ_SPI); 82 83 if (BCMCPU_IS_6338() || BCMCPU_IS_6348()) { 84 spi_resources[0].end += BCM_6348_RSET_SPI_SIZE - 1; 85 spi_pdata.fifo_size = SPI_6348_MSG_DATA_SIZE; 86 spi_pdata.msg_type_shift = SPI_6348_MSG_TYPE_SHIFT; 87 spi_pdata.msg_ctl_width = SPI_6348_MSG_CTL_WIDTH; 88 } 89 90 if (BCMCPU_IS_6358() || BCMCPU_IS_6362() || BCMCPU_IS_6368()) { 91 spi_resources[0].end += BCM_6358_RSET_SPI_SIZE - 1; 92 spi_pdata.fifo_size = SPI_6358_MSG_DATA_SIZE; 93 spi_pdata.msg_type_shift = SPI_6358_MSG_TYPE_SHIFT; 94 spi_pdata.msg_ctl_width = SPI_6358_MSG_CTL_WIDTH; 95 } 96 97 bcm63xx_spi_regs_init(); 98 99 return platform_device_register(&bcm63xx_spi_device); 100 } 101