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 | |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame^] | 34 | /* interface, function and usb clocks; sometimes also an AHB clock */ |
| 35 | static struct clk *iclk, *fclk, *uclk, *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 | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame^] | 44 | if (IS_ENABLED(CONFIG_COMMON_CLK)) { |
| 45 | clk_set_rate(uclk, 48000000); |
| 46 | clk_prepare_enable(uclk); |
| 47 | } |
Boris BREZILLON | 8e82d8d | 2013-06-19 13:21:08 +0200 | [diff] [blame] | 48 | clk_prepare_enable(hclk); |
| 49 | clk_prepare_enable(iclk); |
| 50 | clk_prepare_enable(fclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 51 | clocked = 1; |
| 52 | } |
| 53 | |
| 54 | static void at91_stop_clock(void) |
| 55 | { |
Boris BREZILLON | 8e82d8d | 2013-06-19 13:21:08 +0200 | [diff] [blame] | 56 | clk_disable_unprepare(fclk); |
| 57 | clk_disable_unprepare(iclk); |
| 58 | clk_disable_unprepare(hclk); |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame^] | 59 | if (IS_ENABLED(CONFIG_COMMON_CLK)) |
| 60 | clk_disable_unprepare(uclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 61 | clocked = 0; |
| 62 | } |
| 63 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 64 | static void at91_start_hc(struct platform_device *pdev) |
| 65 | { |
| 66 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 67 | struct ohci_regs __iomem *regs = hcd->regs; |
| 68 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 69 | dev_dbg(&pdev->dev, "start\n"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 70 | |
| 71 | /* |
| 72 | * Start the USB clocks. |
| 73 | */ |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 74 | at91_start_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 75 | |
| 76 | /* |
| 77 | * The USB host controller must remain in reset. |
| 78 | */ |
| 79 | writel(0, ®s->control); |
| 80 | } |
| 81 | |
| 82 | static void at91_stop_hc(struct platform_device *pdev) |
| 83 | { |
| 84 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 85 | struct ohci_regs __iomem *regs = hcd->regs; |
| 86 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 87 | dev_dbg(&pdev->dev, "stop\n"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 88 | |
| 89 | /* |
| 90 | * Put the USB host controller into reset. |
| 91 | */ |
| 92 | writel(0, ®s->control); |
| 93 | |
| 94 | /* |
| 95 | * Stop the USB clocks. |
| 96 | */ |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 97 | at91_stop_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | |
| 101 | /*-------------------------------------------------------------------------*/ |
| 102 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 103 | static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 104 | |
| 105 | /* configure so an HC device and id are always provided */ |
| 106 | /* always called with process context; sleeping is OK */ |
| 107 | |
| 108 | |
| 109 | /** |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 110 | * usb_hcd_at91_probe - initialize AT91-based HCDs |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 111 | * Context: !in_interrupt() |
| 112 | * |
| 113 | * Allocates basic resources for this USB host controller, and |
| 114 | * then invokes the start() method for the HCD associated with it |
| 115 | * through the hotplug entry's driver_data. |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 116 | */ |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 117 | static int usb_hcd_at91_probe(const struct hc_driver *driver, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 118 | struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 119 | { |
| 120 | int retval; |
| 121 | struct usb_hcd *hcd = NULL; |
| 122 | |
| 123 | if (pdev->num_resources != 2) { |
| 124 | pr_debug("hcd probe: invalid num_resources"); |
| 125 | return -ENODEV; |
| 126 | } |
| 127 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 128 | if ((pdev->resource[0].flags != IORESOURCE_MEM) |
| 129 | || (pdev->resource[1].flags != IORESOURCE_IRQ)) { |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 130 | pr_debug("hcd probe: invalid resource type\n"); |
| 131 | return -ENODEV; |
| 132 | } |
| 133 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 134 | hcd = usb_create_hcd(driver, &pdev->dev, "at91"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 135 | if (!hcd) |
| 136 | return -ENOMEM; |
| 137 | hcd->rsrc_start = pdev->resource[0].start; |
Nicolas Ferre | 7a82f61 | 2012-05-09 10:49:41 +0200 | [diff] [blame] | 138 | hcd->rsrc_len = resource_size(&pdev->resource[0]); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 139 | |
| 140 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| 141 | pr_debug("request_mem_region failed\n"); |
