Greg Kroah-Hartman | 5fd54ac | 2017-11-03 11:28:30 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 2 | /* |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 3 | * Copyright 2005-2009 MontaVista Software, Inc. |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 4 | * Copyright 2008,2012,2015 Freescale Semiconductor, Inc. |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 5 | * |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 6 | * Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided |
| 7 | * by Hunter Wu. |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 8 | * Power Management support by Dave Liu <daveliu@freescale.com>, |
| 9 | * Jerry Huang <Chang-Ming.Huang@freescale.com> and |
| 10 | * Anton Vorontsov <avorontsov@ru.mvista.com>. |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 11 | */ |
| 12 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 13 | #include <linux/kernel.h> |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 14 | #include <linux/module.h> |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 15 | #include <linux/types.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/pm.h> |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 18 | #include <linux/err.h> |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 19 | #include <linux/usb.h> |
| 20 | #include <linux/usb/ehci_def.h> |
| 21 | #include <linux/usb/hcd.h> |
| 22 | #include <linux/usb/otg.h> |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 23 | #include <linux/platform_device.h> |
| 24 | #include <linux/fsl_devices.h> |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 25 | #include <linux/of_platform.h> |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 26 | #include <linux/io.h> |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 27 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 28 | #include "ehci.h" |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 29 | #include "ehci-fsl.h" |
| 30 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 31 | #define DRIVER_DESC "Freescale EHCI Host controller driver" |
Alexander Stein | 5d3d01a | 2023-01-20 13:27:14 +0100 | [diff] [blame] | 32 | #define DRV_NAME "fsl-ehci" |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 33 | |
| 34 | static struct hc_driver __read_mostly fsl_ehci_hc_driver; |
| 35 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 36 | /* configure so an HC device and id are always provided */ |
| 37 | /* always called with process context; sleeping is OK */ |
| 38 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 39 | /* |
| 40 | * fsl_ehci_drv_probe - initialize FSL-based HCDs |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 41 | * @pdev: USB Host Controller being probed |
Ahmed S. Darwish | 19220ba | 2020-10-19 12:06:37 +0200 | [diff] [blame] | 42 | * |
| 43 | * Context: task context, might sleep |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 44 | * |
| 45 | * Allocates basic resources for this USB host controller. |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 46 | */ |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 47 | static int fsl_ehci_drv_probe(struct platform_device *pdev) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 48 | { |
| 49 | struct fsl_usb2_platform_data *pdata; |
| 50 | struct usb_hcd *hcd; |
| 51 | struct resource *res; |
| 52 | int irq; |
| 53 | int retval; |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 54 | u32 tmp; |
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 */ |
Jingoo Han | 37c3a3c | 2013-09-09 14:04:44 +0900 | [diff] [blame] | 59 | pdata = dev_get_platdata(&pdev->dev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 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 | |
Darren Stevens | bb160ee | 2022-07-02 22:03:55 +0100 | [diff] [blame] | 79 | irq = platform_get_irq(pdev, 0); |
| 80 | if (irq < 0) |
| 81 | return irq; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 82 | |
Arnd Bergmann | 8123e49 | 2017-03-13 10:18:43 +0800 | [diff] [blame] | 83 | hcd = __usb_create_hcd(&fsl_ehci_hc_driver, pdev->dev.parent, |
| 84 | &pdev->dev, dev_name(&pdev->dev), NULL); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 85 | if (!hcd) { |
| 86 | retval = -ENOMEM; |
| 87 | goto err1; |
| 88 | } |
| 89 | |
| 90 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 91 | hcd->regs = devm_ioremap_resource(&pdev->dev, res); |
| 92 | if (IS_ERR(hcd->regs)) { |
| 93 | retval = PTR_ERR(hcd->regs); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 94 | goto err2; |
| 95 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 96 | |
Varka Bhadram | ce98f54 | 2014-11-04 07:51:32 +0530 | [diff] [blame] | 97 | hcd->rsrc_start = res->start; |
| 98 | hcd->rsrc_len = resource_size(res); |
