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. |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 3 | * Copyright 2008,2012,2015 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> |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 27 | #include <linux/module.h> |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 28 | #include <linux/types.h> |
| 29 | #include <linux/delay.h> |
| 30 | #include <linux/pm.h> |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 31 | #include <linux/err.h> |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 32 | #include <linux/usb.h> |
| 33 | #include <linux/usb/ehci_def.h> |
| 34 | #include <linux/usb/hcd.h> |
| 35 | #include <linux/usb/otg.h> |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 36 | #include <linux/platform_device.h> |
| 37 | #include <linux/fsl_devices.h> |
| 38 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 39 | #include "ehci.h" |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 40 | #include "ehci-fsl.h" |
| 41 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 42 | #define DRIVER_DESC "Freescale EHCI Host controller driver" |
| 43 | #define DRV_NAME "ehci-fsl" |
| 44 | |
| 45 | static struct hc_driver __read_mostly fsl_ehci_hc_driver; |
| 46 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 47 | /* configure so an HC device and id are always provided */ |
| 48 | /* always called with process context; sleeping is OK */ |
| 49 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 50 | /* |
| 51 | * fsl_ehci_drv_probe - initialize FSL-based HCDs |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 52 | * @pdev: USB Host Controller being probed |
| 53 | * Context: !in_interrupt() |
| 54 | * |
| 55 | * Allocates basic resources for this USB host controller. |
| 56 | * |
| 57 | */ |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 58 | static int fsl_ehci_drv_probe(struct platform_device *pdev) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 59 | { |
| 60 | struct fsl_usb2_platform_data *pdata; |
| 61 | struct usb_hcd *hcd; |
| 62 | struct resource *res; |
| 63 | int irq; |
| 64 | int retval; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 65 | |
| 66 | pr_debug("initializing FSL-SOC USB Controller\n"); |
| 67 | |
| 68 | /* Need platform data for setup */ |
Jingoo Han | 37c3a3c | 2013-09-09 14:04:44 +0900 | [diff] [blame] | 69 | pdata = dev_get_platdata(&pdev->dev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 70 | if (!pdata) { |
| 71 | dev_err(&pdev->dev, |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 72 | "No platform data for %s.\n", dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 73 | return -ENODEV; |
| 74 | } |
| 75 | |
| 76 | /* |
| 77 | * This is a host mode driver, verify that we're supposed to be |
| 78 | * in host mode. |
| 79 | */ |
| 80 | if (!((pdata->operating_mode == FSL_USB2_DR_HOST) || |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 81 | (pdata->operating_mode == FSL_USB2_MPH_HOST) || |
| 82 | (pdata->operating_mode == FSL_USB2_DR_OTG))) { |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 83 | dev_err(&pdev->dev, |
| 84 | "Non Host Mode configured for %s. Wrong driver linked.\n", |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 85 | dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 86 | return -ENODEV; |
| 87 | } |
| 88 | |
| 89 | res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 90 | if (!res) { |
| 91 | dev_err(&pdev->dev, |
| 92 | "Found HC with no IRQ. Check %s setup!\n", |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 93 | dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 94 | return -ENODEV; |
| 95 | } |
| 96 | irq = res->start; |
| 97 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 98 | hcd = usb_create_hcd(&fsl_ehci_hc_driver, &pdev->dev, |
| 99 | dev_name(&pdev->dev)); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 100 | if (!hcd) { |
| 101 | retval = -ENOMEM; |
| 102 | goto err1; |
| 103 | } |
| 104 | |
| 105 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 106 | hcd->regs = devm_ioremap_resource(&pdev->dev, res); |
| 107 | if (IS_ERR(hcd->regs)) { |