| 142 | retval = -EBUSY; |
| 143 | goto err1; |
| 144 | } |
| 145 | |
| 146 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 147 | if (!hcd->regs) { |
| 148 | pr_debug("ioremap failed\n"); |
| 149 | retval = -EIO; |
| 150 | goto err2; |
| 151 | } |
| 152 | |
| 153 | iclk = clk_get(&pdev->dev, "ohci_clk"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 154 | if (IS_ERR(iclk)) { |
| 155 | dev_err(&pdev->dev, "failed to get ohci_clk\n"); |
| 156 | retval = PTR_ERR(iclk); |
| 157 | goto err3; |
| 158 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 159 | fclk = clk_get(&pdev->dev, "uhpck"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 160 | if (IS_ERR(fclk)) { |
| 161 | dev_err(&pdev->dev, "failed to get uhpck\n"); |
| 162 | retval = PTR_ERR(fclk); |
| 163 | goto err4; |
| 164 | } |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 165 | hclk = clk_get(&pdev->dev, "hclk"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 166 | if (IS_ERR(hclk)) { |
| 167 | dev_err(&pdev->dev, "failed to get hclk\n"); |
| 168 | retval = PTR_ERR(hclk); |
| 169 | goto err5; |
| 170 | } |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame^] | 171 | if (IS_ENABLED(CONFIG_COMMON_CLK)) { |
| 172 | uclk = clk_get(&pdev->dev, "usb_clk"); |
| 173 | if (IS_ERR(uclk)) { |
| 174 | dev_err(&pdev->dev, "failed to get uclk\n"); |
| 175 | retval = PTR_ERR(uclk); |
| 176 | goto err6; |
| 177 | } |
| 178 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 179 | |
| 180 | at91_start_hc(pdev); |
| 181 | ohci_hcd_init(hcd_to_ohci(hcd)); |
| 182 | |
Nicolas Ferre | 2f2cac3 | 2009-07-27 14:59:24 -0700 | [diff] [blame] | 183 | retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 184 | if (retval == 0) |
| 185 | return retval; |
| 186 | |
| 187 | /* Error handling */ |
| 188 | at91_stop_hc(pdev); |
| 189 | |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame^] | 190 | if (IS_ENABLED(CONFIG_COMMON_CLK)) |
| 191 | clk_put(uclk); |
| 192 | err6: |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 193 | clk_put(hclk); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 194 | err5: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 195 | clk_put(fclk); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 196 | err4: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 197 | clk_put(iclk); |
| 198 | |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 199 | err3: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 200 | iounmap(hcd->regs); |
| 201 | |
| 202 | err2: |
| 203 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 204 | |
| 205 | err1: |
| 206 | usb_put_hcd(hcd); |
| 207 | return retval; |
| 208 | } |
| 209 | |
| 210 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 211 | /* may be called with controller, bus, and devices active */ |
| 212 | |
| 213 | /** |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 214 | * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 215 | * @dev: USB Host Controller being removed |
| 216 | * Context: !in_interrupt() |
| 217 | * |
| 218 | * Reverses the effect of usb_hcd_at91_probe(), first invoking |
| 219 | * the HCD's stop() method. It is always called from a thread |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 220 | * context, "rmmod" or something similar. |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 221 | * |
| 222 | */ |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 223 | static void usb_hcd_at91_remove(struct usb_hcd *hcd, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 224 | struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 225 | { |
| 226 | usb_remove_hcd(hcd); |
| 227 | at91_stop_hc(pdev); |
| 228 | iounmap(hcd->regs); |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 229 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
Pete Zaitcev | 421b4bf | 2008-06-01 14:38:43 -0700 | [diff] [blame] | 230 | usb_put_hcd(hcd); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 231 | |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame^] | 232 | if (IS_ENABLED(CONFIG_COMMON_CLK)) |
| 233 | clk_put(uclk); |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 234 | clk_put(hclk); |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 235 | clk_put(fclk); |
| 236 | clk_put(iclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 237 | fclk = iclk = hclk = NULL; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 238 | |
| 239 | dev_set_drvdata(&pdev->dev, NULL); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | /*-------------------------------------------------------------------------*/ |
