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> |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 16 | #include <linux/dma-mapping.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> |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 19 | #include <linux/platform_device.h> |
Jean-Christophe PLAGNIOL-VILLARD | bcd2360 | 2012-10-30 05:12:23 +0800 | [diff] [blame] | 20 | #include <linux/platform_data/atmel.h> |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 21 | #include <linux/io.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/usb.h> |
| 25 | #include <linux/usb/hcd.h> |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 26 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 27 | #include <mach/hardware.h> |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 28 | #include <asm/gpio.h> |
| 29 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 30 | #include <mach/cpu.h> |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 31 | |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 32 | |
| 33 | #include "ohci.h" |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 34 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 35 | #define valid_port(index) ((index) >= 0 && (index) < AT91_MAX_USBH_PORTS) |
| 36 | #define at91_for_each_port(index) \ |
| 37 | for ((index) = 0; (index) < AT91_MAX_USBH_PORTS; (index)++) |
| 38 | |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame] | 39 | /* interface, function and usb clocks; sometimes also an AHB clock */ |
| 40 | static struct clk *iclk, *fclk, *uclk, *hclk; |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 41 | /* interface and function clocks; sometimes also an AHB clock */ |
| 42 | |
| 43 | #define DRIVER_DESC "OHCI Atmel driver" |
| 44 | |
| 45 | static const char hcd_name[] = "ohci-atmel"; |
| 46 | |
| 47 | static struct hc_driver __read_mostly ohci_at91_hc_driver; |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 48 | static int clocked; |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 49 | static int (*orig_ohci_hub_control)(struct usb_hcd *hcd, u16 typeReq, |
| 50 | u16 wValue, u16 wIndex, char *buf, u16 wLength); |
| 51 | static int (*orig_ohci_hub_status_data)(struct usb_hcd *hcd, char *buf); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 52 | |
| 53 | extern int usb_disabled(void); |
| 54 | |
| 55 | /*-------------------------------------------------------------------------*/ |
| 56 | |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 57 | static void at91_start_clock(void) |
| 58 | { |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame] | 59 | if (IS_ENABLED(CONFIG_COMMON_CLK)) { |
| 60 | clk_set_rate(uclk, 48000000); |
| 61 | clk_prepare_enable(uclk); |
| 62 | } |
Boris BREZILLON | 8e82d8d | 2013-06-19 13:21:08 +0200 | [diff] [blame] | 63 | clk_prepare_enable(hclk); |
| 64 | clk_prepare_enable(iclk); |
| 65 | clk_prepare_enable(fclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 66 | clocked = 1; |
| 67 | } |
| 68 | |
| 69 | static void at91_stop_clock(void) |
| 70 | { |
Boris BREZILLON | 8e82d8d | 2013-06-19 13:21:08 +0200 | [diff] [blame] | 71 | clk_disable_unprepare(fclk); |
| 72 | clk_disable_unprepare(iclk); |
| 73 | clk_disable_unprepare(hclk); |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame] | 74 | if (IS_ENABLED(CONFIG_COMMON_CLK)) |
| 75 | clk_disable_unprepare(uclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 76 | clocked = 0; |
| 77 | } |
| 78 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 79 | static void at91_start_hc(struct platform_device *pdev) |
| 80 | { |
| 81 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 82 | struct ohci_regs __iomem *regs = hcd->regs; |
| 83 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 84 | dev_dbg(&pdev->dev, "start\n"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 85 | |
| 86 | /* |
| 87 | * Start the USB clocks. |
| 88 | */ |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 89 | at91_start_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 90 | |
| 91 | /* |
| 92 | * The USB host controller must remain in reset. |
| 93 | */ |
| 94 | writel(0, ®s->control); |
| 95 | } |
| 96 | |
| 97 | static void at91_stop_hc(struct platform_device *pdev) |
| 98 | { |
| 99 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 100 | struct ohci_regs __iomem *regs = hcd->regs; |
| 101 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 102 | dev_dbg(&pdev->dev, "stop\n"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 103 | |
