Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 1 | /* |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 2 | * Copyright 2005-2009 MontaVista Software, Inc. |
| 3 | * Copyright 2008 Freescale Semiconductor, Inc. |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License as published by the |
| 7 | * Free Software Foundation; either version 2 of the License, or (at your |
| 8 | * option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 12 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software Foundation, |
| 17 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 18 | * |
| 19 | * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided |
| 20 | * by Hunter Wu. |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 21 | * Power Management support by Dave Liu <daveliu@freescale.com>, |
| 22 | * Jerry Huang <Chang-Ming.Huang@freescale.com> and |
| 23 | * Anton Vorontsov <avorontsov@ru.mvista.com>. |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 24 | */ |
| 25 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 26 | #include <linux/kernel.h> |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/pm.h> |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 30 | #include <linux/platform_device.h> |
| 31 | #include <linux/fsl_devices.h> |
| 32 | |
| 33 | #include "ehci-fsl.h" |
| 34 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 35 | /* configure so an HC device and id are always provided */ |
| 36 | /* always called with process context; sleeping is OK */ |
| 37 | |
| 38 | /** |
| 39 | * usb_hcd_fsl_probe - initialize FSL-based HCDs |
| 40 | * @drvier: Driver to be used for this HCD |
| 41 | * @pdev: USB Host Controller being probed |
| 42 | * Context: !in_interrupt() |
| 43 | * |
| 44 | * Allocates basic resources for this USB host controller. |
| 45 | * |
| 46 | */ |
Anton Vorontsov | dad3843 | 2009-12-14 18:41:05 +0300 | [diff] [blame] | 47 | static int usb_hcd_fsl_probe(const struct hc_driver *driver, |
| 48 | struct platform_device *pdev) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 49 | { |
| 50 | struct fsl_usb2_platform_data *pdata; |
| 51 | struct usb_hcd *hcd; |
| 52 | struct resource *res; |
| 53 | int irq; |
| 54 | int retval; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 55 | |
| 56 | pr_debug("initializing FSL-SOC USB Controller\n"); |
| 57 | |
| 58 | /* Need platform data for setup */ |
| 59 | pdata = (struct fsl_usb2_platform_data *)pdev->dev.platform_data; |
| 60 | if (!pdata) { |
| 61 | dev_err(&pdev->dev, |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 62 | "No platform data for %s.\n", dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 63 | return -ENODEV; |
| 64 | } |
| 65 | |
| 66 | /* |
| 67 | * This is a host mode driver, verify that we're supposed to be |
| 68 | * in host mode. |
| 69 | */ |
| 70 | if (!((pdata->operating_mode == FSL_USB2_DR_HOST) || |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 71 | (pdata->operating_mode == FSL_USB2_MPH_HOST) || |
| 72 | (pdata->operating_mode == FSL_USB2_DR_OTG))) { |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 73 | dev_err(&pdev->dev, |
| 74 | "Non Host Mode configured for %s. Wrong driver linked.\n", |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 75 | dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 76 | return -ENODEV; |
| 77 | } |
| 78 | |
| 79 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 80 | if (!res) { |
| 81 | dev_err(&pdev->dev, |
| 82 | "Found HC with no IRQ. Check %s setup!\n", |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 83 | dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 84 | return -ENODEV; |
| 85 | } |
| 86 | irq = res->start; |
| 87 | |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 88 | hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 89 | if (!hcd) { |
| 90 | retval = -ENOMEM; |
| 91 | goto err1; |
| 92 | } |
| 93 | |
| 94 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 95 | if (!res) { |
| 96 | dev_err(&pdev->dev, |
| 97 | "Found HC with no register addr. Check %s setup!\n", |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 98 | dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 99 | retval = -ENODEV; |
| 100 | goto err2; |
| 101 | } |
| 102 | hcd->rsrc_start = res->start; |
| 103 | hcd->rsrc_len = res->end - res->start + 1; |
| 104 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, |
| 105 | driver->description)) { |
| 106 | dev_dbg(&pdev->dev, "controller already in use\n"); |
| 107 | retval = -EBUSY; |