| 108 | retval = PTR_ERR(hcd->regs); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 109 | goto err2; |
| 110 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 111 | |
Varka Bhadram | ce98f54 | 2014-11-04 07:51:32 +0530 | [diff] [blame] | 112 | hcd->rsrc_start = res->start; |
| 113 | hcd->rsrc_len = resource_size(res); |
| 114 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 115 | pdata->regs = hcd->regs; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 116 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 117 | if (pdata->power_budget) |
| 118 | hcd->power_budget = pdata->power_budget; |
| 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; |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 125 | goto err2; |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 126 | } |
| 127 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 128 | /* Enable USB controller, 83xx or 8536 */ |
Ramneek Mehresh | ad1260e | 2013-09-16 15:11:33 +0530 | [diff] [blame] | 129 | if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6) |
Nikhil Badola | 4e02bea | 2015-07-14 17:28:47 +0530 | [diff] [blame] | 130 | clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL, |
| 131 | CONTROL_REGISTER_W1C_MASK, 0x4); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 132 | |
Nikhil Badola | 523f1de | 2015-06-15 15:47:29 +0530 | [diff] [blame] | 133 | /* |
| 134 | * Enable UTMI phy and program PTS field in UTMI mode before asserting |
| 135 | * controller reset for USB Controller version 2.5 |
| 136 | */ |
| 137 | if (pdata->has_fsl_erratum_a007792) { |
Nikhil Badola | 4e02bea | 2015-07-14 17:28:47 +0530 | [diff] [blame] | 138 | clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL, |
| 139 | CONTROL_REGISTER_W1C_MASK, CTRL_UTMI_PHY_EN); |
Nikhil Badola | 523f1de | 2015-06-15 15:47:29 +0530 | [diff] [blame] | 140 | writel(PORT_PTS_UTMI, hcd->regs + FSL_SOC_USB_PORTSC1); |
| 141 | } |
| 142 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 143 | /* 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] | 144 | |
Yong Zhang | b5dd18d | 2011-09-07 16:10:52 +0800 | [diff] [blame] | 145 | retval = usb_add_hcd(hcd, irq, IRQF_SHARED); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 146 | if (retval != 0) |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 147 | goto err2; |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 148 | device_wakeup_enable(hcd->self.controller); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 149 | |
| 150 | #ifdef CONFIG_USB_OTG |
| 151 | if (pdata->operating_mode == FSL_USB2_DR_OTG) { |
| 152 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 153 | |
Antoine Tenart | 3d46e73 | 2014-09-24 23:05:50 +0400 | [diff] [blame] | 154 | hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2); |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 155 | dev_dbg(&pdev->dev, "hcd=0x%p ehci=0x%p, phy=0x%p\n", |
Antoine Tenart | 3d46e73 | 2014-09-24 23:05:50 +0400 | [diff] [blame] | 156 | hcd, ehci, hcd->usb_phy); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 157 | |
Antoine Tenart | 3d46e73 | 2014-09-24 23:05:50 +0400 | [diff] [blame] | 158 | if (!IS_ERR_OR_NULL(hcd->usb_phy)) { |
| 159 | retval = otg_set_host(hcd->usb_phy->otg, |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 160 | &ehci_to_hcd(ehci)->self); |
| 161 | if (retval) { |
Antoine Tenart | 3d46e73 | 2014-09-24 23:05:50 +0400 | [diff] [blame] | 162 | usb_put_phy(hcd->usb_phy); |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 163 | goto err2; |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 164 | } |
| 165 | } else { |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 166 | dev_err(&pdev->dev, "can't find phy\n"); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 167 | retval = -ENODEV; |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 168 | goto err2; |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 169 | } |
| 170 | } |
| 171 | #endif |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 172 | return retval; |
| 173 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 174 | err2: |
| 175 | usb_put_hcd(hcd); |
| 176 | err1: |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 177 | 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] | 178 | if (pdata->exit) |
| 179 | pdata->exit(pdev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 180 | return retval; |
| 181 | } |
| 182 | |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 183 | static int ehci_fsl_setup_phy(struct usb_hcd *hcd, |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 184 | enum fsl_usb2_phy_modes phy_mode, |
| 185 | unsigned int port_offset) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 186 | { |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 187 | u32 portsc; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 188 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Shengzhou Liu | 28c56ea | 2012-02-16 18:02:20 +0800 | [diff] [blame] | 189 | void __iomem *non_ehci = hcd->regs; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 190 | struct device *dev = hcd->self.controller; |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 191 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); |
Anatolij Gustschin | f941f69 | 2012-04-10 10:48:11 +0200 | [diff] [blame] | 192 | |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 193 | if (pdata->controller_ver < 0) { |
| 194 | dev_warn(hcd->self.controller, "Could not get controller version\n"); |
Ben Collins | d479c91 | 2012-10-19 10:24:12 -0400 | [diff] [blame] | 195 | return -ENODEV; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 196 | } |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 197 | |
| 198 | portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]); |
| 199 | portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW); |
| 200 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 201 | switch (phy_mode) { |
| 202 | case FSL_USB2_PHY_ULPI: |
Anatolij Gustschin | f66dea7 | 2012-12-04 14:24:30 +0100 | [diff] [blame] | 203 | if (pdata->have_sysif_regs && pdata->controller_ver) { |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 204 | /* controller version 1.6 or above */ |
Nikhil Badola | 4e02bea | 2015-07-14 17:28:47 +0530 | [diff] [blame] | 205 | clrbits32(non_ehci + FSL_SOC_USB_CTRL, |
| 206 | CONTROL_REGISTER_W1C_MASK | UTMI_PHY_EN); |
| 207 | clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, |
| 208 | CONTROL_REGISTER_W1C_MASK, |
| 209 | ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN); |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 210 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 211 | portsc |= PORT_PTS_ULPI; |
| 212 | break; |
| 213 | case FSL_USB2_PHY_SERIAL: |
| 214 | portsc |= PORT_PTS_SERIAL; |
| 215 | break; |
| 216 | case FSL_USB2_PHY_UTMI_WIDE: |
| 217 | portsc |= PORT_PTS_PTW; |
| 218 | /* fall through */ |
| 219 | case FSL_USB2_PHY_UTMI: |
Nikhil Badola | 6009d95 | 2015-06-15 15:48:22 +0530 | [diff] [blame] | 220 | case FSL_USB2_PHY_UTMI_DUAL: |
Anatolij Gustschin | f66dea7 | 2012-12-04 14:24:30 +0100 | [diff] [blame] | 221 | if (pdata->have_sysif_regs && pdata->controller_ver) { |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 222 | /* controller version 1.6 or above */ |
Nikhil Badola | 4e02bea | 2015-07-14 17:28:47 +0530 | [diff] [blame] | 223 | clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, |
| 224 | CONTROL_REGISTER_W1C_MASK, UTMI_PHY_EN); |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 225 | mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to |
| 226 | become stable - 10ms*/ |
| 227 | } |
Shengzhou Liu | 28c56ea | 2012-02-16 18:02:20 +0800 | [diff] [blame] | 228 | /* enable UTMI PHY */ |
Anatolij Gustschin | f941f69 | 2012-04-10 10:48:11 +0200 | [diff] [blame] | 229 | if (pdata->have_sysif_regs) |
Nikhil Badola | 4e02bea | 2015-07-14 17:28:47 +0530 | [diff] [blame] | 230 | clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, |
| 231 | CONTROL_REGISTER_W1C_MASK, |
| 232 | CTRL_UTMI_PHY_EN); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 233 | portsc |= PORT_PTS_UTMI; |
| 234 | break; |
| 235 | case FSL_USB2_PHY_NONE: |
| 236 | break; |
| 237 | } |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 238 | |
Nikhil Badola | f4fdfaa | 2015-07-14 17:28:10 +0530 | [diff] [blame] | 239 | /* |
| 240 | * check PHY_CLK_VALID to determine phy clock presence before writing |