| 243 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 244 | static int |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 245 | ohci_at91_reset (struct usb_hcd *hcd) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 246 | { |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 247 | struct at91_usbh_data *board = dev_get_platdata(hcd->self.controller); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 248 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 249 | int ret; |
| 250 | |
| 251 | if ((ret = ohci_init(ohci)) < 0) |
| 252 | return ret; |
| 253 | |
David Brownell | cd22afd | 2006-09-03 12:21:50 -0700 | [diff] [blame] | 254 | ohci->num_ports = board->ports; |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 255 | return 0; |
| 256 | } |
| 257 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 258 | static int |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 259 | ohci_at91_start (struct usb_hcd *hcd) |
| 260 | { |
| 261 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 262 | int ret; |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 263 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 264 | if ((ret = ohci_run(ohci)) < 0) { |
Greg Kroah-Hartman | 2418d5f | 2012-04-27 11:24:39 -0700 | [diff] [blame] | 265 | dev_err(hcd->self.controller, "can't start %s\n", |
| 266 | hcd->self.bus_name); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 267 | ohci_stop(hcd); |
| 268 | return ret; |
| 269 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 270 | return 0; |
| 271 | } |
| 272 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 273 | static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int enable) |
| 274 | { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 275 | if (!valid_port(port)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 276 | return; |
| 277 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 278 | if (!gpio_is_valid(pdata->vbus_pin[port])) |
Jean-Christophe PLAGNIOL-VILLARD | 770f0ba | 2011-11-12 16:46:13 +0100 | [diff] [blame] | 279 | return; |
| 280 | |
Jean-Christophe PLAGNIOL-VILLARD | 8134ff5 | 2011-12-08 16:32:01 +0100 | [diff] [blame] | 281 | gpio_set_value(pdata->vbus_pin[port], |
Nicolas Ferre | 1e7caf8 | 2012-03-21 14:38:55 +0100 | [diff] [blame] | 282 | pdata->vbus_pin_active_low[port] ^ enable); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) |
| 286 | { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 287 | if (!valid_port(port)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 288 | return -EINVAL; |
| 289 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 290 | if (!gpio_is_valid(pdata->vbus_pin[port])) |
Jean-Christophe PLAGNIOL-VILLARD | 770f0ba | 2011-11-12 16:46:13 +0100 | [diff] [blame] | 291 | return -EINVAL; |
| 292 | |
Jean-Christophe PLAGNIOL-VILLARD | 8134ff5 | 2011-12-08 16:32:01 +0100 | [diff] [blame] | 293 | return gpio_get_value(pdata->vbus_pin[port]) ^ |
Nicolas Ferre | 1e7caf8 | 2012-03-21 14:38:55 +0100 | [diff] [blame] | 294 | pdata->vbus_pin_active_low[port]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | /* |
| 298 | * Update the status data from the hub with the over-current indicator change. |
| 299 | */ |
| 300 | static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 301 | { |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 302 | struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 303 | int length = ohci_hub_status_data(hcd, buf); |
| 304 | int port; |
| 305 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 306 | at91_for_each_port(port) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 307 | if (pdata->overcurrent_changed[port]) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 308 | if (!length) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 309 | length = 1; |
| 310 | buf[0] |= 1 << (port + 1); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | return length; |
| 315 | } |
| 316 | |
| 317 | /* |
| 318 | * Look at the control requests to the root hub and see if we need to override. |
| 319 | */ |
| 320 | static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 321 | u16 wIndex, char *buf, u16 wLength) |
| 322 | { |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 323 | struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 324 | struct usb_hub_descriptor *desc; |
| 325 | int ret = -EINVAL; |
| 326 | u32 *data = (u32 *)buf; |
| 327 | |
| 328 | dev_dbg(hcd->self.controller, |
| 329 | "ohci_at91_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n", |
| 330 | hcd, typeReq, wValue, wIndex, buf, wLength); |
| 331 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 332 | wIndex--; |
| 333 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 334 | switch (typeReq) { |
| 335 | case SetPortFeature: |
| 336 | if (wValue == USB_PORT_FEAT_POWER) { |
