diff options
| -rw-r--r-- | drivers/usb/gadget/Makefile | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/mv_udc.h | 17 | ||||
| -rw-r--r-- | drivers/usb/gadget/mv_udc_core.c | 158 | ||||
| -rw-r--r-- | drivers/usb/gadget/mv_udc_phy.c | 214 | ||||
| -rw-r--r-- | include/linux/platform_data/mv_usb.h | 50 |
5 files changed, 182 insertions, 259 deletions
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 9ba725af4a08..c36da63009db 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -28,7 +28,7 @@ obj-$(CONFIG_USB_S3C_HSUDC) += s3c-hsudc.o obj-$(CONFIG_USB_LANGWELL) += langwell_udc.o obj-$(CONFIG_USB_EG20T) += pch_udc.o obj-$(CONFIG_USB_PXA_U2O) += mv_udc.o -mv_udc-y := mv_udc_core.o mv_udc_phy.o +mv_udc-y := mv_udc_core.o obj-$(CONFIG_USB_CI13XXX_MSM) += ci13xxx_msm.o obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o diff --git a/drivers/usb/gadget/mv_udc.h b/drivers/usb/gadget/mv_udc.h index 65f1f7c3bd4e..d3d26454b8bb 100644 --- a/drivers/usb/gadget/mv_udc.h +++ b/drivers/usb/gadget/mv_udc.h @@ -1,3 +1,11 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * + * 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. + */ #ifndef __MV_UDC_H #define __MV_UDC_H @@ -201,7 +209,12 @@ struct mv_udc { remote_wakeup:1, softconnected:1, force_fs:1; - struct clk *clk; + + struct mv_usb_platform_data *pdata; + + /* some SOC has mutiple clock sources for USB*/ + unsigned int clknum; + struct clk *clk[0]; }; /* endpoint data structure */ @@ -289,6 +302,4 @@ struct mv_dtd { struct mv_dtd *next_dtd_virt; }; -extern int mv_udc_phy_init(unsigned int base); - #endif diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index 0d0e9e39f8b2..40a25e75cc6a 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -1,3 +1,14 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * Author: Chao Xie <chao.xie@marvell.com> + * Neil Zhang <zhangwm@marvell.com> + * + * 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/module.h> #include <linux/pci.h> #include <linux/dma-mapping.h> @@ -22,6 +33,7 @@ #include <linux/irq.h> #include <linux/platform_device.h> #include <linux/clk.h> +#include <linux/platform_data/mv_usb.h> #include <asm/system.h> #include <asm/unaligned.h> @@ -45,6 +57,8 @@ #define LOOPS_USEC (1 << LOOPS_USEC_SHIFT) #define LOOPS(timeout) ((timeout) >> LOOPS_USEC_SHIFT) +static DECLARE_COMPLETION(release_done); + static const char driver_name[] = "mv_udc"; static const char driver_desc[] = DRIVER_DESC; @@ -987,6 +1001,22 @@ static struct usb_ep_ops mv_ep_ops = { .fifo_flush = mv_ep_fifo_flush, /* flush fifo */ }; +static void udc_clock_enable(struct mv_udc *udc) +{ + unsigned int i; + + for (i = 0; i < udc->clknum; i++) + clk_enable(udc->clk[i]); +} + +static void udc_clock_disable(struct mv_udc *udc) +{ + unsigned int i; + + for (i = 0; i < udc->clknum; i++) + clk_disable(udc->clk[i]); +} + static void udc_stop(struct mv_udc *udc) { u32 tmp; @@ -1877,18 +1907,15 @@ static void gadget_release(struct device *_dev) struct mv_udc *udc = the_controller; complete(udc->done); - kfree(udc); } static int mv_udc_remove(struct platform_device *dev) { struct mv_udc *udc = the_controller; - DECLARE_COMPLETION(done); + int clk_i; usb_del_gadget_udc(&udc->gadget); - udc->done = &done; - /* free memory allocated in probe */ if (udc->dtd_pool) dma_pool_destroy(udc->dtd_pool); @@ -1915,10 +1942,14 @@ static int mv_udc_remove(struct platform_device *dev) kfree(udc->status_req); } + for (clk_i = 0; clk_i <= udc->clknum; clk_i++) + clk_put(udc->clk[clk_i]); + device_unregister(&udc->gadget.dev); /* free dev, wait for the release() finished */ - wait_for_completion(&done); + wait_for_completion(udc->done); + kfree(udc); the_controller = NULL; @@ -1927,33 +1958,46 @@ static int mv_udc_remove(struct platform_device *dev) int mv_udc_probe(struct platform_device *dev) { + struct mv_usb_platform_data *pdata = dev->dev.platform_data; struct mv_udc *udc; int retval = 0; + int clk_i = 0; struct resource *r; size_t size; - udc = kzalloc(sizeof *udc, GFP_KERNEL); + if (pdata == NULL) { + dev_err(&dev->dev, "missing platform_data\n"); + return -ENODEV; + } + + size = sizeof(*udc) + sizeof(struct clk *) * pdata->clknum; + udc = kzalloc(size, GFP_KERNEL); if (udc == NULL) { dev_err(&dev->dev, "failed to allocate memory for udc\n"); - retval = -ENOMEM; - goto error; + return -ENOMEM; } + the_controller = udc; + udc->done = &release_done; + udc->pdata = dev->dev.platform_data; spin_lock_init(&udc->lock); udc->dev = dev; - udc->clk = clk_get(&dev->dev, "U2OCLK"); - if (IS_ERR(udc->clk)) { - retval = PTR_ERR(udc->clk); - goto error; + udc->clknum = pdata->clknum; + for (clk_i = 0; clk_i < udc->clknum; clk_i++) { + udc->clk[clk_i] = clk_get(&dev->dev, pdata->clkname[clk_i]); + if (IS_ERR(udc->clk[clk_i])) { + retval = PTR_ERR(udc->clk[clk_i]); + goto err_put_clk; + } } - r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "u2o"); + r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "capregs"); if (r == NULL) { dev_err(&dev->dev, "no I/O memory resource defined\n"); retval = -ENODEV; - goto error; + goto err_put_clk; } udc->cap_regs = (struct mv_cap_regs __iomem *) @@ -1961,29 +2005,31 @@ int mv_udc_probe(struct platform_device *dev) if (udc->cap_regs == NULL) { dev_err(&dev->dev, "failed to map I/O memory\n"); retval = -EBUSY; - goto error; + goto err_put_clk; } - r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "u2ophy"); + r = platform_get_resource_byname(udc->dev, IORESOURCE_MEM, "phyregs"); if (r == NULL) { dev_err(&dev->dev, "no phy I/O memory resource defined\n"); retval = -ENODEV; - goto error; + goto err_iounmap_capreg; } udc->phy_regs = (unsigned int)ioremap(r->start, resource_size(r)); if (udc->phy_regs == 0) { dev_err(&dev->dev, "failed to map phy I/O memory\n"); retval = -EBUSY; - goto error; + goto err_iounmap_capreg; } /* we will acces controller register, so enable the clk */ - clk_enable(udc->clk); - retval = mv_udc_phy_init(udc->phy_regs); - if (retval) { - dev_err(&dev->dev, "phy initialization error %d\n", retval); - goto error; + udc_clock_enable(udc); + if (pdata->phy_init) { + retval = pdata->phy_init(udc->phy_regs); + if (retval) { + dev_err(&dev->dev, "phy init error %d\n", retval); + goto err_iounmap_phyreg; + } } udc->op_regs = (struct mv_op_regs __iomem *)((u32)udc->cap_regs @@ -1999,7 +2045,7 @@ int mv_udc_probe(struct platform_device *dev) if (udc->ep_dqh == NULL) { dev_err(&dev->dev, "allocate dQH memory failed\n"); retval = -ENOMEM; - goto error; + goto err_disable_clock; } udc->ep_dqh_size = size; @@ -2012,7 +2058,7 @@ int mv_udc_probe(struct platform_device *dev) if (!udc->dtd_pool) { retval = -ENOMEM; - goto error; + goto err_free_dma; } size = udc->max_eps * sizeof(struct mv_ep) *2; @@ -2020,7 +2066,7 @@ int mv_udc_probe(struct platform_device *dev) if (udc->eps == NULL) { dev_err(&dev->dev, "allocate ep memory failed\n"); retval = -ENOMEM; - goto error; + goto err_destroy_dma; } /* initialize ep0 status request structure */ @@ -2028,7 +2074,7 @@ int mv_udc_probe(struct platform_device *dev) if (!udc->status_req) { dev_err(&dev->dev, "allocate status_req memory failed\n"); retval = -ENOMEM; - goto error; + goto err_free_eps; } INIT_LIST_HEAD(&udc->status_req->queue); @@ -2045,7 +2091,7 @@ int mv_udc_probe(struct platform_device *dev) if (r == NULL) { dev_err(&dev->dev, "no IRQ resource defined\n"); retval = -ENODEV; - goto error; + goto err_free_status_req; } udc->irq = r->start; if (request_irq(udc->irq, mv_udc_irq, @@ -2053,7 +2099,7 @@ int mv_udc_probe(struct platform_device *dev) dev_err(&dev->dev, "Request irq %d for UDC failed\n", udc->irq); retval = -ENODEV; - goto error; + goto err_free_status_req; } /* initialize gadget structure */ @@ -2072,18 +2118,43 @@ int mv_udc_probe(struct platform_device *dev) retval = device_register(&udc->gadget.dev); if (retval) - goto error; + goto err_free_irq; eps_init(udc); - the_controller = udc; - retval = usb_add_gadget_udc(&dev->dev, &udc->gadget); - if (!retval) - return retval; -error: - if (udc) - mv_udc_remove(udc->dev); + if (retval) + goto err_unregister; + + return 0; + +err_unregister: + device_unregister(&udc->gadget.dev); +err_free_irq: + free_irq(udc->irq, &dev->dev); +err_free_status_req: + kfree(udc->status_req->req.buf); + kfree(udc->status_req); +err_free_eps: + kfree(udc->eps); +err_destroy_dma: + dma_pool_destroy(udc->dtd_pool); +err_free_dma: + dma_free_coherent(&dev->dev, udc->ep_dqh_size, + udc->ep_dqh, udc->ep_dqh_dma); +err_disable_clock: + if (udc->pdata->phy_deinit) + udc->pdata->phy_deinit(udc->phy_regs); + udc_clock_disable(udc); +err_iounmap_phyreg: + iounmap((void *)udc->phy_regs); +err_iounmap_capreg: + iounmap(udc->cap_regs); +err_put_clk: + for (clk_i--; clk_i >= 0; clk_i--) + clk_put(udc->clk[clk_i]); + the_controller = NULL; + kfree(udc); return retval; } @@ -2102,11 +2173,16 @@ static int mv_udc_resume(struct device *_dev) struct mv_udc *udc = the_controller; int retval; - retval = mv_udc_phy_init(udc->phy_regs); - if (retval) { - dev_err(_dev, "phy initialization error %d\n", retval); - return retval; + if (udc->pdata->phy_init) { + retval = udc->pdata->phy_init(udc->phy_regs); + if (retval) { + dev_err(&udc->dev->dev, + "init phy error %d when resume back\n", + retval); + return retval; + } } + udc_reset(udc); ep0_reset(udc); udc_start(udc); diff --git a/drivers/usb/gadget/mv_udc_phy.c b/drivers/usb/gadget/mv_udc_phy.c deleted file mode 100644 index d4dea97e38a5..000000000000 --- a/drivers/usb/gadget/mv_udc_phy.c +++ /dev/null @@ -1,214 +0,0 @@ -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/io.h> -#include <linux/errno.h> - -#include <mach/cputype.h> - -#ifdef CONFIG_ARCH_MMP - -#define UTMI_REVISION 0x0 -#define UTMI_CTRL 0x4 -#define UTMI_PLL 0x8 -#define UTMI_TX 0xc -#define UTMI_RX 0x10 -#define UTMI_IVREF 0x14 -#define UTMI_T0 0x18 -#define UTMI_T1 0x1c -#define UTMI_T2 0x20 -#define UTMI_T3 0x24 -#define UTMI_T4 0x28 -#define UTMI_T5 0x2c -#define UTMI_RESERVE 0x30 -#define UTMI_USB_INT 0x34 -#define UTMI_DBG_CTL 0x38 -#define UTMI_OTG_ADDON 0x3c - -/* For UTMICTRL Register */ -#define UTMI_CTRL_USB_CLK_EN (1 << 31) -/* pxa168 */ -#define UTMI_CTRL_SUSPEND_SET1 (1 << 30) -#define UTMI_CTRL_SUSPEND_SET2 (1 << 29) -#define UTMI_CTRL_RXBUF_PDWN (1 << 24) -#define UTMI_CTRL_TXBUF_PDWN (1 << 11) - -#define UTMI_CTRL_INPKT_DELAY_SHIFT 30 -#define UTMI_CTRL_INPKT_DELAY_SOF_SHIFT 28 -#define UTMI_CTRL_PU_REF_SHIFT 20 -#define UTMI_CTRL_ARC_PULLDN_SHIFT 12 -#define UTMI_CTRL_PLL_PWR_UP_SHIFT 1 -#define UTMI_CTRL_PWR_UP_SHIFT 0 -/* For UTMI_PLL Register */ -#define UTMI_PLL_CLK_BLK_EN_SHIFT 24 -#define UTMI_PLL_FBDIV_SHIFT 4 -#define UTMI_PLL_REFDIV_SHIFT 0 -#define UTMI_PLL_FBDIV_MASK 0x00000FF0 -#define UTMI_PLL_REFDIV_MASK 0x0000000F -#define UTMI_PLL_ICP_MASK 0x00007000 -#define UTMI_PLL_KVCO_MASK 0x00031000 -#define UTMI_PLL_PLLCALI12_SHIFT 29 -#define UTMI_PLL_PLLCALI12_MASK (0x3 << 29) -#define UTMI_PLL_PLLVDD18_SHIFT 27 -#define UTMI_PLL_PLLVDD18_MASK (0x3 << 27) -#define UTMI_PLL_PLLVDD12_SHIFT 25 -#define UTMI_PLL_PLLVDD12_MASK (0x3 << 25) -#define UTMI_PLL_KVCO_SHIFT 15 -#define