| 241 | * to portsc |
| 242 | */ |
| 243 | if (pdata->check_phy_clk_valid) { |
| 244 | if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID)) { |
| 245 | dev_warn(hcd->self.controller, |
| 246 | "USB PHY clock invalid\n"); |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 247 | return -EINVAL; |
| 248 | } |
| 249 | } |
| 250 | |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 251 | ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 252 | |
Anatolij Gustschin | f66dea7 | 2012-12-04 14:24:30 +0100 | [diff] [blame] | 253 | if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs) |
Nikhil Badola | 4e02bea | 2015-07-14 17:28:47 +0530 | [diff] [blame] | 254 | clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL, |
| 255 | CONTROL_REGISTER_W1C_MASK, USB_CTRL_USB_EN); |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 256 | |
| 257 | return 0; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 258 | } |
| 259 | |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 260 | static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 261 | { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 262 | struct usb_hcd *hcd = ehci_to_hcd(ehci); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 263 | struct fsl_usb2_platform_data *pdata; |
| 264 | void __iomem *non_ehci = hcd->regs; |
| 265 | |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 266 | pdata = dev_get_platdata(hcd->self.controller); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 267 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 268 | if (pdata->have_sysif_regs) { |
Pan Jiafei | 4c95432 | 2012-02-17 13:57:16 +0800 | [diff] [blame] | 269 | /* |
| 270 | * Turn on cache snooping hardware, since some PowerPC platforms |
| 271 | * wholly rely on hardware to deal with cache coherent |
| 272 | */ |
| 273 | |
| 274 | /* Setup Snooping for all the 4GB space */ |
| 275 | /* SNOOP1 starts from 0x0, size 2G */ |
| 276 | out_be32(non_ehci + FSL_SOC_USB_SNOOP1, 0x0 | SNOOP_SIZE_2GB); |
| 277 | /* SNOOP2 starts from 0x80000000, size 2G */ |
| 278 | out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 279 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 280 | |
Nikhil Badola | f8786a9 | 2015-08-06 14:51:27 +0530 | [diff] [blame^] | 281 | /* Deal with USB erratum A-005275 */ |
| 282 | if (pdata->has_fsl_erratum_a005275 == 1) |
| 283 | ehci->has_fsl_hs_errata = 1; |
| 284 | |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 285 | if ((pdata->operating_mode == FSL_USB2_DR_HOST) || |
| 286 | (pdata->operating_mode == FSL_USB2_DR_OTG)) |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 287 | if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) |
| 288 | return -EINVAL; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 289 | |
| 290 | if (pdata->operating_mode == FSL_USB2_MPH_HOST) { |
Kumar Gala | 8cd42e9 | 2006-01-20 13:57:52 -0800 | [diff] [blame] | 291 | unsigned int chip, rev, svr; |
| 292 | |
| 293 | svr = mfspr(SPRN_SVR); |
| 294 | chip = svr >> 16; |
| 295 | rev = (svr >> 4) & 0xf; |
| 296 | |
| 297 | /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ |
| 298 | if ((rev == 1) && (chip >= 0x8050) && (chip <= 0x8055)) |
| 299 | ehci->has_fsl_port_bug = 1; |
| 300 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 301 | if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 302 | if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) |
| 303 | return -EINVAL; |
| 304 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 305 | if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 306 | if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1)) |
| 307 | return -EINVAL; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 308 | } |
| 309 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 310 | if (pdata->have_sysif_regs) { |
Kumar Gala | 08d7660 | 2012-07-10 06:58:48 -0500 | [diff] [blame] | 311 | #ifdef CONFIG_FSL_SOC_BOOKE |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 312 | out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x00000008); |
| 313 | out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000080); |