| 337 | dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n"); |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 338 | if (valid_port(wIndex)) { |
| 339 | ohci_at91_usb_set_power(pdata, wIndex, 1); |
| 340 | ret = 0; |
| 341 | } |
| 342 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 343 | goto out; |
| 344 | } |
| 345 | break; |
| 346 | |
| 347 | case ClearPortFeature: |
| 348 | switch (wValue) { |
| 349 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 350 | dev_dbg(hcd->self.controller, |
| 351 | "ClearPortFeature: C_OVER_CURRENT\n"); |
| 352 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 353 | if (valid_port(wIndex)) { |
| 354 | pdata->overcurrent_changed[wIndex] = 0; |
| 355 | pdata->overcurrent_status[wIndex] = 0; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 356 | } |
| 357 | |
| 358 | goto out; |
| 359 | |
| 360 | case USB_PORT_FEAT_OVER_CURRENT: |
| 361 | dev_dbg(hcd->self.controller, |
| 362 | "ClearPortFeature: OVER_CURRENT\n"); |
| 363 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 364 | if (valid_port(wIndex)) |
| 365 | pdata->overcurrent_status[wIndex] = 0; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 366 | |
| 367 | goto out; |
| 368 | |
| 369 | case USB_PORT_FEAT_POWER: |
| 370 | dev_dbg(hcd->self.controller, |
| 371 | "ClearPortFeature: POWER\n"); |
| 372 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 373 | if (valid_port(wIndex)) { |
| 374 | ohci_at91_usb_set_power(pdata, wIndex, 0); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 375 | return 0; |
| 376 | } |
| 377 | } |
| 378 | break; |
| 379 | } |
| 380 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 381 | ret = ohci_hub_control(hcd, typeReq, wValue, wIndex + 1, buf, wLength); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 382 | if (ret) |
| 383 | goto out; |
| 384 | |
| 385 | switch (typeReq) { |
| 386 | case GetHubDescriptor: |
| 387 | |
| 388 | /* update the hub's descriptor */ |
| 389 | |
| 390 | desc = (struct usb_hub_descriptor *)buf; |
| 391 | |
| 392 | dev_dbg(hcd->self.controller, "wHubCharacteristics 0x%04x\n", |
| 393 | desc->wHubCharacteristics); |
| 394 | |
| 395 | /* remove the old configurations for power-switching, and |
| 396 | * over-current protection, and insert our new configuration |
| 397 | */ |
| 398 | |
| 399 | desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_LPSM); |
| 400 | desc->wHubCharacteristics |= cpu_to_le16(0x0001); |
| 401 | |
| 402 | if (pdata->overcurrent_supported) { |
| 403 | desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_OCPM); |
| 404 | desc->wHubCharacteristics |= cpu_to_le16(0x0008|0x0001); |
| 405 | } |
| 406 | |
| 407 | dev_dbg(hcd->self.controller, "wHubCharacteristics after 0x%04x\n", |
| 408 | desc->wHubCharacteristics); |
| 409 | |
| 410 | return ret; |
| 411 | |
| 412 | case GetPortStatus: |
| 413 | /* check port status */ |
| 414 | |
| 415 | dev_dbg(hcd->self.controller, "GetPortStatus(%d)\n", wIndex); |
| 416 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 417 | if (valid_port(wIndex)) { |
| 418 | if (!ohci_at91_usb_get_power(pdata, wIndex)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 419 | *data &= ~cpu_to_le32(RH_PS_PPS); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 420 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 421 | if (pdata->overcurrent_changed[wIndex]) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 422 | *data |= cpu_to_le32(RH_PS_OCIC); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 423 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 424 | if (pdata->overcurrent_status[wIndex]) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 425 | *data |= cpu_to_le32(RH_PS_POCI); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 426 | } |
| 427 | } |
| 428 | |
| 429 | out: |
| 430 | return ret; |
| 431 | } |
| 432 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 433 | /*-------------------------------------------------------------------------*/ |
| 434 | |
| 435 | static const struct hc_driver ohci_at91_hc_driver = { |
| 436 | .description = hcd_name, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 437 | .product_desc = "AT91 OHCI", |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 438 | .hcd_priv_size = sizeof(struct ohci_hcd), |
| 439 | |
| 440 | /* |
| 441 | * generic hardware linkage |
| 442 | */ |
| 443 | .irq = ohci_irq, |
| 444 | .flags = HCD_USB11 | HCD_MEMORY, |
| 445 | |
| 446 | /* |
| 447 | * basic lifecycle operations |
| 448 | */ |
Nicolas Ferre | 07e4e55 | 2012-05-09 10:48:54 +0200 | [diff] [blame] | 449 | .reset = ohci_at91_reset, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 450 | .start = ohci_at91_start, |
| 451 | .stop = ohci_stop, |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 452 | .shutdown = ohci_shutdown, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 453 | |