| 104 | /* |
| 105 | * Put the USB host controller into reset. |
| 106 | */ |
| 107 | writel(0, ®s->control); |
| 108 | |
| 109 | /* |
| 110 | * Stop the USB clocks. |
| 111 | */ |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 112 | at91_stop_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | |
| 116 | /*-------------------------------------------------------------------------*/ |
| 117 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 118 | static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 119 | |
| 120 | /* configure so an HC device and id are always provided */ |
| 121 | /* always called with process context; sleeping is OK */ |
| 122 | |
| 123 | |
| 124 | /** |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 125 | * usb_hcd_at91_probe - initialize AT91-based HCDs |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 126 | * Context: !in_interrupt() |
| 127 | * |
| 128 | * Allocates basic resources for this USB host controller, and |
| 129 | * then invokes the start() method for the HCD associated with it |
| 130 | * through the hotplug entry's driver_data. |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 131 | */ |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 132 | static int usb_hcd_at91_probe(const struct hc_driver *driver, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 133 | struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 134 | { |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 135 | struct at91_usbh_data *board; |
| 136 | struct ohci_hcd *ohci; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 137 | int retval; |
| 138 | struct usb_hcd *hcd = NULL; |
| 139 | |
| 140 | if (pdev->num_resources != 2) { |
| 141 | pr_debug("hcd probe: invalid num_resources"); |
| 142 | return -ENODEV; |
| 143 | } |
| 144 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 145 | if ((pdev->resource[0].flags != IORESOURCE_MEM) |
| 146 | || (pdev->resource[1].flags != IORESOURCE_IRQ)) { |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 147 | pr_debug("hcd probe: invalid resource type\n"); |
| 148 | return -ENODEV; |
| 149 | } |
| 150 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 151 | hcd = usb_create_hcd(driver, &pdev->dev, "at91"); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 152 | if (!hcd) |
| 153 | return -ENOMEM; |
| 154 | hcd->rsrc_start = pdev->resource[0].start; |
Nicolas Ferre | 7a82f61 | 2012-05-09 10:49:41 +0200 | [diff] [blame] | 155 | hcd->rsrc_len = resource_size(&pdev->resource[0]); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 156 | |
Boris BREZILLON | cca2bbb | 2013-12-09 09:51:53 +0100 | [diff] [blame^] | 157 | hcd->regs = devm_ioremap_resource(dev, res); |
| 158 | if (IS_ERR(hcd->regs)) { |
| 159 | retval = PTR_ERR(hcd->regs); |
| 160 | goto err; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | iclk = clk_get(&pdev->dev, "ohci_clk"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 164 | if (IS_ERR(iclk)) { |
| 165 | dev_err(&pdev->dev, "failed to get ohci_clk\n"); |
| 166 | retval = PTR_ERR(iclk); |
Boris BREZILLON | cca2bbb | 2013-12-09 09:51:53 +0100 | [diff] [blame^] | 167 | goto err; |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 168 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 169 | fclk = clk_get(&pdev->dev, "uhpck"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 170 | if (IS_ERR(fclk)) { |
| 171 | dev_err(&pdev->dev, "failed to get uhpck\n"); |
| 172 | retval = PTR_ERR(fclk); |
| 173 | goto err4; |
| 174 | } |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 175 | hclk = clk_get(&pdev->dev, "hclk"); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 176 | if (IS_ERR(hclk)) { |
| 177 | dev_err(&pdev->dev, "failed to get hclk\n"); |
| 178 | retval = PTR_ERR(hclk); |
| 179 | goto err5; |
| 180 | } |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame] | 181 | if (IS_ENABLED(CONFIG_COMMON_CLK)) { |
| 182 | uclk = clk_get(&pdev->dev, "usb_clk"); |
| 183 | if (IS_ERR(uclk)) { |
| 184 | dev_err(&pdev->dev, "failed to get uclk\n"); |
| 185 | retval = PTR_ERR(uclk); |
| 186 | goto err6; |
| 187 | } |
| 188 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 189 | |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 190 | board = hcd->self.controller->platform_data; |
| 191 | ohci = hcd_to_ohci(hcd); |
