1be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson/* 2be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * Copyright (C) 2007 PA Semi, Inc 3be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * 4be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * Parts based on arch/powerpc/sysdev/fsl_soc.c: 5be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * 6be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * 2006 (c) MontaVista Software, Inc. 7be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * 8be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * This program is free software; you can redistribute it and/or modify it 9be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * under the terms of the GNU General Public License as published by the 10be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * Free Software Foundation; either version 2 of the License, or (at your 11be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * option) any later version. 12be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson */ 13be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 14be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson#include <linux/errno.h> 15be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson#include <linux/kernel.h> 16be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson#include <linux/pci.h> 17be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson#include <linux/of.h> 18be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson#include <linux/i2c.h> 19be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 20be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson#ifdef CONFIG_I2C_BOARDINFO 21be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson/* The below is from fsl_soc.c. It's copied because since there are no 22be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * official bus bindings at this time it doesn't make sense to share across 23be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson * the platforms, even though they happen to be common. 24be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson */ 25be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johanssonstruct i2c_driver_device { 26be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson char *of_device; 27be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson char *i2c_type; 28be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson}; 29be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 30be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johanssonstatic struct i2c_driver_device i2c_devices[] __initdata = { 31238a871e41ffbd9ba6608cac7c8b74549ac3bb9bJean Delvare {"dallas,ds1338", "ds1338"}, 32be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson}; 33be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 34be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johanssonstatic int __init find_i2c_driver(struct device_node *node, 35be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson struct i2c_board_info *info) 36be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson{ 37be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson int i; 38be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 39be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson for (i = 0; i < ARRAY_SIZE(i2c_devices); i++) { 40be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson if (!of_device_is_compatible(node, i2c_devices[i].of_device)) 41be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson continue; 42238a871e41ffbd9ba6608cac7c8b74549ac3bb9bJean Delvare if (strlcpy(info->type, i2c_devices[i].i2c_type, 43be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson I2C_NAME_SIZE) >= I2C_NAME_SIZE) 44be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson return -ENOMEM; 45be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson return 0; 46be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson } 47be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson return -ENODEV; 48be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson} 49be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 50be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johanssonstatic int __init pasemi_register_i2c_devices(void) 51be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson{ 52be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson struct pci_dev *pdev; 53be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson struct device_node *adap_node; 54be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson struct device_node *node; 55be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 56be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson pdev = NULL; 57be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson while ((pdev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa003, pdev))) { 58be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson adap_node = pci_device_to_OF_node(pdev); 59be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 60be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson if (!adap_node) 61be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson continue; 62be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 63be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson node = NULL; 64be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson while ((node = of_get_next_child(adap_node, node))) { 65be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson struct i2c_board_info info = {}; 66be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson const u32 *addr; 67be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson int len; 68be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 69be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson addr = of_get_property(node, "reg", &len); 70be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson if (!addr || len < sizeof(int) || 71be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson *addr > (1 << 10) - 1) { 72be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson printk(KERN_WARNING 73be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson "pasemi_register_i2c_devices: " 74be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson "invalid i2c device entry\n"); 75be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson continue; 76be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson } 77be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 78be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson info.irq = irq_of_parse_and_map(node, 0); 79be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson if (info.irq == NO_IRQ) 80be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson info.irq = -1; 81be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 82be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson if (find_i2c_driver(node, &info) < 0) 83be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson continue; 84be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 85be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson info.addr = *addr; 86be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 87be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson i2c_register_board_info(PCI_FUNC(pdev->devfn), &info, 88be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson 1); 89be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson } 90be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson } 91be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson return 0; 92be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson} 93be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johanssondevice_initcall(pasemi_register_i2c_devices); 94be2553ffb5773e9a689c94bb85326c5b5f00577fOlof Johansson#endif 95