diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-26 10:23:47 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-26 10:23:47 -0700 |
commit | 9fc377799bc9bfd8d5cb35d0d1ea2e2458cbdbb3 (patch) | |
tree | fe93603b4e33dd50ff5f95ff769a0748b230cdf9 /drivers/usb/chipidea/ci13xxx_imx.c | |
parent | 5e23ae49960d05f578a73ecd19749c45af682c2b (diff) | |
parent | e387ef5c47ddeaeaa3cbdc54424cdb7a28dae2c0 (diff) |
Merge tag 'usb-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB patches from Greg Kroah-Hartman:
"Here's the big USB patch set for the 3.6-rc1 merge window.
Lots of little changes in here, primarily for gadget controllers and
drivers. There's some scsi changes that I think also went in through
the scsi tree, but they merge just fine. All of these patches have
been in the linux-next tree for a while now.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fix up trivial conflicts in include/scsi/scsi_device.h (same libata
conflict that Jeff had already encountered)
* tag 'usb-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (207 commits)
usb: Add USB_QUIRK_RESET_RESUME for all Logitech UVC webcams
usb: Add quirk detection based on interface information
usb: s3c-hsotg: Add header file protection macros in s3c-hsotg.h
USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer
USB: add USB_VENDOR_AND_INTERFACE_INFO() macro
USB: notify phy when root hub port connect change
USB: remove 8 bytes of padding from usb_host_interface on 64 bit builds
USB: option: add ZTE MF821D
USB: sierra: QMI mode MC7710 moved to qcserial
USB: qcserial: adding Sierra Wireless devices
USB: qcserial: support generic Qualcomm serial ports
USB: qcserial: make probe more flexible
USB: qcserial: centralize probe exit path
USB: qcserial: consolidate usb_set_interface calls
USB: ehci-s5p: Add support for device tree
USB: ohci-exynos: Add support for device tree
USB: ehci-omap: fix compile failure(v1)
usb: host: tegra: pass correct pointer in ehci_setup()
USB: ehci-fsl: Update ifdef check to work on 64-bit ppc
USB: serial: keyspan: Removed unrequired parentheses.
...
Diffstat (limited to 'drivers/usb/chipidea/ci13xxx_imx.c')
-rw-r--r-- | drivers/usb/chipidea/ci13xxx_imx.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/ci13xxx_imx.c b/drivers/usb/chipidea/ci13xxx_imx.c new file mode 100644 index 000000000000..ef60d06835d0 --- /dev/null +++ b/drivers/usb/chipidea/ci13xxx_imx.c @@ -0,0 +1,198 @@ +/* + * Copyright 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2012 Marek Vasut <marex@denx.de> + * on behalf of DENX Software Engineering GmbH + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/dma-mapping.h> +#include <linux/usb/chipidea.h> +#include <linux/clk.h> +#include <linux/regulator/consumer.h> + +#include "ci.h" + +#define pdev_to_phy(pdev) \ + ((struct usb_phy *)platform_get_drvdata(pdev)) + +struct ci13xxx_imx_data { + struct device_node *phy_np; + struct usb_phy *phy; + struct platform_device *ci_pdev; + struct clk *clk; + struct regulator *reg_vbus; +}; + +static struct ci13xxx_platform_data ci13xxx_imx_platdata __devinitdata = { + .name = "ci13xxx_imx", + .flags = CI13XXX_REQUIRE_TRANSCEIVER | + CI13XXX_PULLUP_ON_VBUS | + CI13XXX_DISABLE_STREAMING, + .capoffset = DEF_CAPOFFSET, +}; + +static int __devinit ci13xxx_imx_probe(struct platform_device *pdev) +{ + struct ci13xxx_imx_data *data; + struct platform_device *plat_ci, *phy_pdev; + struct device_node *phy_np; + struct resource *res; + struct regulator *reg_vbus; + int ret; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) { + dev_err(&pdev->dev, "Failed to allocate CI13xxx-IMX data!