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Diffstat (limited to 'ANDROID_3.4.5/drivers/i2c/busses/i2c-designware-pcidrv.c')
-rw-r--r--ANDROID_3.4.5/drivers/i2c/busses/i2c-designware-pcidrv.c391
1 files changed, 0 insertions, 391 deletions
diff --git a/ANDROID_3.4.5/drivers/i2c/busses/i2c-designware-pcidrv.c b/ANDROID_3.4.5/drivers/i2c/busses/i2c-designware-pcidrv.c
deleted file mode 100644
index 00e8f213..00000000
--- a/ANDROID_3.4.5/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ /dev/null
@@ -1,391 +0,0 @@
-/*
- * Synopsys DesignWare I2C adapter driver (master only).
- *
- * Based on the TI DAVINCI I2C adapter driver.
- *
- * Copyright (C) 2006 Texas Instruments.
- * Copyright (C) 2007 MontaVista Software Inc.
- * Copyright (C) 2009 Provigent Ltd.
- * Copyright (C) 2011 Intel corporation.
- *
- * ----------------------------------------------------------------------------
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- * ----------------------------------------------------------------------------
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/err.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/pm_runtime.h>
-#include "i2c-designware-core.h"
-
-#define DRIVER_NAME "i2c-designware-pci"
-
-enum dw_pci_ctl_id_t {
- moorestown_0,
- moorestown_1,
- moorestown_2,
-
- medfield_0,
- medfield_1,
- medfield_2,
- medfield_3,
- medfield_4,
- medfield_5,
-};
-
-struct dw_pci_controller {
- u32 bus_num;
- u32 bus_cfg;
- u32 tx_fifo_depth;
- u32 rx_fifo_depth;
- u32 clk_khz;
-};
-
-#define INTEL_MID_STD_CFG (DW_IC_CON_MASTER | \
- DW_IC_CON_SLAVE_DISABLE | \
- DW_IC_CON_RESTART_EN)
-
-static struct dw_pci_controller dw_pci_controllers[] = {
- [moorestown_0] = {
- .bus_num = 0,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [moorestown_1] = {
- .bus_num = 1,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [moorestown_2] = {
- .bus_num = 2,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [medfield_0] = {
- .bus_num = 0,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [medfield_1] = {
- .bus_num = 1,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [medfield_2] = {
- .bus_num = 2,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [medfield_3] = {
- .bus_num = 3,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_STD,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [medfield_4] = {
- .bus_num = 4,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
- [medfield_5] = {
- .bus_num = 5,
- .bus_cfg = INTEL_MID_STD_CFG | DW_IC_CON_SPEED_FAST,
- .tx_fifo_depth = 32,
- .rx_fifo_depth = 32,
- .clk_khz = 25000,
- },
-};
-static struct i2c_algorithm i2c_dw_algo = {
- .master_xfer = i2c_dw_xfer,
- .functionality = i2c_dw_func,
-};
-
-static int i2c_dw_pci_suspend(struct device *dev)
-{
- struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
- struct dw_i2c_dev *i2c = pci_get_drvdata(pdev);
- int err;
-
-
- i2c_dw_disable(i2c);
-
- err = pci_save_state(pdev);
- if (err) {
- dev_err(&pdev->dev, "pci_save_state failed\n");
- return err;
- }
-
- err = pci_set_power_state(pdev, PCI_D3hot);
- if (err) {
- dev_err(&pdev->dev, "pci_set_power_state failed\n");
- return err;
- }
-
- return 0;
-}
-
-static int i2c_dw_pci_resume(struct device *dev)
-{
- struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
- struct dw_i2c_dev *i2c = pci_get_drvdata(pdev);
- int err;
- u32 enabled;
-
- enabled = i2c_dw_is_enabled(i2c);
- if (enabled)
- return 0;
-
- err = pci_set_power_state(pdev, PCI_D0);
- if (err) {
- dev_err(&pdev->dev, "pci_set_power_state() failed\n");
- return err;
- }
-
- pci_restore_state(pdev);
-
- i2c_dw_init(i2c);
- return 0;
-}
-
-static int i2c_dw_pci_runtime_idle(struct device *dev)
-{
- int err = pm_schedule_suspend(dev, 500);
- dev_dbg(dev, "runtime_idle called\n");
-
- if (err != 0)
- return 0;
- return -EBUSY;
-}
-
-static const struct dev_pm_ops i2c_dw_pm_ops = {
- .resume = i2c_dw_pci_resume,
- .suspend = i2c_dw_pci_suspend,
- SET_RUNTIME_PM_OPS(i2c_dw_pci_suspend, i2c_dw_pci_resume,
- i2c_dw_pci_runtime_idle)
-};
-
-static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
-{
- return dev->controller->clk_khz;
-}
-
-static int __devinit i2c_dw_pci_probe(struct pci_dev *pdev,
-const struct pci_device_id *id)
-{
- struct dw_i2c_dev *dev;
- struct i2c_adapter *adap;
- unsigned long start, len;
- void __iomem *base;
- int r;
