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 | |
Russell King | f8ce254 | 2006-01-07 16:15:52 +0000 | [diff] [blame] | 17 | #include <linux/clk.h> |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 18 | #include <linux/dma-mapping.h> |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 19 | #include <linux/err.h> |
Jarkko Nikula | 944e1bf | 2008-12-10 17:35:31 -0800 | [diff] [blame] | 20 | #include <linux/gpio.h> |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 21 | #include <linux/io.h> |
| 22 | #include <linux/jiffies.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/usb/otg.h> |
| 26 | #include <linux/platform_device.h> |
| 27 | #include <linux/signal.h> |
| 28 | #include <linux/usb.h> |
| 29 | #include <linux/usb/hcd.h> |
| 30 | |
| 31 | #include "ohci.h" |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <asm/io.h> |
| 34 | #include <asm/mach-types.h> |
| 35 | |
Tony Lindgren | 70c494c | 2012-09-19 10:46:56 -0700 | [diff] [blame] | 36 | #include <mach/mux.h> |
Tony Lindgren | b924b20 | 2012-06-04 00:56:15 -0700 | [diff] [blame] | 37 | |
| 38 | #include <mach/hardware.h> |
| 39 | #include <mach/irqs.h> |
| 40 | #include <mach/usb.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
| 42 | |
| 43 | /* OMAP-1510 OHCI has its own MMU for DMA */ |
| 44 | #define OMAP1510_LB_MEMSIZE 32 /* Should be same as SDRAM size */ |
| 45 | #define OMAP1510_LB_CLOCK_DIV 0xfffec10c |
| 46 | #define OMAP1510_LB_MMU_CTL 0xfffec208 |
| 47 | #define OMAP1510_LB_MMU_LCK 0xfffec224 |
| 48 | #define OMAP1510_LB_MMU_LD_TLB 0xfffec228 |
| 49 | #define OMAP1510_LB_MMU_CAM_H 0xfffec22c |
| 50 | #define OMAP1510_LB_MMU_CAM_L 0xfffec230 |
| 51 | #define OMAP1510_LB_MMU_RAM_H 0xfffec234 |
| 52 | #define OMAP1510_LB_MMU_RAM_L 0xfffec238 |
| 53 | |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 54 | #define DRIVER_DESC "OHCI OMAP driver" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
| 56 | #ifdef CONFIG_TPS65010 |
David Brownell | 6d16bfb | 2008-01-27 18:14:49 +0100 | [diff] [blame] | 57 | #include <linux/i2c/tps65010.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #else |
| 59 | |
| 60 | #define LOW 0 |
| 61 | #define HIGH 1 |
| 62 | |
| 63 | #define GPIO1 1 |
| 64 | |
| 65 | static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value) |
| 66 | { |
| 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | #endif |
| 71 | |
| 72 | extern int usb_disabled(void); |
| 73 | extern int ocpi_enable(void); |
| 74 | |
| 75 | static struct clk *usb_host_ck; |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 76 | static struct clk *usb_dc_ck; |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 77 | |
| 78 | static const char hcd_name[] = "ohci-omap"; |
| 79 | static struct hc_driver __read_mostly ohci_omap_hc_driver; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
| 81 | static void omap_ohci_clock_power(int on) |
| 82 | { |
| 83 | if (on) { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 84 | clk_enable(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | clk_enable(usb_host_ck); |
| 86 | /* guesstimate for T5 == 1x 32K clock + APLL lock time */ |
| 87 | udelay(100); |
| 88 | } else { |
| 89 | clk_disable(usb_host_ck); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 90 | clk_disable(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | } |
| 92 | } |
| 93 | |
| 94 | /* |
| 95 | * Board specific gang-switched transceiver power on/off. |
| 96 | * NOTE: OSK supplies power from DC, not battery. |
| 97 | */ |
| 98 | static int omap_ohci_transceiver_power(int on) |
| 99 | { |
| 100 | if (on) { |
| 101 | if (machine_is_omap_innovator() && cpu_is_omap1510()) |
Tony Lindgren | 4c98dc6 | 2012-10-02 12:39:09 -0700 | [diff] [blame] | 102 | __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL) |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 103 | | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | INNOVATOR_FPGA_CAM_USB_CONTROL); |
| 105 | else if (machine_is_omap_osk()) |
| 106 | tps65010_set_gpio_out_value(GPIO1, LOW); |