\n"); + return -ENOMEM; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "Can't get device resources!\n"); + return -ENOENT; + } + + data->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(data->clk)) { + dev_err(&pdev->dev, + "Failed to get clock, err=%ld\n", PTR_ERR(data->clk)); + return PTR_ERR(data->clk); + } + + ret = clk_prepare_enable(data->clk); + if (ret) { + dev_err(&pdev->dev, + "Failed to prepare or enable clock, err=%d\n", ret); + return ret; + } + + phy_np = of_parse_phandle(pdev->dev.of_node, "fsl,usbphy", 0); + if (phy_np) { + data->phy_np = phy_np; + phy_pdev = of_find_device_by_node(phy_np); + if (phy_pdev) { + struct usb_phy *phy; + phy = pdev_to_phy(phy_pdev); + if (phy && + try_module_get(phy_pdev->dev.driver->owner)) { + usb_phy_init(phy); + data->phy = phy; + } + } + } + + /* we only support host now, so enable vbus here */ + reg_vbus = devm_regulator_get(&pdev->dev, "vbus"); + if (!IS_ERR(reg_vbus)) { + ret = regulator_enable(reg_vbus); + if (ret) { + dev_err(&pdev->dev, + "Failed to enable vbus regulator, err=%d\n", + ret); + goto put_np; + } + data->reg_vbus = reg_vbus; + } else { + reg_vbus = NULL; + } + + ci13xxx_imx_platdata.phy = data->phy; + + if (!pdev->dev.dma_mask) { + pdev->dev.dma_mask = devm_kzalloc(&pdev->dev, + sizeof(*pdev->dev.dma_mask), GFP_KERNEL); + if (!pdev->dev.dma_mask) { + ret = -ENOMEM; + dev_err(&pdev->dev, "Failed to alloc dma_mask!\n"); + goto err; + } + *pdev->dev.dma_mask = DMA_BIT_MASK(32); + dma_set_coherent_mask(&pdev->dev, *pdev->dev.dma_mask); + } + plat_ci = ci13xxx_add_device(&pdev->dev, + pdev->resource, pdev->num_resources, + &ci13xxx_imx_platdata); + if (IS_ERR(plat_ci)) { + ret = PTR_ERR(plat_ci); + dev_err(&pdev->dev, + "Can't register ci_hdrc platform device, err=%d\n", + ret); + goto err; + } + + data->ci_pdev = plat_ci; + platform_set_drvdata(pdev, data); + + pm_runtime_no_callbacks(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return 0; + +err: + if (reg_vbus) + regulator_disable(reg_vbus); +put_np: + if (phy_np) + of_node_put(phy_np); + clk_disable_unprepare(data->clk); + return ret; +} + +static int __devexit ci13xxx_imx_remove(struct platform_device *pdev) +{ + struct ci13xxx_imx_data *data = platform_get_drvdata(pdev); + + pm_runtime_disable(&pdev->dev); + ci13xxx_remove_device(data->ci_pdev); + + if (data->reg_vbus) + regulator_disable(data->reg_vbus); + + if (data->phy) { + usb_phy_shutdown(data->phy); + module_put(data->phy->dev->driver->owner); + } + + of_node_put(data->phy_np); + + clk_disable_unprepare(data->clk); + + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static const struct of_device_id ci13xxx_imx_dt_ids[] = { + { .compatible = "fsl,imx27-usb", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ci13xxx_imx_dt_ids); + +static struct platform_driver ci13xxx_imx_driver = { + .probe = ci13xxx_imx_probe, + .remove = __devexit_p(ci13xxx_imx_remove), + .driver = { + .name = "imx_usb", + .owner = THIS_MODULE, + .of_match_table = ci13xxx_imx_dt_ids, + }, +}; + +module_platform_driver(ci13xxx_imx_driver); + +MODULE_ALIAS("platform:imx-usb"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("CI13xxx i.MX USB binding"); +MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); +MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |