diff options
Diffstat (limited to 'drivers/mfd/omap-usb-host.c')
| -rw-r--r-- | drivers/mfd/omap-usb-host.c | 1061 |
1 files changed, 1061 insertions, 0 deletions
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c new file mode 100644 index 0000000..cb01209 --- /dev/null +++ b/drivers/mfd/omap-usb-host.c @@ -0,0 +1,1061 @@ +/** + * omap-usb-host.c - The USBHS core driver for OMAP EHCI & OHCI + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com + * Author: Keshava Munegowda <keshava_mgowda@ti.com> + * + * 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> +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/dma-mapping.h> +#include <linux/spinlock.h> +#include <linux/gpio.h> +#include <linux/regulator/consumer.h> +#include <plat/usb.h> + +#define USBHS_DRIVER_NAME "usbhs-omap" +#define OMAP_EHCI_DEVICE "ehci-omap" +#define OMAP_OHCI_DEVICE "ohci-omap3" + +/* OMAP USBHOST Register addresses */ + +/* TLL Register Set */ +#define OMAP_USBTLL_REVISION (0x00) +#define OMAP_USBTLL_SYSCONFIG (0x10) +#define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8) +#define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3) +#define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2) +#define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1) +#define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0) + +#define OMAP_USBTLL_SYSSTATUS (0x14) +#define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0) + +#define OMAP_USBTLL_IRQSTATUS (0x18) +#define OMAP_USBTLL_IRQENABLE (0x1C) + +#define OMAP_TLL_SHARED_CONF (0x30) +#define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6) +#define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5) +#define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2) +#define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1) +#define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0) + +#define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num) +#define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24 +#define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11) +#define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10) +#define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9) +#define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8) +#define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1) +#define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0) + +#define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0 0x0 +#define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM 0x1 +#define OMAP_TLL_FSLSMODE_3PIN_PHY 0x2 +#define OMAP_TLL_FSLSMODE_4PIN_PHY 0x3 +#define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0 0x4 +#define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM 0x5 +#define OMAP_TLL_FSLSMODE_3PIN_TLL 0x6 +#define OMAP_TLL_FSLSMODE_4PIN_TLL 0x7 +#define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0 0xA +#define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM 0xB + +#define OMAP_TLL_ULPI_FUNCTION_CTRL(num) (0x804 + 0x100 * num) +#define OMAP_TLL_ULPI_INTERFACE_CTRL(num) (0x807 + 0x100 * num) +#define OMAP_TLL_ULPI_OTG_CTRL(num) (0x80A + 0x100 * num) +#define OMAP_TLL_ULPI_INT_EN_RISE(num) (0x80D + 0x100 * num) +#define OMAP_TLL_ULPI_INT_EN_FALL(num) (0x810 + 0x100 * num) +#define OMAP_TLL_ULPI_INT_STATUS(num) (0x813 + 0x100 * num) +#define OMAP_TLL_ULPI_INT_LATCH(num) (0x814 + 0x100 * num) +#define OMAP_TLL_ULPI_DEBUG(num) (0x815 + 0x100 * num) +#define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) (0x816 + 0x100 * num) + +#define OMAP_TLL_CHANNEL_COUNT 3 +#define OMAP_TLL_CHANNEL_1_EN_MASK (1 << 0) +#define OMAP_TLL_CHANNEL_2_EN_MASK (1 << 1) +#define OMAP_TLL_CHANNEL_3_EN_MASK (1 << 2) + +/* 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) + +#define OMAP_REV2_TLL_CHANNEL_COUNT 2 + +#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 { + struct clk *usbhost_ick; + struct clk *usbhost_hs_fck; + struct clk *usbhost_fs_fck; + struct clk *xclk60mhsp1_ck; + struct clk *xclk60mhsp2_ck; + struct clk *utmi_p1_fck; + struct clk *usbhost_p1_fck; + struct clk *usbtll_p1_fck; + struct clk *utmi_p2_fck; + struct clk *usbhost_p2_fck; + struct clk *usbtll_p2_fck; + struct clk *init_60m_fclk; + struct clk *usbtll_fck; + struct clk *usbtll_ick; + + void __iomem *uhh_base; + void __iomem *tll_base; + + struct usbhs_omap_platform_data platdata; + + u32 usbhs_rev; + spinlock_t lock; + int count; +}; +/*-------------------------------------------------------------------------*/ + +const char usbhs_driver_name[] = USBHS_DRIVER_NAME; +static u64 usbhs_dmamask = ~(u32)0; + +/*-------------------------------------------------------------------------*/ + +static inline void usbhs_write(void __iomem *base, u32 reg, u32 val) +{ + __raw_writel(val, base + reg); +} + +static inline u32 usbhs_read(void __iomem *base, u32 reg) +{ + return __raw_readl(base + reg); +} + +static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val) +{ + __raw_writeb(val, base + reg); +} + +static inline u8 usbhs_readb(void __iomem *base, u8 reg) +{ + return __raw_readb(base + reg); +} + +/*-------------------------------------------------------------------------*/ + +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\n", name); + goto err_end; + } + + ret = platform_device_add_resources(child, res, num_resources); + if (ret) { + dev_err(dev, "platform_device_add_resources failed\n"); + goto err_alloc; + } + + ret = platform_device_add_data(child, pdata, pdata_size); + if (ret) { + dev_err(dev, "platform_device_add_data failed\n"); + goto err_alloc; + } + + child->dev.dma_mask = &usbhs_dmamask; + child->dev.coherent_dma_mask = 0xffffffff; + child->dev.parent = dev; + + ret = platform_device_add(child); + if (ret) { + dev_err(dev, "platform_device_add failed\n"); + 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; + struct usbhs_hcd_omap *omap; + struct ehci_hcd_omap_platform_data *ehci_data; + struct ohci_hcd_omap_platform_data *ohci_data; + struct platform_device *ehci; + struct platform_device *ohci; + struct resource *res; + struct resource resources[2]; + int ret; + + omap = platform_get_drvdata(pdev); + ehci_data = omap->platdata.ehci_data; + ohci_data = omap->platdata.ohci_data; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci"); + if (!res) { + dev_err(dev, "EHCI get resource IORESOURCE_MEM failed\n"); + 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\n"); + ret = -ENODEV; + goto err_end; + } + resources[1] = *res; + + ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data, + sizeof(*ehci_data), dev); + + if (!ehci) { + dev_err(dev, "omap_usbhs_alloc_child failed\n"); + goto err_end; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci"); + if (!res) { + dev_err(dev, "OHCI get resource IORESOURCE_MEM failed\n"); + 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\n"); + ret = -ENODEV; + goto err_ehci; + } + resources[1] = *res; + + ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data, + sizeof(*ohci_data), dev); + if (!ohci) { + dev_err(dev, "omap_usbhs_alloc_child failed\n"); + goto err_ehci; + } + + return 0; + +err_ehci: + platform_device_put(ehci); + +err_end: + return ret; +} + +/** + * usbhs_omap_probe - initialize TI-based HCDs + * + * Allocates basic resources for this USB host controller. + */ +static int __devinit usbhs_omap_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct usbhs_omap_platform_data *pdata = dev->platform_data; + struct usbhs_hcd_omap *omap; + struct resource *res; + int ret = 0; + int i; + + if (!pdata) { + dev_err(dev, "Missing platfrom data\n"); + ret = -ENOMEM; + goto end_probe; + } + + omap = kzalloc(sizeof(*omap), GFP_KERNEL); + if (!omap) { + dev_err(dev, "Memory allocation failed\n"); + ret = -ENOMEM; + goto end_probe; + } + + spin_lock_init(&omap->lock); + + for (i = 0; i < OMAP3_HS_USB_PORTS; i++) + omap->platdata.port_mode[i] = pdata->port_mode[i]; + + omap->platdata.ehci_data = pdata->ehci_data; + omap->platdata.ohci_data = pdata->ohci_data; + + omap->usbhost_ick = clk_get(dev, "usbhost_ick"); + if (IS_ERR(omap->usbhost_ick)) { + ret = PTR_ERR(omap->usbhost_ick); + dev_err(dev, "usbhost_ick failed error:%d\n", ret); + goto err_end; + } + + omap->usbhost_hs_fck = clk_get(dev, "hs_fck"); + if (IS_ERR(omap->usbhost_hs_fck)) { + ret = PTR_ERR(omap->usbhost_hs_fck); + dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret); + goto err_usbhost_ick; + } + + omap->usbhost_fs_fck = clk_get(dev, "fs_fck"); + if (IS_ERR(omap->usbhost_fs_fck)) { + ret = PTR_ERR(omap->usbhost_fs_fck); + dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret); + goto err_usbhost_hs_fck; + } + + omap->usbtll_fck = clk_get(dev, "usbtll_fck"); + if (IS_ERR(omap->usbtll_fck)) { + ret = PTR_ERR(omap->usbtll_fck); + dev_err(dev, "usbtll_fck failed error:%d\n", ret); + goto err_usbhost_fs_fck; + } + + omap->usbtll_ick = clk_get(dev, "usbtll_ick"); + if (IS_ERR(omap->usbtll_ick)) { + ret = PTR_ERR(omap->usbtll_ick); + dev_err(dev, "usbtll_ick failed error:%d\n", ret); + goto err_usbtll_fck; + } + + omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk"); + if (IS_ERR(omap->utmi_p1_fck)) { + ret = PTR_ERR(omap->utmi_p1_fck); + dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret); + goto err_usbtll_ick; + } + + 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\n", ret); + goto err_utmi_p1_fck; + } + + omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk"); + if (IS_ERR(omap->utmi_p2_fck)) { + ret = PTR_ERR(omap->utmi_p2_fck); + dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret); + goto err_xclk60mhsp1_ck; + } + + 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\n", ret); + goto err_utmi_p2_fck; + } + + omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk"); + if (IS_ERR(omap->usbhost_p1_fck)) { + ret = PTR_ERR(omap->usbhost_p1_fck); + dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret); + goto err_xclk60mhsp2_ck; + } + + omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk"); + if (IS_ERR(omap->usbtll_p1_fck)) { + ret = PTR_ERR(omap->usbtll_p1_fck); + dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret); + goto err_usbhost_p1_fck; + } + + omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk"); + if (IS_ERR(omap->usbhost_p2_fck)) { + ret = PTR_ERR(omap->usbhost_p2_fck); + dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret); + goto err_usbtll_p1_fck; + } + + omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk"); + if (IS_ERR(omap->usbtll_p2_fck)) { + ret = PTR_ERR(omap->usbtll_p2_fck); + dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret); + goto err_usbhost_p2_fck; + } + + 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\n", ret); + goto err_usbtll_p2_fck; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh"); + if (!res) { + dev_err(dev, "UHH EHCI get resource failed\n"); + ret = -ENODEV; + goto err_init_60m_fclk; + } + + omap->uhh_base = ioremap(res->start, resource_size(res)); + if (!omap->uhh_base) { + dev_err(dev, "UHH ioremap failed\n"); + ret = -ENOMEM; + goto err_init_60m_fclk; + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll"); + if (!res) { + dev_err(dev, "UHH EHCI get resource failed\n"); + ret = -ENODEV; + goto err_tll; + } + + omap->tll_base = ioremap(res->start, resource_size(res)); + if (!omap->tll_base) { + dev_err(dev, "TLL ioremap failed\n"); + ret = -ENOMEM; + goto err_tll; + } + + platform_set_drvdata(pdev, omap); + + ret = omap_usbhs_alloc_children(pdev); + if (ret) { + dev_err(dev, "omap_usbhs_alloc_children failed\n"); + goto err_alloc; + } + + goto end_probe; + +err_alloc: + iounmap(omap->tll_base); + +err_tll: + iounmap(omap->uhh_base); + +err_init_60m_fclk: + clk_put(omap->init_60m_fclk); + +err_usbtll_p2_fck: + clk_put(omap->usbtll_p2_fck); + +err_usbhost_p2_fck: + clk_put(omap->usbhost_p2_fck); + +err_usbtll_p1_fck: + clk_put(omap->usbtll_p1_fck); + +err_usbhost_p1_fck: + clk_put(omap->usbhost_p1_fck); + +err_xclk60mhsp2_ck: + clk_put(omap->xclk60mhsp2_ck); + +err_utmi_p2_fck: + clk_put(omap->utmi_p2_fck); + +err_xclk60mhsp1_ck: + clk_put(omap->xclk60mhsp1_ck); + +err_utmi_p1_fck: + clk_put(omap->utmi_p1_fck); + +err_usbtll_ick: + clk_put(omap->usbtll_ick); + +err_usbtll_fck: + clk_put(omap->usbtll_fck); + +err_usbhost_fs_fck: + clk_put(omap->usbhost_fs_fck); + +err_usbhost_hs_fck: + clk_put(omap->usbhost_hs_fck); + +err_usbhost_ick: + clk_put(omap->usbhost_ick); + +err_end: + kfree(omap); + +end_probe: + return ret; +} + +/** + * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs + * @pdev: USB Host Controller being removed + * + * Reverses the effect of usbhs_omap_probe(). + */ +static int __devexit usbhs_omap_remove(struct platform_device *pdev) +{ + struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev); + + if (omap->count != 0) { + dev_err(&pdev->dev, + "Either EHCI or OHCI is still using usbhs core\n"); + return -EBUSY; + } + + iounmap(omap->tll_base); + iounmap(omap->uhh_base); + clk_put(omap->init_60m_fclk); + clk_put(omap->usbtll_p2_fck); + clk_put(omap->usbhost_p2_fck); + clk_put(omap->usbtll_p1_fck); + clk_put(omap->usbhost_p1_fck); + clk_put(omap->xclk60mhsp2_ck); + clk_put(omap->utmi_p2_fck); + clk_put(omap->xclk60mhsp1_ck); + clk_put(omap->utmi_p1_fck); + clk_put(omap->usbtll_ick); + clk_put(omap->usbtll_fck); + clk_put(omap->usbhost_fs_fck); + clk_put(omap->usbhost_hs_fck); + clk_put(omap->usbhost_ick); + kfree(omap); + + return 0; +} + +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; + } +} + +/* + * convert the port-mode enum to a value we can use in the FSLSMODE + * field of USBTLL_CHANNEL_CONF + */ +static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode) +{ + switch (mode) { + case OMAP_USBHS_PORT_MODE_UNUSED: + case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0: + return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0; + + case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM: + return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM; + + case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0: + return OMAP_TLL_FSLSMODE_3PIN_PHY; + + case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM: + return OMAP_TLL_FSLSMODE_4PIN_PHY; + + case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0: + return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0; + + case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM: + return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM; + + case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0: + return OMAP_TLL_FSLSMODE_3PIN_TLL; + + case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM: + return OMAP_TLL_FSLSMODE_4PIN_TLL; + + case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0: + return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0; + + case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM: + return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM; + default: + pr_warning("Invalid port mode, using default\n"); + return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0; + } +} + +static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count) +{ + struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); + struct usbhs_omap_platform_data *pdata = dev->platform_data; + unsigned reg; + int i; + + /* Program Common TLL register */ + reg = usbhs_read(omap->tll_base, OMAP_TLL_SHARED_CONF); + reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON + | OMAP_TLL_SHARED_CONF_USB_DIVRATION); + reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN; + reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN; + + usbhs_write(omap->tll_base, OMAP_TLL_SHARED_CONF, reg); + + /* Enable channels now */ + for (i = 0; i < tll_channel_count; i++) { + reg = usbhs_read(omap->tll_base, + OMAP_TLL_CHANNEL_CONF(i)); + + if (is_ohci_port(pdata->port_mode[i])) { + reg |= ohci_omap3_fslsmode(pdata->port_mode[i]) + << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT; + reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS; + } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_TLL) { + + /* Disable AutoIdle, BitStuffing and use SDR Mode */ + reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE + | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF + | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE); + + reg |= (1 << (i + 1)); + } else + continue; + + reg |= OMAP_TLL_CHANNEL_CONF_CHANEN; + usbhs_write(omap->tll_base, + OMAP_TLL_CHANNEL_CONF(i), reg); + + usbhs_writeb(omap->tll_base, + OMAP_TLL_ULPI_SCRATCH_REGISTER(i), 0xbe); + } +} + +static int usbhs_enable(struct device *dev) +{ + struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); + struct usbhs_omap_platform_data *pdata = &omap->platdata; + unsigned long flags = 0; + int ret = 0; + unsigned long timeout; + unsigned reg; + + dev_dbg(dev, "starting TI HSUSB Controller\n"); + if (!pdata) { + dev_dbg(dev, "missing platform_data\n"); + ret = -ENODEV; + goto end_enable; + } + + spin_lock_irqsave(&omap->lock, flags); + if (omap->count > 0) + goto end_count; + + clk_enable(omap->usbhost_ick); + clk_enable(omap->usbhost_hs_fck); + clk_enable(omap->usbhost_fs_fck); + clk_enable(omap->usbtll_fck); + clk_enable(omap->usbtll_ick); + + if (pdata->ehci_data->phy_reset) { + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) { + gpio_request(pdata->ehci_data->reset_gpio_port[0], + "USB1 PHY reset"); + gpio_direction_output + (pdata->ehci_data->reset_gpio_port[0], 1); + } + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) { + gpio_request(pdata->ehci_data->reset_gpio_port[1], + "USB2 PHY reset"); + gpio_direction_output + (pdata->ehci_data->reset_gpio_port[1], 1); + } + + /* Hold the PHY in RESET for enough time till DIR is high */ + udelay(10); + } + + omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION); + dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev); + + /* perform TLL soft reset, and wait until reset is complete */ + usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, + OMAP_USBTLL_SYSCONFIG_SOFTRESET); + + /* Wait for TLL reset to complete */ + timeout = jiffies + msecs_to_jiffies(1000); + while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS) + & OMAP_USBTLL_SYSSTATUS_RESETDONE)) { + cpu_relax(); + + if (time_after(jiffies, timeout)) { + dev_dbg(dev, "operation timed out\n"); + ret = -EINVAL; + goto err_tll; + } + } + + dev_dbg(dev, "TLL RESET DONE\n"); + + /* (1<<3) = no idle mode only for initial debugging */ + usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, + OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | + OMAP_USBTLL_SYSCONFIG_SIDLEMODE | + OMAP_USBTLL_SYSCONFIG_AUTOIDLE); + + /* Put UHH in NoIdle/NoStandby mode */ + reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG); + if (is_omap_usbhs_rev1(omap)) { + reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP + | OMAP_UHH_SYSCONFIG_SIDLEMODE + | OMAP_UHH_SYSCONFIG_CACTIVITY + | OMAP_UHH_SYSCONFIG_MIDLEMODE); + reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE; + + + } else if (is_omap_usbhs_rev2(omap)) { + reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR; + reg |= OMAP4_UHH_SYSCONFIG_NOIDLE; + reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR; + reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY; + } + + usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg); + + 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; + + if (is_omap_usbhs_rev1(omap)) { + if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS; + if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS; + if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED) + reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS; + + /* Bypass the TLL module for PHY mode operation */ + if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) { + dev_dbg(dev, "OMAP3 ES version <= ES2.1\n"); + if (is_ehci_phy_mode(pdata->port_mode[0]) || + is_ehci_phy_mode(pdata->port_mode[1]) || + is_ehci_phy_mode(pdata->port_mode[2])) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS; + } else { + dev_dbg(dev, "OMAP3 ES version > ES2.1\n"); + if (is_ehci_phy_mode(pdata->port_mode[0])) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS; + if (is_ehci_phy_mode(pdata->port_mode[1])) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS; + if (is_ehci_phy_mode(pdata->port_mode[2])) + reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; + else + reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS; + } + } else if (is_omap_usbhs_rev2(omap)) { + /* Clear port mode fields for PHY mode*/ + reg &= ~OMAP4_P1_MODE_CLEAR; + reg &= ~OMAP4_P2_MODE_CLEAR; + + if (is_ehci_phy_mode(pdata->port_mode[0])) { + ret = clk_set_parent(omap->utmi_p1_fck, + omap->xclk60mhsp1_ck); + if (ret != 0) { + dev_err(dev, "xclk60mhsp1_ck set parent" + "failed error:%d\n", ret); + goto err_tll; + } + } else if (is_ehci_tll_mode(pdata->port_mode[0])) { + ret = clk_set_parent(omap->utmi_p1_fck, + omap->init_60m_fclk); + if (ret != 0) { + dev_err(dev, "init_60m_fclk set parent" + "failed error:%d\n", ret); + goto err_tll; + } + clk_enable(omap->usbhost_p1_fck); + clk_enable(omap->usbtll_p1_fck); + } + + if (is_ehci_phy_mode(pdata->port_mode[1])) { + ret = clk_set_parent(omap->utmi_p2_fck, + omap->xclk60mhsp2_ck); + if (ret != 0) { + dev_err(dev, "xclk60mhsp1_ck set parent" + "failed error:%d\n", ret); + goto err_tll; + } + } else if (is_ehci_tll_mode(pdata->port_mode[1])) { + ret = clk_set_parent(omap->utmi_p2_fck, + omap->init_60m_fclk); + if (ret != 0) { + dev_err(dev, "init_60m_fclk set parent" + "failed error:%d\n", ret); + goto err_tll; + } + clk_enable(omap->usbhost_p2_fck); + clk_enable(omap->usbtll_p2_fck); + } + + clk_enable(omap->utmi_p1_fck); + clk_enable(omap->utmi_p2_fck); + + if (is_ehci_tll_mode(pdata->port_mode[0]) || + (is_ohci_port(pdata->port_mode[0]))) + reg |= OMAP4_P1_MODE_TLL; + else if (is_ehci_hsic_mode(pdata->port_mode[0])) + reg |= OMAP4_P1_MODE_HSIC; + + if (is_ehci_tll_mode(pdata->port_mode[1]) || + (is_ohci_port(pdata->port_mode[1]))) + reg |= OMAP4_P2_MODE_TLL; + else if (is_ehci_hsic_mode(pdata->port_mode[1])) + reg |= OMAP4_P2_MODE_HSIC; + } + + usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg); + dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg); + + if (is_ehci_tll_mode(pdata->port_mode[0]) || + is_ehci_tll_mode(pdata->port_mode[1]) || + is_ehci_tll_mode(pdata->port_mode[2]) || + (is_ohci_port(pdata->port_mode[0])) || + (is_ohci_port(pdata->port_mode[1])) || + (is_ohci_port(pdata->port_mode[2]))) { + + /* Enable UTMI mode for required TLL channels */ + if (is_omap_usbhs_rev2(omap)) + usbhs_omap_tll_init(dev, OMAP_REV2_TLL_CHANNEL_COUNT); + else + usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT); + } + + if (pdata->ehci_data->phy_reset) { + /* Hold the PHY in RESET for enough time till + * PHY is settled and ready + */ + udelay(10); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) + gpio_set_value + (pdata->ehci_data->reset_gpio_port[0], 0); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) + gpio_set_value + (pdata->ehci_data->reset_gpio_port[1], 0); + } + +end_count: + omap->count++; + goto end_enable; + +err_tll: + if (pdata->ehci_data->phy_reset) { + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) + gpio_free(pdata->ehci_data->reset_gpio_port[0]); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) + gpio_free(pdata->ehci_data->reset_gpio_port[1]); + } + + clk_disable(omap->usbtll_ick); + clk_disable(omap->usbtll_fck); + clk_disable(omap->usbhost_fs_fck); + clk_disable(omap->usbhost_hs_fck); + clk_disable(omap->usbhost_ick); + +end_enable: + spin_unlock_irqrestore(&omap->lock, flags); + return ret; +} + +static void usbhs_disable(struct device *dev) +{ + struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); + struct usbhs_omap_platform_data *pdata = &omap->platdata; + unsigned long flags = 0; + unsigned long timeout; + + dev_dbg(dev, "stopping TI HSUSB Controller\n"); + + spin_lock_irqsave(&omap->lock, flags); + + if (omap->count == 0) + goto end_disble; + + omap->count--; + + if (omap->count != 0) + goto end_disble; + + /* Reset OMAP modules for insmod/rmmod to work */ + usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, + is_omap_usbhs_rev2(omap) ? + OMAP4_UHH_SYSCONFIG_SOFTRESET : + OMAP_UHH_SYSCONFIG_SOFTRESET); + + timeout = jiffies + msecs_to_jiffies(100); + while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & (1 << 0))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(dev, "operation timed out\n"); + } + + while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & (1 << 1))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(dev, "operation timed out\n"); + } + + while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS) + & (1 << 2))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(dev, "operation timed out\n"); + } + + usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1)); + + while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS) + & (1 << 0))) { + cpu_relax(); + + if (time_after(jiffies, timeout)) + dev_dbg(dev, "operation timed out\n"); + } + + if (pdata->ehci_data->phy_reset) { + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) + gpio_free(pdata->ehci_data->reset_gpio_port[0]); + + if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) + gpio_free(pdata->ehci_data->reset_gpio_port[1]); + } + + clk_disable(omap->utmi_p2_fck); + clk_disable(omap->utmi_p1_fck); + clk_disable(omap->usbtll_ick); + clk_disable(omap->usbtll_fck); + clk_disable(omap->usbhost_fs_fck); + clk_disable(omap->usbhost_hs_fck); + clk_disable(omap->usbhost_ick); + +end_disble: + spin_unlock_irqrestore(&omap->lock, flags); +} + +int omap_usbhs_enable(struct device *dev) +{ + return usbhs_enable(dev->parent); +} +EXPORT_SYMBOL_GPL(omap_usbhs_enable); + +void omap_usbhs_disable(struct device *dev) +{ + usbhs_disable(dev->parent); +} +EXPORT_SYMBOL_GPL(omap_usbhs_disable); + +static struct platform_driver usbhs_omap_driver = { + .driver = { + .name = (char *)usbhs_driver_name, + .owner = THIS_MODULE, + }, + .remove = __exit_p(usbhs_omap_remove), +}; + +MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>"); +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. + */ +fs_initcall(omap_usbhs_drvinit); + +static void __exit omap_usbhs_drvexit(void) +{ + platform_driver_unregister(&usbhs_omap_driver); +} +module_exit(omap_usbhs_drvexit); |