Srikanth Srinivasan | 4f53425 | 2008-07-02 02:14:33 -0500 | [diff] [blame] | 314 | #else |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 315 | out_be32(non_ehci + FSL_SOC_USB_PRICTRL, 0x0000000c); |
| 316 | out_be32(non_ehci + FSL_SOC_USB_AGECNTTHRSH, 0x00000040); |
Srikanth Srinivasan | 4f53425 | 2008-07-02 02:14:33 -0500 | [diff] [blame] | 317 | #endif |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 318 | out_be32(non_ehci + FSL_SOC_USB_SICTRL, 0x00000001); |
| 319 | } |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 320 | |
| 321 | return 0; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | /* called after powerup, by probe or system-pm "wakeup" */ |
| 325 | static int ehci_fsl_reinit(struct ehci_hcd *ehci) |
| 326 | { |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 327 | if (ehci_fsl_usb_setup(ehci)) |
| 328 | return -EINVAL; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 329 | |
| 330 | return 0; |
| 331 | } |
| 332 | |
| 333 | /* called during probe() after chip reset completes */ |
| 334 | static int ehci_fsl_setup(struct usb_hcd *hcd) |
| 335 | { |
| 336 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 337 | int retval; |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 338 | struct fsl_usb2_platform_data *pdata; |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 339 | struct device *dev; |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 340 | |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 341 | dev = hcd->self.controller; |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 342 | pdata = dev_get_platdata(hcd->self.controller); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 343 | ehci->big_endian_desc = pdata->big_endian_desc; |
| 344 | ehci->big_endian_mmio = pdata->big_endian_mmio; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 345 | |
| 346 | /* EHCI registers start at offset 0x100 */ |
| 347 | ehci->caps = hcd->regs + 0x100; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 348 | |
Christian Engelmayer | e6604a7 | 2013-04-03 12:18:51 +0200 | [diff] [blame] | 349 | #ifdef CONFIG_PPC_83xx |
| 350 | /* |
| 351 | * Deal with MPC834X that need port power to be cycled after the power |
| 352 | * fault condition is removed. Otherwise the state machine does not |
| 353 | * reflect PORTSC[CSC] correctly. |
| 354 | */ |
| 355 | ehci->need_oc_pp_cycle = 1; |
| 356 | #endif |
| 357 | |
Matthieu CASTET | 65fd427 | 2010-09-06 18:26:56 +0200 | [diff] [blame] | 358 | hcd->has_tt = 1; |
| 359 | |
Alan Stern | 1a49e2a | 2012-07-09 15:55:14 -0400 | [diff] [blame] | 360 | retval = ehci_setup(hcd); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 361 | if (retval) |
| 362 | return retval; |
| 363 | |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 364 | if (of_device_is_compatible(dev->parent->of_node, |
| 365 | "fsl,mpc5121-usb2-dr")) { |
| 366 | /* |
| 367 | * set SBUSCFG:AHBBRST so that control msgs don't |
| 368 | * fail when doing heavy PATA writes. |
| 369 | */ |
| 370 | ehci_writel(ehci, SBUSCFG_INCR8, |
| 371 | hcd->regs + FSL_SOC_USB_SBUSCFG); |
| 372 | } |
| 373 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 374 | retval = ehci_fsl_reinit(ehci); |
| 375 | return retval; |
| 376 | } |
| 377 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 378 | struct ehci_fsl { |
| 379 | struct ehci_hcd ehci; |
| 380 | |
| 381 | #ifdef CONFIG_PM |
| 382 | /* Saved USB PHY settings, need to restore after deep sleep. */ |
| 383 | u32 usb_ctrl; |
| 384 | #endif |
| 385 | }; |
| 386 | |
| 387 | #ifdef CONFIG_PM |
| 388 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 389 | #ifdef CONFIG_PPC_MPC512x |
| 390 | static int ehci_fsl_mpc512x_drv_suspend(struct device *dev) |
| 391 | { |
| 392 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 393 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 394 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 395 | u32 tmp; |
| 396 | |
Oliver Neukum | 1c20163 | 2013-11-18 13:23:16 +0100 | [diff] [blame] | 397 | #ifdef CONFIG_DYNAMIC_DEBUG |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 398 | u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE); |
| 399 | mode &= USBMODE_CM_MASK; |
| 400 | tmp = ehci_readl(ehci, hcd->regs + 0x140); /* usbcmd */ |