| 192 | ohci->num_ports = board->ports; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 193 | at91_start_hc(pdev); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 194 | |
Nicolas Ferre | 2f2cac3 | 2009-07-27 14:59:24 -0700 | [diff] [blame] | 195 | retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED); |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 196 | if (retval == 0) { |
| 197 | device_wakeup_enable(hcd->self.controller); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 198 | return retval; |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 199 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 200 | |
| 201 | /* Error handling */ |
| 202 | at91_stop_hc(pdev); |
| 203 | |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame] | 204 | if (IS_ENABLED(CONFIG_COMMON_CLK)) |
| 205 | clk_put(uclk); |
| 206 | err6: |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 207 | clk_put(hclk); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 208 | err5: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 209 | clk_put(fclk); |
Jean-Christophe PLAGNIOL-VILLARD | 6813463 | 2011-12-08 16:32:00 +0100 | [diff] [blame] | 210 | err4: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 211 | clk_put(iclk); |
| 212 | |
Boris BREZILLON | cca2bbb | 2013-12-09 09:51:53 +0100 | [diff] [blame^] | 213 | err: |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 214 | usb_put_hcd(hcd); |
| 215 | return retval; |
| 216 | } |
| 217 | |
| 218 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 219 | /* may be called with controller, bus, and devices active */ |
| 220 | |
| 221 | /** |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 222 | * usb_hcd_at91_remove - shutdown processing for AT91-based HCDs |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 223 | * @dev: USB Host Controller being removed |
| 224 | * Context: !in_interrupt() |
| 225 | * |
| 226 | * Reverses the effect of usb_hcd_at91_probe(), first invoking |
| 227 | * the HCD's stop() method. It is always called from a thread |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 228 | * context, "rmmod" or something similar. |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 229 | * |
| 230 | */ |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 231 | static void usb_hcd_at91_remove(struct usb_hcd *hcd, |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 232 | struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 233 | { |
| 234 | usb_remove_hcd(hcd); |
| 235 | at91_stop_hc(pdev); |
Pete Zaitcev | 421b4bf | 2008-06-01 14:38:43 -0700 | [diff] [blame] | 236 | usb_put_hcd(hcd); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 237 | |
Boris BREZILLON | 6b0a1cf | 2013-08-01 19:09:13 +0200 | [diff] [blame] | 238 | if (IS_ENABLED(CONFIG_COMMON_CLK)) |
| 239 | clk_put(uclk); |
Jean-Christophe PLAGNIOL-VILLARD | 0af4316 | 2011-08-30 03:29:28 +0200 | [diff] [blame] | 240 | clk_put(hclk); |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 241 | clk_put(fclk); |
| 242 | clk_put(iclk); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 243 | fclk = iclk = hclk = NULL; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 244 | } |
| 245 | |
| 246 | /*-------------------------------------------------------------------------*/ |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 247 | static void ohci_at91_usb_set_power(struct at91_usbh_data *pdata, int port, int enable) |
| 248 | { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 249 | if (!valid_port(port)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 250 | return; |
| 251 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 252 | if (!gpio_is_valid(pdata->vbus_pin[port])) |
Jean-Christophe PLAGNIOL-VILLARD | 770f0ba | 2011-11-12 16:46:13 +0100 | [diff] [blame] | 253 | return; |
| 254 | |
Jean-Christophe PLAGNIOL-VILLARD | 8134ff5 | 2011-12-08 16:32:01 +0100 | [diff] [blame] | 255 | gpio_set_value(pdata->vbus_pin[port], |
Nicolas Ferre | 1e7caf8 | 2012-03-21 14:38:55 +0100 | [diff] [blame] | 256 | pdata->vbus_pin_active_low[port] ^ enable); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | static int ohci_at91_usb_get_power(struct at91_usbh_data *pdata, int port) |
| 260 | { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 261 | if (!valid_port(port)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 262 | return -EINVAL; |
| 263 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 264 | if (!gpio_is_valid(pdata->vbus_pin[port])) |