| 99 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 100 | pdata->regs = hcd->regs; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 101 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 102 | if (pdata->power_budget) |
| 103 | hcd->power_budget = pdata->power_budget; |
| 104 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 105 | /* |
| 106 | * do platform specific init: check the clock, grab/config pins, etc. |
| 107 | */ |
| 108 | if (pdata->init && pdata->init(pdev)) { |
| 109 | retval = -ENODEV; |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 110 | goto err2; |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 111 | } |
| 112 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 113 | /* Enable USB controller, 83xx or 8536 */ |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 114 | if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6) { |
| 115 | tmp = ioread32be(hcd->regs + FSL_SOC_USB_CTRL); |
| 116 | tmp &= ~CONTROL_REGISTER_W1C_MASK; |
| 117 | tmp |= 0x4; |
| 118 | iowrite32be(tmp, hcd->regs + FSL_SOC_USB_CTRL); |
| 119 | } |
Nikhil Badola | 4f18283 | 2019-06-24 15:22:15 +0800 | [diff] [blame] | 120 | |
| 121 | /* Set USB_EN bit to select ULPI phy for USB controller version 2.5 */ |
| 122 | if (pdata->controller_ver == FSL_USB_VER_2_5 && |
| 123 | pdata->phy_mode == FSL_USB2_PHY_ULPI) |
| 124 | iowrite32be(USB_CTRL_USB_EN, hcd->regs + FSL_SOC_USB_CTRL); |
| 125 | |
Nikhil Badola | 523f1de | 2015-06-15 15:47:29 +0530 | [diff] [blame] | 126 | /* |
| 127 | * Enable UTMI phy and program PTS field in UTMI mode before asserting |
| 128 | * controller reset for USB Controller version 2.5 |
| 129 | */ |
| 130 | if (pdata->has_fsl_erratum_a007792) { |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 131 | tmp = ioread32be(hcd->regs + FSL_SOC_USB_CTRL); |
| 132 | tmp &= ~CONTROL_REGISTER_W1C_MASK; |
| 133 | tmp |= CTRL_UTMI_PHY_EN; |
| 134 | iowrite32be(tmp, hcd->regs + FSL_SOC_USB_CTRL); |
| 135 | |
Nikhil Badola | 523f1de | 2015-06-15 15:47:29 +0530 | [diff] [blame] | 136 | writel(PORT_PTS_UTMI, hcd->regs + FSL_SOC_USB_PORTSC1); |
| 137 | } |
| 138 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 139 | /* 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] | 140 | |
Yong Zhang | b5dd18d | 2011-09-07 16:10:52 +0800 | [diff] [blame] | 141 | retval = usb_add_hcd(hcd, irq, IRQF_SHARED); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 142 | if (retval != 0) |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 143 | goto err2; |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 144 | device_wakeup_enable(hcd->self.controller); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 145 | |
| 146 | #ifdef CONFIG_USB_OTG |
| 147 | if (pdata->operating_mode == FSL_USB2_DR_OTG) { |
| 148 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 149 | |
Antoine Tenart | 3d46e73 | 2014-09-24 23:05:50 +0400 | [diff] [blame] | 150 | hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2); |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 151 | 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] | 152 | hcd, ehci, hcd->usb_phy); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 153 | |
Antoine Tenart | 3d46e73 | 2014-09-24 23:05:50 +0400 | [diff] [blame] | 154 | if (!IS_ERR_OR_NULL(hcd->usb_phy)) { |
| 155 | retval = otg_set_host(hcd->usb_phy->otg, |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 156 | &ehci_to_hcd(ehci)->self); |
| 157 | if (retval) { |
Antoine Tenart | 3d46e73 | 2014-09-24 23:05:50 +0400 | [diff] [blame] | 158 | usb_put_phy(hcd->usb_phy); |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 159 | goto err2; |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 160 | } |
| 161 | } else { |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 162 | dev_err(&pdev->dev, "can't find phy\n"); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 163 | retval = -ENODEV; |
Jingoo Han | 7667fe6 | 2013-12-11 16:18:53 +0900 | [diff] [blame] | 164 | goto err2; |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 165 | } |
Martin Blumenstingl | 4e88d4c | 2018-03-03 22:43:03 +0100 | [diff] [blame] | 166 | |
| 167 | hcd->skip_phy_initialization = 1; |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 168 | } |
| 169 | #endif |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 170 | return retval; |
| 171 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 172 | err2: |
| 173 | usb_put_hcd(hcd); |
| 174 | err1: |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 175 | 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] | 176 | if (pdata->exit) |
| 177 | pdata->exit(pdev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 178 | return retval; |
| 179 | } |
| 180 | |