| 107 | } else { |
| 108 | if (machine_is_omap_innovator() && cpu_is_omap1510()) |
Tony Lindgren | 4c98dc6 | 2012-10-02 12:39:09 -0700 | [diff] [blame] | 109 | __raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL) |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 110 | & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | INNOVATOR_FPGA_CAM_USB_CONTROL); |
| 112 | else if (machine_is_omap_osk()) |
| 113 | tps65010_set_gpio_out_value(GPIO1, HIGH); |
| 114 | } |
| 115 | |
| 116 | return 0; |
| 117 | } |
| 118 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 119 | #ifdef CONFIG_ARCH_OMAP15XX |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | /* |
| 121 | * OMAP-1510 specific Local Bus clock on/off |
| 122 | */ |
| 123 | static int omap_1510_local_bus_power(int on) |
| 124 | { |
| 125 | if (on) { |
| 126 | omap_writel((1 << 1) | (1 << 0), OMAP1510_LB_MMU_CTL); |
| 127 | udelay(200); |
| 128 | } else { |
| 129 | omap_writel(0, OMAP1510_LB_MMU_CTL); |
| 130 | } |
| 131 | |
| 132 | return 0; |
| 133 | } |
| 134 | |
| 135 | /* |
| 136 | * OMAP-1510 specific Local Bus initialization |
| 137 | * NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE. |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 138 | * See also arch/mach-omap/memory.h for __virt_to_dma() and |
| 139 | * __dma_to_virt() which need to match with the physical |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | * Local Bus address below. |
| 141 | */ |
| 142 | static int omap_1510_local_bus_init(void) |
| 143 | { |
| 144 | unsigned int tlb; |
| 145 | unsigned long lbaddr, physaddr; |
| 146 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 147 | omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | OMAP1510_LB_CLOCK_DIV); |
| 149 | |
| 150 | /* Configure the Local Bus MMU table */ |
| 151 | for (tlb = 0; tlb < OMAP1510_LB_MEMSIZE; tlb++) { |
| 152 | lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET; |
| 153 | physaddr = tlb * 0x00100000 + PHYS_OFFSET; |
| 154 | omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 155 | omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | OMAP1510_LB_MMU_CAM_L); |
| 157 | omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H); |
| 158 | omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L); |
| 159 | omap_writel(tlb << 4, OMAP1510_LB_MMU_LCK); |
| 160 | omap_writel(0x1, OMAP1510_LB_MMU_LD_TLB); |
| 161 | } |
| 162 | |
| 163 | /* Enable the walking table */ |
| 164 | omap_writel(omap_readl(OMAP1510_LB_MMU_CTL) | (1 << 3), OMAP1510_LB_MMU_CTL); |
| 165 | udelay(200); |
| 166 | |
| 167 | return 0; |
| 168 | } |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 169 | #else |
| 170 | #define omap_1510_local_bus_power(x) {} |
| 171 | #define omap_1510_local_bus_init() {} |
| 172 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
| 174 | #ifdef CONFIG_USB_OTG |
| 175 | |
| 176 | static void start_hnp(struct ohci_hcd *ohci) |
| 177 | { |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 178 | struct usb_hcd *hcd = ohci_to_hcd(ohci); |
| 179 | const unsigned port = hcd->self.otg_port - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | unsigned long flags; |
Tony Lindgren | f35ae63 | 2008-07-03 12:24:43 +0300 | [diff] [blame] | 181 | u32 l; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 183 | otg_start_hnp(hcd->phy->otg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | |
| 185 | local_irq_save(flags); |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 186 | hcd->phy->state = OTG_STATE_A_SUSPEND; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | writel (RH_PS_PSS, &ohci->regs->roothub.portstatus [port]); |
Tony Lindgren | f35ae63 | 2008-07-03 12:24:43 +0300 | [diff] [blame] | 188 | l = omap_readl(OTG_CTRL); |
| 189 | l &= ~OTG_A_BUSREQ; |
| 190 | omap_writel(l, OTG_CTRL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | local_irq_restore(flags); |
| 192 | } |
| 193 | |
| 194 | #endif |
| 195 | |
| 196 | /*-------------------------------------------------------------------------*/ |