Jean-Christophe PLAGNIOL-VILLARD | 770f0ba | 2011-11-12 16:46:13 +0100 | [diff] [blame] | 265 | return -EINVAL; |
| 266 | |
Jean-Christophe PLAGNIOL-VILLARD | 8134ff5 | 2011-12-08 16:32:01 +0100 | [diff] [blame] | 267 | return gpio_get_value(pdata->vbus_pin[port]) ^ |
Nicolas Ferre | 1e7caf8 | 2012-03-21 14:38:55 +0100 | [diff] [blame] | 268 | pdata->vbus_pin_active_low[port]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | /* |
| 272 | * Update the status data from the hub with the over-current indicator change. |
| 273 | */ |
| 274 | static int ohci_at91_hub_status_data(struct usb_hcd *hcd, char *buf) |
| 275 | { |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 276 | struct at91_usbh_data *pdata = hcd->self.controller->platform_data; |
| 277 | int length = orig_ohci_hub_status_data(hcd, buf); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 278 | int port; |
| 279 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 280 | at91_for_each_port(port) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 281 | if (pdata->overcurrent_changed[port]) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 282 | if (!length) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 283 | length = 1; |
| 284 | buf[0] |= 1 << (port + 1); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | return length; |
| 289 | } |
| 290 | |
| 291 | /* |
| 292 | * Look at the control requests to the root hub and see if we need to override. |
| 293 | */ |
| 294 | static int ohci_at91_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| 295 | u16 wIndex, char *buf, u16 wLength) |
| 296 | { |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 297 | struct at91_usbh_data *pdata = dev_get_platdata(hcd->self.controller); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 298 | struct usb_hub_descriptor *desc; |
| 299 | int ret = -EINVAL; |
| 300 | u32 *data = (u32 *)buf; |
| 301 | |
| 302 | dev_dbg(hcd->self.controller, |
| 303 | "ohci_at91_hub_control(%p,0x%04x,0x%04x,0x%04x,%p,%04x)\n", |
| 304 | hcd, typeReq, wValue, wIndex, buf, wLength); |
| 305 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 306 | wIndex--; |
| 307 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 308 | switch (typeReq) { |
| 309 | case SetPortFeature: |
| 310 | if (wValue == USB_PORT_FEAT_POWER) { |
| 311 | dev_dbg(hcd->self.controller, "SetPortFeat: POWER\n"); |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 312 | if (valid_port(wIndex)) { |
| 313 | ohci_at91_usb_set_power(pdata, wIndex, 1); |
| 314 | ret = 0; |
| 315 | } |
| 316 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 317 | goto out; |
| 318 | } |
| 319 | break; |
| 320 | |
| 321 | case ClearPortFeature: |
| 322 | switch (wValue) { |
| 323 | case USB_PORT_FEAT_C_OVER_CURRENT: |
| 324 | dev_dbg(hcd->self.controller, |
| 325 | "ClearPortFeature: C_OVER_CURRENT\n"); |
| 326 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 327 | if (valid_port(wIndex)) { |
| 328 | pdata->overcurrent_changed[wIndex] = 0; |
| 329 | pdata->overcurrent_status[wIndex] = 0; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | goto out; |
| 333 | |
| 334 | case USB_PORT_FEAT_OVER_CURRENT: |
| 335 | dev_dbg(hcd->self.controller, |
| 336 | "ClearPortFeature: OVER_CURRENT\n"); |
| 337 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 338 | if (valid_port(wIndex)) |
| 339 | pdata->overcurrent_status[wIndex] = 0; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 340 | |
| 341 | goto out; |
| 342 | |
| 343 | case USB_PORT_FEAT_POWER: |
| 344 | dev_dbg(hcd->self.controller, |
| 345 | "ClearPortFeature: POWER\n"); |
| 346 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 347 | if (valid_port(wIndex)) { |
| 348 | ohci_at91_usb_set_power(pdata, wIndex, 0); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 349 | return 0; |
| 350 | } |
| 351 | } |
| 352 | break; |
| 353 | } |
| 354 | |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 355 | ret = orig_ohci_hub_control(hcd, typeReq, wValue, wIndex + 1, |
| 356 | buf, wLength); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 357 | if (ret) |
| 358 | goto out; |
| 359 | |
| 360 | switch (typeReq) { |
| 361 | case GetHubDescriptor: |
| 362 | |
| 363 | /* update the hub's descriptor */ |
| 364 | |
| 365 | desc = (struct usb_hub_descriptor *)buf; |
| 366 | |
| 367 | dev_dbg(hcd->self.controller, "wHubCharacteristics 0x%04x\n", |
| 368 | desc->wHubCharacteristics); |
| 369 | |
| 370 | /* remove the old configurations for power-switching, and |