Suresh Gupta | 5dfff99 | 2019-06-24 15:22:16 +0800 | [diff] [blame] | 181 | static bool usb_phy_clk_valid(struct usb_hcd *hcd) |
| 182 | { |
| 183 | void __iomem *non_ehci = hcd->regs; |
| 184 | bool ret = true; |
| 185 | |
| 186 | if (!(ioread32be(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID)) |
| 187 | ret = false; |
| 188 | |
| 189 | return ret; |
| 190 | } |
| 191 | |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 192 | static int ehci_fsl_setup_phy(struct usb_hcd *hcd, |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 193 | enum fsl_usb2_phy_modes phy_mode, |
| 194 | unsigned int port_offset) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 195 | { |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 196 | u32 portsc, tmp; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 197 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Shengzhou Liu | 28c56ea | 2012-02-16 18:02:20 +0800 | [diff] [blame] | 198 | void __iomem *non_ehci = hcd->regs; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 199 | struct device *dev = hcd->self.controller; |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 200 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); |
Anatolij Gustschin | f941f69 | 2012-04-10 10:48:11 +0200 | [diff] [blame] | 201 | |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 202 | if (pdata->controller_ver < 0) { |
| 203 | dev_warn(hcd->self.controller, "Could not get controller version\n"); |
Ben Collins | d479c91 | 2012-10-19 10:24:12 -0400 | [diff] [blame] | 204 | return -ENODEV; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 205 | } |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 206 | |
| 207 | portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]); |
| 208 | portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW); |
| 209 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 210 | switch (phy_mode) { |
| 211 | case FSL_USB2_PHY_ULPI: |
Anatolij Gustschin | f66dea7 | 2012-12-04 14:24:30 +0100 | [diff] [blame] | 212 | if (pdata->have_sysif_regs && pdata->controller_ver) { |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 213 | /* controller version 1.6 or above */ |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 214 | /* turn off UTMI PHY first */ |
| 215 | tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); |
| 216 | tmp &= ~(CONTROL_REGISTER_W1C_MASK | UTMI_PHY_EN); |
| 217 | iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); |
| 218 | |
| 219 | /* then turn on ULPI and enable USB controller */ |
| 220 | tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); |
| 221 | tmp &= ~CONTROL_REGISTER_W1C_MASK; |
| 222 | tmp |= ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN; |
| 223 | iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 224 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 225 | portsc |= PORT_PTS_ULPI; |
| 226 | break; |
| 227 | case FSL_USB2_PHY_SERIAL: |
| 228 | portsc |= PORT_PTS_SERIAL; |
| 229 | break; |
| 230 | case FSL_USB2_PHY_UTMI_WIDE: |
| 231 | portsc |= PORT_PTS_PTW; |
Gustavo A. R. Silva | 8b84724 | 2020-07-07 14:50:23 -0500 | [diff] [blame] | 232 | fallthrough; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 233 | case FSL_USB2_PHY_UTMI: |
Ramneek Mehresh | c1f9d2e | 2019-06-24 15:22:18 +0800 | [diff] [blame] | 234 | /* Presence of this node "has_fsl_erratum_a006918" |
| 235 | * in device-tree is used to stop USB controller |
| 236 | * initialization in Linux |
| 237 | */ |
| 238 | if (pdata->has_fsl_erratum_a006918) { |
| 239 | dev_warn(dev, "USB PHY clock invalid\n"); |
| 240 | return -EINVAL; |
| 241 | } |
Gustavo A. R. Silva | 8b84724 | 2020-07-07 14:50:23 -0500 | [diff] [blame] | 242 | fallthrough; |
Nikhil Badola | 6009d95 | 2015-06-15 15:48:22 +0530 | [diff] [blame] | 243 | case FSL_USB2_PHY_UTMI_DUAL: |
Suresh Gupta | 5dfff99 | 2019-06-24 15:22:16 +0800 | [diff] [blame] | 244 | /* PHY_CLK_VALID bit is de-featured from all controller |
| 245 | * versions below 2.4 and is to be checked only for |
| 246 | * internal UTMI phy |
| 247 | */ |
| 248 | if (pdata->controller_ver > FSL_USB_VER_2_4 && |
| 249 | pdata->have_sysif_regs && !usb_phy_clk_valid(hcd)) { |
| 250 | dev_err(dev, "USB PHY clock invalid\n"); |
| 251 | return -EINVAL; |
| 252 | } |
| 253 | |
Anatolij Gustschin | f66dea7 | 2012-12-04 14:24:30 +0100 | [diff] [blame] | 254 | if (pdata->have_sysif_regs && pdata->controller_ver) { |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 255 | /* controller version 1.6 or above */ |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 256 | tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); |
| 257 | tmp &= ~CONTROL_REGISTER_W1C_MASK; |
| 258 | tmp |= UTMI_PHY_EN; |
