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drivers/mfd/omap-usb-host.c
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/** * omap-usb-host.c - The USBHS core driver for OMAP EHCI & OHCI * |
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* Copyright (C) 2011-2013 Texas Instruments Incorporated - http://www.ti.com |
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* Author: Keshava Munegowda <keshava_mgowda@ti.com> |
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* Author: Roger Quadros <rogerq@ti.com> |
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* * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 of * the License as published by the Free Software Foundation. * * 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, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/types.h> #include <linux/slab.h> #include <linux/delay.h> |
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#include <linux/clk.h> #include <linux/dma-mapping.h> |
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#include <linux/gpio.h> |
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#include <linux/platform_device.h> #include <linux/platform_data/usb-omap.h> |
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#include <linux/pm_runtime.h> |
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#include <linux/of.h> #include <linux/of_platform.h> |
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#include <linux/err.h> |
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#include "omap-usb.h" |
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#define USBHS_DRIVER_NAME "usbhs_omap" |
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#define OMAP_EHCI_DEVICE "ehci-omap" #define OMAP_OHCI_DEVICE "ohci-omap3" /* OMAP USBHOST Register addresses */ |
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/* UHH Register Set */ #define OMAP_UHH_REVISION (0x00) #define OMAP_UHH_SYSCONFIG (0x10) #define OMAP_UHH_SYSCONFIG_MIDLEMODE (1 << 12) #define OMAP_UHH_SYSCONFIG_CACTIVITY (1 << 8) #define OMAP_UHH_SYSCONFIG_SIDLEMODE (1 << 3) #define OMAP_UHH_SYSCONFIG_ENAWAKEUP (1 << 2) #define OMAP_UHH_SYSCONFIG_SOFTRESET (1 << 1) #define OMAP_UHH_SYSCONFIG_AUTOIDLE (1 << 0) #define OMAP_UHH_SYSSTATUS (0x14) #define OMAP_UHH_HOSTCONFIG (0x40) #define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS (1 << 0) #define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS (1 << 0) #define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS (1 << 11) #define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS (1 << 12) #define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN (1 << 2) #define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN (1 << 3) #define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN (1 << 4) #define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN (1 << 5) #define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS (1 << 8) #define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS (1 << 9) #define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS (1 << 10) #define OMAP4_UHH_HOSTCONFIG_APP_START_CLK (1 << 31) /* OMAP4-specific defines */ #define OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR (3 << 2) #define OMAP4_UHH_SYSCONFIG_NOIDLE (1 << 2) #define OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR (3 << 4) #define OMAP4_UHH_SYSCONFIG_NOSTDBY (1 << 4) #define OMAP4_UHH_SYSCONFIG_SOFTRESET (1 << 0) #define OMAP4_P1_MODE_CLEAR (3 << 16) #define OMAP4_P1_MODE_TLL (1 << 16) #define OMAP4_P1_MODE_HSIC (3 << 16) #define OMAP4_P2_MODE_CLEAR (3 << 18) #define OMAP4_P2_MODE_TLL (1 << 18) #define OMAP4_P2_MODE_HSIC (3 << 18) |
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#define OMAP_UHH_DEBUG_CSR (0x44) /* Values of UHH_REVISION - Note: these are not given in the TRM */ #define OMAP_USBHS_REV1 0x00000010 /* OMAP3 */ #define OMAP_USBHS_REV2 0x50700100 /* OMAP4 */ #define is_omap_usbhs_rev1(x) (x->usbhs_rev == OMAP_USBHS_REV1) #define is_omap_usbhs_rev2(x) (x->usbhs_rev == OMAP_USBHS_REV2) #define is_ehci_phy_mode(x) (x == OMAP_EHCI_PORT_MODE_PHY) #define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL) #define is_ehci_hsic_mode(x) (x == OMAP_EHCI_PORT_MODE_HSIC) struct usbhs_hcd_omap { |
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int nports; |
