Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 1 | /* |
| 2 | * OHCI HCD (Host Controller Driver) for USB. |
| 3 | * |
| 4 | * Copyright (C) 2004 SAN People (Pty) Ltd. |
| 5 | * Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org> |
| 6 | * |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 7 | * AT91 Bus Glue |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 8 | * |
| 9 | * Based on fragments of 2.4 driver by Rick Bronson. |
| 10 | * Based on ohci-omap.c |
| 11 | * |
| 12 | * This file is licenced under the GPL. |
| 13 | */ |
| 14 | |
| 15 | #include <linux/clk.h> |
| 16 | #include <linux/platform_device.h> |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 17 | #include <linux/of_platform.h> |
| 18 | #include <linux/of_gpio.h> |
Jean-Christophe PLAGNIOL-VILLARD | bcd2360 | 2012-10-30 05:12:23 +0800 | [diff] [blame] | 19 | #include <linux/platform_data/atmel.h> |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 20 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 21 | #include <mach/hardware.h> |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 22 | #include <asm/gpio.h> |
| 23 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 24 | #include <mach/cpu.h> |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 25 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 26 | #ifndef CONFIG_ARCH_AT91 |
| 27 | #error "CONFIG_ARCH_AT91 must be defined." |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 28 | #endif |
| 29 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 30 | #define valid_port(index) ((index) >= 0 && (index) < AT91_MAX_USBH_PORTS) |
| 31 | #define at91_for_each_port(index) \ |
| 32 | for ((index) = 0; (index) < AT91_MAX_USBH_PORTS; (index)++) |
| 33 | |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 34 | /* interface and function clocks; sometimes also an AHB clock */ |
| 35 | static struct clk *iclk, *fclk, *hclk; |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 36 | static int clocked; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 37 | |
| 38 | extern int usb_disabled(void); |
| 39 | |
| 40 | /*-------------------------------------------------------------------------*/ |
| 41 | |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 42 | static void at91_start_clock(void) |
| 43 | { |
Boris BREZILLON | 8e82d8d | 2013-06-19 13:21:08 +0200 | [diff] [blame] | 44 | clk_prepare_enable(hclk); |
| 45 | clk_prepare_enable(iclk); |
| 46 | clk_prepare_enable(fclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 47 | clocked = 1; |
| 48 | } |
| 49 | |
| 50 | static void at91_stop_clock(void) |
| 51 | { |
Boris BREZILLON | 8e82d8d | 2013-06-19 13:21:08 +0200 | [diff] [blame] | 52 | clk_disable_unprepare(fclk); |
| 53 | clk_disable_unprepare(iclk); |
| 54 | clk_disable_unprepare(hclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 55 | clocked = 0; |
| 56 | } |
| 57 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 58 | static void at91_start_hc(struct platform_device *pdev) |
| 59 | { |
| 60 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 61 | struct ohci_regs __iomem *regs = hcd->regs; |
| 62 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 63 | dev_dbg(&pdev->dev, "start\n"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 64 | |
| 65 | /* |
| 66 | * Start the USB clocks. |
| 67 | */ |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 68 | at91_start_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 69 | |
| 70 | /* |
| 71 | * The USB host controller must remain in reset. |
| 72 | */ |
| 73 | writel(0, ®s->control); |
| 74 | } |
| 75 | |
| 76 | static void at91_stop_hc(struct platform_device *pdev) |
| 77 | { |
| 78 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 79 | struct ohci_regs __iomem *regs = hcd->regs; |
| 80 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 81 | dev_dbg(&pdev->dev, "stop\n"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 82 | |
| 83 | /* |
| 84 | * Put the USB host controller into reset. |
| 85 | */ |
| 86 | writel(0, ®s->control); |
| 87 | |
| 88 | /* |
| 89 | * Stop the USB clocks. |
| 90 | */ |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 91 | at91_stop_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | |
| 95 | /*-------------------------------------------------------------------------*/ |
| 96 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 97 | static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 98 | |
| 99 | /* configure so an HC device and id are always provided */ |
| 100 | /* always called with process context; sleeping is OK */ |
| 101 | |
| 102 | |
| 103 | /** |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 104 | * usb_hcd_at91_probe - initialize AT91-based HCDs |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 105 | * Context: !in_interrupt() |
| 106 | * |
| 107 | * Allocates basic resources for this USB host controller, and |