| 259 | iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); |
| 260 | |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 261 | mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI PHY CLK to |
| 262 | become stable - 10ms*/ |
| 263 | } |
Shengzhou Liu | 28c56ea | 2012-02-16 18:02:20 +0800 | [diff] [blame] | 264 | /* enable UTMI PHY */ |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 265 | if (pdata->have_sysif_regs) { |
| 266 | tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); |
| 267 | tmp &= ~CONTROL_REGISTER_W1C_MASK; |
| 268 | tmp |= CTRL_UTMI_PHY_EN; |
| 269 | iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); |
| 270 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 271 | portsc |= PORT_PTS_UTMI; |
| 272 | break; |
| 273 | case FSL_USB2_PHY_NONE: |
| 274 | break; |
| 275 | } |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 276 | |
Suresh Gupta | 5dfff99 | 2019-06-24 15:22:16 +0800 | [diff] [blame] | 277 | if (pdata->have_sysif_regs && |
| 278 | pdata->controller_ver > FSL_USB_VER_1_6 && |
| 279 | !usb_phy_clk_valid(hcd)) { |
| 280 | dev_warn(hcd->self.controller, "USB PHY clock invalid\n"); |
| 281 | return -EINVAL; |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 282 | } |
| 283 | |
Benjamin Herrenschmidt | 083522d | 2006-12-15 06:54:08 +1100 | [diff] [blame] | 284 | ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]); |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 285 | |
Ran Wang | 972a34e | 2019-01-17 09:10:50 +0000 | [diff] [blame] | 286 | if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs) { |
| 287 | tmp = ioread32be(non_ehci + FSL_SOC_USB_CTRL); |
| 288 | tmp &= ~CONTROL_REGISTER_W1C_MASK; |
| 289 | tmp |= USB_CTRL_USB_EN; |
| 290 | iowrite32be(tmp, non_ehci + FSL_SOC_USB_CTRL); |
| 291 | } |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 292 | |
| 293 | return 0; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 294 | } |
| 295 | |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 296 | static int ehci_fsl_usb_setup(struct ehci_hcd *ehci) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 297 | { |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 298 | struct usb_hcd *hcd = ehci_to_hcd(ehci); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 299 | struct fsl_usb2_platform_data *pdata; |
| 300 | void __iomem *non_ehci = hcd->regs; |
| 301 | |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 302 | pdata = dev_get_platdata(hcd->self.controller); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 303 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 304 | if (pdata->have_sysif_regs) { |
Pan Jiafei | 4c95432 | 2012-02-17 13:57:16 +0800 | [diff] [blame] | 305 | /* |
| 306 | * Turn on cache snooping hardware, since some PowerPC platforms |
| 307 | * wholly rely on hardware to deal with cache coherent |
| 308 | */ |
| 309 | |
| 310 | /* Setup Snooping for all the 4GB space */ |
| 311 | /* SNOOP1 starts from 0x0, size 2G */ |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 312 | iowrite32be(0x0 | SNOOP_SIZE_2GB, |
| 313 | non_ehci + FSL_SOC_USB_SNOOP1); |
Pan Jiafei | 4c95432 | 2012-02-17 13:57:16 +0800 | [diff] [blame] | 314 | /* SNOOP2 starts from 0x80000000, size 2G */ |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 315 | iowrite32be(0x80000000 | SNOOP_SIZE_2GB, |
| 316 | non_ehci + FSL_SOC_USB_SNOOP2); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 317 | } |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 318 | |
Nikhil Badola | f8786a9 | 2015-08-06 14:51:27 +0530 | [diff] [blame] | 319 | /* Deal with USB erratum A-005275 */ |
| 320 | if (pdata->has_fsl_erratum_a005275 == 1) |
| 321 | ehci->has_fsl_hs_errata = 1; |
| 322 | |
Changming Huang | 9d4b827 | 2016-11-29 13:45:38 +0800 | [diff] [blame] | 323 | if (pdata->has_fsl_erratum_a005697 == 1) |
| 324 | ehci->has_fsl_susp_errata = 1; |
| 325 | |
Li Yang | ba02978 | 2007-05-11 17:09:55 +0800 | [diff] [blame] | 326 | if ((pdata->operating_mode == FSL_USB2_DR_HOST) || |
| 327 | (pdata->operating_mode == FSL_USB2_DR_OTG)) |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 328 | if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) |
| 329 | return -EINVAL; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 330 | |
| 331 | if (pdata->operating_mode == FSL_USB2_MPH_HOST) { |
Kumar Gala | 8cd42e9 | 2006-01-20 13:57:52 -0800 | [diff] [blame] | 332 | |
| 333 | /* Deal with USB Erratum #14 on MPC834x Rev 1.0 & 1.1 chips */ |
Ran Wang | 5f620bb | 2019-01-17 09:10:55 +0000 | [diff] [blame] | 334 | if (pdata->has_fsl_erratum_14 == 1) |
Kumar Gala | 8cd42e9 | 2006-01-20 13:57:52 -0800 | [diff] [blame] | 335 | ehci->has_fsl_port_bug = 1; |
