Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * OHCI HCD (Host Controller Driver) for USB. |
| 3 | * |
| 4 | * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> |
| 5 | * (C) Copyright 2000-2005 David Brownell |
| 6 | * (C) Copyright 2002 Hewlett-Packard Company |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * OMAP Bus Glue |
| 9 | * |
| 10 | * Modified for OMAP by Tony Lindgren <tony@atomide.com> |
| 11 | * Based on the 2.4 OMAP OHCI driver originally done by MontaVista Software Inc. |
| 12 | * and on ohci-sa1111.c by Christopher Hoover <ch@hpl.hp.com> |
| 13 | * |
| 14 | * This file is licenced under the GPL. |
| 15 | */ |
| 16 | |
Thomas Gleixner | d54b5ca | 2006-07-01 19:29:44 -0700 | [diff] [blame] | 17 | #include <linux/signal.h> /* IRQF_DISABLED */ |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 18 | #include <linux/jiffies.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 19 | #include <linux/platform_device.h> |
Russell King | f8ce254 | 2006-01-07 16:15:52 +0000 | [diff] [blame] | 20 | #include <linux/clk.h> |
Jarkko Nikula | 944e1bf | 2008-12-10 17:35:31 -0800 | [diff] [blame] | 21 | #include <linux/gpio.h> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 22 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 23 | #include <mach/hardware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <asm/io.h> |
| 25 | #include <asm/mach-types.h> |
| 26 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 27 | #include <mach/mux.h> |
| 28 | #include <mach/irqs.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 29 | #include <mach/fpga.h> |
| 30 | #include <mach/usb.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
| 32 | |
| 33 | /* OMAP-1510 OHCI has its own MMU for DMA */ |
| 34 | #define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */ |
| 35 | #define OMAP1510_LB_CLOCK_DIV 0xfffec10c |
| 36 | #define OMAP1510_LB_MMU_CTL 0xfffec208 |
| 37 | #define OMAP1510_LB_MMU_LCK 0xfffec224 |
| 38 | #define OMAP1510_LB_MMU_LD_TLB 0xfffec228 |
| 39 | #define OMAP1510_LB_MMU_CAM_H 0xfffec22c |
| 40 | #define OMAP1510_LB_MMU_CAM_L 0xfffec230 |
| 41 | #define OMAP1510_LB_MMU_RAM_H 0xfffec234 |
| 42 | #define OMAP1510_LB_MMU_RAM_L 0xfffec238 |
| 43 | |
| 44 | |
| 45 | #ifndef CONFIG_ARCH_OMAP |
| 46 | #error "This file is OMAP bus glue. CONFIG_OMAP must be defined." |
| 47 | #endif |
| 48 | |
| 49 | #ifdef CONFIG_TPS65010 |
David Brownell | 6d16bfb | 2008-01-27 18:14:49 +0100 | [diff] [blame] | 50 | #include <linux/i2c/tps65010.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #else |
| 52 | |
| 53 | #define LOW 0 |
| 54 | #define HIGH 1 |
| 55 | |
| 56 | #define GPIO1 1 |
| 57 | |
| 58 | static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value) |
| 59 | { |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | #endif |
| 64 | |
| 65 | extern int usb_disabled(void); |
| 66 | extern int ocpi_enable(void); |
| 67 | |
| 68 | static struct clk *usb_host_ck; |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 69 | static struct clk *usb_dc_ck; |
| 70 | static int host_enabled; |
| 71 | static int host_initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
| 73 | static void omap_ohci_clock_power(int on) |
| 74 | { |
| 75 | if (on) { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 76 | clk_enable(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | clk_enable(usb_host_ck); |
| 78 | /* guesstimate for T5 == 1x 32K clock + APLL lock time */ |
| 79 | udelay(100); |
| 80 | } else { |
| 81 | clk_disable(usb_host_ck); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 82 | clk_disable(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | } |
| 84 | } |
| 85 | |
| 86 | /* |
| 87 | * Board specific gang-switched transceiver power on/off. |
| 88 | * NOTE: OSK supplies power from DC, not battery. |
| 89 | */ |
| 90 | static int omap_ohci_transceiver_power(int on) |
| 91 | { |
| 92 | if (on) { |
| 93 | if (machine_is_omap_innovator() && cpu_is_omap1510()) |
| 94 | fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL) |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 95 | | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | INNOVATOR_FPGA_CAM_USB_CONTROL); |