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struct clk **utmi_clk; |
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struct clk **hsic60m_clk; struct clk **hsic480m_clk; |
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struct clk *xclk60mhsp1_ck; struct clk *xclk60mhsp2_ck; |
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struct clk *utmi_p1_gfclk; struct clk *utmi_p2_gfclk; |
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struct clk *init_60m_fclk; |
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struct clk *ehci_logic_fck; |
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void __iomem *uhh_base; |
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|
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struct usbhs_omap_platform_data *pdata; |
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u32 usbhs_rev; |
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}; /*-------------------------------------------------------------------------*/ |
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static const char usbhs_driver_name[] = USBHS_DRIVER_NAME; |
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static u64 usbhs_dmamask = DMA_BIT_MASK(32); |
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/*-------------------------------------------------------------------------*/ static inline void usbhs_write(void __iomem *base, u32 reg, u32 val) { |
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writel_relaxed(val, base + reg); |
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} static inline u32 usbhs_read(void __iomem *base, u32 reg) { |
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return readl_relaxed(base + reg); |
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} static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val) { |
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writeb_relaxed(val, base + reg); |
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} static inline u8 usbhs_readb(void __iomem *base, u8 reg) { |
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return readb_relaxed(base + reg); |
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} /*-------------------------------------------------------------------------*/ |
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/** * Map 'enum usbhs_omap_port_mode' found in <linux/platform_data/usb-omap.h> * to the device tree binding portN-mode found in * 'Documentation/devicetree/bindings/mfd/omap-usb-host.txt' */ static const char * const port_modes[] = { [OMAP_USBHS_PORT_MODE_UNUSED] = "", [OMAP_EHCI_PORT_MODE_PHY] = "ehci-phy", [OMAP_EHCI_PORT_MODE_TLL] = "ehci-tll", [OMAP_EHCI_PORT_MODE_HSIC] = "ehci-hsic", [OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0] = "ohci-phy-6pin-datse0", [OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM] = "ohci-phy-6pin-dpdm", [OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0] = "ohci-phy-3pin-datse0", [OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM] = "ohci-phy-4pin-dpdm", [OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0] = "ohci-tll-6pin-datse0", [OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM] = "ohci-tll-6pin-dpdm", [OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0] = "ohci-tll-3pin-datse0", [OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM] = "ohci-tll-4pin-dpdm", [OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0] = "ohci-tll-2pin-datse0", [OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM] = "ohci-tll-2pin-dpdm", }; /** * omap_usbhs_get_dt_port_mode - Get the 'enum usbhs_omap_port_mode' * from the port mode string. * @mode: The port mode string, usually obtained from device tree. * * The function returns the 'enum usbhs_omap_port_mode' that matches the * provided port mode string as per the port_modes table. * If no match is found it returns -ENODEV */ static const int omap_usbhs_get_dt_port_mode(const char *mode) { int i; for (i = 0; i < ARRAY_SIZE(port_modes); i++) { if (!strcmp(mode, port_modes[i])) return i; } return -ENODEV; } |