| 336 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 337 | if (pdata->port_enables & FSL_USB2_PORT0_ENABLED) |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 338 | if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0)) |
| 339 | return -EINVAL; |
| 340 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 341 | if (pdata->port_enables & FSL_USB2_PORT1_ENABLED) |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 342 | if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 1)) |
| 343 | return -EINVAL; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 344 | } |
| 345 | |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 346 | if (pdata->have_sysif_regs) { |
Kumar Gala | 08d7660 | 2012-07-10 06:58:48 -0500 | [diff] [blame] | 347 | #ifdef CONFIG_FSL_SOC_BOOKE |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 348 | iowrite32be(0x00000008, non_ehci + FSL_SOC_USB_PRICTRL); |
| 349 | iowrite32be(0x00000080, non_ehci + FSL_SOC_USB_AGECNTTHRSH); |
Srikanth Srinivasan | 4f53425 | 2008-07-02 02:14:33 -0500 | [diff] [blame] | 350 | #else |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 351 | iowrite32be(0x0000000c, non_ehci + FSL_SOC_USB_PRICTRL); |
| 352 | iowrite32be(0x00000040, non_ehci + FSL_SOC_USB_AGECNTTHRSH); |
Srikanth Srinivasan | 4f53425 | 2008-07-02 02:14:33 -0500 | [diff] [blame] | 353 | #endif |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 354 | iowrite32be(0x00000001, non_ehci + FSL_SOC_USB_SICTRL); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 355 | } |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 356 | |
| 357 | return 0; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | /* called after powerup, by probe or system-pm "wakeup" */ |
| 361 | static int ehci_fsl_reinit(struct ehci_hcd *ehci) |
| 362 | { |
Shengzhou Liu | 3735ba8 | 2012-08-22 18:17:00 +0800 | [diff] [blame] | 363 | if (ehci_fsl_usb_setup(ehci)) |
| 364 | return -EINVAL; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 365 | |
| 366 | return 0; |
| 367 | } |
| 368 | |
| 369 | /* called during probe() after chip reset completes */ |
| 370 | static int ehci_fsl_setup(struct usb_hcd *hcd) |
| 371 | { |
| 372 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 373 | int retval; |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 374 | struct fsl_usb2_platform_data *pdata; |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 375 | struct device *dev; |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 376 | |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 377 | dev = hcd->self.controller; |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 378 | pdata = dev_get_platdata(hcd->self.controller); |
Anatolij Gustschin | 230f7ed | 2010-09-28 20:55:21 +0200 | [diff] [blame] | 379 | ehci->big_endian_desc = pdata->big_endian_desc; |
| 380 | ehci->big_endian_mmio = pdata->big_endian_mmio; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 381 | |
| 382 | /* EHCI registers start at offset 0x100 */ |
| 383 | ehci->caps = hcd->regs + 0x100; |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 384 | |
Gopalakrishnan Santhanam | 0057758 | 2021-05-13 14:02:25 +0530 | [diff] [blame] | 385 | #if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_85xx) |
Christian Engelmayer | e6604a7 | 2013-04-03 12:18:51 +0200 | [diff] [blame] | 386 | /* |
Gopalakrishnan Santhanam | 0057758 | 2021-05-13 14:02:25 +0530 | [diff] [blame] | 387 | * Deal with MPC834X/85XX that need port power to be cycled |
| 388 | * after the power fault condition is removed. Otherwise the |
| 389 | * state machine does not reflect PORTSC[CSC] correctly. |
Christian Engelmayer | e6604a7 | 2013-04-03 12:18:51 +0200 | [diff] [blame] | 390 | */ |
| 391 | ehci->need_oc_pp_cycle = 1; |
| 392 | #endif |
| 393 | |
Matthieu CASTET | 65fd427 | 2010-09-06 18:26:56 +0200 | [diff] [blame] | 394 | hcd->has_tt = 1; |
| 395 | |
Alan Stern | 1a49e2a | 2012-07-09 15:55:14 -0400 | [diff] [blame] | 396 | retval = ehci_setup(hcd); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 397 | if (retval) |
| 398 | return retval; |
| 399 | |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 400 | if (of_device_is_compatible(dev->parent->of_node, |
| 401 | "fsl,mpc5121-usb2-dr")) { |
| 402 | /* |
| 403 | * set SBUSCFG:AHBBRST so that control msgs don't |
| 404 | * fail when doing heavy PATA writes. |
| 405 | */ |
| 406 | ehci_writel(ehci, SBUSCFG_INCR8, |
| 407 | hcd->regs + FSL_SOC_USB_SBUSCFG); |
| 408 | } |
| 409 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 410 | retval = ehci_fsl_reinit(ehci); |
| 411 | return retval; |
| 412 | } |
| 413 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 414 | struct ehci_fsl { |
| 415 | struct ehci_hcd ehci; |
| 416 | |
| 417 | #ifdef CONFIG_PM |
| 418 | /* Saved USB PHY settings, need to restore after deep sleep. */ |