| 97 | else if (machine_is_omap_osk()) |
| 98 | tps65010_set_gpio_out_value(GPIO1, LOW); |
| 99 | } else { |
| 100 | if (machine_is_omap_innovator() && cpu_is_omap1510()) |
| 101 | fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL) |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 102 | & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | INNOVATOR_FPGA_CAM_USB_CONTROL); |
| 104 | else if (machine_is_omap_osk()) |
| 105 | tps65010_set_gpio_out_value(GPIO1, HIGH); |
| 106 | } |
| 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 111 | #ifdef CONFIG_ARCH_OMAP15XX |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | /* |
| 113 | * OMAP-1510 specific Local Bus clock on/off |
| 114 | */ |
| 115 | static int omap_1510_local_bus_power(int on) |
| 116 | { |
| 117 | if (on) { |
| 118 | omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL); |
| 119 | udelay(200); |
| 120 | } else { |
| 121 | omap_writel(0, OMAP1510_LB_MMU_CTL); |
| 122 | } |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * OMAP-1510 specific Local Bus initialization |
| 129 | * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE. |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 130 | * See also arch/mach-omap/memory.h for __virt_to_dma() and |
| 131 | * __dma_to_virt() which need to match with the physical |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | * Local Bus address below. |
| 133 | */ |
| 134 | static int omap_1510_local_bus_init(void) |
| 135 | { |
| 136 | unsigned int tlb; |
| 137 | unsigned long lbaddr, physaddr; |
| 138 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 139 | omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | OMAP1510_LB_CLOCK_DIV); |
| 141 | |
| 142 | /* Configure the Local Bus MMU table */ |
| 143 | for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) { |
| 144 | lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET; |
| 145 | physaddr = tlb * 0x00100000 + PHYS_OFFSET; |
| 146 | omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 147 | omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | OMAP1510_LB_MMU_CAM_L); |
| 149 | omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H); |
| 150 | omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L); |
| 151 | omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK); |
| 152 | omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB); |
| 153 | } |
| 154 | |
| 155 | /* Enable the walking table */ |
| 156 | omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL); |
| 157 | udelay(200); |
| 158 | |
| 159 | return 0; |
| 160 | } |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 161 | #else |
| 162 | #define omap_1510_local_bus_power(x) {} |
| 163 | #define omap_1510_local_bus_init() {} |
| 164 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | #ifdef CONFIG_USB_OTG |
| 167 | |
| 168 | static void start_hnp(struct ohci_hcd *ohci) |
| 169 | { |
| 170 | const unsigned port = ohci_to_hcd(ohci)->self.otg_port - 1; |
| 171 | unsigned long flags; |
Tony Lindgren | f35ae63 | 2008-07-03 12:24:43 +0300 | [diff] [blame] | 172 | u32 l; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
| 174 | otg_start_hnp(ohci->transceiver); |
| 175 | |
| 176 | local_irq_save(flags); |
| 177 | ohci->transceiver->state = OTG_STATE_A_SUSPEND; |
| 178 | writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]); |
Tony Lindgren | f35ae63 | 2008-07-03 12:24:43 +0300 | [diff] [blame] | 179 | l = omap_readl(OTG_CTRL); |
| 180 | l &= ~OTG_A_BUSREQ; |
| 181 | omap_writel(l, OTG_CTRL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | local_irq_restore(flags); |
| 183 | } |
| 184 | |
| 185 | #endif |
| 186 | |
| 187 | /*-------------------------------------------------------------------------*/ |
| 188 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 189 | static int ohci_omap_init(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 191 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| 192 | struct omap_usb_config *config = hcd->self.controller->platform_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | int need_transceiver = (config->otg != 0); |
| 194 | int ret; |