| 401 | |
| 402 | dev_dbg(dev, "suspend=%d already_suspended=%d " |
| 403 | "mode=%d usbcmd %08x\n", pdata->suspended, |
| 404 | pdata->already_suspended, mode, tmp); |
| 405 | #endif |
| 406 | |
| 407 | /* |
| 408 | * If the controller is already suspended, then this must be a |
| 409 | * PM suspend. Remember this fact, so that we will leave the |
| 410 | * controller suspended at PM resume time. |
| 411 | */ |
| 412 | if (pdata->suspended) { |
| 413 | dev_dbg(dev, "already suspended, leaving early\n"); |
| 414 | pdata->already_suspended = 1; |
| 415 | return 0; |
| 416 | } |
| 417 | |
| 418 | dev_dbg(dev, "suspending...\n"); |
| 419 | |
Alan Stern | e879990 | 2011-08-18 16:31:30 -0400 | [diff] [blame] | 420 | ehci->rh_state = EHCI_RH_SUSPENDED; |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 421 | dev->power.power_state = PMSG_SUSPEND; |
| 422 | |
| 423 | /* ignore non-host interrupts */ |
| 424 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 425 | |
| 426 | /* stop the controller */ |
| 427 | tmp = ehci_readl(ehci, &ehci->regs->command); |
| 428 | tmp &= ~CMD_RUN; |
| 429 | ehci_writel(ehci, tmp, &ehci->regs->command); |
| 430 | |
| 431 | /* save EHCI registers */ |
| 432 | pdata->pm_command = ehci_readl(ehci, &ehci->regs->command); |
| 433 | pdata->pm_command &= ~CMD_RUN; |
| 434 | pdata->pm_status = ehci_readl(ehci, &ehci->regs->status); |
| 435 | pdata->pm_intr_enable = ehci_readl(ehci, &ehci->regs->intr_enable); |
| 436 | pdata->pm_frame_index = ehci_readl(ehci, &ehci->regs->frame_index); |
| 437 | pdata->pm_segment = ehci_readl(ehci, &ehci->regs->segment); |
| 438 | pdata->pm_frame_list = ehci_readl(ehci, &ehci->regs->frame_list); |
| 439 | pdata->pm_async_next = ehci_readl(ehci, &ehci->regs->async_next); |
| 440 | pdata->pm_configured_flag = |
| 441 | ehci_readl(ehci, &ehci->regs->configured_flag); |
| 442 | pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]); |
| 443 | pdata->pm_usbgenctrl = ehci_readl(ehci, |
| 444 | hcd->regs + FSL_SOC_USB_USBGENCTRL); |
| 445 | |
| 446 | /* clear the W1C bits */ |
| 447 | pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS); |
| 448 | |
| 449 | pdata->suspended = 1; |
| 450 | |
| 451 | /* clear PP to cut power to the port */ |
| 452 | tmp = ehci_readl(ehci, &ehci->regs->port_status[0]); |
| 453 | tmp &= ~PORT_POWER; |
| 454 | ehci_writel(ehci, tmp, &ehci->regs->port_status[0]); |
| 455 | |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | static int ehci_fsl_mpc512x_drv_resume(struct device *dev) |
| 460 | { |
| 461 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 462 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 463 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 464 | u32 tmp; |
| 465 | |
| 466 | dev_dbg(dev, "suspend=%d already_suspended=%d\n", |
| 467 | pdata->suspended, pdata->already_suspended); |
| 468 | |
| 469 | /* |
| 470 | * If the controller was already suspended at suspend time, |
| 471 | * then don't resume it now. |
| 472 | */ |
| 473 | if (pdata->already_suspended) { |
| 474 | dev_dbg(dev, "already suspended, leaving early\n"); |
| 475 | pdata->already_suspended = 0; |
| 476 | return 0; |
| 477 | } |
| 478 | |
| 479 | if (!pdata->suspended) { |
| 480 | dev_dbg(dev, "not suspended, leaving early\n"); |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | pdata->suspended = 0; |
| 485 | |
| 486 | dev_dbg(dev, "resuming...\n"); |
| 487 | |
| 488 | /* set host mode */ |
| 489 | tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0); |
| 490 | ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE); |
| 491 | |
| 492 | ehci_writel(ehci, pdata->pm_usbgenctrl, |
| 493 | hcd->regs + FSL_SOC_USB_USBGENCTRL); |
| 494 | ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE, |
| 495 | hcd->regs + FSL_SOC_USB_ISIPHYCTRL); |
| 496 | |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 497 | ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG); |
| 498 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 499 | /* restore EHCI registers */ |
| 500 | ehci_writel(ehci, pdata->pm_command, &ehci->regs->command); |
| 501 | ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable); |
| 502 | ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index); |