| 108 | * then invokes the start() method for the HCD associated with it |
| 109 | * through the hotplug entry's driver_data. |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 110 | */ |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 111 | static int usb_hcd_at91_probe(const struct hc_driver *driver, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 112 | struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 113 | { |
| 114 | int retval; |
| 115 | struct usb_hcd *hcd = NULL; |
| 116 | |
| 117 | if (pdev->num_resources != 2) { |
| 118 | pr_debug("hcd probe: invalid num_resources"); |
| 119 | return -ENODEV; |
| 120 | } |
| 121 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 122 | if ((pdev->resource[0].flags != IORESOURCE_MEM) |
| 123 | || (pdev->resource[1].flags != IORESOURCE_IRQ)) { |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 124 | pr_debug("hcd probe: invalid resource type\n"); |
| 125 | return -ENODEV; |
| 126 | } |
| 127 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 128 | hcd = usb_create_hcd(driver, &pdev->dev, "at91"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 129 | if (!hcd) |
| 130 | return -ENOMEM; |
| 131 | hcd->rsrc_start = pdev->resource[0].start; |
Nicolas Ferre | 7a82f61 | 2012-05-09 10:49:41 +0200 | [diff] [blame] | 132 | hcd->rsrc_len = resource_size(&pdev->resource[0]); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 133 | |
| 134 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| 135 | pr_debug("request_mem_region failed\n"); |
| 136 | retval = -EBUSY; |
| 137 | goto err1; |
| 138 | } |
| 139 | |
| 140 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 141 | if (!hcd->regs) { |
| 142 | pr_debug("ioremap failed\n"); |
| 143 | retval = -EIO; |
| 144 | goto err2; |
| 145 | } |
| 146 | |
| 147 | iclk = clk_get(&pdev->dev, "ohci_clk"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 148 | if (IS_ERR(iclk)) { |
| 149 | dev_err(&pdev->dev, "failed to get ohci_clk\n"); |
| 150 | retval = PTR_ERR(iclk); |
| 151 | goto err3; |
| 152 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 153 | fclk = clk_get(&pdev->dev, "uhpck"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 154 | if (IS_ERR(fclk)) { |
| 155 | dev_err(&pdev->dev, "failed to get uhpck\n"); |
| 156 | retval = PTR_ERR(fclk); |
| 157 | goto err4; |
| 158 | } |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 159 | hclk = clk_get(&pdev->dev, "hclk"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 160 | if (IS_ERR(hclk)) { |
| 161 | dev_err(&pdev->dev, "failed to get hclk\n"); |
| 162 | retval = PTR_ERR(hclk); |
| 163 | goto err5; |
| 164 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 165 | |
| 166 | at91_start_hc(pdev); |
| 167 | ohci_hcd_init(hcd_to_ohci(hcd)); |
| 168 | |
Nicolas Ferre | 2f2cac3 | 2009-07-27 14:59:24 -0700 | [diff] [blame] | 169 | retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 170 | if (retval == 0) |
| 171 | return retval; |
| 172 | |
| 173 | /* Error handling */ |
| 174 | at91_stop_hc(pdev); |
| 175 | |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 176 | clk_put(hclk); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 177 | err5: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 178 | clk_put(fclk); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 179 | err4: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 180 | clk_put(iclk); |
| 181 | |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 182 | err3: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 183 | iounmap(hcd->regs); |
| 184 | |
| 185 | err2: |
| 186 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 187 | |
| 188 | err1: |
| 189 | usb_put_hcd(hcd); |
| 190 | return retval; |
| 191 | } |
| 192 | |
| 193 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 194 | /* may be called with controller, bus, and devices active */ |
| 195 | |
| 196 | /** |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 197 | * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 198 | * @dev: USB Host Controller being removed |
| 199 | * Context: !in_interrupt() |
| 200 | * |
| 201 | * Reverses the effect of usb_hcd_at91_probe(), first invoking |
| 202 | * the HCD's stop() method. It is always called from a thread |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 203 | * context, "rmmod" or something similar. |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 204 | * |
| 205 | */ |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 206 | static void usb_hcd_at91_remove(struct usb_hcd *hcd, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 207 | struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 208 | { |
| 209 | usb_remove_hcd(hcd); |
| 210 | at91_stop_hc(pdev); |
| 211 | iounmap(hcd->regs); |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 212 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
