diff options
Diffstat (limited to 'drivers/usb/gadget/fsl_tegra_udc.c')
-rw-r--r-- | drivers/usb/gadget/fsl_tegra_udc.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/drivers/usb/gadget/fsl_tegra_udc.c b/drivers/usb/gadget/fsl_tegra_udc.c deleted file mode 100644 index 31b476ad2279..000000000000 --- a/drivers/usb/gadget/fsl_tegra_udc.c +++ /dev/null @@ -1,170 +0,0 @@ -/* - * Description: - * Helper functions to support the tegra USB controller - * - * 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. - */ -#include <linux/fsl_devices.h> -#include <linux/platform_device.h> -#include <linux/err.h> -#include <linux/io.h> -#include <mach/usb_phy.h> - -static struct tegra_usb_phy *phy; -static struct clk *udc_clk; -static struct clk *emc_clk; -static struct clk *sclk_clk; -static void *udc_base; - -int fsl_udc_clk_init(struct platform_device *pdev) -{ - struct resource *res; - int err; - int instance; - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; - - - udc_clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(udc_clk)) { - dev_err(&pdev->dev, "Can't get udc clock\n"); - return PTR_ERR(udc_clk); - } - - clk_enable(udc_clk); - - sclk_clk = clk_get(&pdev->dev, "sclk"); - if (IS_ERR(sclk_clk)) { - dev_err(&pdev->dev, "Can't get sclk clock\n"); - err = PTR_ERR(sclk_clk); - goto err_sclk; - } - - clk_set_rate(sclk_clk, 80000000); - clk_enable(sclk_clk); - - emc_clk = clk_get(&pdev->dev, "emc"); - if (IS_ERR(emc_clk)) { - dev_err(&pdev->dev, "Can't get emc clock\n"); - err = PTR_ERR(emc_clk); - goto err_emc; - } - - clk_enable(emc_clk); -#ifdef CONFIG_ARCH_TEGRA_2x_SOC - /* Set DDR busy hints to 150MHz. For Tegra 2x SOC, DDR rate is half of EMC rate */ - clk_set_rate(emc_clk, 300000000); -#else - /* Set DDR busy hints to 100MHz. For Tegra 3x SOC DDR rate equals to EMC rate */ - clk_set_rate(emc_clk, 100000000); -#endif - - /* we have to remap the registers ourselves as fsl_udc does not - * export them for us. - */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - err = -ENXIO; - goto err0; - } - udc_base = ioremap(res->start, resource_size(res)); - if (!udc_base) { - err = -ENOMEM; - goto err0; - } - - instance = pdev->id; - if (instance == -1) - instance = 0; - - phy = tegra_usb_phy_open(instance, udc_base, pdata->phy_config, - TEGRA_USB_PHY_MODE_DEVICE, pdata->usb_phy_type); - if (IS_ERR(phy)) { - dev_err(&pdev->dev, "Can't open phy\n"); - err = PTR_ERR(phy); - goto err1; - } - tegra_usb_phy_power_on(phy, true); - - return 0; -err1: - iounmap(udc_base); -err0: - clk_disable(emc_clk); - clk_put(emc_clk); -err_emc: - clk_disable(sclk_clk); - clk_put(sclk_clk); -err_sclk: - clk_disable(udc_clk); - clk_put(udc_clk); - return err; -} - -void fsl_udc_clk_finalize(struct platform_device *pdev) -{ -} - -void fsl_udc_clk_release(void) -{ - tegra_usb_phy_close(phy); - - iounmap(udc_base); - - clk_disable(udc_clk); - clk_put(udc_clk); - - clk_disable(sclk_clk); - clk_put(sclk_clk); - - clk_disable(emc_clk); - clk_put(emc_clk); -} - -void fsl_udc_clk_suspend(bool is_dpd) -{ - tegra_usb_phy_power_off(phy, is_dpd); - clk_disable(udc_clk); - clk_disable(sclk_clk); - clk_disable(emc_clk); -} - -void fsl_udc_clk_resume(bool is_dpd) -{ - clk_enable(emc_clk); - clk_enable(sclk_clk); - clk_enable(udc_clk); - tegra_usb_phy_power_on(phy, is_dpd); -} - -void fsl_udc_clk_enable(void) -{ - clk_enable(udc_clk); -} - -void fsl_udc_clk_disable(void) -{ - clk_disable(udc_clk); -} - -bool fsl_udc_charger_detect(void) -{ - return tegra_usb_phy_charger_detect(phy); -} - -void fsl_udc_dtd_prepare(void) -{ - /* When we are programming two DTDs very close to each other, - * the second DTD is being prefetched before it is actually written - * to DDR. To prevent this, we disable prefetcher before programming - * any new DTD and re-enable it before priming endpoint. - */ - tegra_usb_phy_memory_prefetch_off(phy); -} - -void fsl_udc_ep_barrier(void) -{ - tegra_usb_phy_memory_prefetch_on(phy); -} |