| 454 | /* |
| 455 | * managing i/o requests and associated device resources |
| 456 | */ |
| 457 | .urb_enqueue = ohci_urb_enqueue, |
| 458 | .urb_dequeue = ohci_urb_dequeue, |
| 459 | .endpoint_disable = ohci_endpoint_disable, |
| 460 | |
| 461 | /* |
| 462 | * scheduling support |
| 463 | */ |
| 464 | .get_frame_number = ohci_get_frame, |
| 465 | |
| 466 | /* |
| 467 | * root hub support |
| 468 | */ |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 469 | .hub_status_data = ohci_at91_hub_status_data, |
| 470 | .hub_control = ohci_at91_hub_control, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 471 | #ifdef CONFIG_PM |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 472 | .bus_suspend = ohci_bus_suspend, |
| 473 | .bus_resume = ohci_bus_resume, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 474 | #endif |
| 475 | .start_port_reset = ohci_start_port_reset, |
| 476 | }; |
| 477 | |
| 478 | /*-------------------------------------------------------------------------*/ |
| 479 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 480 | static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data) |
| 481 | { |
| 482 | struct platform_device *pdev = data; |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 483 | struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 484 | int val, gpio, port; |
| 485 | |
| 486 | /* From the GPIO notifying the over-current situation, find |
| 487 | * out the corresponding port */ |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 488 | at91_for_each_port(port) { |
Joachim Eastwood | 01bb650 | 2012-09-23 22:56:00 +0200 | [diff] [blame] | 489 | if (gpio_is_valid(pdata->overcurrent_pin[port]) && |
| 490 | gpio_to_irq(pdata->overcurrent_pin[port]) == irq) { |
Nicolas Ferre | e449907 | 2012-02-11 14:23:06 +0100 | [diff] [blame] | 491 | gpio = pdata->overcurrent_pin[port]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 492 | break; |
Nicolas Ferre | e449907 | 2012-02-11 14:23:06 +0100 | [diff] [blame] | 493 | } |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 494 | } |
| 495 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 496 | if (port == AT91_MAX_USBH_PORTS) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 497 | dev_err(& pdev->dev, "overcurrent interrupt from unknown GPIO\n"); |
| 498 | return IRQ_HANDLED; |
| 499 | } |
| 500 | |
| 501 | val = gpio_get_value(gpio); |
| 502 | |
| 503 | /* When notified of an over-current situation, disable power |
| 504 | on the corresponding port, and mark this port in |
| 505 | over-current. */ |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 506 | if (!val) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 507 | ohci_at91_usb_set_power(pdata, port, 0); |
| 508 | pdata->overcurrent_status[port] = 1; |
| 509 | pdata->overcurrent_changed[port] = 1; |
| 510 | } |
| 511 | |
| 512 | dev_dbg(& pdev->dev, "overcurrent situation %s\n", |
| 513 | val ? "exited" : "notified"); |
| 514 | |
| 515 | return IRQ_HANDLED; |
| 516 | } |
| 517 | |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 518 | #ifdef CONFIG_OF |
| 519 | static const struct of_device_id at91_ohci_dt_ids[] = { |
| 520 | { .compatible = "atmel,at91rm9200-ohci" }, |
| 521 | { /* sentinel */ } |
| 522 | }; |
| 523 | |
| 524 | MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids); |
| 525 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 526 | static int ohci_at91_of_init(struct platform_device *pdev) |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 527 | { |
| 528 | struct device_node *np = pdev->dev.of_node; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 529 | int i, gpio; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 530 | enum of_gpio_flags flags; |
| 531 | struct at91_usbh_data *pdata; |
| 532 | u32 ports; |
| 533 | |
| 534 | if (!np) |
| 535 | return 0; |
| 536 | |
| 537 | /* Right now device-tree probed devices don't get dma_mask set. |
| 538 | * Since shared usb code relies on it, set it here for now. |
| 539 | * Once we have dma capability bindings this can go away. |
| 540 | */ |
| 541 | if (!pdev->dev.dma_mask) |
Stephen Warren | 3b9561e | 2013-05-07 16:53:52 -0600 | [diff] [blame] | 542 | pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; |
| 543 | if (!pdev->dev.coherent_dma_mask) |
| 544 | pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 545 | |
| 546 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| 547 | if (!pdata) |
| 548 | return -ENOMEM; |
| 549 | |
| 550 | if (!of_property_read_u32(np, "num-ports", &ports)) |
| 551 | pdata->ports = ports; |
| 552 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 553 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 554 | gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i, &flags); |