| 371 | * over-current protection, and insert our new configuration |
| 372 | */ |
| 373 | |
| 374 | desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_LPSM); |
| 375 | desc->wHubCharacteristics |= cpu_to_le16(0x0001); |
| 376 | |
| 377 | if (pdata->overcurrent_supported) { |
| 378 | desc->wHubCharacteristics &= ~cpu_to_le16(HUB_CHAR_OCPM); |
| 379 | desc->wHubCharacteristics |= cpu_to_le16(0x0008|0x0001); |
| 380 | } |
| 381 | |
| 382 | dev_dbg(hcd->self.controller, "wHubCharacteristics after 0x%04x\n", |
| 383 | desc->wHubCharacteristics); |
| 384 | |
| 385 | return ret; |
| 386 | |
| 387 | case GetPortStatus: |
| 388 | /* check port status */ |
| 389 | |
| 390 | dev_dbg(hcd->self.controller, "GetPortStatus(%d)\n", wIndex); |
| 391 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 392 | if (valid_port(wIndex)) { |
| 393 | if (!ohci_at91_usb_get_power(pdata, wIndex)) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 394 | *data &= ~cpu_to_le32(RH_PS_PPS); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 395 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 396 | if (pdata->overcurrent_changed[wIndex]) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 397 | *data |= cpu_to_le32(RH_PS_OCIC); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 398 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 399 | if (pdata->overcurrent_status[wIndex]) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 400 | *data |= cpu_to_le32(RH_PS_POCI); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 401 | } |
| 402 | } |
| 403 | |
| 404 | out: |
| 405 | return ret; |
| 406 | } |
| 407 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 408 | /*-------------------------------------------------------------------------*/ |
| 409 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 410 | static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data) |
| 411 | { |
| 412 | struct platform_device *pdev = data; |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 413 | struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 414 | int val, gpio, port; |
| 415 | |
| 416 | /* From the GPIO notifying the over-current situation, find |
| 417 | * out the corresponding port */ |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 418 | at91_for_each_port(port) { |
Joachim Eastwood | 01bb650 | 2012-09-23 22:56:00 +0200 | [diff] [blame] | 419 | if (gpio_is_valid(pdata->overcurrent_pin[port]) && |
| 420 | gpio_to_irq(pdata->overcurrent_pin[port]) == irq) { |
Nicolas Ferre | e449907 | 2012-02-11 14:23:06 +0100 | [diff] [blame] | 421 | gpio = pdata->overcurrent_pin[port]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 422 | break; |
Nicolas Ferre | e449907 | 2012-02-11 14:23:06 +0100 | [diff] [blame] | 423 | } |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 424 | } |
| 425 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 426 | if (port == AT91_MAX_USBH_PORTS) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 427 | dev_err(& pdev->dev, "overcurrent interrupt from unknown GPIO\n"); |
| 428 | return IRQ_HANDLED; |
| 429 | } |
| 430 | |
| 431 | val = gpio_get_value(gpio); |
| 432 | |
| 433 | /* When notified of an over-current situation, disable power |
| 434 | on the corresponding port, and mark this port in |
| 435 | over-current. */ |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 436 | if (!val) { |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 437 | ohci_at91_usb_set_power(pdata, port, 0); |
| 438 | pdata->overcurrent_status[port] = 1; |
| 439 | pdata->overcurrent_changed[port] = 1; |
| 440 | } |
| 441 | |
| 442 | dev_dbg(& pdev->dev, "overcurrent situation %s\n", |
| 443 | val ? "exited" : "notified"); |
| 444 | |
| 445 | return IRQ_HANDLED; |
| 446 | } |
| 447 | |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 448 | #ifdef CONFIG_OF |
| 449 | static const struct of_device_id at91_ohci_dt_ids[] = { |
| 450 | { .compatible = "atmel,at91rm9200-ohci" }, |
| 451 | { /* sentinel */ } |
| 452 | }; |
| 453 | |
| 454 | MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids); |
| 455 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 456 | static int ohci_at91_of_init(struct platform_device *pdev) |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 457 | { |
| 458 | struct device_node *np = pdev->dev.of_node; |
Russell King | 22d9d8e | 2013-06-10 16:28:49 +0100 | [diff] [blame] | 459 | int i, gpio, ret; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 460 | enum of_gpio_flags flags; |