| 108 | goto err2; |
| 109 | } |
| 110 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 111 | |
| 112 | if (hcd->regs == NULL) { |
| 113 | dev_dbg(&pdev->dev, "error mapping memory\n"); |
| 114 | retval = -EFAULT; |
| 115 | goto err3; |
| 116 | } |
| 117 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 118 | pdata->regs = hcd->regs; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 119 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 120 | /* |
| 121 | * do platform specific init: check the clock, grab/config pins, etc. |
| 122 | */ |
| 123 | if (pdata->init && pdata->init(pdev)) { |
| 124 | retval = -ENODEV; |
| 125 | goto err3; |
| 126 | } |
| 127 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 128 | /* Enable USB controller, 83xx or 8536 */ |
| 129 | if (pdata->have_sysif_regs) |
| 130 | setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4); |
| 131 | |
| 132 | /* Don't need to set host mode here. It will be done by tdi_reset() */ |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 133 | |
Alan Stern | 442258e | 2007-12-06 14:47:08 -0500 | [diff] [blame] | 134 | retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 135 | if (retval != 0) |
| 136 | goto err4; |
| 137 | return retval; |
| 138 | |
| 139 | err4: |
| 140 | iounmap(hcd->regs); |
| 141 | err3: |
| 142 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 143 | err2: |
| 144 | usb_put_hcd(hcd); |
| 145 | err1: |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 146 | dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 147 | if (pdata->exit) |
| 148 | pdata->exit(pdev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 149 | return retval; |
| 150 | } |
| 151 | |
| 152 | /* may be called without controller electrically present */ |
| 153 | /* may be called with controller, bus, and devices active */ |
| 154 | |
| 155 | /** |
| 156 | * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs |
| 157 | * @dev: USB Host Controller being removed |
| 158 | * Context: !in_interrupt() |
| 159 | * |
| 160 | * Reverses the effect of usb_hcd_fsl_probe(). |
| 161 | * |
| 162 | */ |
Anton Vorontsov | dad3843 | 2009-12-14 18:41:05 +0300 | [diff] [blame] | 163 | static void usb_hcd_fsl_remove(struct usb_hcd *hcd, |
| 164 | struct platform_device *pdev) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 165 | { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 166 | struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; |
| 167 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 168 | usb_remove_hcd(hcd); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 169 | |
| 170 | /* |
| 171 | * do platform specific un-initialization: |
| 172 | * release iomux pins, disable clock, etc. |
| 173 | */ |
| 174 | if (pdata->exit) |
| 175 | pdata->exit(pdev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 176 | iounmap(hcd->regs); |
| 177 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 178 | usb_put_hcd(hcd); |
| 179 | } |
| 180 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 181 | static void ehci_fsl_setup_phy(struct ehci_hcd *ehci, |
| 182 | enum fsl_usb2_phy_modes phy_mode, |
| 183 | unsigned int port_offset) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 184 | { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 185 | u32 portsc; |
| 186 | |
| 187 | portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]); |
| 188 | portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW); |
| 189 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 190 | switch (phy_mode) { |
| 191 | case FSL_USB2_PHY_ULPI: |
| 192 | portsc |= PORT_PTS_ULPI; |
| 193 | break; |
| 194 | case FSL_USB2_PHY_SERIAL: |
| 195 | portsc |= PORT_PTS_SERIAL; |
| 196 | break; |
| 197 | case FSL_USB2_PHY_UTMI_WIDE: |
| 198 | portsc |= PORT_PTS_PTW; |
| 199 | /* fall through */ |
| 200 | case FSL_USB2_PHY_UTMI: |
| 201 | portsc |= PORT_PTS_UTMI; |
| 202 | break; |
| 203 | case FSL_USB2_PHY_NONE: |
| 204 | break; |
| 205 | } |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 206 | ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 207 | } |
| 208 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 209 | static void ehci_fsl_usb_setup(struct ehci_hcd *ehci) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 210 | { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 211 | struct usb_hcd *hcd = ehci_to_hcd(ehci); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 212 | struct fsl_usb2_platform_data *pdata; |