Pete Zaitcev | 421b4bf | 2008-06-01 14:38:43 -0700 | [diff] [blame] | 213 | usb_put_hcd(hcd); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 214 | |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 215 | clk_put(hclk); |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 216 | clk_put(fclk); |
| 217 | clk_put(iclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 218 | fclk = iclk = hclk = NULL; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 219 | |
| 220 | dev_set_drvdata(&pdev->dev, NULL); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | /*-------------------------------------------------------------------------*/ |
| 224 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 225 | static int |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 226 | ohci_at91_reset (struct usb_hcd *hcd) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 227 | { |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 228 | struct at91_usbh_data *board = hcd->self.controller->platform_data; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 229 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 230 | int ret; |
| 231 | |
| 232 | if ((ret = ohci_init(ohci)) < 0) |
| 233 | return ret; |
| 234 | |
David Brownell | cd22afd | 2006-09-03 12:21:50 -0700 | [diff] [blame] | 235 | ohci->num_ports = board->ports; |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 236 | return 0; |
| 237 | } |
| 238 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 239 | static int |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 240 | ohci_at91_start (struct usb_hcd *hcd) |
| 241 | { |
| 242 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 243 | int ret; |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 244 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 245 | if ((ret = ohci_run(ohci)) < 0) { |
Greg Kroah-Hartman | 2418d5f | 2012-04-27 11:24:39 -0700 | [diff] [blame] | 246 | dev_err(hcd->self.controller, "can't start %s\n", |
| 247 | hcd->self.bus_name); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 248 | ohci_stop(hcd); |
| 249 | return ret; |
| 250 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 251 | return 0; |
| 252 | } |
| 253 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 254 | static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int enable) |
| 255 | { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 256 | if (!valid_port(port)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 257 | return; |
| 258 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 259 | if (!gpio_is_valid(pdata->vbus_pin[port])) |
Jean-Christophe PLAGNIOL-VILLARD | 770f0ba | 2011-11-12 16:46:13 +0100 | [diff] [blame] | 260 | return; |
| 261 | |
Jean-Christophe PLAGNIOL-VILLARD | 8134ff5 | 2011-12-08 16:32:01 +0100 | [diff] [blame] | 262 | gpio_set_value(pdata->vbus_pin[port], |
Nicolas Ferre | 1e7caf8 | 2012-03-21 14:38:55 +0100 | [diff] [blame] | 263 | pdata->vbus_pin_active_low[port] ^ enable); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) |
| 267 | { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 268 | if (!valid_port(port)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 269 | return -EINVAL; |
| 270 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 271 | if (!gpio_is_valid(pdata->vbus_pin[port])) |
Jean-Christophe PLAGNIOL-VILLARD | 770f0ba | 2011-11-12 16:46:13 +0100 | [diff] [blame] | 272 | return -EINVAL; |
| 273 | |
Jean-Christophe PLAGNIOL-VILLARD | 8134ff5 | 2011-12-08 16:32:01 +0100 | [diff] [blame] | 274 | return gpio_get_value(pdata->vbus_pin[port]) ^ |
Nicolas Ferre | 1e7caf8 | 2012-03-21 14:38:55 +0100 | [diff] [blame] | 275 | pdata->vbus_pin_active_low[port]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | /* |
| 279 | * Update the status data from the hub with the over-current indicator change. |
| 280 | */ |
| 281 | static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 282 | { |
| 283 | struct at91_usbh_data *pdata = hcd->self.controller->platform_data; |
| 284 | int length = ohci_hub_status_data(hcd, buf); |
| 285 | int port; |
| 286 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 287 | at91_for_each_port(port) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 288 | if (pdata->overcurrent_changed[port]) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 289 | if (!length) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 290 | length = 1; |
| 291 | buf[0] |= 1 << (port + 1); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | return length; |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * Look at the control requests to the root hub and see if we need to override. |
| 300 | */ |
| 301 | static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 302 | u16 wIndex, char *buf, u16 wLength) |
| 303 | { |
| 304 | struct at91_usbh_data *pdata = hcd->self.controller->platform_data; |