| 461 | struct at91_usbh_data *pdata; |
| 462 | u32 ports; |
| 463 | |
| 464 | if (!np) |
| 465 | return 0; |
| 466 | |
| 467 | /* Right now device-tree probed devices don't get dma_mask set. |
| 468 | * Since shared usb code relies on it, set it here for now. |
| 469 | * Once we have dma capability bindings this can go away. |
| 470 | */ |
Russell King | e1fd734 | 2013-06-27 12:36:37 +0100 | [diff] [blame] | 471 | ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
Russell King | 22d9d8e | 2013-06-10 16:28:49 +0100 | [diff] [blame] | 472 | if (ret) |
| 473 | return ret; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 474 | |
| 475 | pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); |
| 476 | if (!pdata) |
| 477 | return -ENOMEM; |
| 478 | |
| 479 | if (!of_property_read_u32(np, "num-ports", &ports)) |
| 480 | pdata->ports = ports; |
| 481 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 482 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 483 | gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i, &flags); |
| 484 | pdata->vbus_pin[i] = gpio; |
| 485 | if (!gpio_is_valid(gpio)) |
| 486 | continue; |
| 487 | 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] | 488 | } |
| 489 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 490 | at91_for_each_port(i) |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 491 | pdata->overcurrent_pin[i] = |
| 492 | 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] | 493 | |
| 494 | pdev->dev.platform_data = pdata; |
| 495 | |
| 496 | return 0; |
| 497 | } |
| 498 | #else |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 499 | static int ohci_at91_of_init(struct platform_device *pdev) |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 500 | { |
| 501 | return 0; |
| 502 | } |
| 503 | #endif |
| 504 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 505 | /*-------------------------------------------------------------------------*/ |
| 506 | |
Bill Pemberton | 41ac7b3 | 2012-11-19 13:21:48 -0500 | [diff] [blame] | 507 | static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 508 | { |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 509 | struct at91_usbh_data *pdata; |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 510 | int i; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 511 | int gpio; |
| 512 | int ret; |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 513 | |
Nicolas Ferre | 1887ab2b | 2012-03-28 11:49:01 +0200 | [diff] [blame] | 514 | ret = ohci_at91_of_init(pdev); |
| 515 | if (ret) |
| 516 | return ret; |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 517 | |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 518 | pdata = dev_get_platdata(&pdev->dev); |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 519 | |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 520 | if (pdata) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 521 | at91_for_each_port(i) { |
Nicolas Ferre | 6fffb77 | 2012-08-29 11:49:18 +0200 | [diff] [blame] | 522 | /* |
| 523 | * do not configure PIO if not in relation with |
| 524 | * real USB port on board |
| 525 | */ |
| 526 | if (i >= pdata->ports) { |
| 527 | pdata->vbus_pin[i] = -EINVAL; |
| 528 | pdata->overcurrent_pin[i] = -EINVAL; |
| 529 | break; |
| 530 | } |
| 531 | |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 532 | if (!gpio_is_valid(pdata->vbus_pin[i])) |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 533 | continue; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 534 | gpio = pdata->vbus_pin[i]; |
| 535 | |
| 536 | ret = gpio_request(gpio, "ohci_vbus"); |
| 537 | if (ret) { |
| 538 | dev_err(&pdev->dev, |
| 539 | "can't request vbus gpio %d\n", gpio); |
| 540 | continue; |
| 541 | } |
| 542 | ret = gpio_direction_output(gpio, |
| 543 | !pdata->vbus_pin_active_low[i]); |
| 544 | if (ret) { |
| 545 | dev_err(&pdev->dev, |
| 546 | "can't put vbus gpio %d as output %d\n", |
| 547 | gpio, !pdata->vbus_pin_active_low[i]); |
| 548 | gpio_free(gpio); |
| 549 | continue; |
| 550 | } |
| 551 | |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 552 | ohci_at91_usb_set_power(pdata, i, 1); |
| 553 | } |