| 419 | u32 usb_ctrl; |
| 420 | #endif |
| 421 | }; |
| 422 | |
| 423 | #ifdef CONFIG_PM |
| 424 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 425 | #ifdef CONFIG_PPC_MPC512x |
| 426 | static int ehci_fsl_mpc512x_drv_suspend(struct device *dev) |
| 427 | { |
| 428 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 429 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 430 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 431 | u32 tmp; |
| 432 | |
Oliver Neukum | 1c20163 | 2013-11-18 13:23:16 +0100 | [diff] [blame] | 433 | #ifdef CONFIG_DYNAMIC_DEBUG |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 434 | u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE); |
| 435 | mode &= USBMODE_CM_MASK; |
| 436 | tmp = ehci_readl(ehci, hcd->regs + 0x140); /* usbcmd */ |
| 437 | |
| 438 | dev_dbg(dev, "suspend=%d already_suspended=%d " |
| 439 | "mode=%d usbcmd %08x\n", pdata->suspended, |
| 440 | pdata->already_suspended, mode, tmp); |
| 441 | #endif |
| 442 | |
| 443 | /* |
| 444 | * If the controller is already suspended, then this must be a |
| 445 | * PM suspend. Remember this fact, so that we will leave the |
| 446 | * controller suspended at PM resume time. |
| 447 | */ |
| 448 | if (pdata->suspended) { |
| 449 | dev_dbg(dev, "already suspended, leaving early\n"); |
| 450 | pdata->already_suspended = 1; |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | dev_dbg(dev, "suspending...\n"); |
| 455 | |
Alan Stern | e879990 | 2011-08-18 16:31:30 -0400 | [diff] [blame] | 456 | ehci->rh_state = EHCI_RH_SUSPENDED; |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 457 | dev->power.power_state = PMSG_SUSPEND; |
| 458 | |
| 459 | /* ignore non-host interrupts */ |
| 460 | clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
| 461 | |
| 462 | /* stop the controller */ |
| 463 | tmp = ehci_readl(ehci, &ehci->regs->command); |
| 464 | tmp &= ~CMD_RUN; |
| 465 | ehci_writel(ehci, tmp, &ehci->regs->command); |
| 466 | |
| 467 | /* save EHCI registers */ |
| 468 | pdata->pm_command = ehci_readl(ehci, &ehci->regs->command); |
| 469 | pdata->pm_command &= ~CMD_RUN; |
| 470 | pdata->pm_status = ehci_readl(ehci, &ehci->regs->status); |
| 471 | pdata->pm_intr_enable = ehci_readl(ehci, &ehci->regs->intr_enable); |
| 472 | pdata->pm_frame_index = ehci_readl(ehci, &ehci->regs->frame_index); |
| 473 | pdata->pm_segment = ehci_readl(ehci, &ehci->regs->segment); |
| 474 | pdata->pm_frame_list = ehci_readl(ehci, &ehci->regs->frame_list); |
| 475 | pdata->pm_async_next = ehci_readl(ehci, &ehci->regs->async_next); |
| 476 | pdata->pm_configured_flag = |
| 477 | ehci_readl(ehci, &ehci->regs->configured_flag); |
| 478 | pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]); |
| 479 | pdata->pm_usbgenctrl = ehci_readl(ehci, |
| 480 | hcd->regs + FSL_SOC_USB_USBGENCTRL); |
| 481 | |
| 482 | /* clear the W1C bits */ |
| 483 | pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS); |
| 484 | |
| 485 | pdata->suspended = 1; |
| 486 | |
| 487 | /* clear PP to cut power to the port */ |
| 488 | tmp = ehci_readl(ehci, &ehci->regs->port_status[0]); |
| 489 | tmp &= ~PORT_POWER; |
| 490 | ehci_writel(ehci, tmp, &ehci->regs->port_status[0]); |
| 491 | |
| 492 | return 0; |
| 493 | } |
| 494 | |
| 495 | static int ehci_fsl_mpc512x_drv_resume(struct device *dev) |
| 496 | { |
| 497 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 498 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 499 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(dev); |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 500 | u32 tmp; |
| 501 | |
| 502 | dev_dbg(dev, "suspend=%d already_suspended=%d\n", |
| 503 | pdata->suspended, pdata->already_suspended); |
| 504 | |
| 505 | /* |
| 506 | * If the controller was already suspended at suspend time, |
| 507 | * then don't resume it now. |
| 508 | */ |
| 509 | if (pdata->already_suspended) { |
| 510 | dev_dbg(dev, "already suspended, leaving early\n"); |
| 511 | pdata->already_suspended = 0; |
| 512 | return 0; |
| 513 | } |
| 514 | |
| 515 | if (!pdata->suspended) { |
| 516 | dev_dbg(dev, "not suspended, leaving early\n"); |
| 517 | return 0; |
| 518 | } |
| 519 | |
| 520 | pdata->suspended = 0; |
| 521 | |
| 522 | dev_dbg(dev, "resuming...\n"); |
| 523 | |
| 524 | /* set host mode */ |
| 525 | tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0); |
| 526 | ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE); |
| 527 | |
| 528 | ehci_writel(ehci, pdata->pm_usbgenctrl, |
| 529 | hcd->regs + FSL_SOC_USB_USBGENCTRL); |
| 530 | ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE, |
| 531 | hcd->regs + FSL_SOC_USB_ISIPHYCTRL); |
| 532 | |