| 213 | void __iomem *non_ehci = hcd->regs; |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 214 | u32 temp; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 215 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 216 | pdata = hcd->self.controller->platform_data; |
| 217 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 218 | /* Enable PHY interface in the control reg. */ |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 219 | if (pdata->have_sysif_regs) { |
| 220 | temp = in_be32(non_ehci + FSL_SOC_USB_CTRL); |
| 221 | out_be32(non_ehci + FSL_SOC_USB_CTRL, temp | 0x00000004); |
| 222 | out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0000001b); |
| 223 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 224 | |
Li Yang | 40acc09 | 2007-05-23 13:58:17 -0700 | [diff] [blame] | 225 | #if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) |
| 226 | /* |
| 227 | * Turn on cache snooping hardware, since some PowerPC platforms |
| 228 | * wholly rely on hardware to deal with cache coherent |
| 229 | */ |
| 230 | |
| 231 | /* Setup Snooping for all the 4GB space */ |
| 232 | /* SNOOP1 starts from 0x0, size 2G */ |
| 233 | out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB); |
| 234 | /* SNOOP2 starts from 0x80000000, size 2G */ |
| 235 | out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); |
| 236 | #endif |
| 237 | |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 238 | if ((pdata->operating_mode == FSL_USB2_DR_HOST) || |
| 239 | (pdata->operating_mode == FSL_USB2_DR_OTG)) |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 240 | ehci_fsl_setup_phy(ehci, pdata->phy_mode, 0); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 241 | |
| 242 | if (pdata->operating_mode == FSL_USB2_MPH_HOST) { |
Kumar Gala | 8cd42e9 | 2006-01-20 13:57:52 -0800 | [diff] [blame] | 243 | unsigned int chip, rev, svr; |
| 244 | |
| 245 | svr = mfspr(SPRN_SVR); |
| 246 | chip = svr >> 16; |
| 247 | rev = (svr >> 4) & 0xf; |
| 248 | |
| 249 | /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ |
| 250 | if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055)) |
| 251 | ehci->has_fsl_port_bug = 1; |
| 252 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 253 | if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 254 | ehci_fsl_setup_phy(ehci, pdata->phy_mode, 0); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 255 | if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 256 | ehci_fsl_setup_phy(ehci, pdata->phy_mode, 1); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 257 | } |
| 258 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 259 | if (pdata->have_sysif_regs) { |
Srikanth Srinivasan | 4f53425 | 2008-07-02 02:14:33 -0500 | [diff] [blame] | 260 | #ifdef CONFIG_PPC_85xx |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 261 | out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008); |
| 262 | out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080); |
Srikanth Srinivasan | 4f53425 | 2008-07-02 02:14:33 -0500 | [diff] [blame] | 263 | #else |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 264 | out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c); |
| 265 | out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040); |
Srikanth Srinivasan | 4f53425 | 2008-07-02 02:14:33 -0500 | [diff] [blame] | 266 | #endif |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 267 | out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); |
| 268 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | /* called after powerup, by probe or system-pm "wakeup" */ |
| 272 | static int ehci_fsl_reinit(struct ehci_hcd *ehci) |
| 273 | { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 274 | ehci_fsl_usb_setup(ehci); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 275 | ehci_port_power(ehci, 0); |
| 276 | |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | /* called during probe() after chip reset completes */ |
| 281 | static int ehci_fsl_setup(struct usb_hcd *hcd) |
| 282 | { |
| 283 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 284 | int retval; |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 285 | struct fsl_usb2_platform_data *pdata; |
| 286 | |
| 287 | pdata = hcd->self.controller->platform_data; |
| 288 | ehci->big_endian_desc = pdata->big_endian_desc; |
| 289 | ehci->big_endian_mmio = pdata->big_endian_mmio; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 290 | |
| 291 | /* EHCI registers start at offset 0x100 */ |
| 292 | ehci->caps = hcd->regs + 0x100; |