- struct dw_pci_controller *controller;
-
- if (id->driver_data >= ARRAY_SIZE(dw_pci_controllers)) {
- printk(KERN_ERR "dw_i2c_pci_probe: invalid driver data %ld\n",
- id->driver_data);
- return -EINVAL;
- }
-
- controller = &dw_pci_controllers[id->driver_data];
-
- r = pci_enable_device(pdev);
- if (r) {
- dev_err(&pdev->dev, "Failed to enable I2C PCI device (%d)\n",
- r);
- goto exit;
- }
-
- /* Determine the address of the I2C area */
- start = pci_resource_start(pdev, 0);
- len = pci_resource_len(pdev, 0);
- if (!start || len == 0) {
- dev_err(&pdev->dev, "base address not set\n");
- r = -ENODEV;
- goto exit;
- }
-
- r = pci_request_region(pdev, 0, DRIVER_NAME);
- if (r) {
- dev_err(&pdev->dev, "failed to request I2C region "
- "0x%lx-0x%lx\n", start,
- (unsigned long)pci_resource_end(pdev, 0));
- goto exit;
- }
-
- base = ioremap_nocache(start, len);
- if (!base) {
- dev_err(&pdev->dev, "I/O memory remapping failed\n");
- r = -ENOMEM;
- goto err_release_region;
- }
-
-
- dev = kzalloc(sizeof(struct dw_i2c_dev), GFP_KERNEL);
- if (!dev) {
- r = -ENOMEM;
- goto err_release_region;
- }
-
- init_completion(&dev->cmd_complete);
- mutex_init(&dev->lock);
- dev->clk = NULL;
- dev->controller = controller;
- dev->get_clk_rate_khz = i2c_dw_get_clk_rate_khz;
- dev->base = base;
- dev->dev = get_device(&pdev->dev);
- dev->functionality =
- I2C_FUNC_I2C |
- I2C_FUNC_SMBUS_BYTE |
- I2C_FUNC_SMBUS_BYTE_DATA |
- I2C_FUNC_SMBUS_WORD_DATA |
- I2C_FUNC_SMBUS_I2C_BLOCK;
- dev->master_cfg = controller->bus_cfg;
-
- pci_set_drvdata(pdev, dev);
-
- dev->tx_fifo_depth = controller->tx_fifo_depth;
- dev->rx_fifo_depth = controller->rx_fifo_depth;
- r = i2c_dw_init(dev);
- if (r)
- goto err_iounmap;
-
- adap = &dev->adapter;
- i2c_set_adapdata(adap, dev);
- adap->owner = THIS_MODULE;
- adap->class = 0;
- adap->algo = &i2c_dw_algo;
- adap->dev.parent = &pdev->dev;
- adap->nr = controller->bus_num;
- snprintf(adap->name, sizeof(adap->name), "i2c-designware-pci-%d",
- adap->nr);
-
- r = request_irq(pdev->irq, i2c_dw_isr, IRQF_SHARED, adap->name, dev);
- if (r) {
- dev_err(&pdev->dev, "failure requesting irq %i\n", dev->irq);
- goto err_iounmap;
- }
-
- i2c_dw_disable_int(dev);
- i2c_dw_clear_int(dev);
- r = i2c_add_numbered_adapter(adap);
- if (r) {
- dev_err(&pdev->dev, "failure adding adapter\n");
- goto err_free_irq;
- }
-
- pm_runtime_put_noidle(&pdev->dev);
- pm_runtime_allow(&pdev->dev);
-
- return 0;
-
-err_free_irq:
- free_irq(pdev->irq, dev);
-err_iounmap:
- iounmap(dev->base);
- pci_set_drvdata(pdev, NULL);
- put_device(&pdev->dev);
- kfree(dev);
-err_release_region:
- pci_release_region(pdev, 0);
-exit:
- return r;
-}
-
-static void __devexit i2c_dw_pci_remove(struct pci_dev *pdev)
-{
- struct dw_i2c_dev *dev = pci_get_drvdata(pdev);
-
- i2c_dw_disable(dev);
- pm_runtime_forbid(&pdev->dev);
- pm_runtime_get_noresume(&pdev->dev);
-
- pci_set_drvdata(pdev, NULL);
- i2c_del_adapter(&dev->adapter);
- put_device(&pdev->dev);
-
- free_irq(dev->irq, dev);
- kfree(dev);
- pci_release_region(pdev, 0);
-}
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("i2c_designware-pci");
-
-static DEFINE_PCI_DEVICE_TABLE(i2_designware_pci_ids) = {
- /* Moorestown */
- { PCI_VDEVICE(INTEL, 0x0802), moorestown_0 },
- { PCI_VDEVICE(INTEL, 0x0803), moorestown_1 },
- { PCI_VDEVICE(INTEL, 0x0804), moorestown_2 },
- /* Medfield */
- { PCI_VDEVICE(INTEL, 0x0817), medfield_3,},
- { PCI_VDEVICE(INTEL, 0x0818), medfield_4 },
- { PCI_VDEVICE(INTEL, 0x0819), medfield_5 },
- { PCI_VDEVICE(INTEL, 0x082C), medfield_0 },
- { PCI_VDEVICE(INTEL, 0x082D), medfield_1 },
- { PCI_VDEVICE(INTEL, 0x082E), medfield_2 },
- { 0,}
-};
-MODULE_DEVICE_TABLE(pci, i2_designware_pci_ids);
-
-static struct pci_driver dw_i2c_driver = {
- .name = DRIVER_NAME,
- .id_table = i2_designware_pci_ids,
- .probe = i2c_dw_pci_probe,
- .remove = __devexit_p(i2c_dw_pci_remove),
- .driver = {
- .pm = &i2c_dw_pm_ops,
- },
-};
-
-static int __init dw_i2c_init_driver(void)
-{
- return pci_register_driver(&dw_i2c_driver);
-}
-module_init(dw_i2c_init_driver);
-
-static void __exit dw_i2c_exit_driver(void)
-{
- pci_unregister_driver(&dw_i2c_driver);
-}
-module_exit(dw_i2c_exit_driver);
-
-MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>");
-MODULE_DESCRIPTION("Synopsys DesignWare PCI I2C bus adapter");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-03-30 20:35:31 +0000