| 197 | |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 198 | static int ohci_omap_reset(struct usb_hcd *hcd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 200 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
Jingoo Han | d4f09e2 | 2013-07-30 19:59:40 +0900 | [diff] [blame] | 201 | struct omap_usb_config *config = dev_get_platdata(hcd->self.controller); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | int need_transceiver = (config->otg != 0); |
| 203 | int ret; |
| 204 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 205 | dev_dbg(hcd->self.controller, "starting USB Controller\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
| 207 | if (config->otg) { |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 208 | hcd->self.otg_port = config->otg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | /* default/minimum OTG power budget: 8 mA */ |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 210 | hcd->power_budget = 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | } |
| 212 | |
| 213 | /* boards can use OTG transceivers in non-OTG modes */ |
| 214 | need_transceiver = need_transceiver |
| 215 | || machine_is_omap_h2() || machine_is_omap_h3(); |
| 216 | |
Paul Walmsley | d3645d3 | 2012-04-13 06:34:27 -0600 | [diff] [blame] | 217 | /* XXX OMAP16xx only */ |
| 218 | if (config->ocpi_enable) |
| 219 | config->ocpi_enable(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Russell King | c3df1a2 | 2008-09-03 23:59:23 +0100 | [diff] [blame] | 221 | #ifdef CONFIG_USB_OTG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | if (need_transceiver) { |
Greg Kroah-Hartman | ff9cce8 | 2012-07-05 15:35:41 -0700 | [diff] [blame] | 223 | hcd->phy = usb_get_phy(USB_PHY_TYPE_USB2); |
| 224 | if (!IS_ERR_OR_NULL(hcd->phy)) { |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 225 | int status = otg_set_host(hcd->phy->otg, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | &ohci_to_hcd(ohci)->self); |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 227 | dev_dbg(hcd->self.controller, "init %s phy, status %d\n", |
| 228 | hcd->phy->label, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | if (status) { |
Greg Kroah-Hartman | ff9cce8 | 2012-07-05 15:35:41 -0700 | [diff] [blame] | 230 | usb_put_phy(hcd->phy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | return status; |
| 232 | } |
| 233 | } else { |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 234 | dev_err(hcd->self.controller, "can't find phy\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | return -ENODEV; |
| 236 | } |
Dmitry Baryshkov | e8b2445 | 2008-07-06 14:26:30 +0400 | [diff] [blame] | 237 | ohci->start_hnp = start_hnp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | } |
| 239 | #endif |
| 240 | |
| 241 | omap_ohci_clock_power(1); |
| 242 | |
Tony Lindgren | 9b466c3 | 2008-09-04 16:29:55 -0700 | [diff] [blame] | 243 | if (cpu_is_omap15xx()) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | omap_1510_local_bus_power(1); |
| 245 | omap_1510_local_bus_init(); |
| 246 | } |
| 247 | |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 248 | ret = ohci_setup(hcd); |
| 249 | if (ret < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | return ret; |
| 251 | |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 252 | if (config->otg || config->rwc) { |
| 253 | ohci->hc_control = OHCI_CTRL_RWC; |
| 254 | writel(OHCI_CTRL_RWC, &ohci->regs->control); |
| 255 | } |
| 256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | /* board-specific power switching and overcurrent support */ |
| 258 | if (machine_is_omap_osk() || machine_is_omap_innovator()) { |
| 259 | u32 rh = roothub_a (ohci); |
| 260 | |
| 261 | /* power switching (ganged by default) */ |
| 262 | rh &= ~RH_A_NPS; |
| 263 | |
| 264 | /* TPS2045 switch for internal transceiver (port 1) */ |
| 265 | if (machine_is_omap_osk()) { |
Alan Stern | bc96c0a | 2005-04-25 11:21:31 -0400 | [diff] [blame] | 266 | ohci_to_hcd(ohci)->power_budget = 250; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