| 293 | ehci->regs = hcd->regs + 0x100 + |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 294 | HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 295 | dbg_hcs_params(ehci, "reset"); |
| 296 | dbg_hcc_params(ehci, "reset"); |
| 297 | |
| 298 | /* cache this readonly data; minimize chip reads */ |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 299 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 300 | |
Matthieu CASTET | 65fd427 | 2010-09-06 18:26:56 +0200 | [diff] [blame] | 301 | hcd->has_tt = 1; |
| 302 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 303 | retval = ehci_halt(ehci); |
| 304 | if (retval) |
| 305 | return retval; |
| 306 | |
| 307 | /* data structure init */ |
| 308 | retval = ehci_init(hcd); |
| 309 | if (retval) |
| 310 | return retval; |
| 311 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 312 | ehci->sbrn = 0x20; |
| 313 | |
| 314 | ehci_reset(ehci); |
| 315 | |
| 316 | retval = ehci_fsl_reinit(ehci); |
| 317 | return retval; |
| 318 | } |
| 319 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 320 | struct ehci_fsl { |
| 321 | struct ehci_hcd ehci; |
| 322 | |
| 323 | #ifdef CONFIG_PM |
| 324 | /* Saved USB PHY settings, need to restore after deep sleep. */ |
| 325 | u32 usb_ctrl; |
| 326 | #endif |
| 327 | }; |
| 328 | |
| 329 | #ifdef CONFIG_PM |
| 330 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame^] | 331 | #ifdef CONFIG_PPC_MPC512x |
| 332 | static int ehci_fsl_mpc512x_drv_suspend(struct device *dev) |
| 333 | { |
| 334 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 335 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 336 | struct fsl_usb2_platform_data *pdata = dev->platform_data; |
| 337 | u32 tmp; |
| 338 | |
| 339 | #ifdef DEBUG |
| 340 | u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE); |
| 341 | mode &= USBMODE_CM_MASK; |
| 342 | tmp = ehci_readl(ehci, hcd->regs + 0x140); /* usbcmd */ |
| 343 | |
| 344 | dev_dbg(dev, "suspend=%d already_suspended=%d " |
| 345 | "mode=%d usbcmd %08x\n", pdata->suspended, |
| 346 | pdata->already_suspended, mode, tmp); |
| 347 | #endif |
| 348 | |
| 349 | /* |
| 350 | * If the controller is already suspended, then this must be a |
| 351 | * PM suspend. Remember this fact, so that we will leave the |
| 352 | * controller suspended at PM resume time. |
| 353 | */ |
| 354 | if (pdata->suspended) { |
| 355 | dev_dbg(dev, "already suspended, leaving early\n"); |
| 356 | pdata->already_suspended = 1; |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | dev_dbg(dev, "suspending...\n"); |
| 361 | |
| 362 | hcd->state = HC_STATE_SUSPENDED; |
| 363 | dev->power.power_state = PMSG_SUSPEND; |
| 364 | |
| 365 | /* ignore non-host interrupts */ |
| 366 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 367 | |
| 368 | /* stop the controller */ |
| 369 | tmp = ehci_readl(ehci, &ehci->regs->command); |
| 370 | tmp &= ~CMD_RUN; |
| 371 | ehci_writel(ehci, tmp, &ehci->regs->command); |
| 372 | |
| 373 | /* save EHCI registers */ |
| 374 | pdata->pm_command = ehci_readl(ehci, &ehci->regs->command); |
| 375 | pdata->pm_command &= ~CMD_RUN; |
| 376 | pdata->pm_status = ehci_readl(ehci, &ehci->regs->status); |
| 377 | pdata->pm_intr_enable = ehci_readl(ehci, &ehci->regs->intr_enable); |
| 378 | pdata->pm_frame_index = ehci_readl(ehci, &ehci->regs->frame_index); |
| 379 | pdata->pm_segment = ehci_readl(ehci, &ehci->regs->segment); |
| 380 | pdata->pm_frame_list = ehci_readl(ehci, &ehci->regs->frame_list); |
| 381 | pdata->pm_async_next = ehci_readl(ehci, &ehci->regs->async_next); |
| 382 | pdata->pm_configured_flag = |
| 383 | ehci_readl(ehci, &ehci->regs->configured_flag); |
| 384 | pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]); |
| 385 | pdata->pm_usbgenctrl = ehci_readl(ehci, |
| 386 | hcd->regs + FSL_SOC_USB_USBGENCTRL); |
| 387 | |
| 388 | /* clear the W1C bits */ |
| 389 | pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS); |
| 390 | |
| 391 | pdata->suspended = 1; |
| 392 | |
| 393 | /* clear PP to cut power to the port */ |
| 394 | tmp = ehci_readl(ehci, &ehci->regs->port_status[0]); |
| 395 | tmp &= ~PORT_POWER; |
| 396 | ehci_writel(ehci, tmp, &ehci->regs->port_status[0]); |
| 397 | |
| 398 | return 0; |
| 399 | } |
| 400 | |
| 401 | static int ehci_fsl_mpc512x_drv_resume(struct device *dev) |
| 402 | { |
| 403 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 404 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 405 | struct fsl_usb2_platform_data *pdata = dev->platform_data; |
| 406 | u32 tmp; |
| 407 | |