Anatolij Gustschin | 761bbcb | 2012-01-24 22:17:38 +0100 | [diff] [blame] | 533 | ehci_writel(ehci, SBUSCFG_INCR8, hcd->regs + FSL_SOC_USB_SBUSCFG); |
| 534 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 535 | /* restore EHCI registers */ |
| 536 | ehci_writel(ehci, pdata->pm_command, &ehci->regs->command); |
| 537 | ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable); |
| 538 | ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index); |
| 539 | ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment); |
| 540 | ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list); |
| 541 | ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next); |
| 542 | ehci_writel(ehci, pdata->pm_configured_flag, |
| 543 | &ehci->regs->configured_flag); |
| 544 | ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]); |
| 545 | |
| 546 | set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); |
Alan Stern | e879990 | 2011-08-18 16:31:30 -0400 | [diff] [blame] | 547 | ehci->rh_state = EHCI_RH_RUNNING; |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 548 | dev->power.power_state = PMSG_ON; |
| 549 | |
| 550 | tmp = ehci_readl(ehci, &ehci->regs->command); |
| 551 | tmp |= CMD_RUN; |
| 552 | ehci_writel(ehci, tmp, &ehci->regs->command); |
| 553 | |
| 554 | usb_hcd_resume_root_hub(hcd); |
| 555 | |
| 556 | return 0; |
| 557 | } |
| 558 | #else |
| 559 | static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev) |
| 560 | { |
| 561 | return 0; |
| 562 | } |
| 563 | |
| 564 | static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev) |
| 565 | { |
| 566 | return 0; |
| 567 | } |
| 568 | #endif /* CONFIG_PPC_MPC512x */ |
| 569 | |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 570 | static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd) |
| 571 | { |
| 572 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 573 | |
| 574 | return container_of(ehci, struct ehci_fsl, ehci); |
| 575 | } |
| 576 | |
| 577 | static int ehci_fsl_drv_suspend(struct device *dev) |
| 578 | { |
| 579 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 580 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); |
| 581 | void __iomem *non_ehci = hcd->regs; |
| 582 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 583 | if (of_device_is_compatible(dev->parent->of_node, |
| 584 | "fsl,mpc5121-usb2-dr")) { |
| 585 | return ehci_fsl_mpc512x_drv_suspend(dev); |
| 586 | } |
| 587 | |
Alan Stern | 4147200 | 2010-06-25 14:02:14 -0400 | [diff] [blame] | 588 | ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), |
| 589 | device_may_wakeup(dev)); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 590 | if (!fsl_deep_sleep()) |
| 591 | return 0; |
| 592 | |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 593 | ehci_fsl->usb_ctrl = ioread32be(non_ehci + FSL_SOC_USB_CTRL); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | static int ehci_fsl_drv_resume(struct device *dev) |
| 598 | { |
| 599 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 600 | struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd); |
| 601 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 602 | void __iomem *non_ehci = hcd->regs; |
| 603 | |
Anatolij Gustschin | 13b7ee2a | 2011-04-18 22:01:55 +0200 | [diff] [blame] | 604 | if (of_device_is_compatible(dev->parent->of_node, |
| 605 | "fsl,mpc5121-usb2-dr")) { |
| 606 | return ehci_fsl_mpc512x_drv_resume(dev); |
| 607 | } |
| 608 | |
Alan Stern | 16032c4 | 2010-05-12 18:21:35 -0400 | [diff] [blame] | 609 | ehci_prepare_ports_for_controller_resume(ehci); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 610 | if (!fsl_deep_sleep()) |
| 611 | return 0; |
| 612 | |
| 613 | usb_root_hub_lost_power(hcd->self.root_hub); |
| 614 | |
| 615 | /* Restore USB PHY settings and enable the controller. */ |
Sriram Dash | 6f5429d | 2015-12-18 14:16:29 +0530 | [diff] [blame] | 616 | iowrite32be(ehci_fsl->usb_ctrl, non_ehci + FSL_SOC_USB_CTRL); |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 617 | |
| 618 | ehci_reset(ehci); |
| 619 | ehci_fsl_reinit(ehci); |
| 620 | |
| 621 | return 0; |
| 622 | } |
| 623 | |
| 624 | static int ehci_fsl_drv_restore(struct device *dev) |
| 625 | { |
| 626 | struct usb_hcd *hcd = dev_get_drvdata(dev); |
| 627 | |
| 628 | usb_root_hub_lost_power(hcd->self.root_hub); |
| 629 | return 0; |
| 630 | } |
| 631 | |
Bhumika Goyal | fd7723e | 2017-01-15 17:23:25 +0530 | [diff] [blame] | 632 | static const struct dev_pm_ops ehci_fsl_pm_ops = { |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 633 | .suspend = ehci_fsl_drv_suspend, |
| 634 | .resume = ehci_fsl_drv_resume, |
| 635 | .restore = ehci_fsl_drv_restore, |
| 636 | }; |
| 637 | |
| 638 | #define EHCI_FSL_PM_OPS (&ehci_fsl_pm_ops) |
| 639 | #else |
| 640 | #define EHCI_FSL_PM_OPS NULL |
| 641 | #endif /* CONFIG_PM */ |