| 305 | struct usb_hub_descriptor *desc; |
| 306 | int ret = -EINVAL; |
| 307 | u32 *data = (u32 *)buf; |
| 308 | |
| 309 | dev_dbg(hcd->self.controller, |
| 310 | "ohci_at91_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n", |
| 311 | hcd, typeReq, wValue, wIndex, buf, wLength); |
| 312 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 313 | wIndex--; |
| 314 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 315 | switch (typeReq) { |
| 316 | case SetPortFeature: |
| 317 | if (wValue == USB_PORT_FEAT_POWER) { |
| 318 | dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n"); |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 319 | if (valid_port(wIndex)) { |
| 320 | ohci_at91_usb_set_power(pdata, wIndex, 1); |
| 321 | ret = 0; |
| 322 | } |
| 323 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 324 | goto out; |
| 325 | } |
| 326 | break; |
| 327 | |
| 328 | case ClearPortFeature: |
| 329 | switch (wValue) { |
| 330 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 331 | dev_dbg(hcd->self.controller, |
| 332 | "ClearPortFeature: C_OVER_CURRENT\n"); |
| 333 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 334 | if (valid_port(wIndex)) { |
| 335 | pdata->overcurrent_changed[wIndex] = 0; |
| 336 | pdata->overcurrent_status[wIndex] = 0; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | goto out; |
| 340 | |
| 341 | case USB_PORT_FEAT_OVER_CURRENT: |
| 342 | dev_dbg(hcd->self.controller, |
| 343 | "ClearPortFeature: OVER_CURRENT\n"); |
| 344 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 345 | if (valid_port(wIndex)) |
| 346 | pdata->overcurrent_status[wIndex] = 0; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 347 | |
| 348 | goto out; |
| 349 | |
| 350 | case USB_PORT_FEAT_POWER: |
| 351 | dev_dbg(hcd->self.controller, |
| 352 | "ClearPortFeature: POWER\n"); |
| 353 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 354 | if (valid_port(wIndex)) { |
| 355 | ohci_at91_usb_set_power(pdata, wIndex, 0); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 356 | return 0; |
| 357 | } |
| 358 | } |
| 359 | break; |
| 360 | } |
| 361 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 362 | ret = ohci_hub_control(hcd, typeReq, wValue, wIndex + 1, buf, wLength); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 363 | if (ret) |
| 364 | goto out; |
| 365 | |
| 366 | switch (typeReq) { |
| 367 | case GetHubDescriptor: |
| 368 | |
| 369 | /* update the hub's descriptor */ |
| 370 | |
| 371 | desc = (struct usb_hub_descriptor *)buf; |
| 372 | |
| 373 | dev_dbg(hcd->self.controller, "wHubCharacteristics 0x%04x\n", |
| 374 | desc->wHubCharacteristics); |
| 375 | |
| 376 | /* remove the old configurations for power-switching, and |
| 377 | * over-current protection, and insert our new configuration |
| 378 | */ |
| 379 | |
| 380 | desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_LPSM); |
| 381 | desc->wHubCharacteristics |= cpu_to_le16(0x0001); |
| 382 | |
| 383 | if (pdata->overcurrent_supported) { |
| 384 | desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_OCPM); |
| 385 | desc->wHubCharacteristics |= cpu_to_le16(0x0008|0x0001); |
| 386 | } |
| 387 | |
| 388 | dev_dbg(hcd->self.controller, "wHubCharacteristics after 0x%04x\n", |
| 389 | desc->wHubCharacteristics); |
| 390 | |
| 391 | return ret; |
| 392 | |
| 393 | case GetPortStatus: |
| 394 | /* check port status */ |
| 395 | |
| 396 | dev_dbg(hcd->self.controller, "GetPortStatus(%d)\n", wIndex); |
| 397 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 398 | if (valid_port(wIndex)) { |
| 399 | if (!ohci_at91_usb_get_power(pdata, wIndex)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 400 | *data &= ~cpu_to_le32(RH_PS_PPS); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 401 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 402 | if (pdata->overcurrent_changed[wIndex]) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 403 | *data |= cpu_to_le32(RH_PS_OCIC); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 404 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 405 | if (pdata->overcurrent_status[wIndex]) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 406 | *data |= cpu_to_le32(RH_PS_POCI); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 407 | } |
| 408 | } |
| 409 | |
| 410 | out: |
| 411 | return ret; |
| 412 | } |
| 413 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 414 | /*-------------------------------------------------------------------------*/ |
| 415 | |
| 416 | static const struct hc_driver ohci_at91_hc_driver = { |
| 417 | .description = hcd_name, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 418 | .product_desc = "AT91 OHCI", |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 419 | .hcd_priv_size = sizeof(struct ohci_hcd), |
| 420 | |
| 421 | /* |
| 422 | * generic hardware linkage |
| 423 | */ |
| 424 | .irq = ohci_irq, |
| 425 | .flags = HCD_USB11 | HCD_MEMORY, |
| 426 | |
| 427 | /* |
| 428 | * basic lifecycle operations |
| 429 | */ |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 430 | .reset = ohci_at91_reset, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 431 | .start = ohci_at91_start, |
| 432 | .stop = ohci_stop, |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 433 | .shutdown = ohci_shutdown, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 434 | |
| 435 | /* |
| 436 | * managing i/o requests and associated device resources |
| 437 | */ |
| 438 | .urb_enqueue = ohci_urb_enqueue, |
| 439 | .urb_dequeue = ohci_urb_dequeue, |
| 440 | .endpoint_disable = ohci_endpoint_disable, |
| 441 | |
| 442 | /* |
| 443 | * scheduling support |
| 444 | */ |
| 445 | .get_frame_number = ohci_get_frame, |
| 446 | |
| 447 | /* |
| 448 | * root hub support |
| 449 | */ |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 450 | .hub_status_data = ohci_at91_hub_status_data, |
| 451 | .hub_control = ohci_at91_hub_control, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 452 | #ifdef CONFIG_PM |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 453 | .bus_suspend = ohci_bus_suspend, |
| 454 | .bus_resume = ohci_bus_resume, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 455 | #endif |
| 456 | .start_port_reset = ohci_start_port_reset, |
| 457 | }; |
| 458 | |
| 459 | /*-------------------------------------------------------------------------*/ |
| 460 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 461 | static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data) |
| 462 | { |
| 463 | struct platform_device *pdev = data; |
| 464 | struct at91_usbh_data *pdata = pdev->dev.platform_data; |
| 465 | int val, gpio, port; |
| 466 | |
| 467 | /* From the GPIO notifying the over-current situation, find |
| 468 | * out the corresponding port */ |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 469 | at91_for_each_port(port) { |
Joachim Eastwood | 01bb650 | 2012-09-23 22:56:00 +0200 | [diff] [blame] | 470 | if (gpio_is_valid(pdata->overcurrent_pin[port]) && |
| 471 | gpio_to_irq(pdata->overcurrent_pin[port]) == irq) { |
Nicolas Ferre | e449907 | 2012-02-11 14:23:06 +0100 | [diff] [blame] | 472 | gpio = pdata->overcurrent_pin[port]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 473 | break; |
Nicolas Ferre | e449907 | 2012-02-11 14:23:06 +0100 | [diff] [blame] | 474 | } |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 475 | } |
| 476 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 477 | if (port == AT91_MAX_USBH_PORTS) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 478 | dev_err(& pdev->dev, "overcurrent interrupt from unknown GPIO\n"); |
| 479 | return IRQ_HANDLED; |
| 480 | } |
| 481 | |
| 482 | val = gpio_get_value(gpio); |
| 483 | |
| 484 | /* When notified of an over-current situation, disable power |
| 485 | on the corresponding port, and mark this port in |
| 486 | over-current. */ |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 487 | if (!val) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 488 | ohci_at91_usb_set_power(pdata, port, 0); |
| 489 | pdata->overcurrent_status[port] = 1; |
| 490 | pdata->overcurrent_changed[port] = 1; |
| 491 | } |
| 492 | |
| 493 | dev_dbg(& pdev->dev, "overcurrent situation %s\n", |
| 494 | val ? "exited" : "notified"); |
| 495 | |
| 496 | return IRQ_HANDLED; |
| 497 | } |
| 498 | |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 499 | #ifdef CONFIG_OF |
| 500 | static const struct of_device_id at91_ohci_dt_ids[] = { |
| 501 | { .compatible = "atmel,at91rm9200-ohci" }, |
| 502 | { /* sentinel */ } |
| 503 | }; |
| 504 | |
| 505 | MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids); |
| 506 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 507 | static int ohci_at91_of_init(struct platform_device *pdev) |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 508 | { |
| 509 | struct device_node *np = pdev->dev.of_node; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 510 | int i, gpio; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 511 | enum of_gpio_flags flags; |
| 512 | struct at91_usbh_data *pdata; |
| 513 | u32 ports; |
| 514 | |
| 515 | if (!np) |
| 516 | return 0; |
| 517 | |
| 518 | /* Right now device-tree probed devices don't get dma_mask set. |
| 519 | * Since shared usb code relies on it, set it here for now. |
| 520 | * Once we have dma capability bindings this can go away. |
| 521 | */ |
| 522 | if (!pdev->dev.dma_mask) |
Stephen Warren | 3b9561e | 2013-05-07 16:53:52 -0600 | [diff] [blame] | 523 | pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; |
| 524 | if (!pdev->dev.coherent_dma_mask) |
| 525 | pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 526 | |
| 527 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| 528 | if (!pdata) |
| 529 | return -ENOMEM; |
| 530 | |