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static struct platform_device *omap_usbhs_alloc_child(const char *name, struct resource *res, int num_resources, void *pdata, size_t pdata_size, struct device *dev) { struct platform_device *child; int ret; child = platform_device_alloc(name, 0); if (!child) { dev_err(dev, "platform_device_alloc %s failed ", name); goto err_end; } ret = platform_device_add_resources(child, res, num_resources); if (ret) { dev_err(dev, "platform_device_add_resources failed "); goto err_alloc; } ret = platform_device_add_data(child, pdata, pdata_size); if (ret) { dev_err(dev, "platform_device_add_data failed "); goto err_alloc; } child->dev.dma_mask = &usbhs_dmamask; |
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dma_set_coherent_mask(&child->dev, DMA_BIT_MASK(32)); |
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child->dev.parent = dev; ret = platform_device_add(child); if (ret) { dev_err(dev, "platform_device_add failed "); goto err_alloc; } return child; err_alloc: platform_device_put(child); err_end: return NULL; } static int omap_usbhs_alloc_children(struct platform_device *pdev) { struct device *dev = &pdev->dev; |
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struct usbhs_omap_platform_data *pdata = dev_get_platdata(dev); |
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struct platform_device *ehci; struct platform_device *ohci; struct resource *res; struct resource resources[2]; int ret; |
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci"); if (!res) { dev_err(dev, "EHCI get resource IORESOURCE_MEM failed "); ret = -ENODEV; goto err_end; } resources[0] = *res; res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ehci-irq"); if (!res) { dev_err(dev, " EHCI get resource IORESOURCE_IRQ failed "); ret = -ENODEV; goto err_end; } resources[1] = *res; |
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ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, pdata, sizeof(*pdata), dev); |
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if (!ehci) { dev_err(dev, "omap_usbhs_alloc_child failed "); |
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ret = -ENOMEM; |
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goto err_end; } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci"); if (!res) { dev_err(dev, "OHCI get resource IORESOURCE_MEM failed "); ret = -ENODEV; goto err_ehci; } resources[0] = *res; res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ohci-irq"); if (!res) { dev_err(dev, "OHCI get resource IORESOURCE_IRQ failed "); ret = -ENODEV; goto err_ehci; } resources[1] = *res; |
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ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, pdata, sizeof(*pdata), dev); |
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if (!ohci) { dev_err(dev, "omap_usbhs_alloc_child failed "); |
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ret = -ENOMEM; |
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goto err_ehci; } return 0; err_ehci: |
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platform_device_unregister(ehci); |
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err_end: return ret; } |
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static bool is_ohci_port(enum usbhs_omap_port_mode pmode) { switch (pmode) { case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: return true; default: return false; } } |
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static int usbhs_runtime_resume(struct device *dev) |
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{ struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); |
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struct usbhs_omap_platform_data *pdata = omap->pdata; |
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int i, r; |
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dev_dbg(dev, "usbhs_runtime_resume "); |
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omap_tll_enable(pdata); |
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if (!IS_ERR(omap->ehci_logic_fck)) |
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clk_prepare_enable(omap->ehci_logic_fck); |
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for (i = 0; i < omap->nports; i++) { |
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switch (pdata->port_mode[i]) { case OMAP_EHCI_PORT_MODE_HSIC: if (!IS_ERR(omap->hsic60m_clk[i])) { |
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r = clk_prepare_enable(omap->hsic60m_clk[i]); |
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if (r) { dev_err(dev, "Can't enable port %d hsic60m clk:%d ", i, r); } } if (!IS_ERR(omap->hsic480m_clk[i])) { |