| 195 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 196 | dev_dbg(hcd->self.controller, "starting USB Controller\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
| 198 | if (config->otg) { |
| 199 | ohci_to_hcd(ohci)->self.otg_port = config->otg; |
| 200 | /* default/minimum OTG power budget: 8 mA */ |
Alan Stern | bc96c0a | 2005-04-25 11:21:31 -0400 | [diff] [blame] | 201 | ohci_to_hcd(ohci)->power_budget = 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | /* boards can use OTG transceivers in non-OTG modes */ |
| 205 | need_transceiver = need_transceiver |
| 206 | || machine_is_omap_h2() || machine_is_omap_h3(); |
| 207 | |
| 208 | if (cpu_is_omap16xx()) |
| 209 | ocpi_enable(); |
| 210 | |
Russell King | c3df1a2 | 2008-09-03 23:59:23 +0100 | [diff] [blame] | 211 | #ifdef CONFIG_USB_OTG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | if (need_transceiver) { |
| 213 | ohci->transceiver = otg_get_transceiver(); |
| 214 | if (ohci->transceiver) { |
| 215 | int status = otg_set_host(ohci->transceiver, |
| 216 | &ohci_to_hcd(ohci)->self); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 217 | dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | ohci->transceiver->label, status); |
| 219 | if (status) { |
| 220 | if (ohci->transceiver) |
| 221 | put_device(ohci->transceiver->dev); |
| 222 | return status; |
| 223 | } |
| 224 | } else { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 225 | dev_err(hcd->self.controller, "can't find transceiver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | return -ENODEV; |
| 227 | } |
Dmitry Baryshkov | e8b2445 | 2008-07-06 14:26:30 +0400 | [diff] [blame] | 228 | ohci->start_hnp = start_hnp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | } |
| 230 | #endif |
| 231 | |
| 232 | omap_ohci_clock_power(1); |
| 233 | |
Tony Lindgren | 9b466c3 | 2008-09-04 16:29:55 -0700 | [diff] [blame] | 234 | if (cpu_is_omap15xx()) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | omap_1510_local_bus_power(1); |
| 236 | omap_1510_local_bus_init(); |
| 237 | } |
| 238 | |
| 239 | if ((ret = ohci_init(ohci)) < 0) |
| 240 | return ret; |
| 241 | |
| 242 | /* board-specific power switching and overcurrent support */ |
| 243 | if (machine_is_omap_osk() || machine_is_omap_innovator()) { |
| 244 | u32 rh = roothub_a (ohci); |
| 245 | |
| 246 | /* power switching (ganged by default) */ |
| 247 | rh &= ~RH_A_NPS; |
| 248 | |
| 249 | /* TPS2045 switch for internal transceiver (port 1) */ |
| 250 | if (machine_is_omap_osk()) { |
Alan Stern | bc96c0a | 2005-04-25 11:21:31 -0400 | [diff] [blame] | 251 | ohci_to_hcd(ohci)->power_budget = 250; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
| 253 | rh &= ~RH_A_NOCP; |
| 254 | |
| 255 | /* gpio9 for overcurrent detction */ |
| 256 | omap_cfg_reg(W8_1610_GPIO9); |
Jarkko Nikula | 944e1bf | 2008-12-10 17:35:31 -0800 | [diff] [blame] | 257 | gpio_request(9, "OHCI overcurrent"); |
David Brownell | 40e3925 | 2008-12-10 17:35:26 -0800 | [diff] [blame] | 258 | gpio_direction_input(9); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | /* for paranoia's sake: disable USB.PUEN */ |
| 261 | omap_cfg_reg(W4_USB_HIGHZ); |
| 262 | } |
| 263 | ohci_writel(ohci, rh, &ohci->regs->roothub.a); |
Dmitry Baryshkov | 1133cd8 | 2008-07-06 23:35:01 +0400 | [diff] [blame] | 264 | ohci->flags &= ~OHCI_QUIRK_HUB_POWER; |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 265 | } else if (machine_is_nokia770()) { |
| 266 | /* We require a self-powered hub, which should have |
| 267 | * plenty of power. */ |
| 268 | ohci_to_hcd(ohci)->power_budget = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | /* FIXME khubd hub requests should manage power switching */ |
| 272 | omap_ohci_transceiver_power(1); |
| 273 | |
| 274 | /* board init will have already handled HMC and mux setup. |
| 275 | * any external transceiver should already be initialized |
| 276 | * too, so all configured ports use the right signaling now. |
| 277 | */ |
| 278 | |
| 279 | return 0; |
| 280 | } |
| 281 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 282 | static void ohci_omap_stop(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 284 | dev_dbg(hcd->self.controller, "stopping USB Controller\n"); |