| 531 | if (!of_property_read_u32(np, "num-ports", &ports)) |
| 532 | pdata->ports = ports; |
| 533 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 534 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 535 | gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i, &flags); |
| 536 | pdata->vbus_pin[i] = gpio; |
| 537 | if (!gpio_is_valid(gpio)) |
| 538 | continue; |
| 539 | pdata->vbus_pin_active_low[i] = flags & OF_GPIO_ACTIVE_LOW; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 540 | } |
| 541 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 542 | at91_for_each_port(i) |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 543 | pdata->overcurrent_pin[i] = |
| 544 | of_get_named_gpio_flags(np, "atmel,oc-gpio", i, &flags); |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 545 | |
| 546 | pdev->dev.platform_data = pdata; |
| 547 | |
| 548 | return 0; |
| 549 | } |
| 550 | #else |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 551 | static int ohci_at91_of_init(struct platform_device *pdev) |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 552 | { |
| 553 | return 0; |
| 554 | } |
| 555 | #endif |
| 556 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 557 | /*-------------------------------------------------------------------------*/ |
| 558 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 559 | static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 560 | { |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 561 | struct at91_usbh_data *pdata; |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 562 | int i; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 563 | int gpio; |
| 564 | int ret; |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 565 | |
Nicolas Ferre | 1887ab2b | 2012-03-28 11:49:01 +0200 | [diff] [blame] | 566 | ret = ohci_at91_of_init(pdev); |
| 567 | if (ret) |
| 568 | return ret; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 569 | |
| 570 | pdata = pdev->dev.platform_data; |
| 571 | |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 572 | if (pdata) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 573 | at91_for_each_port(i) { |
Nicolas Ferre | 6fffb77 | 2012-08-29 11:49:18 +0200 | [diff] [blame] | 574 | /* |
| 575 | * do not configure PIO if not in relation with |
| 576 | * real USB port on board |
| 577 | */ |
| 578 | if (i >= pdata->ports) { |
| 579 | pdata->vbus_pin[i] = -EINVAL; |
| 580 | pdata->overcurrent_pin[i] = -EINVAL; |
| 581 | break; |
| 582 | } |
| 583 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 584 | if (!gpio_is_valid(pdata->vbus_pin[i])) |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 585 | continue; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 586 | gpio = pdata->vbus_pin[i]; |
| 587 | |
| 588 | ret = gpio_request(gpio, "ohci_vbus"); |
| 589 | if (ret) { |
| 590 | dev_err(&pdev->dev, |
| 591 | "can't request vbus gpio %d\n", gpio); |
| 592 | continue; |
| 593 | } |
| 594 | ret = gpio_direction_output(gpio, |
| 595 | !pdata->vbus_pin_active_low[i]); |
| 596 | if (ret) { |
| 597 | dev_err(&pdev->dev, |
| 598 | "can't put vbus gpio %d as output %d\n", |
| 599 | gpio, !pdata->vbus_pin_active_low[i]); |
| 600 | gpio_free(gpio); |
| 601 | continue; |
| 602 | } |
| 603 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 604 | ohci_at91_usb_set_power(pdata, i, 1); |
| 605 | } |
| 606 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 607 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 608 | if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 609 | continue; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 610 | gpio = pdata->overcurrent_pin[i]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 611 | |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 612 | ret = gpio_request(gpio, "ohci_overcurrent"); |
| 613 | if (ret) { |
| 614 | dev_err(&pdev->dev, |
| 615 | "can't request overcurrent gpio %d\n", |
| 616 | gpio); |
| 617 | continue; |
| 618 | } |
| 619 | |
| 620 | ret = gpio_direction_input(gpio); |
| 621 | if (ret) { |
| 622 | dev_err(&pdev->dev, |
| 623 | "can't configure overcurrent gpio %d as input\n", |
| 624 | gpio); |
| 625 | gpio_free(gpio); |
| 626 | continue; |
| 627 | } |
| 628 | |
| 629 | ret = request_irq(gpio_to_irq(gpio), |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 630 | ohci_hcd_at91_overcurrent_irq, |
| 631 | IRQF_SHARED, "ohci_overcurrent", pdev); |
| 632 | if (ret) { |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 633 | gpio_free(gpio); |
| 634 | dev_err(&pdev->dev, |
| 635 | "can't get gpio IRQ for overcurrent\n"); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 636 | } |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 637 | } |
| 638 | } |
| 639 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 640 | device_init_wakeup(&pdev->dev, 1); |
| 641 | return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 642 | } |