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r = clk_prepare_enable(omap->hsic480m_clk[i]); |
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if (r) { dev_err(dev, "Can't enable port %d hsic480m clk:%d ", i, r); } } /* Fall through as HSIC mode needs utmi_clk */ case OMAP_EHCI_PORT_MODE_TLL: if (!IS_ERR(omap->utmi_clk[i])) { |
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r = clk_prepare_enable(omap->utmi_clk[i]); |
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if (r) { dev_err(dev, "Can't enable port %d clk : %d ", i, r); } } break; default: break; } |
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} |
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return 0; } static int usbhs_runtime_suspend(struct device *dev) { struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); |
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struct usbhs_omap_platform_data *pdata = omap->pdata; |
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int i; |
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dev_dbg(dev, "usbhs_runtime_suspend "); |
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for (i = 0; i < omap->nports; i++) { |
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switch (pdata->port_mode[i]) { case OMAP_EHCI_PORT_MODE_HSIC: if (!IS_ERR(omap->hsic60m_clk[i])) |
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clk_disable_unprepare(omap->hsic60m_clk[i]); |
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if (!IS_ERR(omap->hsic480m_clk[i])) |
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clk_disable_unprepare(omap->hsic480m_clk[i]); |
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/* Fall through as utmi_clks were used in HSIC mode */ case OMAP_EHCI_PORT_MODE_TLL: if (!IS_ERR(omap->utmi_clk[i])) |
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clk_disable_unprepare(omap->utmi_clk[i]); |
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break; default: break; } |
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} |
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if (!IS_ERR(omap->ehci_logic_fck)) |
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clk_disable_unprepare(omap->ehci_logic_fck); |
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omap_tll_disable(pdata); |
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return 0; } |
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static unsigned omap_usbhs_rev1_hostconfig(struct usbhs_hcd_omap *omap, unsigned reg) { struct usbhs_omap_platform_data *pdata = omap->pdata; int i; for (i = 0; i < omap->nports; i++) { switch (pdata->port_mode[i]) { case OMAP_USBHS_PORT_MODE_UNUSED: reg &= ~(OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS << i); break; case OMAP_EHCI_PORT_MODE_PHY: if (pdata->single_ulpi_bypass) break; if (i == 0) reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; else reg &= ~(OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS << (i-1)); break; default: if (pdata->single_ulpi_bypass) break; if (i == 0) reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; else reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS << (i-1); break; } } if (pdata->single_ulpi_bypass) { /* bypass ULPI only if none of the ports use PHY mode */ reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; for (i = 0; i < omap->nports; i++) { if (is_ehci_phy_mode(pdata->port_mode[i])) { reg &= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; break; } } } return reg; } static unsigned omap_usbhs_rev2_hostconfig(struct usbhs_hcd_omap *omap, unsigned reg) { struct usbhs_omap_platform_data *pdata = omap->pdata; int i; for (i = 0; i < omap->nports; i++) { /* Clear port mode fields for PHY mode */ reg &= ~(OMAP4_P1_MODE_CLEAR << 2 * i); if (is_ehci_tll_mode(pdata->port_mode[i]) || (is_ohci_port(pdata->port_mode[i]))) reg |= OMAP4_P1_MODE_TLL << 2 * i; else if (is_ehci_hsic_mode(pdata->port_mode[i])) reg |= OMAP4_P1_MODE_HSIC << 2 * i; } return reg; } |
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static void omap_usbhs_init(struct device *dev) { struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); |
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unsigned reg; dev_dbg(dev, "starting TI HSUSB Controller "); |