| 268 | rh &= ~RH_A_NOCP; |
| 269 | |
| 270 | /* gpio9 for overcurrent detction */ |
| 271 | omap_cfg_reg(W8_1610_GPIO9); |
Jarkko Nikula | 944e1bf | 2008-12-10 17:35:31 -0800 | [diff] [blame] | 272 | gpio_request(9, "OHCI overcurrent"); |
David Brownell | 40e3925 | 2008-12-10 17:35:26 -0800 | [diff] [blame] | 273 | gpio_direction_input(9); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
| 275 | /* for paranoia's sake: disable USB.PUEN */ |
| 276 | omap_cfg_reg(W4_USB_HIGHZ); |
| 277 | } |
| 278 | ohci_writel(ohci, rh, &ohci->regs->roothub.a); |
Dmitry Baryshkov | 1133cd8 | 2008-07-06 23:35:01 +0400 | [diff] [blame] | 279 | ohci->flags &= ~OHCI_QUIRK_HUB_POWER; |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 280 | } else if (machine_is_nokia770()) { |
| 281 | /* We require a self-powered hub, which should have |
| 282 | * plenty of power. */ |
| 283 | ohci_to_hcd(ohci)->power_budget = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | /* FIXME khubd hub requests should manage power switching */ |
| 287 | omap_ohci_transceiver_power(1); |
| 288 | |
| 289 | /* board init will have already handled HMC and mux setup. |
| 290 | * any external transceiver should already be initialized |
| 291 | * too, so all configured ports use the right signaling now. |
| 292 | */ |
| 293 | |
| 294 | return 0; |
| 295 | } |
| 296 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | /*-------------------------------------------------------------------------*/ |
| 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | /** |
| 300 | * usb_hcd_omap_probe - initialize OMAP-based HCDs |
| 301 | * Context: !in_interrupt() |
| 302 | * |
| 303 | * Allocates basic resources for this USB host controller, and |
| 304 | * then invokes the start() method for the HCD associated with it |
| 305 | * through the hotplug entry's driver_data. |
| 306 | */ |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 307 | static int usb_hcd_omap_probe (const struct hc_driver *driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | struct platform_device *pdev) |
| 309 | { |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 310 | int retval, irq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | struct usb_hcd *hcd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
| 313 | if (pdev->num_resources != 2) { |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 314 | printk(KERN_ERR "hcd probe: invalid num_resources: %i\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | pdev->num_resources); |
| 316 | return -ENODEV; |
| 317 | } |
| 318 | |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 319 | if (pdev->resource[0].flags != IORESOURCE_MEM |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | || pdev->resource[1].flags != IORESOURCE_IRQ) { |
| 321 | printk(KERN_ERR "hcd probe: invalid resource type\n"); |
| 322 | return -ENODEV; |
| 323 | } |
| 324 | |
Russell King | 953a7e8 | 2009-01-18 12:52:38 +0000 | [diff] [blame] | 325 | usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | if (IS_ERR(usb_host_ck)) |
| 327 | return PTR_ERR(usb_host_ck); |
| 328 | |
Tony Lindgren | 9b466c3 | 2008-09-04 16:29:55 -0700 | [diff] [blame] | 329 | if (!cpu_is_omap15xx()) |
Russell King | 953a7e8 | 2009-01-18 12:52:38 +0000 | [diff] [blame] | 330 | usb_dc_ck = clk_get(&pdev->dev, "usb_dc_ck"); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 331 | else |
Russell King | 953a7e8 | 2009-01-18 12:52:38 +0000 | [diff] [blame] | 332 | usb_dc_ck = clk_get(&pdev->dev, "lb_ck"); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 333 | |
| 334 | if (IS_ERR(usb_dc_ck)) { |
| 335 | clk_put(usb_host_ck); |
| 336 | return PTR_ERR(usb_dc_ck); |
| 337 | } |
| 338 | |
| 339 | |
Kay Sievers | 7071a3c | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 340 | hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | if (!hcd) { |
| 342 | retval = -ENOMEM; |
| 343 | goto err0; |
| 344 | } |
| 345 | hcd->rsrc_start = pdev->resource[0].start; |
| 346 | hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1; |