| 643 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 644 | static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 645 | { |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 646 | struct at91_usbh_data *pdata = pdev->dev.platform_data; |
| 647 | int i; |
| 648 | |
| 649 | if (pdata) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 650 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 651 | if (!gpio_is_valid(pdata->vbus_pin[i])) |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 652 | continue; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 653 | ohci_at91_usb_set_power(pdata, i, 0); |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 654 | gpio_free(pdata->vbus_pin[i]); |
| 655 | } |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 656 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 657 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 658 | if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 659 | continue; |
| 660 | free_irq(gpio_to_irq(pdata->overcurrent_pin[i]), pdev); |
| 661 | gpio_free(pdata->overcurrent_pin[i]); |
| 662 | } |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 663 | } |
| 664 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 665 | device_init_wakeup(&pdev->dev, 0); |
Pete Zaitcev | 421b4bf | 2008-06-01 14:38:43 -0700 | [diff] [blame] | 666 | usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev); |
| 667 | return 0; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | #ifdef CONFIG_PM |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 671 | |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 672 | static int |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 673 | ohci_hcd_at91_drv_suspend(struct platform_device *pdev, pm_message_t mesg) |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 674 | { |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 675 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 676 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| 677 | |
| 678 | if (device_may_wakeup(&pdev->dev)) |
| 679 | enable_irq_wake(hcd->irq); |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 680 | |
| 681 | /* |
| 682 | * The integrated transceivers seem unable to notice disconnect, |
| 683 | * reconnect, or wakeup without the 48 MHz clock active. so for |
| 684 | * correctness, always discard connection state (using reset). |
| 685 | * |
| 686 | * REVISIT: some boards will be able to turn VBUS off... |
| 687 | */ |
| 688 | if (at91_suspend_entering_slow_clock()) { |
| 689 | ohci_usb_reset (ohci); |
Patrice Vilchez | 869aa98 | 2010-04-28 13:45:40 +0200 | [diff] [blame] | 690 | /* flush the writes */ |
| 691 | (void) ohci_readl (ohci, &ohci->regs->control); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 692 | at91_stop_clock(); |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 693 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 694 | |
| 695 | return 0; |
| 696 | } |
| 697 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 698 | static int ohci_hcd_at91_drv_resume(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 699 | { |
Marc Pignat | 6dde896 | 2007-01-09 14:00:11 -0800 | [diff] [blame] | 700 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 701 | |
| 702 | if (device_may_wakeup(&pdev->dev)) |
| 703 | disable_irq_wake(hcd->irq); |
| 704 | |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 705 | if (!clocked) |
| 706 | at91_start_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 707 | |
Florian Fainelli | cfa49b4 | 2012-10-08 15:11:29 +0200 | [diff] [blame] | 708 | ohci_resume(hcd, false); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 709 | return 0; |
| 710 | } |
| 711 | #else |
| 712 | #define ohci_hcd_at91_drv_suspend NULL |
| 713 | #define ohci_hcd_at91_drv_resume NULL |
| 714 | #endif |
| 715 | |
Kay Sievers | f4fce61 | 2008-04-10 21:29:22 -0700 | [diff] [blame] | 716 | MODULE_ALIAS("platform:at91_ohci"); |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 717 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 718 | static struct platform_driver ohci_hcd_at91_driver = { |
| 719 | .probe = ohci_hcd_at91_drv_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 720 | .remove = ohci_hcd_at91_drv_remove, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 721 | .shutdown = usb_hcd_platform_shutdown, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 722 | .suspend = ohci_hcd_at91_drv_suspend, |
| 723 | .resume = ohci_hcd_at91_drv_resume, |
| 724 | .driver = { |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 725 | .name = "at91_ohci", |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 726 | .owner = THIS_MODULE, |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 727 | .of_match_table = of_match_ptr(at91_ohci_dt_ids), |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 728 | }, |
| 729 | }; |