| 554 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 555 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 556 | if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 557 | continue; |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 558 | gpio = pdata->overcurrent_pin[i]; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 559 | |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 560 | ret = gpio_request(gpio, "ohci_overcurrent"); |
| 561 | if (ret) { |
| 562 | dev_err(&pdev->dev, |
| 563 | "can't request overcurrent gpio %d\n", |
| 564 | gpio); |
| 565 | continue; |
| 566 | } |
| 567 | |
| 568 | ret = gpio_direction_input(gpio); |
| 569 | if (ret) { |
| 570 | dev_err(&pdev->dev, |
| 571 | "can't configure overcurrent gpio %d as input\n", |
| 572 | gpio); |
| 573 | gpio_free(gpio); |
| 574 | continue; |
| 575 | } |
| 576 | |
| 577 | ret = request_irq(gpio_to_irq(gpio), |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 578 | ohci_hcd_at91_overcurrent_irq, |
| 579 | IRQF_SHARED, "ohci_overcurrent", pdev); |
| 580 | if (ret) { |
Nicolas Ferre | aaf9f5f | 2012-03-21 16:58:11 +0100 | [diff] [blame] | 581 | gpio_free(gpio); |
| 582 | dev_err(&pdev->dev, |
| 583 | "can't get gpio IRQ for overcurrent\n"); |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 584 | } |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 585 | } |
| 586 | } |
| 587 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 588 | device_init_wakeup(&pdev->dev, 1); |
| 589 | return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 590 | } |
| 591 | |
Bill Pemberton | fb4e98a | 2012-11-19 13:26:20 -0500 | [diff] [blame] | 592 | static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 593 | { |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 594 | struct at91_usbh_data *pdata = dev_get_platdata(&pdev->dev); |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 595 | int i; |
| 596 | |
| 597 | if (pdata) { |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 598 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 599 | if (!gpio_is_valid(pdata->vbus_pin[i])) |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 600 | continue; |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 601 | ohci_at91_usb_set_power(pdata, i, 0); |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 602 | gpio_free(pdata->vbus_pin[i]); |
| 603 | } |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 604 | |
Nicolas Ferre | 0ee6d1e | 2012-03-21 16:53:09 +0100 | [diff] [blame] | 605 | at91_for_each_port(i) { |
Jean-Christophe PLAGNIOL-VILLARD | 8a7a49d | 2011-09-19 15:32:23 +0800 | [diff] [blame] | 606 | if (!gpio_is_valid(pdata->overcurrent_pin[i])) |
Thomas Petazzoni | aa6e52a | 2011-07-13 11:29:17 +0200 | [diff] [blame] | 607 | continue; |
| 608 | free_irq(gpio_to_irq(pdata->overcurrent_pin[i]), pdev); |
| 609 | gpio_free(pdata->overcurrent_pin[i]); |
| 610 | } |
David Brownell | 4bde4a4 | 2007-12-27 11:19:49 -0800 | [diff] [blame] | 611 | } |
| 612 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 613 | device_init_wakeup(&pdev->dev, 0); |
Pete Zaitcev | 421b4bf | 2008-06-01 14:38:43 -0700 | [diff] [blame] | 614 | usb_hcd_at91_remove(platform_get_drvdata(pdev), pdev); |
| 615 | return 0; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | #ifdef CONFIG_PM |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 619 | |
David Brownell | 68ba61b | 2006-04-02 20:26:21 -0800 | [diff] [blame] | 620 | static int |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 621 | 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] | 622 | { |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 623 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 624 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
Majunath Goudar | a9d3840 | 2013-11-13 17:40:17 +0530 | [diff] [blame] | 625 | bool do_wakeup = device_may_wakeup(&pdev->dev); |
| 626 | int ret; |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 627 | |
Majunath Goudar | a9d3840 | 2013-11-13 17:40:17 +0530 | [diff] [blame] | 628 | if (do_wakeup) |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 629 | enable_irq_wake(hcd->irq); |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 630 | |
Majunath Goudar | a9d3840 | 2013-11-13 17:40:17 +0530 | [diff] [blame] | 631 | ret = ohci_suspend(hcd, do_wakeup); |
| 632 | if (ret) { |
| 633 | disable_irq_wake(hcd->irq); |
| 634 | return ret; |
| 635 | } |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 636 | /* |
| 637 | * The integrated transceivers seem unable to notice disconnect, |
| 638 | * reconnect, or wakeup without the 48 MHz clock active. so for |