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pm_runtime_get_sync(dev); |
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reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG); /* setup ULPI bypass and burst configurations */ reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN); reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK; reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN; |
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switch (omap->usbhs_rev) { case OMAP_USBHS_REV1: |
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reg = omap_usbhs_rev1_hostconfig(omap, reg); |
c4df00aed mfd: omap-usb-hos... |
497 498 499 |
break; case OMAP_USBHS_REV2: |
26bacba15 mfd: omap-usb-hos... |
500 |
reg = omap_usbhs_rev2_hostconfig(omap, reg); |
c4df00aed mfd: omap-usb-hos... |
501 502 503 |
break; default: /* newer revisions */ |
26bacba15 mfd: omap-usb-hos... |
504 |
reg = omap_usbhs_rev2_hostconfig(omap, reg); |
c4df00aed mfd: omap-usb-hos... |
505 |
break; |
17cdd29d6 usb: host: omap: ... |
506 507 508 509 510 |
} usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg); dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x ", reg); |
760189b36 mfd: omap-usb-hos... |
511 |
pm_runtime_put_sync(dev); |
1e7fe1a92 MFD: OMAP: USB: R... |
512 |
} |
03a8f438f mfd: omap-usb-hos... |
513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 |
static int usbhs_omap_get_dt_pdata(struct device *dev, struct usbhs_omap_platform_data *pdata) { int ret, i; struct device_node *node = dev->of_node; ret = of_property_read_u32(node, "num-ports", &pdata->nports); if (ret) pdata->nports = 0; if (pdata->nports > OMAP3_HS_USB_PORTS) { dev_warn(dev, "Too many num_ports <%d> in device tree. Max %d ", pdata->nports, OMAP3_HS_USB_PORTS); return -ENODEV; } /* get port modes */ for (i = 0; i < OMAP3_HS_USB_PORTS; i++) { char prop[11]; const char *mode; pdata->port_mode[i] = OMAP_USBHS_PORT_MODE_UNUSED; snprintf(prop, sizeof(prop), "port%d-mode", i + 1); ret = of_property_read_string(node, prop, &mode); if (ret < 0) continue; ret = omap_usbhs_get_dt_port_mode(mode); if (ret < 0) { dev_warn(dev, "Invalid port%d-mode \"%s\" in device tree ", i, mode); return -ENODEV; } dev_dbg(dev, "port%d-mode: %s -> %d ", i, mode, ret); pdata->port_mode[i] = ret; } /* get flags */ pdata->single_ulpi_bypass = of_property_read_bool(node, "single-ulpi-bypass"); return 0; } static struct of_device_id usbhs_child_match_table[] = { { .compatible = "ti,omap-ehci", }, { .compatible = "ti,omap-ohci", }, { } }; |
1e7fe1a92 MFD: OMAP: USB: R... |
567 568 569 570 571 |
/** * usbhs_omap_probe - initialize TI-based HCDs * * Allocates basic resources for this USB host controller. */ |
f791be492 mfd: remove use o... |
572 |
static int usbhs_omap_probe(struct platform_device *pdev) |
17cdd29d6 usb: host: omap: ... |
573 |
{ |
1e7fe1a92 MFD: OMAP: USB: R... |
574 |
struct device *dev = &pdev->dev; |
334a41ce9 mfd: Use dev_get_... |
575 |
struct usbhs_omap_platform_data *pdata = dev_get_platdata(dev); |
1e7fe1a92 MFD: OMAP: USB: R... |
576 577 578 579 |
struct usbhs_hcd_omap *omap; struct resource *res; int ret = 0; int i; |
06ba7dc75 mfd: omap-usb-hos... |
580 |
bool need_logic_fck; |
17cdd29d6 usb: host: omap: ... |
581 |
|
03a8f438f mfd: omap-usb-hos... |
582 583 584 585 586 587 588 589 590 591 592 593 |
if (dev->of_node) { /* For DT boot we populate platform data from OF node */ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; ret = usbhs_omap_get_dt_pdata(dev, pdata); if (ret) return ret; dev->platform_data = pdata; } |
1e7fe1a92 MFD: OMAP: USB: R... |
594 595 596 |
if (!pdata) { dev_err(dev, "Missing platform data "); |
27d4f2c65 mfd: omap-usb-hos... |
597 |
return -ENODEV; |
1e7fe1a92 MFD: OMAP: USB: R... |
598 |
} |
17cdd29d6 usb: host: omap: ... |
599 |
|
03a8f438f mfd: omap-usb-hos... |
600 601 602 603 604 605 |
if (pdata->nports > OMAP3_HS_USB_PORTS) { dev_info(dev, "Too many num_ports <%d> in platform_data. Max %d ", pdata->nports, OMAP3_HS_USB_PORTS); return -ENODEV; } |
27d4f2c65 mfd: omap-usb-hos... |
606 |
omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL); |
1e7fe1a92 MFD: OMAP: USB: R... |
607 608 609 |
if (!omap) { dev_err(dev, "Memory allocation failed "); |
27d4f2c65 mfd: omap-usb-hos... |
610 611 |
return -ENOMEM; } |
03a8f438f mfd: omap-usb-hos... |
612 |