| 347 | |
| 348 | if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { |
| 349 | dev_dbg(&pdev->dev, "request_mem_region failed\n"); |
| 350 | retval = -EBUSY; |
| 351 | goto err1; |
| 352 | } |
| 353 | |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 354 | hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); |
| 355 | if (!hcd->regs) { |
| 356 | dev_err(&pdev->dev, "can't ioremap OHCI HCD\n"); |
| 357 | retval = -ENOMEM; |
| 358 | goto err2; |
| 359 | } |
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 | } |
Yong Zhang | b5dd18d | 2011-09-07 16:10:52 +0800 | [diff] [blame] | 366 | retval = usb_add_hcd(hcd, irq, 0); |
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 | |
Peter Chen | 3c9740a | 2013-11-05 10:46:02 +0800 | [diff] [blame] | 370 | device_wakeup_enable(hcd->self.controller); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 371 | return 0; |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 372 | err3: |
| 373 | iounmap(hcd->regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | err2: |
| 375 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 376 | err1: |
| 377 | usb_put_hcd(hcd); |
| 378 | err0: |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 379 | clk_put(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | clk_put(usb_host_ck); |
| 381 | return retval; |
| 382 | } |
| 383 | |
| 384 | |
| 385 | /* may be called with controller, bus, and devices active */ |
| 386 | |
| 387 | /** |
| 388 | * usb_hcd_omap_remove - shutdown processing for OMAP-based HCDs |
| 389 | * @dev: USB Host Controller being removed |
| 390 | * Context: !in_interrupt() |
| 391 | * |
| 392 | * Reverses the effect of usb_hcd_omap_probe(), first invoking |
| 393 | * the HCD's stop() method. It is always called from a thread |
| 394 | * context, normally "rmmod", "apmd", or something similar. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | */ |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 396 | static inline void |
| 397 | usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | { |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 399 | dev_dbg(hcd->self.controller, "stopping USB Controller\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | usb_remove_hcd(hcd); |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 401 | omap_ohci_clock_power(0); |
Greg Kroah-Hartman | ff9cce8 | 2012-07-05 15:35:41 -0700 | [diff] [blame] | 402 | if (!IS_ERR_OR_NULL(hcd->phy)) { |
Richard Zhao | c2e935a | 2012-06-13 20:34:12 +0800 | [diff] [blame] | 403 | (void) otg_set_host(hcd->phy->otg, 0); |
Greg Kroah-Hartman | ff9cce8 | 2012-07-05 15:35:41 -0700 | [diff] [blame] | 404 | usb_put_phy(hcd->phy); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 405 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | if (machine_is_omap_osk()) |
Jarkko Nikula | 944e1bf | 2008-12-10 17:35:31 -0800 | [diff] [blame] | 407 | gpio_free(9); |
Russell King | 55c381e | 2008-09-04 14:07:22 +0100 | [diff] [blame] | 408 | iounmap(hcd->regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 410 | usb_put_hcd(hcd); |
David Brownell | bd35078 | 2006-07-31 07:29:39 -0700 | [diff] [blame] | 411 | clk_put(usb_dc_ck); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | clk_put(usb_host_ck); |
| 413 | } |
| 414 | |
| 415 | /*-------------------------------------------------------------------------*/ |
| 416 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 417 | static int ohci_hcd_omap_drv_probe(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 419 | return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | } |
| 421 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 422 | static int ohci_hcd_omap_drv_remove(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 424 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 426 | usb_hcd_omap_remove(hcd, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | /*-------------------------------------------------------------------------*/ |
| 432 | |
| 433 | #ifdef CONFIG_PM |
| 434 | |