| 555 | pdata->vbus_pin[i] = gpio; |
| 556 | if (!gpio_is_valid(gpio)) |
| 557 | continue; |
| 558 | 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] | 559 | } |
| 560 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 561 | at91_for_each_port(i) |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 562 | pdata->overcurrent_pin[i] = |
| 563 | 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] | 564 | |
| 565 | pdev->dev.platform_data = pdata; |
| 566 | |
| 567 | return 0; |
| 568 | } |
| 569 | #else |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 570 | static int ohci_at91_of_init(struct platform_device *pdev) |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 571 | { |
| 572 | return 0; |
| 573 | } |
| 574 | #endif |
| 575 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 576 | /*-------------------------------------------------------------------------*/ |
| 577 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 578 | static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 579 | { |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 580 | struct at91_usbh_data *pdata; |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 581 | int i; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 582 | int gpio; |
| 583 | int ret; |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 584 | |
Nicolas Ferre | 1887ab2b | 2012-03-28 11:49:01 +0200 | [diff] [blame] | 585 | ret = ohci_at91_of_init(pdev); |
| 586 | if (ret) |
| 587 | return ret; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 588 | |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 589 | pdata = dev_get_platdata(&pdev->dev); |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 590 | |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 591 | if (pdata) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 592 | at91_for_each_port(i) { |
Nicolas Ferre | 6fffb77 | 2012-08-29 11:49:18 +0200 | [diff] [blame] | 593 | /* |
| 594 | * do not configure PIO if not in relation with |
| 595 | * real USB port on board |
| 596 | */ |
| 597 | if (i >= pdata->ports) { |
| 598 | pdata->vbus_pin[i] = -EINVAL; |
| 599 | pdata->overcurrent_pin[i] = -EINVAL; |
| 600 | break; |
| 601 | } |
| 602 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 603 | if (!gpio_is_valid(pdata->vbus_pin[i])) |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 604 | continue; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 605 | gpio = pdata->vbus_pin[i]; |
| 606 | |
| 607 | ret = gpio_request(gpio, "ohci_vbus"); |
| 608 | if (ret) { |
| 609 | dev_err(&pdev->dev, |
| 610 | "can't request vbus gpio %d\n", gpio); |
| 611 | continue; |
| 612 | } |
| 613 | ret = gpio_direction_output(gpio, |
| 614 | !pdata->vbus_pin_active_low[i]); |
| 615 | if (ret) { |
| 616 | dev_err(&pdev->dev, |
| 617 | "can't put vbus gpio %d as output %d\n", |
| 618 | gpio, !pdata->vbus_pin_active_low[i]); |
| 619 | gpio_free(gpio); |
| 620 | continue; |
| 621 | } |
| 622 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 623 | ohci_at91_usb_set_power(pdata, i, 1); |
| 624 | } |
| 625 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 626 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 627 | if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 628 | continue; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 629 | gpio = pdata->overcurrent_pin[i]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 630 | |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 631 | ret = gpio_request(gpio, "ohci_overcurrent"); |
| 632 | if (ret) { |
| 633 | dev_err(&pdev->dev, |
| 634 | "can't request overcurrent gpio %d\n", |
| 635 | gpio); |
| 636 | continue; |
| 637 | } |
| 638 | |
| 639 | ret = gpio_direction_input(gpio); |
| 640 | if (ret) { |
| 641 | dev_err(&pdev->dev, |
| 642 | "can't configure overcurrent gpio %d as input\n", |
| 643 | gpio); |
| 644 | gpio_free(gpio); |
| 645 | continue; |
| 646 | } |
| 647 | |
| 648 | ret = request_irq(gpio_to_irq(gpio), |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 649 | ohci_hcd_at91_overcurrent_irq, |
| 650 | IRQF_SHARED, "ohci_overcurrent", pdev); |
| 651 | if (ret) { |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 652 | gpio_free(gpio); |
| 653 | dev_err(&pdev->dev, |
| 654 | "can't get gpio IRQ for overcurrent\n"); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 655 | } |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 656 | } |
| 657 | } |
| 658 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 659 | device_init_wakeup(&pdev->dev, 1); |
| 660 | return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 661 | } |