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
d011c4508 mfd: omap-usb-hos... |
613 614 615 |
omap->uhh_base = devm_ioremap_resource(dev, res); if (IS_ERR(omap->uhh_base)) return PTR_ERR(omap->uhh_base); |
17cdd29d6 usb: host: omap: ... |
616 |
|
9d9c6ae79 mfd: omap-usb-hos... |
617 |
omap->pdata = pdata; |
17cdd29d6 usb: host: omap: ... |
618 |
|
9f4a3ece0 mfd: omap-usb-tll... |
619 620 |
/* Initialize the TLL subsystem */ omap_tll_init(pdata); |
1e7fe1a92 MFD: OMAP: USB: R... |
621 |
pm_runtime_enable(dev); |
17cdd29d6 usb: host: omap: ... |
622 |
|
d7eaf8661 mfd: omap-usb-hos... |
623 624 625 626 627 628 629 630 631 |
platform_set_drvdata(pdev, omap); pm_runtime_get_sync(dev); omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION); /* we need to call runtime suspend before we update omap->nports * to prevent unbalanced clk_disable() */ pm_runtime_put_sync(dev); |
ccac71a7f mfd: omap-usb-hos... |
632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 |
/* * If platform data contains nports then use that * else make out number of ports from USBHS revision */ if (pdata->nports) { omap->nports = pdata->nports; } else { switch (omap->usbhs_rev) { case OMAP_USBHS_REV1: omap->nports = 3; break; case OMAP_USBHS_REV2: omap->nports = 2; break; default: omap->nports = OMAP3_HS_USB_PORTS; dev_dbg(dev, "USB HOST Rev:0x%d not recognized, assuming %d ports ", omap->usbhs_rev, omap->nports); break; } |
662e469e9 mfd: omap-usb-hos... |
654 |
pdata->nports = omap->nports; |
d7eaf8661 mfd: omap-usb-hos... |
655 |
} |
06ba7dc75 mfd: omap-usb-hos... |
656 657 |
i = sizeof(struct clk *) * omap->nports; omap->utmi_clk = devm_kzalloc(dev, i, GFP_KERNEL); |
340c64eab mfd: omap-usb-hos... |
658 659 660 661 |
omap->hsic480m_clk = devm_kzalloc(dev, i, GFP_KERNEL); omap->hsic60m_clk = devm_kzalloc(dev, i, GFP_KERNEL); if (!omap->utmi_clk || !omap->hsic480m_clk || !omap->hsic60m_clk) { |
06ba7dc75 mfd: omap-usb-hos... |
662 663 664 665 666 667 668 669 |
dev_err(dev, "Memory allocation failed "); ret = -ENOMEM; goto err_mem; } need_logic_fck = false; for (i = 0; i < omap->nports; i++) { |
1e7fe1a92 MFD: OMAP: USB: R... |
670 |
if (is_ehci_phy_mode(i) || is_ehci_tll_mode(i) || |
06ba7dc75 mfd: omap-usb-hos... |
671 672 673 674 675 676 677 678 679 680 681 |
is_ehci_hsic_mode(i)) need_logic_fck |= true; } omap->ehci_logic_fck = ERR_PTR(-EINVAL); if (need_logic_fck) { omap->ehci_logic_fck = clk_get(dev, "ehci_logic_fck"); if (IS_ERR(omap->ehci_logic_fck)) { ret = PTR_ERR(omap->ehci_logic_fck); dev_dbg(dev, "ehci_logic_fck failed:%d ", ret); |
1e7fe1a92 MFD: OMAP: USB: R... |
682 |
} |
06ba7dc75 mfd: omap-usb-hos... |
683 |
} |
17cdd29d6 usb: host: omap: ... |
684 |
|
06ba7dc75 mfd: omap-usb-hos... |
685 686 687 688 689 690 691 692 693 694 695 696 697 698 |
omap->utmi_p1_gfclk = clk_get(dev, "utmi_p1_gfclk"); if (IS_ERR(omap->utmi_p1_gfclk)) { ret = PTR_ERR(omap->utmi_p1_gfclk); dev_err(dev, "utmi_p1_gfclk failed error:%d ", ret); goto err_p1_gfclk; } omap->utmi_p2_gfclk = clk_get(dev, "utmi_p2_gfclk"); if (IS_ERR(omap->utmi_p2_gfclk)) { ret = PTR_ERR(omap->utmi_p2_gfclk); dev_err(dev, "utmi_p2_gfclk failed error:%d ", ret); goto err_p2_gfclk; |
17cdd29d6 usb: host: omap: ... |
699 |
} |
1e7fe1a92 MFD: OMAP: USB: R... |
700 701 702 703 704 |
omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck"); if (IS_ERR(omap->xclk60mhsp1_ck)) { ret = PTR_ERR(omap->xclk60mhsp1_ck); dev_err(dev, "xclk60mhsp1_ck failed error:%d ", ret); |
06ba7dc75 mfd: omap-usb-hos... |
705 |
goto err_xclk60mhsp1; |
17cdd29d6 usb: host: omap: ... |
706 |
} |
1e7fe1a92 MFD: OMAP: USB: R... |
707 708 709 710 711 |
omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck"); if (IS_ERR(omap->xclk60mhsp2_ck)) { ret = PTR_ERR(omap->xclk60mhsp2_ck); dev_err(dev, "xclk60mhsp2_ck failed error:%d ", ret); |
06ba7dc75 mfd: omap-usb-hos... |
712 |
goto err_xclk60mhsp2; |
17cdd29d6 usb: host: omap: ... |
713 |
} |
1e7fe1a92 MFD: OMAP: USB: R... |
714 715 716 717 718 |
omap->init_60m_fclk = clk_get(dev, "init_60m_fclk"); if (IS_ERR(omap->init_60m_fclk)) { ret = PTR_ERR(omap->init_60m_fclk); dev_err(dev, "init_60m_fclk failed error:%d ", ret); |
06ba7dc75 mfd: omap-usb-hos... |
719 720 721 722 |
goto err_init60m; } for (i = 0; i < omap->nports; i++) { |
340c64eab mfd: omap-usb-hos... |
723 |
char clkname[30]; |
06ba7dc75 mfd: omap-usb-hos... |