Manjunath Goudar | 10abfa1 | 2013-10-04 09:58:13 +0530 | [diff] [blame] | 435 | static int ohci_omap_suspend(struct platform_device *pdev, pm_message_t message) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | { |
Manjunath Goudar | 10abfa1 | 2013-10-04 09:58:13 +0530 | [diff] [blame] | 437 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 438 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
| 439 | bool do_wakeup = device_may_wakeup(&pdev->dev); |
| 440 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 442 | if (time_before(jiffies, ohci->next_statechange)) |
| 443 | msleep(5); |
| 444 | ohci->next_statechange = jiffies; |
| 445 | |
Manjunath Goudar | 10abfa1 | 2013-10-04 09:58:13 +0530 | [diff] [blame] | 446 | ret = ohci_suspend(hcd, do_wakeup); |
| 447 | if (ret) |
| 448 | return ret; |
| 449 | |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 450 | omap_ohci_clock_power(0); |
Manjunath Goudar | 10abfa1 | 2013-10-04 09:58:13 +0530 | [diff] [blame] | 451 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | } |
| 453 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 454 | static int ohci_omap_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | { |
Alan Stern | 43bbb7e | 2008-04-03 18:03:17 -0400 | [diff] [blame] | 456 | struct usb_hcd *hcd = platform_get_drvdata(dev); |
| 457 | struct ohci_hcd *ohci = hcd_to_ohci(hcd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | |
david-b@pacbell.net | b404a5b | 2005-06-29 06:59:14 -0700 | [diff] [blame] | 459 | if (time_before(jiffies, ohci->next_statechange)) |
| 460 | msleep(5); |
| 461 | ohci->next_statechange = jiffies; |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 462 | |
david-b@pacbell.net | b404a5b | 2005-06-29 06:59:14 -0700 | [diff] [blame] | 463 | omap_ohci_clock_power(1); |
Florian Fainelli | cfa49b4 | 2012-10-08 15:11:29 +0200 | [diff] [blame] | 464 | ohci_resume(hcd, false); |
David Brownell | f197b2c | 2005-09-22 22:42:53 -0700 | [diff] [blame] | 465 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | #endif |
| 469 | |
| 470 | /*-------------------------------------------------------------------------*/ |
| 471 | |
| 472 | /* |
| 473 | * Driver definition to register with the OMAP bus |
| 474 | */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 475 | static struct platform_driver ohci_hcd_omap_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | .probe = ohci_hcd_omap_drv_probe, |
| 477 | .remove = ohci_hcd_omap_drv_remove, |
David Brownell | dd9048a | 2006-12-05 03:18:31 -0800 | [diff] [blame] | 478 | .shutdown = usb_hcd_platform_shutdown, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | #ifdef CONFIG_PM |
| 480 | .suspend = ohci_omap_suspend, |
| 481 | .resume = ohci_omap_resume, |
| 482 | #endif |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 483 | .driver = { |
| 484 | .owner = THIS_MODULE, |
| 485 | .name = "ohci", |
| 486 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | }; |
| 488 | |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 489 | static const struct ohci_driver_overrides omap_overrides __initconst = { |
| 490 | .product_desc = "OMAP OHCI", |
| 491 | .reset = ohci_omap_reset |
| 492 | }; |
| 493 | |
| 494 | static int __init ohci_omap_init(void) |
| 495 | { |
| 496 | if (usb_disabled()) |
| 497 | return -ENODEV; |
| 498 | |
| 499 | pr_info("%s: " DRIVER_DESC "\n", hcd_name); |
| 500 | |
| 501 | ohci_init_driver(&ohci_omap_hc_driver, &omap_overrides); |
| 502 | return platform_driver_register(&ohci_hcd_omap_driver); |
| 503 | } |
| 504 | module_init(ohci_omap_init); |
| 505 | |
| 506 | static void __exit ohci_omap_cleanup(void) |
| 507 | { |
| 508 | platform_driver_unregister(&ohci_hcd_omap_driver); |
| 509 | } |
| 510 | module_exit(ohci_omap_cleanup); |
| 511 | |
| 512 | MODULE_DESCRIPTION(DRIVER_DESC); |
Kay Sievers | f4fce61 | 2008-04-10 21:29:22 -0700 | [diff] [blame] | 513 | MODULE_ALIAS("platform:ohci"); |
Manjunath Goudar | de57a15 | 2013-09-21 16:38:39 +0530 | [diff] [blame] | 514 | MODULE_LICENSE("GPL"); |