UTMI_PLL_ICP_SHIFT 12 -/* For UTMI_TX Register */ -#define UTMI_TX_REG_EXT_FS_RCAL_SHIFT 27 -#define UTMI_TX_REG_EXT_FS_RCAL_MASK (0xf << 27) -#define UTMI_TX_REG_EXT_FS_RCAL_EN_MASK 26 -#define UTMI_TX_REG_EXT_FS_RCAL_EN (0x1 << 26) -#define UTMI_TX_LOW_VDD_EN_SHIFT 11 -#define UTMI_TX_IMPCAL_VTH_SHIFT 14 -#define UTMI_TX_IMPCAL_VTH_MASK (0x7 << 14) -#define UTMI_TX_CK60_PHSEL_SHIFT 17 -#define UTMI_TX_CK60_PHSEL_MASK (0xf << 17) -#define UTMI_TX_TXVDD12_SHIFT 22 -#define UTMI_TX_TXVDD12_MASK (0x3 << 22) -#define UTMI_TX_AMP_SHIFT 0 -#define UTMI_TX_AMP_MASK (0x7 << 0) -/* For UTMI_RX Register */ -#define UTMI_RX_SQ_THRESH_SHIFT 4 -#define UTMI_RX_SQ_THRESH_MASK (0xf << 4) -#define UTMI_REG_SQ_LENGTH_SHIFT 15 -#define UTMI_REG_SQ_LENGTH_MASK (0x3 << 15) - -#define REG_RCAL_START 0x00001000 -#define VCOCAL_START 0x00200000 -#define KVCO_EXT 0x00400000 -#define PLL_READY 0x00800000 -#define CLK_BLK_EN 0x01000000 -#endif - -static unsigned int u2o_read(unsigned int base, unsigned int offset) -{ - return readl(base + offset); -} - -static void u2o_set(unsigned int base, unsigned int offset, unsigned int value) -{ - unsigned int reg; - - reg = readl(base + offset); - reg |= value; - writel(reg, base + offset); - readl(base + offset); -} - -static void u2o_clear(unsigned int base, unsigned int offset, - unsigned int value) -{ - unsigned int reg; - - reg = readl(base + offset); - reg &= ~value; - writel(reg, base + offset); - readl(base + offset); -} - -static void u2o_write(unsigned int base, unsigned int offset, - unsigned int value) -{ - writel(value, base + offset); - readl(base + offset); -} - -#ifdef CONFIG_ARCH_MMP -int mv_udc_phy_init(unsigned int base) -{ - unsigned long timeout; - - /* Initialize the USB PHY power */ - if (cpu_is_pxa910()) { - u2o_set(base, UTMI_CTRL, (1 << UTMI_CTRL_INPKT_DELAY_SOF_SHIFT) - | (1 << UTMI_CTRL_PU_REF_SHIFT)); - } - - u2o_set(base, UTMI_CTRL, 1 << UTMI_CTRL_PLL_PWR_UP_SHIFT); - u2o_set(base, UTMI_CTRL, 1 << UTMI_CTRL_PWR_UP_SHIFT); - - /* UTMI_PLL settings */ - u2o_clear(base, UTMI_PLL, UTMI_PLL_PLLVDD18_MASK - | UTMI_PLL_PLLVDD12_MASK | UTMI_PLL_PLLCALI12_MASK - | UTMI_PLL_FBDIV_MASK | UTMI_PLL_REFDIV_MASK - | UTMI_PLL_ICP_MASK | UTMI_PLL_KVCO_MASK); - - u2o_set(base, UTMI_PLL, (0xee << UTMI_PLL_FBDIV_SHIFT) - | (0xb << UTMI_PLL_REFDIV_SHIFT) - | (3 << UTMI_PLL_PLLVDD18_SHIFT) - | (3 << UTMI_PLL_PLLVDD12_SHIFT) - | (3 << UTMI_PLL_PLLCALI12_SHIFT) - | (1 << UTMI_PLL_ICP_SHIFT) | (3 << UTMI_PLL_KVCO_SHIFT)); - - /* UTMI_TX */ - u2o_clear(base, UTMI_TX, UTMI_TX_REG_EXT_FS_RCAL_EN_MASK - | UTMI_TX_TXVDD12_MASK - | UTMI_TX_CK60_PHSEL_MASK | UTMI_TX_IMPCAL_VTH_MASK - | UTMI_TX_REG_EXT_FS_RCAL_MASK | UTMI_TX_AMP_MASK); - u2o_set(base, UTMI_TX, (3 << UTMI_TX_TXVDD12_SHIFT) - | (4 << UTMI_TX_CK60_PHSEL_SHIFT) - | (4 << UTMI_TX_IMPCAL_VTH_SHIFT) - | (8 << UTMI_TX_REG_EXT_FS_RCAL_SHIFT) - | (3 << UTMI_TX_AMP_SHIFT)); - - /* UTMI_RX */ - u2o_clear(base, UTMI_RX, UTMI_RX_SQ_THRESH_MASK - | UTMI_REG_SQ_LENGTH_MASK); - if (cpu_is_pxa168()) - u2o_set(base, UTMI_RX, (7 << UTMI_RX_SQ_THRESH_SHIFT) - | (2 << UTMI_REG_SQ_LENGTH_SHIFT)); - else - u2o_set(base, UTMI_RX, (0x7 << UTMI_RX_SQ_THRESH_SHIFT) - | (2 << UTMI_REG_SQ_LENGTH_SHIFT)); - - /* UTMI_IVREF */ - if (cpu_is_pxa168()) - /* - * fixing Microsoft Altair board interface with NEC hub issue - - * Set UTMI_IVREF from 0x4a3 to 0x4bf - */ - u2o_write(base, UTMI_IVREF, 0x4bf); - - /* calibrate */ - timeout = jiffies + 100; - while ((u2o_read(base, UTMI_PLL) & PLL_READY) == 0) { - if (time_after(jiffies, timeout)) - return -ETIME; - cpu_relax(); - } - - /* toggle VCOCAL_START bit of UTMI_PLL */ - udelay(200); - u2o_set(base, UTMI_PLL, VCOCAL_START); - udelay(40); - u2o_clear(base, UTMI_PLL, VCOCAL_START); - - /* toggle REG_RCAL_START bit of UTMI_TX */ - udelay(200); - u2o_set(base, UTMI_TX, REG_RCAL_START); - udelay(40); - u2o_clear(base, UTMI_TX, REG_RCAL_START); - udelay(200); - - /* make sure phy is ready */ - timeout = jiffies + 100; - while ((u2o_read(base, UTMI_PLL) & PLL_READY) == 0) { - if (time_after(jiffies, timeout)) - return -ETIME; - cpu_relax(); - } - - if (cpu_is_pxa168()) { - u2o_set(base, UTMI_RESERVE, 1 << 5); - /* Turn on UTMI PHY OTG extension */ - u2o_write(base, UTMI_OTG_ADDON, 1); - } - return 0; -} -#else -int mv_udc_phy_init(unsigned int base) -{ - return 0; -} -#endif diff --git a/include/linux/platform_data/mv_usb.h b/include/linux/platform_data/mv_usb.h new file mode 100644 index 000000000000..e9d9149ddf38 --- /dev/null +++ b/include/linux/platform_data/mv_usb.h @@ -0,0 +1,50 @@ +/* + * Copyright (C) 2011 Marvell International Ltd. All rights reserved. + * + * 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. + */ + +#ifndef __MV_PLATFORM_USB_H +#define __MV_PLATFORM_USB_H + +enum pxa_ehci_type { + EHCI_UNDEFINED = 0, + PXA_U2OEHCI, /* pxa 168, 9xx */ + PXA_SPH, /* pxa 168, 9xx SPH */ + MMP3_HSIC, /* mmp3 hsic */ + MMP3_FSIC, /* mmp3 fsic */ +}; + +enum { + MV_USB_MODE_OTG, + MV_USB_MODE_HOST, +}; + +enum { + VBUS_LOW = 0, + VBUS_HIGH = 1 << 0, +}; + +struct mv_usb_addon_irq { + unsigned int irq; + int (*poll)(void); +}; + +struct mv_usb_platform_data { + unsigned int clknum; + char **clkname; + struct mv_usb_addon_irq *id; /* Only valid for OTG. ID pin change*/ + struct mv_usb_addon_irq *vbus; /* valid for OTG/UDC. VBUS change*/ + + /* only valid for HCD. OTG or Host only*/ + unsigned int mode; + + int (*phy_init)(unsigned int regbase); + void (*phy_deinit)(unsigned int regbase); + int (*set_vbus)(unsigned int vbus); +}; + +#endif |