| 639 | * correctness, always discard connection state (using reset). |
| 640 | * |
| 641 | * REVISIT: some boards will be able to turn VBUS off... |
| 642 | */ |
| 643 | if (at91_suspend_entering_slow_clock()) { |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 644 | ohci->hc_control = ohci_readl(ohci, &ohci->regs->control); |
| 645 | ohci->hc_control &= OHCI_CTRL_RWC; |
| 646 | ohci_writel(ohci, ohci->hc_control, &ohci->regs->control); |
| 647 | ohci->rh_state = OHCI_RH_HALTED; |
| 648 | |
Patrice Vilchez | 869aa98 | 2010-04-28 13:45:40 +0200 | [diff] [blame] | 649 | /* flush the writes */ |
| 650 | (void) ohci_readl (ohci, &ohci->regs->control); |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 651 | at91_stop_clock(); |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 652 | } |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 653 | |
Majunath Goudar | a9d3840 | 2013-11-13 17:40:17 +0530 | [diff] [blame] | 654 | return ret; |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 655 | } |
| 656 | |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 657 | static int ohci_hcd_at91_drv_resume(struct platform_device *pdev) |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 658 | { |
Marc Pignat | 6dde896 | 2007-01-09 14:00:11 -0800 | [diff] [blame] | 659 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 660 | |
| 661 | if (device_may_wakeup(&pdev->dev)) |
| 662 | disable_irq_wake(hcd->irq); |
| 663 | |
Andrew Victor | ed077bb | 2007-02-16 10:18:58 -0800 | [diff] [blame] | 664 | if (!clocked) |
| 665 | at91_start_clock(); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 666 | |
Florian Fainelli | cfa49b4 | 2012-10-08 15:11:29 +0200 | [diff] [blame] | 667 | ohci_resume(hcd, false); |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 668 | return 0; |
| 669 | } |
| 670 | #else |
| 671 | #define ohci_hcd_at91_drv_suspend NULL |
| 672 | #define ohci_hcd_at91_drv_resume NULL |
| 673 | #endif |
| 674 | |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 675 | static struct platform_driver ohci_hcd_at91_driver = { |
| 676 | .probe = ohci_hcd_at91_drv_probe, |
Bill Pemberton | 7690417 | 2012-11-19 13:21:08 -0500 | [diff] [blame] | 677 | .remove = ohci_hcd_at91_drv_remove, |
Aleksey Gorelov | 64a21d0 | 2006-08-08 17:24:08 -0700 | [diff] [blame] | 678 | .shutdown = usb_hcd_platform_shutdown, |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 679 | .suspend = ohci_hcd_at91_drv_suspend, |
| 680 | .resume = ohci_hcd_at91_drv_resume, |
| 681 | .driver = { |
David Brownell | 0365ee0 | 2006-06-19 14:27:20 -0700 | [diff] [blame] | 682 | .name = "at91_ohci", |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 683 | .owner = THIS_MODULE, |
Jean-Christophe PLAGNIOL-VILLARD | 2419730 | 2011-11-21 06:55:18 +0800 | [diff] [blame] | 684 | .of_match_table = of_match_ptr(at91_ohci_dt_ids), |
Andrew Victor | 39a269c | 2006-01-22 10:32:13 -0800 | [diff] [blame] | 685 | }, |
| 686 | }; |
Manjunath Goudar | e3825b4 | 2013-09-21 16:38:42 +0530 | [diff] [blame] | 687 | |
| 688 | static int __init ohci_at91_init(void) |
| 689 | { |
| 690 | if (usb_disabled()) |
| 691 | return -ENODEV; |
| 692 | |
| 693 | pr_info("%s: " DRIVER_DESC "\n", hcd_name); |
| 694 | ohci_init_driver(&ohci_at91_hc_driver, NULL); |
| 695 | |
| 696 | /* |
| 697 | * The Atmel HW has some unusual quirks, which require Atmel-specific |
| 698 | * workarounds. We override certain hc_driver functions here to |
| 699 | * achieve that. We explicitly do not enhance ohci_driver_overrides to |
| 700 | * allow this more easily, since this is an unusual case, and we don't |
| 701 | * want to encourage others to override these functions by making it |
| 702 | * too easy. |
| 703 | */ |
| 704 | |
| 705 | orig_ohci_hub_control = ohci_at91_hc_driver.hub_control; |
| 706 | orig_ohci_hub_status_data = ohci_at91_hc_driver.hub_status_data; |
| 707 | |
| 708 | ohci_at91_hc_driver.hub_status_data = ohci_at91_hub_status_data; |
| 709 | ohci_at91_hc_driver.hub_control = ohci_at91_hub_control; |
| 710 | |
| 711 | return platform_driver_register(&ohci_hcd_at91_driver); |
| 712 | } |
| 713 | module_init(ohci_at91_init); |
| 714 | |
| 715 | static void __exit ohci_at91_cleanup(void) |
| 716 | { |
| 717 | platform_driver_unregister(&ohci_hcd_at91_driver); |
| 718 | } |
| 719 | module_exit(ohci_at91_cleanup); |
| 720 | |
| 721 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 722 | MODULE_LICENSE("GPL"); |
| 723 | MODULE_ALIAS("platform:at91_ohci"); |