| 408 | dev_dbg(dev, "suspend=%d already_suspended=%d\n", |
| 409 | pdata->suspended, pdata->already_suspended); |
| 410 | |
| 411 | /* |
| 412 | * If the controller was already suspended at suspend time, |
| 413 | * then don't resume it now. |
| 414 | */ |
| 415 | if (pdata->already_suspended) { |
| 416 | dev_dbg(dev, "already suspended, leaving early\n"); |
| 417 | pdata->already_suspended = 0; |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | if (!pdata->suspended) { |
| 422 | dev_dbg(dev, "not suspended, leaving early\n"); |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | pdata->suspended = 0; |
| 427 | |
| 428 | dev_dbg(dev, "resuming...\n"); |
| 429 | |
| 430 | /* set host mode */ |
| 431 | tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0); |
| 432 | ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE); |
| 433 | |
| 434 | ehci_writel(ehci, pdata->pm_usbgenctrl, |
| 435 | hcd->regs + FSL_SOC_USB_USBGENCTRL); |
| 436 | ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE, |
| 437 | hcd->regs + FSL_SOC_USB_ISIPHYCTRL); |
| 438 | |
| 439 | /* restore EHCI registers */ |
| 440 | ehci_writel(ehci, pdata->pm_command, &ehci->regs->command); |
| 441 | ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable); |
| 442 | ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index); |
| 443 | ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment); |
| 444 | ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list); |
| 445 | ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next); |
| 446 | ehci_writel(ehci, pdata->pm_configured_flag, |
| 447 | &ehci->regs->configured_flag); |
| 448 | ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]); |
| 449 | |
| 450 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 451 | hcd->state = HC_STATE_RUNNING; |
| 452 | dev->power.power_state = PMSG_ON; |
| 453 | |
| 454 | tmp = ehci_readl(ehci, &ehci->regs->command); |
| 455 | tmp |= CMD_RUN; |
| 456 | ehci_writel(ehci, tmp, &ehci->regs->command); |
| 457 | |
| 458 | usb_hcd_resume_root_hub(hcd); |
| 459 | |
| 460 | return 0; |
| 461 | } |
| 462 | #else |
| 463 | static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev) |
| 464 | { |
| 465 | return 0; |
| 466 | } |
| 467 | |
| 468 | static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev) |
| 469 | { |
| 470 | return 0; |
| 471 | } |
| 472 | #endif /* CONFIG_PPC_MPC512x */ |
| 473 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 474 | static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd) |
| 475 | { |
| 476 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 477 | |
| 478 | return container_of(ehci, struct ehci_fsl, ehci); |
| 479 | } |
| 480 | |
| 481 | static int ehci_fsl_drv_suspend(struct device *dev) |
| 482 | { |
| 483 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 484 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); |
| 485 | void __iomem *non_ehci = hcd->regs; |
| 486 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame^] | 487 | if (of_device_is_compatible(dev->parent->of_node, |
| 488 | "fsl,mpc5121-usb2-dr")) { |
| 489 | return ehci_fsl_mpc512x_drv_suspend(dev); |
| 490 | } |
| 491 | |
Alan Stern | 4147200 | 2010-06-25 14:02:14 -0400 | [diff] [blame] | 492 | ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), |
| 493 | device_may_wakeup(dev)); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 494 | if (!fsl_deep_sleep()) |
| 495 | return 0; |
| 496 | |
| 497 | ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL); |
| 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | static int ehci_fsl_drv_resume(struct device *dev) |
| 502 | { |
| 503 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 504 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); |
| 505 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 506 | void __iomem *non_ehci = hcd->regs; |
| 507 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame^] | 508 | if (of_device_is_compatible(dev->parent->of_node, |
| 509 | "fsl,mpc5121-usb2-dr")) { |
| 510 | return ehci_fsl_mpc512x_drv_resume(dev); |
| 511 | } |
| 512 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 513 | ehci_prepare_ports_for_controller_resume(ehci); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 514 | if (!fsl_deep_sleep()) |
| 515 | return 0; |
| 516 | |
| 517 | usb_root_hub_lost_power(hcd->self.root_hub); |
| 518 | |
| 519 | /* Restore USB PHY settings and enable the controller. */ |
| 520 | out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl); |
| 521 | |