Anand Gadiyar | 715bfc2 | 2009-07-14 16:41:00 +0530 | [diff] [blame] | 285 | ohci_stop(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | omap_ohci_clock_power(0); |
| 287 | } |
| 288 | |
| 289 | |
| 290 | /*-------------------------------------------------------------------------*/ |
| 291 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | /** |
| 293 | * usb_hcd_omap_probe - initialize OMAP-based HCDs |
| 294 | * Context: !in_interrupt() |
| 295 | * |
| 296 | * Allocates basic resources for this USB host controller, and |
| 297 | * then invokes the start() method for the HCD associated with it |
| 298 | * through the hotplug entry's driver_data. |
| 299 | */ |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 300 | static int usb_hcd_omap_probe (const struct hc_driver *driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | struct platform_device *pdev) |
| 302 | { |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 303 | int retval, irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | struct usb_hcd *hcd = 0; |
| 305 | struct ohci_hcd *ohci; |
| 306 | |
| 307 | if (pdev->num_resources != 2) { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 308 | printk(KERN_ERR "hcd probe: invalid num_resources: %i\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | pdev->num_resources); |
| 310 | return -ENODEV; |
| 311 | } |
| 312 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 313 | if (pdev->resource[0].flags != IORESOURCE_MEM |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | || pdev->resource[1].flags != IORESOURCE_IRQ) { |
| 315 | printk(KERN_ERR "hcd probe: invalid resource type\n"); |
| 316 | return -ENODEV; |
| 317 | } |
| 318 | |
Russell King | 953a7e8 | 2009-01-18 12:52:38 +0000 | [diff] [blame] | 319 | usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | if (IS_ERR(usb_host_ck)) |
| 321 | return PTR_ERR(usb_host_ck); |
| 322 | |
Tony Lindgren | 9b466c3 | 2008-09-04 16:29:55 -0700 | [diff] [blame] | 323 | if (!cpu_is_omap15xx()) |
Russell King | 953a7e8 | 2009-01-18 12:52:38 +0000 | [diff] [blame] | 324 | usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck"); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 325 | else |
Russell King | 953a7e8 | 2009-01-18 12:52:38 +0000 | [diff] [blame] | 326 | usb_dc_ck = clk_get(&pdev->dev, "lb_ck"); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 327 | |
| 328 | if (IS_ERR(usb_dc_ck)) { |
| 329 | clk_put(usb_host_ck); |
| 330 | return PTR_ERR(usb_dc_ck); |
| 331 | } |
| 332 | |
| 333 | |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 334 | hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | if (!hcd) { |
| 336 | retval = -ENOMEM; |
| 337 | goto err0; |
| 338 | } |
| 339 | hcd->rsrc_start = pdev->resource[0].start; |
| 340 | hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; |
| 341 | |
| 342 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| 343 | dev_dbg(&pdev->dev, "request_mem_region failed\n"); |
| 344 | retval = -EBUSY; |
| 345 | goto err1; |
| 346 | } |
| 347 | |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 348 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 349 | if (!hcd->regs) { |
| 350 | dev_err(&pdev->dev, "can't ioremap OHCI HCD\n"); |
| 351 | retval = -ENOMEM; |
| 352 | goto err2; |
| 353 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
| 355 | ohci = hcd_to_ohci(hcd); |
| 356 | ohci_hcd_init(ohci); |
| 357 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 358 | host_initialized = 0; |
| 359 | host_enabled = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 361 | irq = platform_get_irq(pdev, 0); |
| 362 | if (irq < 0) { |
| 363 | retval = -ENXIO; |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 364 | goto err3; |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 365 | } |
Thomas Gleixner | d54b5ca | 2006-07-01 19:29:44 -0700 | [diff] [blame] | 366 | retval = usb_add_hcd(hcd, irq, IRQF_DISABLED); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 367 | if (retval) |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 368 | goto err3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 370 | host_initialized = 1; |
| 371 | |
