diff options
Diffstat (limited to 'drivers/spi/dw_spi_pci.c')
| -rw-r--r-- | drivers/spi/dw_spi_pci.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/drivers/spi/dw_spi_pci.c b/drivers/spi/dw_spi_pci.c deleted file mode 100644 index 1f52755dc87..00000000000 --- a/drivers/spi/dw_spi_pci.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * mrst_spi_pci.c - PCI interface driver for DW SPI Core - * - * Copyright (c) 2009, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <linux/interrupt.h> -#include <linux/pci.h> -#include <linux/slab.h> -#include <linux/spi/dw_spi.h> -#include <linux/spi/spi.h> - -#define DRIVER_NAME "dw_spi_pci" - -struct dw_spi_pci { - struct pci_dev *pdev; - struct dw_spi dws; -}; - -static int __devinit spi_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct dw_spi_pci *dwpci; - struct dw_spi *dws; - int pci_bar = 0; - int ret; - - printk(KERN_INFO "DW: found PCI SPI controller(ID: %04x:%04x)\n", - pdev->vendor, pdev->device); - - ret = pci_enable_device(pdev); - if (ret) - return ret; - - dwpci = kzalloc(sizeof(struct dw_spi_pci), GFP_KERNEL); - if (!dwpci) { - ret = -ENOMEM; - goto err_disable; - } - - dwpci->pdev = pdev; - dws = &dwpci->dws; - - /* Get basic io resource and map it */ - dws->paddr = pci_resource_start(pdev, pci_bar); - dws->iolen = pci_resource_len(pdev, pci_bar); - - ret = pci_request_region(pdev, pci_bar, dev_name(&pdev->dev)); - if (ret) - goto err_kfree; - - dws->regs = ioremap_nocache((unsigned long)dws->paddr, - pci_resource_len(pdev, pci_bar)); - if (!dws->regs) { - ret = -ENOMEM; - goto err_release_reg; - } - - dws->parent_dev = &pdev->dev; - dws->bus_num = 0; - dws->num_cs = 4; - dws->max_freq = 25000000; /* for Moorestwon */ - dws->irq = pdev->irq; - dws->fifo_len = 40; /* FIFO has 40 words buffer */ - - ret = dw_spi_add_host(dws); - if (ret) - goto err_unmap; - - /* PCI hook and SPI hook use the same drv data */ - pci_set_drvdata(pdev, dwpci); - return 0; - -err_unmap: - iounmap(dws->regs); -err_release_reg: - pci_release_region(pdev, pci_bar); -err_kfree: - kfree(dwpci); -err_disable: - pci_disable_device(pdev); - return ret; -} - -static void __devexit spi_pci_remove(struct pci_dev *pdev) -{ - struct dw_spi_pci *dwpci = pci_get_drvdata(pdev); - - pci_set_drvdata(pdev, NULL); - dw_spi_remove_host(&dwpci->dws); - iounmap(dwpci->dws.regs); - pci_release_region(pdev, 0); - kfree(dwpci); - pci_disable_device(pdev); -} - -#ifdef CONFIG_PM -static int spi_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct dw_spi_pci *dwpci = pci_get_drvdata(pdev); - int ret; - - ret = dw_spi_suspend_host(&dwpci->dws); - if (ret) - return ret; - pci_save_state(pdev); - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - return ret; -} - -static int spi_resume(struct pci_dev *pdev) -{ - struct dw_spi_pci *dwpci = pci_get_drvdata(pdev); - int ret; - - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - ret = pci_enable_device(pdev); - if (ret) - return ret; - return dw_spi_resume_host(&dwpci->dws); -} -#else -#define spi_suspend NULL -#define spi_resume NULL -#endif - -static const struct pci_device_id pci_ids[] __devinitdata = { - /* Intel Moorestown platform SPI controller 0 */ - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0800) }, - {}, -}; - -static struct pci_driver dw_spi_driver = { - .name = DRIVER_NAME, - .id_table = pci_ids, - .probe = spi_pci_probe, - .remove = __devexit_p(spi_pci_remove), - .suspend = spi_suspend, - .resume = spi_resume, -}; - -static int __init mrst_spi_init(void) -{ - return pci_register_driver(&dw_spi_driver); -} - -static void __exit mrst_spi_exit(void) -{ - pci_unregister_driver(&dw_spi_driver); -} - -module_init(mrst_spi_init); -module_exit(mrst_spi_exit); - -MODULE_AUTHOR("Feng Tang <feng.tang@intel.com>"); -MODULE_DESCRIPTION("PCI interface driver for DW SPI Core"); -MODULE_LICENSE("GPL v2"); |