724 725 726 727 728 729 730 731 732 733 734 735 736 737 |
/* clock names are indexed from 1*/ snprintf(clkname, sizeof(clkname), "usb_host_hs_utmi_p%d_clk", i + 1); /* If a clock is not found we won't bail out as not all * platforms have all clocks and we can function without * them */ omap->utmi_clk[i] = clk_get(dev, clkname); if (IS_ERR(omap->utmi_clk[i])) dev_dbg(dev, "Failed to get clock : %s : %ld ", clkname, PTR_ERR(omap->utmi_clk[i])); |
340c64eab mfd: omap-usb-hos... |
738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 |
snprintf(clkname, sizeof(clkname), "usb_host_hs_hsic480m_p%d_clk", i + 1); omap->hsic480m_clk[i] = clk_get(dev, clkname); if (IS_ERR(omap->hsic480m_clk[i])) dev_dbg(dev, "Failed to get clock : %s : %ld ", clkname, PTR_ERR(omap->hsic480m_clk[i])); snprintf(clkname, sizeof(clkname), "usb_host_hs_hsic60m_p%d_clk", i + 1); omap->hsic60m_clk[i] = clk_get(dev, clkname); if (IS_ERR(omap->hsic60m_clk[i])) dev_dbg(dev, "Failed to get clock : %s : %ld ", clkname, PTR_ERR(omap->hsic60m_clk[i])); |
17cdd29d6 usb: host: omap: ... |
754 |
} |
1e7fe1a92 MFD: OMAP: USB: R... |
755 |
if (is_ehci_phy_mode(pdata->port_mode[0])) { |
a8c4e9e11 mfd: omap-usb-hos... |
756 |
/* for OMAP3, clk_set_parent fails */ |
06ba7dc75 mfd: omap-usb-hos... |
757 |
ret = clk_set_parent(omap->utmi_p1_gfclk, |
1e7fe1a92 MFD: OMAP: USB: R... |
758 759 |
omap->xclk60mhsp1_ck); if (ret != 0) |
a8c4e9e11 mfd: omap-usb-hos... |
760 761 762 |
dev_dbg(dev, "xclk60mhsp1_ck set parent failed: %d ", ret); |
1e7fe1a92 MFD: OMAP: USB: R... |
763 |
} else if (is_ehci_tll_mode(pdata->port_mode[0])) { |
06ba7dc75 mfd: omap-usb-hos... |
764 |
ret = clk_set_parent(omap->utmi_p1_gfclk, |
1e7fe1a92 MFD: OMAP: USB: R... |
765 766 |
omap->init_60m_fclk); if (ret != 0) |
a8c4e9e11 mfd: omap-usb-hos... |
767 768 769 |
dev_dbg(dev, "P0 init_60m_fclk set parent failed: %d ", ret); |
1e7fe1a92 MFD: OMAP: USB: R... |
770 |
} |
17cdd29d6 usb: host: omap: ... |
771 |
|
1e7fe1a92 MFD: OMAP: USB: R... |
772 |
if (is_ehci_phy_mode(pdata->port_mode[1])) { |
06ba7dc75 mfd: omap-usb-hos... |
773 |
ret = clk_set_parent(omap->utmi_p2_gfclk, |
1e7fe1a92 MFD: OMAP: USB: R... |
774 775 |
omap->xclk60mhsp2_ck); if (ret != 0) |
a8c4e9e11 mfd: omap-usb-hos... |
776 777 778 |
dev_dbg(dev, "xclk60mhsp2_ck set parent failed: %d ", ret); |
1e7fe1a92 MFD: OMAP: USB: R... |
779 |
} else if (is_ehci_tll_mode(pdata->port_mode[1])) { |
06ba7dc75 mfd: omap-usb-hos... |
780 |
ret = clk_set_parent(omap->utmi_p2_gfclk, |
1e7fe1a92 MFD: OMAP: USB: R... |
781 782 |
omap->init_60m_fclk); if (ret != 0) |
a8c4e9e11 mfd: omap-usb-hos... |
783 784 785 |
dev_dbg(dev, "P1 init_60m_fclk set parent failed: %d ", ret); |
1e7fe1a92 MFD: OMAP: USB: R... |
786 |
} |
6eb6fbbf3 mfd: Fix omap usb... |
787 |
|
f0447a690 mfd: Move omap-us... |
788 |
omap_usbhs_init(dev); |
03a8f438f mfd: omap-usb-hos... |
789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 |
if (dev->of_node) { ret = of_platform_populate(dev->of_node, usbhs_child_match_table, NULL, dev); if (ret) { dev_err(dev, "Failed to create DT children: %d ", ret); goto err_alloc; } } else { ret = omap_usbhs_alloc_children(pdev); if (ret) { dev_err(dev, "omap_usbhs_alloc_children failed: %d ", ret); goto err_alloc; } |
1e7fe1a92 MFD: OMAP: USB: R... |
808 |
} |
27d4f2c65 mfd: omap-usb-hos... |
809 |
return 0; |
1e7fe1a92 MFD: OMAP: USB: R... |
810 811 |
err_alloc: |
340c64eab mfd: omap-usb-hos... |
812 |
for (i = 0; i < omap->nports; i++) { |
06ba7dc75 mfd: omap-usb-hos... |
813 814 |
if (!IS_ERR(omap->utmi_clk[i])) clk_put(omap->utmi_clk[i]); |
340c64eab mfd: omap-usb-hos... |
815 816 817 818 819 |
if (!IS_ERR(omap->hsic60m_clk[i])) clk_put(omap->hsic60m_clk[i]); if (!IS_ERR(omap->hsic480m_clk[i])) clk_put(omap->hsic480m_clk[i]); } |
1e7fe1a92 MFD: OMAP: USB: R... |
820 |
|
06ba7dc75 mfd: omap-usb-hos... |
821 |
clk_put(omap->init_60m_fclk); |
1e7fe1a92 MFD: OMAP: USB: R... |
822 |
|
06ba7dc75 mfd: omap-usb-hos... |
823 |
err_init60m: |
1e7fe1a92 MFD: OMAP: USB: R... |
824 |
clk_put(omap->xclk60mhsp2_ck); |
06ba7dc75 mfd: omap-usb-hos... |
825 |
err_xclk60mhsp2: |
1e7fe1a92 MFD: OMAP: USB: R... |
826 |
clk_put(omap->xclk60mhsp1_ck); |
06ba7dc75 mfd: omap-usb-hos... |
827 828 |
err_xclk60mhsp1: clk_put(omap->utmi_p2_gfclk); |
1e7fe1a92 MFD: OMAP: USB: R... |
829 |
|
06ba7dc75 mfd: omap-usb-hos... |