| 372 | if (!host_enabled) |
| 373 | omap_ohci_clock_power(0); |
| 374 | |
| 375 | return 0; |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 376 | err3: |
| 377 | iounmap(hcd->regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | err2: |
| 379 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 380 | err1: |
| 381 | usb_put_hcd(hcd); |
| 382 | err0: |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 383 | clk_put(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | clk_put(usb_host_ck); |
| 385 | return retval; |
| 386 | } |
| 387 | |
| 388 | |
| 389 | /* may be called with controller, bus, and devices active */ |
| 390 | |
| 391 | /** |
| 392 | * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs |
| 393 | * @dev: USB Host Controller being removed |
| 394 | * Context: !in_interrupt() |
| 395 | * |
| 396 | * Reverses the effect of usb_hcd_omap_probe(), first invoking |
| 397 | * the HCD's stop() method. It is always called from a thread |
| 398 | * context, normally "rmmod", "apmd", or something similar. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | */ |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 400 | static inline void |
| 401 | usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 403 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 404 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | usb_remove_hcd(hcd); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 406 | if (ohci->transceiver) { |
| 407 | (void) otg_set_host(ohci->transceiver, 0); |
| 408 | put_device(ohci->transceiver->dev); |
| 409 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | if (machine_is_omap_osk()) |
Jarkko Nikula | 944e1bf | 2008-12-10 17:35:31 -0800 | [diff] [blame] | 411 | gpio_free(9); |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 412 | iounmap(hcd->regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 414 | usb_put_hcd(hcd); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 415 | clk_put(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | clk_put(usb_host_ck); |
| 417 | } |
| 418 | |
| 419 | /*-------------------------------------------------------------------------*/ |
| 420 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 421 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | ohci_omap_start (struct usb_hcd *hcd) |
| 423 | { |
| 424 | struct omap_usb_config *config; |
| 425 | struct ohci_hcd *ohci = hcd_to_ohci (hcd); |
| 426 | int ret; |
| 427 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 428 | if (!host_enabled) |
| 429 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | config = hcd->self.controller->platform_data; |
David Brownell | d413984 | 2006-08-04 11:31:55 -0700 | [diff] [blame] | 431 | if (config->otg || config->rwc) { |
| 432 | ohci->hc_control = OHCI_CTRL_RWC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | writel(OHCI_CTRL_RWC, &ohci->regs->control); |
David Brownell | d413984 | 2006-08-04 11:31:55 -0700 | [diff] [blame] | 434 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
| 436 | if ((ret = ohci_run (ohci)) < 0) { |
| 437 | dev_err(hcd->self.controller, "can't start\n"); |
| 438 | ohci_stop (hcd); |
| 439 | return ret; |
| 440 | } |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | /*-------------------------------------------------------------------------*/ |
| 445 | |
| 446 | static const struct hc_driver ohci_omap_hc_driver = { |
| 447 | .description = hcd_name, |
| 448 | .product_desc = "OMAP OHCI", |
| 449 | .hcd_priv_size = sizeof(struct ohci_hcd), |
| 450 | |
| 451 | /* |
| 452 | * generic hardware linkage |
| 453 | */ |
| 454 | .irq = ohci_irq, |
| 455 | .flags = HCD_USB11 | HCD_MEMORY, |
| 456 | |
| 457 | /* |
| 458 | * basic lifecycle operations |
| 459 | */ |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 460 | .reset = ohci_omap_init, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | .start = ohci_omap_start, |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 462 | .stop = ohci_omap_stop, |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 463 | .shutdown = ohci_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | /* |
| 466 | * managing i/o requests and associated device resources |