| 522 | ehci_reset(ehci); |
| 523 | ehci_fsl_reinit(ehci); |
| 524 | |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | static int ehci_fsl_drv_restore(struct device *dev) |
| 529 | { |
| 530 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 531 | |
| 532 | usb_root_hub_lost_power(hcd->self.root_hub); |
| 533 | return 0; |
| 534 | } |
| 535 | |
| 536 | static struct dev_pm_ops ehci_fsl_pm_ops = { |
| 537 | .suspend = ehci_fsl_drv_suspend, |
| 538 | .resume = ehci_fsl_drv_resume, |
| 539 | .restore = ehci_fsl_drv_restore, |
| 540 | }; |
| 541 | |
| 542 | #define EHCI_FSL_PM_OPS (&ehci_fsl_pm_ops) |
| 543 | #else |
| 544 | #define EHCI_FSL_PM_OPS NULL |
| 545 | #endif /* CONFIG_PM */ |
| 546 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 547 | static const struct hc_driver ehci_fsl_hc_driver = { |
| 548 | .description = hcd_name, |
| 549 | .product_desc = "Freescale On-Chip EHCI Host Controller", |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 550 | .hcd_priv_size = sizeof(struct ehci_fsl), |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 551 | |
| 552 | /* |
| 553 | * generic hardware linkage |
| 554 | */ |
| 555 | .irq = ehci_irq, |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 556 | .flags = HCD_USB2 | HCD_MEMORY, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 557 | |
| 558 | /* |
| 559 | * basic lifecycle operations |
| 560 | */ |
| 561 | .reset = ehci_fsl_setup, |
| 562 | .start = ehci_run, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 563 | .stop = ehci_stop, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 564 | .shutdown = ehci_shutdown, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 565 | |
| 566 | /* |
| 567 | * managing i/o requests and associated device resources |
| 568 | */ |
| 569 | .urb_enqueue = ehci_urb_enqueue, |
| 570 | .urb_dequeue = ehci_urb_dequeue, |
| 571 | .endpoint_disable = ehci_endpoint_disable, |
Alan Stern | b18ffd4 | 2009-05-27 18:21:56 -0400 | [diff] [blame] | 572 | .endpoint_reset = ehci_endpoint_reset, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 573 | |
| 574 | /* |
| 575 | * scheduling support |
| 576 | */ |
| 577 | .get_frame_number = ehci_get_frame, |
| 578 | |
| 579 | /* |
| 580 | * root hub support |
| 581 | */ |
| 582 | .hub_status_data = ehci_hub_status_data, |
| 583 | .hub_control = ehci_hub_control, |
| 584 | .bus_suspend = ehci_bus_suspend, |
| 585 | .bus_resume = ehci_bus_resume, |
Balaji Rao | 90da096 | 2007-11-22 01:58:14 +0530 | [diff] [blame] | 586 | .relinquish_port = ehci_relinquish_port, |
Alan Stern | 3a31155 | 2008-05-20 16:58:29 -0400 | [diff] [blame] | 587 | .port_handed_over = ehci_port_handed_over, |
Alan Stern | 914b701 | 2009-06-29 10:47:30 -0400 | [diff] [blame] | 588 | |
| 589 | .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 590 | }; |
| 591 | |
| 592 | static int ehci_fsl_drv_probe(struct platform_device *pdev) |
| 593 | { |
| 594 | if (usb_disabled()) |
| 595 | return -ENODEV; |
| 596 | |
David Brownell | 135db04 | 2008-02-11 18:40:46 -0800 | [diff] [blame] | 597 | /* FIXME we only want one one probe() not two */ |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 598 | return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev); |
| 599 | } |
| 600 | |
| 601 | static int ehci_fsl_drv_remove(struct platform_device *pdev) |
| 602 | { |
| 603 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 604 | |
David Brownell | 135db04 | 2008-02-11 18:40:46 -0800 | [diff] [blame] | 605 | /* FIXME we only want one one remove() not two */ |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 606 | usb_hcd_fsl_remove(hcd, pdev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 607 | return 0; |
| 608 | } |
| 609 | |
David Brownell | 135db04 | 2008-02-11 18:40:46 -0800 | [diff] [blame] | 610 | MODULE_ALIAS("platform:fsl-ehci"); |
Kumar Gala | 01cced2 | 2006-04-11 10:07:16 -0500 | [diff] [blame] | 611 | |
| 612 | static struct platform_driver ehci_fsl_driver = { |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 613 | .probe = ehci_fsl_drv_probe, |
| 614 | .remove = ehci_fsl_drv_remove, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 615 | .shutdown = usb_hcd_platform_shutdown, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 616 | .driver = { |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 617 | .name = "fsl-ehci", |
| 618 | .pm = EHCI_FSL_PM_OPS, |
David Brownell | 135db04 | 2008-02-11 18:40:46 -0800 | [diff] [blame] | 619 | }, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 620 | }; |