830 831 832 833 834 835 836 837 |
err_p2_gfclk: clk_put(omap->utmi_p1_gfclk); err_p1_gfclk: if (!IS_ERR(omap->ehci_logic_fck)) clk_put(omap->ehci_logic_fck); err_mem: |
1e7fe1a92 MFD: OMAP: USB: R... |
838 |
pm_runtime_disable(dev); |
1e7fe1a92 MFD: OMAP: USB: R... |
839 |
|
1e7fe1a92 MFD: OMAP: USB: R... |
840 |
return ret; |
17cdd29d6 usb: host: omap: ... |
841 |
} |
17cdd29d6 usb: host: omap: ... |
842 |
|
03a8f438f mfd: omap-usb-hos... |
843 844 845 846 847 848 849 |
static int usbhs_omap_remove_child(struct device *dev, void *data) { dev_info(dev, "unregistering "); platform_device_unregister(to_platform_device(dev)); return 0; } |
1e7fe1a92 MFD: OMAP: USB: R... |
850 851 852 853 854 855 |
/** * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs * @pdev: USB Host Controller being removed * * Reverses the effect of usbhs_omap_probe(). */ |
4740f73fe mfd: remove use o... |
856 |
static int usbhs_omap_remove(struct platform_device *pdev) |
17cdd29d6 usb: host: omap: ... |
857 |
{ |
1e7fe1a92 MFD: OMAP: USB: R... |
858 |
struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev); |
06ba7dc75 mfd: omap-usb-hos... |
859 |
int i; |
1e7fe1a92 MFD: OMAP: USB: R... |
860 |
|
340c64eab mfd: omap-usb-hos... |
861 |
for (i = 0; i < omap->nports; i++) { |
06ba7dc75 mfd: omap-usb-hos... |
862 863 |
if (!IS_ERR(omap->utmi_clk[i])) clk_put(omap->utmi_clk[i]); |
340c64eab mfd: omap-usb-hos... |
864 865 866 867 868 |
if (!IS_ERR(omap->hsic60m_clk[i])) clk_put(omap->hsic60m_clk[i]); if (!IS_ERR(omap->hsic480m_clk[i])) clk_put(omap->hsic480m_clk[i]); } |
06ba7dc75 mfd: omap-usb-hos... |
869 |
|
1e7fe1a92 MFD: OMAP: USB: R... |
870 |
clk_put(omap->init_60m_fclk); |
06ba7dc75 mfd: omap-usb-hos... |
871 872 |
clk_put(omap->utmi_p1_gfclk); clk_put(omap->utmi_p2_gfclk); |
1e7fe1a92 MFD: OMAP: USB: R... |
873 |
clk_put(omap->xclk60mhsp2_ck); |
1e7fe1a92 MFD: OMAP: USB: R... |
874 |
clk_put(omap->xclk60mhsp1_ck); |
06ba7dc75 mfd: omap-usb-hos... |
875 876 877 |
if (!IS_ERR(omap->ehci_logic_fck)) clk_put(omap->ehci_logic_fck); |
1e7fe1a92 MFD: OMAP: USB: R... |
878 |
pm_runtime_disable(&pdev->dev); |
1e7fe1a92 MFD: OMAP: USB: R... |
879 |
|
03a8f438f mfd: omap-usb-hos... |
880 881 |
/* remove children */ device_for_each_child(&pdev->dev, NULL, usbhs_omap_remove_child); |
1e7fe1a92 MFD: OMAP: USB: R... |
882 |
return 0; |
17cdd29d6 usb: host: omap: ... |
883 |
} |
1e7fe1a92 MFD: OMAP: USB: R... |
884 885 886 887 888 |
static const struct dev_pm_ops usbhsomap_dev_pm_ops = { .runtime_suspend = usbhs_runtime_suspend, .runtime_resume = usbhs_runtime_resume, }; |
17cdd29d6 usb: host: omap: ... |
889 |
|
03a8f438f mfd: omap-usb-hos... |
890 891 892 893 894 895 |
static const struct of_device_id usbhs_omap_dt_ids[] = { { .compatible = "ti,usbhs-host" }, { } }; MODULE_DEVICE_TABLE(of, usbhs_omap_dt_ids); |
17cdd29d6 usb: host: omap: ... |
896 897 898 899 |
static struct platform_driver usbhs_omap_driver = { .driver = { .name = (char *)usbhs_driver_name, .owner = THIS_MODULE, |
1e7fe1a92 MFD: OMAP: USB: R... |
900 |
.pm = &usbhsomap_dev_pm_ops, |
0f54e1e12 mfd: omap-usb: Re... |
901 |
.of_match_table = usbhs_omap_dt_ids, |
17cdd29d6 usb: host: omap: ... |
902 |
}, |
ab3f2a86d mfd: omap-usb-hos... |
903 |
.remove = usbhs_omap_remove, |
17cdd29d6 usb: host: omap: ... |
904 905 906 |
}; MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>"); |
03a8f438f mfd: omap-usb-hos... |
907 |
MODULE_AUTHOR("Roger Quadros <rogerq@ti.com>"); |
17cdd29d6 usb: host: omap: ... |
908 909 910 911 912 913 914 915 916 917 918 919 920 |
MODULE_ALIAS("platform:" USBHS_DRIVER_NAME); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI"); static int __init omap_usbhs_drvinit(void) { return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe); } /* * init before ehci and ohci drivers; * The usbhs core driver should be initialized much before * the omap ehci and ohci probe functions are called. |
4dc2cceb5 mfd: omap-usb-hos... |
921 922 |
* This usbhs core driver should be initialized after * usb tll driver |
17cdd29d6 usb: host: omap: ... |
923 |
*/ |
4dc2cceb5 mfd: omap-usb-hos... |
924 |
fs_initcall_sync(omap_usbhs_drvinit); |
17cdd29d6 usb: host: omap: ... |
925 926 927 928 929 930 |
static void __exit omap_usbhs_drvexit(void) { platform_driver_unregister(&usbhs_omap_driver); } module_exit(omap_usbhs_drvexit); |