| 503 | ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment); |
| 504 | ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list); |
| 505 | ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next); |
| 506 | ehci_writel(ehci, pdata->pm_configured_flag, |
| 507 | &ehci->regs->configured_flag); |
| 508 | ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]); |
| 509 | |
| 510 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
Alan Stern | e879990 | 2011-08-18 16:31:30 -0400 | [diff] [blame] | 511 | ehci->rh_state = EHCI_RH_RUNNING; |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 512 | dev->power.power_state = PMSG_ON; |
| 513 | |
| 514 | tmp = ehci_readl(ehci, &ehci->regs->command); |
| 515 | tmp |= CMD_RUN; |
| 516 | ehci_writel(ehci, tmp, &ehci->regs->command); |
| 517 | |
| 518 | usb_hcd_resume_root_hub(hcd); |
| 519 | |
| 520 | return 0; |
| 521 | } |
| 522 | #else |
| 523 | static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev) |
| 524 | { |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev) |
| 529 | { |
| 530 | return 0; |
| 531 | } |
| 532 | #endif /* CONFIG_PPC_MPC512x */ |
| 533 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 534 | static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd) |
| 535 | { |
| 536 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 537 | |
| 538 | return container_of(ehci, struct ehci_fsl, ehci); |
| 539 | } |
| 540 | |
| 541 | static int ehci_fsl_drv_suspend(struct device *dev) |
| 542 | { |
| 543 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 544 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); |
| 545 | void __iomem *non_ehci = hcd->regs; |
| 546 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 547 | if (of_device_is_compatible(dev->parent->of_node, |
| 548 | "fsl,mpc5121-usb2-dr")) { |
| 549 | return ehci_fsl_mpc512x_drv_suspend(dev); |
| 550 | } |
| 551 | |
Alan Stern | 4147200 | 2010-06-25 14:02:14 -0400 | [diff] [blame] | 552 | ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), |
| 553 | device_may_wakeup(dev)); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 554 | if (!fsl_deep_sleep()) |
| 555 | return 0; |
| 556 | |
| 557 | ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL); |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | static int ehci_fsl_drv_resume(struct device *dev) |
| 562 | { |
| 563 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 564 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); |
| 565 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 566 | void __iomem *non_ehci = hcd->regs; |
| 567 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 568 | if (of_device_is_compatible(dev->parent->of_node, |
| 569 | "fsl,mpc5121-usb2-dr")) { |
| 570 | return ehci_fsl_mpc512x_drv_resume(dev); |
| 571 | } |
| 572 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 573 | ehci_prepare_ports_for_controller_resume(ehci); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 574 | if (!fsl_deep_sleep()) |
| 575 | return 0; |
| 576 | |
| 577 | usb_root_hub_lost_power(hcd->self.root_hub); |
| 578 | |
| 579 | /* Restore USB PHY settings and enable the controller. */ |
| 580 | out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl); |
| 581 | |
| 582 | ehci_reset(ehci); |
| 583 | ehci_fsl_reinit(ehci); |
| 584 | |
| 585 | return 0; |
| 586 | } |
| 587 | |
| 588 | static int ehci_fsl_drv_restore(struct device *dev) |
| 589 | { |
| 590 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 591 | |
| 592 | usb_root_hub_lost_power(hcd->self.root_hub); |
| 593 | return 0; |
| 594 | } |
| 595 | |
| 596 | static struct dev_pm_ops ehci_fsl_pm_ops = { |
| 597 | .suspend = ehci_fsl_drv_suspend, |
| 598 | .resume = ehci_fsl_drv_resume, |
| 599 | .restore = ehci_fsl_drv_restore, |
| 600 | }; |
| 601 | |
| 602 | #define EHCI_FSL_PM_OPS (&ehci_fsl_pm_ops) |
| 603 | #else |
| 604 | #define EHCI_FSL_PM_OPS NULL |
| 605 | #endif /* CONFIG_PM */ |
| 606 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 607 | #ifdef CONFIG_USB_OTG |
| 608 | static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port) |
| 609 | { |