| 662 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 663 | static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 664 | { |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 665 | struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 666 | int i; |
| 667 | |
| 668 | if (pdata) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 669 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 670 | if (!gpio_is_valid(pdata->vbus_pin[i])) |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 671 | continue; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 672 | ohci_at91_usb_set_power(pdata, i, 0); |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 673 | gpio_free(pdata->vbus_pin[i]); |
| 674 | } |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 675 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 676 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 677 | if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 678 | continue; |
| 679 | free_irq(gpio_to_irq(pdata->overcurrent_pin[i]), pdev); |
| 680 | gpio_free(pdata->overcurrent_pin[i]); |
| 681 | } |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 682 | } |
| 683 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 684 | device_init_wakeup(&pdev->dev, 0); |
Pete Zaitcev | 421b4bf | 2008-06-01 14:38:43 -0700 | [diff] [blame] | 685 | usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev); |
| 686 | return 0; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 687 | } |
| 688 | |
| 689 | #ifdef CONFIG_PM |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 690 | |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 691 | static int |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 692 | 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] | 693 | { |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 694 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 695 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| 696 | |
| 697 | if (device_may_wakeup(&pdev->dev)) |
| 698 | enable_irq_wake(hcd->irq); |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 699 | |
| 700 | /* |
| 701 | * The integrated transceivers seem unable to notice disconnect, |
| 702 | * reconnect, or wakeup without the 48 MHz clock active. so for |
| 703 | * correctness, always discard connection state (using reset). |
| 704 | * |
| 705 | * REVISIT: some boards will be able to turn VBUS off... |
| 706 | */ |
| 707 | if (at91_suspend_entering_slow_clock()) { |
| 708 | ohci_usb_reset (ohci); |
Patrice Vilchez | 869aa98 | 2010-04-28 13:45:40 +0200 | [diff] [blame] | 709 | /* flush the writes */ |
| 710 | (void) ohci_readl (ohci, &ohci->regs->control); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 711 | at91_stop_clock(); |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 712 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 713 | |
| 714 | return 0; |
| 715 | } |
| 716 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 717 | static int ohci_hcd_at91_drv_resume(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 718 | { |
Marc Pignat | 6dde896 | 2007-01-09 14:00:11 -0800 | [diff] [blame] | 719 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 720 | |
| 721 | if (device_may_wakeup(&pdev->dev)) |
| 722 | disable_irq_wake(hcd->irq); |
| 723 | |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 724 | if (!clocked) |
| 725 | at91_start_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 726 | |
Florian Fainelli | cfa49b4 | 2012-10-08 15:11:29 +0200 | [diff] [blame] | 727 | ohci_resume(hcd, false); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 728 | return 0; |
| 729 | } |
| 730 | #else |
| 731 | #define ohci_hcd_at91_drv_suspend NULL |
| 732 | #define ohci_hcd_at91_drv_resume NULL |
| 733 | #endif |
| 734 | |
Kay Sievers | f4fce61 | 2008-04-10 21:29:22 -0700 | [diff] [blame] | 735 | MODULE_ALIAS("platform:at91_ohci"); |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 736 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 737 | static struct platform_driver ohci_hcd_at91_driver = { |
| 738 | .probe = ohci_hcd_at91_drv_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 739 | .remove = ohci_hcd_at91_drv_remove, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 740 | .shutdown = usb_hcd_platform_shutdown, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 741 | .suspend = ohci_hcd_at91_drv_suspend, |
| 742 | .resume = ohci_hcd_at91_drv_resume, |
| 743 | .driver = { |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 744 | .name = "at91_ohci", |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 745 | .owner = THIS_MODULE, |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 746 | .of_match_table = of_match_ptr(at91_ohci_dt_ids), |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 747 | }, |
| 748 | }; |