| 642 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 643 | #ifdef CONFIG_USB_OTG |
| 644 | static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port) |
| 645 | { |
| 646 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 647 | u32 status; |
| 648 | |
| 649 | if (!port) |
| 650 | return -EINVAL; |
| 651 | |
| 652 | port--; |
| 653 | |
| 654 | /* start port reset before HNP protocol time out */ |
| 655 | status = readl(&ehci->regs->port_status[port]); |
| 656 | if (!(status & PORT_CONNECT)) |
| 657 | return -ENODEV; |
| 658 | |
Petr Mladek | 37ebb54 | 2014-09-19 17:32:23 +0200 | [diff] [blame] | 659 | /* hub_wq will finish the reset later */ |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 660 | if (ehci_is_TDI(ehci)) { |
| 661 | writel(PORT_RESET | |
| 662 | (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)), |
| 663 | &ehci->regs->port_status[port]); |
| 664 | } else { |
| 665 | writel(PORT_RESET, &ehci->regs->port_status[port]); |
| 666 | } |
| 667 | |
| 668 | return 0; |
| 669 | } |
| 670 | #else |
| 671 | #define ehci_start_port_reset NULL |
| 672 | #endif /* CONFIG_USB_OTG */ |
| 673 | |
Bhumika Goyal | b491f61 | 2017-08-30 14:35:25 +0530 | [diff] [blame] | 674 | static const struct ehci_driver_overrides ehci_fsl_overrides __initconst = { |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 675 | .extra_priv_size = sizeof(struct ehci_fsl), |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 676 | .reset = ehci_fsl_setup, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 677 | }; |
| 678 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 679 | /** |
| 680 | * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs |
Lee Jones | 1a89683 | 2020-07-06 14:33:26 +0100 | [diff] [blame] | 681 | * @pdev: USB Host Controller being removed |
Ahmed S. Darwish | 19220ba | 2020-10-19 12:06:37 +0200 | [diff] [blame] | 682 | * |
| 683 | * Context: task context, might sleep |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 684 | * |
| 685 | * Reverses the effect of usb_hcd_fsl_probe(). |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 686 | */ |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 687 | static int fsl_ehci_drv_remove(struct platform_device *pdev) |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 688 | { |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 689 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 690 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 691 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 692 | if (!IS_ERR_OR_NULL(hcd->usb_phy)) { |
| 693 | otg_set_host(hcd->usb_phy->otg, NULL); |
| 694 | usb_put_phy(hcd->usb_phy); |
| 695 | } |
| 696 | |
| 697 | usb_remove_hcd(hcd); |
| 698 | |
| 699 | /* |
| 700 | * do platform specific un-initialization: |
| 701 | * release iomux pins, disable clock, etc. |
| 702 | */ |
| 703 | if (pdata->exit) |
| 704 | pdata->exit(pdev); |
| 705 | usb_put_hcd(hcd); |
| 706 | |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 707 | return 0; |
| 708 | } |
| 709 | |
Kumar Gala | 01cced2 | 2006-04-11 10:07:16 -0500 | [diff] [blame] | 710 | static struct platform_driver ehci_fsl_driver = { |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 711 | .probe = fsl_ehci_drv_probe, |
| 712 | .remove = fsl_ehci_drv_remove, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 713 | .shutdown = usb_hcd_platform_shutdown, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 714 | .driver = { |
Anton Vorontsov | 1af1077 | 2009-12-14 18:41:12 +0300 | [diff] [blame] | 715 | .name = "fsl-ehci", |
| 716 | .pm = EHCI_FSL_PM_OPS, |
David Brownell | 135db04 | 2008-02-11 18:40:46 -0800 | [diff] [blame] | 717 | }, |
Randy Vinson | 80cb9ae | 2006-01-20 13:53:38 -0800 | [diff] [blame] | 718 | }; |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 719 | |
| 720 | static int __init ehci_fsl_init(void) |
| 721 | { |
| 722 | if (usb_disabled()) |
| 723 | return -ENODEV; |
| 724 | |
Ramneek Mehresh | ca07e1c | 2015-05-14 19:04:46 +0530 | [diff] [blame] | 725 | ehci_init_driver(&fsl_ehci_hc_driver, &ehci_fsl_overrides); |
| 726 | |
| 727 | fsl_ehci_hc_driver.product_desc = |
| 728 | "Freescale On-Chip EHCI Host Controller"; |
| 729 | fsl_ehci_hc_driver.start_port_reset = ehci_start_port_reset; |
| 730 | |
| 731 | |
| 732 | return platform_driver_register(&ehci_fsl_driver); |
| 733 | } |
| 734 | module_init(ehci_fsl_init); |
| 735 | |
| 736 | static void __exit ehci_fsl_cleanup(void) |
| 737 | { |
| 738 | platform_driver_unregister(&ehci_fsl_driver); |
| 739 | } |
| 740 | module_exit(ehci_fsl_cleanup); |
| 741 | |
| 742 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 743 | MODULE_LICENSE("GPL"); |
| 744 | MODULE_ALIAS("platform:" DRV_NAME); |