| 467 | */ |
| 468 | .urb_enqueue = ohci_urb_enqueue, |
| 469 | .urb_dequeue = ohci_urb_dequeue, |
| 470 | .endpoint_disable = ohci_endpoint_disable, |
| 471 | |
| 472 | /* |
| 473 | * scheduling support |
| 474 | */ |
| 475 | .get_frame_number = ohci_get_frame, |
| 476 | |
| 477 | /* |
| 478 | * root hub support |
| 479 | */ |
| 480 | .hub_status_data = ohci_hub_status_data, |
| 481 | .hub_control = ohci_hub_control, |
David Brownell | 8ad7fe1 | 2005-09-13 19:59:11 -0700 | [diff] [blame] | 482 | #ifdef CONFIG_PM |
Alan Stern | 0c0382e | 2005-10-13 17:08:02 -0400 | [diff] [blame] | 483 | .bus_suspend = ohci_bus_suspend, |
| 484 | .bus_resume = ohci_bus_resume, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | #endif |
| 486 | .start_port_reset = ohci_start_port_reset, |
| 487 | }; |
| 488 | |
| 489 | /*-------------------------------------------------------------------------*/ |
| 490 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 491 | static int ohci_hcd_omap_drv_probe(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 493 | return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | } |
| 495 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 496 | static int ohci_hcd_omap_drv_remove(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 498 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 500 | usb_hcd_omap_remove(hcd, dev); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 501 | platform_set_drvdata(dev, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | |
| 503 | return 0; |
| 504 | } |
| 505 | |
| 506 | /*-------------------------------------------------------------------------*/ |
| 507 | |
| 508 | #ifdef CONFIG_PM |
| 509 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 510 | static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 512 | struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 514 | if (time_before(jiffies, ohci->next_statechange)) |
| 515 | msleep(5); |
| 516 | ohci->next_statechange = jiffies; |
| 517 | |
| 518 | omap_ohci_clock_power(0); |
| 519 | ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED; |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 520 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | } |
| 522 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 523 | static int ohci_omap_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | { |
Alan Stern | 43bbb7e | 2008-04-03 18:03:17 -0400 | [diff] [blame] | 525 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
| 526 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
david-b@pacbell.net | b404a5b | 2005-06-29 06:59:14 -0700 | [diff] [blame] | 528 | if (time_before(jiffies, ohci->next_statechange)) |
| 529 | msleep(5); |
| 530 | ohci->next_statechange = jiffies; |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 531 | |
david-b@pacbell.net | b404a5b | 2005-06-29 06:59:14 -0700 | [diff] [blame] | 532 | omap_ohci_clock_power(1); |
Alan Stern | 43bbb7e | 2008-04-03 18:03:17 -0400 | [diff] [blame] | 533 | ohci_finish_controller_resume(hcd); |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 534 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | #endif |
| 538 | |
| 539 | /*-------------------------------------------------------------------------*/ |
| 540 | |
| 541 | /* |
| 542 | * Driver definition to register with the OMAP bus |
| 543 | */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 544 | static struct platform_driver ohci_hcd_omap_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | .probe = ohci_hcd_omap_drv_probe, |
| 546 | .remove = ohci_hcd_omap_drv_remove, |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 547 | .shutdown = usb_hcd_platform_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | #ifdef CONFIG_PM |
| 549 | .suspend = ohci_omap_suspend, |
| 550 | .resume = ohci_omap_resume, |
| 551 | #endif |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 552 | .driver = { |
| 553 | .owner = THIS_MODULE, |
| 554 | .name = "ohci", |
| 555 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | }; |
| 557 | |
Kay Sievers | f4fce61 | 2008-04-10 21:29:22 -0700 | [diff] [blame] | 558 | MODULE_ALIAS("platform:ohci"); |