| 610 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 611 | u32 status; |
| 612 | |
| 613 | if (!port) |
| 614 | return -EINVAL; |
| 615 | |
| 616 | port--; |
| 617 | |
| 618 | /* start port reset before HNP protocol time out */ |
| 619 | status = readl(&ehci->regs->port_status[port]); |
| 620 | if (!(status & PORT_CONNECT)) |
| 621 | return -ENODEV; |
| 622 | |
Petr Mladek | 37ebb54 | 2014-09-19 17:32:23 +0200 | [diff] [blame] | 623 | /* hub_wq will finish the reset later */ |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 624 | if (ehci_is_TDI(ehci)) { |
| 625 | writel(PORT_RESET | |
| 626 | (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)), |
| 627 | &ehci->regs->port_status[port]); |
| 628 | } else { |
| 629 | writel(PORT_RESET, &ehci->regs->port_status[port]); |
| 630 | } |
| 631 | |
| 632 | return 0; |
| 633 | } |
| 634 | #else |
| 635 | #define ehci_start_port_reset NULL |
| 636 | #endif /* CONFIG_USB_OTG */ |
| 637 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 638 | static struct ehci_driver_overrides ehci_fsl_overrides __initdata = { |
| 639 | .extra_priv_size = sizeof(struct ehci_fsl), |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 640 | .reset = ehci_fsl_setup, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 641 | }; |
| 642 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 643 | /** |
| 644 | * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs |
| 645 | * @dev: USB Host Controller being removed |
| 646 | * Context: !in_interrupt() |
| 647 | * |
| 648 | * Reverses the effect of usb_hcd_fsl_probe(). |
| 649 | * |
| 650 | */ |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 651 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 652 | static int fsl_ehci_drv_remove(struct platform_device *pdev) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 653 | { |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 654 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 655 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 656 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 657 | if (!IS_ERR_OR_NULL(hcd->usb_phy)) { |
| 658 | otg_set_host(hcd->usb_phy->otg, NULL); |
| 659 | usb_put_phy(hcd->usb_phy); |
| 660 | } |
| 661 | |
| 662 | usb_remove_hcd(hcd); |
| 663 | |
| 664 | /* |
| 665 | * do platform specific un-initialization: |
| 666 | * release iomux pins, disable clock, etc. |
| 667 | */ |
| 668 | if (pdata->exit) |
| 669 | pdata->exit(pdev); |
| 670 | usb_put_hcd(hcd); |
| 671 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 672 | return 0; |
| 673 | } |
| 674 | |
Kumar Gala | 01cced2 | 2006-04-11 10:07:16 -0500 | [diff] [blame] | 675 | static struct platform_driver ehci_fsl_driver = { |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 676 | .probe = fsl_ehci_drv_probe, |
| 677 | .remove = fsl_ehci_drv_remove, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 678 | .shutdown = usb_hcd_platform_shutdown, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 679 | .driver = { |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 680 | .name = "fsl-ehci", |
| 681 | .pm = EHCI_FSL_PM_OPS, |
David Brownell | 135db04 | 2008-02-11 18:40:46 -0800 | [diff] [blame] | 682 | }, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 683 | }; |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 684 | |
| 685 | static int __init ehci_fsl_init(void) |
| 686 | { |
| 687 | if (usb_disabled()) |
| 688 | return -ENODEV; |
| 689 | |
| 690 | pr_info(DRV_NAME ": " DRIVER_DESC "\n"); |
| 691 | |
| 692 | ehci_init_driver(&fsl_ehci_hc_driver, &ehci_fsl_overrides); |
| 693 | |
| 694 | fsl_ehci_hc_driver.product_desc = |
| 695 | "Freescale On-Chip EHCI Host Controller"; |
| 696 | fsl_ehci_hc_driver.start_port_reset = ehci_start_port_reset; |
| 697 | |
| 698 | |
| 699 | return platform_driver_register(&ehci_fsl_driver); |
| 700 | } |
| 701 | module_init(ehci_fsl_init); |
| 702 | |
| 703 | static void __exit ehci_fsl_cleanup(void) |
| 704 | { |
| 705 | platform_driver_unregister(&ehci_fsl_driver); |
| 706 | } |
| 707 | module_exit(ehci_fsl_cleanup); |
| 708 | |
| 709 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 710 | MODULE_LICENSE("GPL"); |
| 711 | MODULE_ALIAS("platform:" DRV_NAME); |