Tzachi Perelstein | e96ffe2 | 2007-12-01 11:07:04 -0500 | [diff] [blame] | 1 | /* |
| 2 | * drivers/usb/host/ehci-orion.c |
| 3 | * |
| 4 | * Tzachi Perelstein <tzachi@marvell.com> |
| 5 | * |
| 6 | * This file is licensed under the terms of the GNU General Public |
| 7 | * License version 2. This program is licensed "as is" without any |
| 8 | * warranty of any kind, whether express or implied. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/platform_device.h> |
Lennert Buytenhek | 92aecfa | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 14 | #include <linux/mbus.h> |
Lennert Buytenhek | 705a752 | 2008-03-27 14:51:40 -0400 | [diff] [blame^] | 15 | #include <asm/plat-orion/ehci-orion.h> |
Tzachi Perelstein | e96ffe2 | 2007-12-01 11:07:04 -0500 | [diff] [blame] | 16 | |
| 17 | #define rdl(off) __raw_readl(hcd->regs + (off)) |
| 18 | #define wrl(off, val) __raw_writel((val), hcd->regs + (off)) |
| 19 | |
Tzachi Perelstein | e96ffe2 | 2007-12-01 11:07:04 -0500 | [diff] [blame] | 20 | #define USB_CMD 0x140 |
| 21 | #define USB_MODE 0x1a8 |
Lennert Buytenhek | 92aecfa | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 22 | #define USB_CAUSE 0x310 |
| 23 | #define USB_MASK 0x314 |
| 24 | #define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4)) |
| 25 | #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4)) |
Tzachi Perelstein | e96ffe2 | 2007-12-01 11:07:04 -0500 | [diff] [blame] | 26 | #define USB_IPG 0x360 |
| 27 | #define USB_PHY_PWR_CTRL 0x400 |
| 28 | #define USB_PHY_TX_CTRL 0x420 |
| 29 | #define USB_PHY_RX_CTRL 0x430 |
| 30 | #define USB_PHY_IVREF_CTRL 0x440 |
| 31 | #define USB_PHY_TST_GRP_CTRL 0x450 |
| 32 | |
| 33 | /* |
| 34 | * Implement Orion USB controller specification guidelines |
| 35 | */ |
| 36 | static void orion_usb_setup(struct usb_hcd *hcd) |
| 37 | { |
| 38 | /* |
| 39 | * Clear interrupt cause and mask |
| 40 | */ |
| 41 | wrl(USB_CAUSE, 0); |
| 42 | wrl(USB_MASK, 0); |
| 43 | |
| 44 | /* |
| 45 | * Reset controller |
| 46 | */ |
| 47 | wrl(USB_CMD, rdl(USB_CMD) | 0x2); |
| 48 | while (rdl(USB_CMD) & 0x2); |
| 49 | |
| 50 | /* |
| 51 | * GL# USB-10: Set IPG for non start of frame packets |
| 52 | * Bits[14:8]=0xc |
| 53 | */ |
| 54 | wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00); |
| 55 | |
| 56 | /* |
| 57 | * GL# USB-9: USB 2.0 Power Control |
| 58 | * BG_VSEL[7:6]=0x1 |
| 59 | */ |
| 60 | wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40); |
| 61 | |
| 62 | /* |
| 63 | * GL# USB-1: USB PHY Tx Control - force calibration to '8' |
| 64 | * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8 |
| 65 | */ |
| 66 | wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040); |
| 67 | |
| 68 | /* |
| 69 | * GL# USB-3 GL# USB-9: USB PHY Rx Control |
| 70 | * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0, |
| 71 | * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1 |
| 72 | */ |
| 73 | wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010); |
| 74 | |
| 75 | /* |
| 76 | * GL# USB-3 GL# USB-9: USB PHY IVREF Control |
| 77 | * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0 |
| 78 | */ |
| 79 | wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32); |
| 80 | |
| 81 | /* |
| 82 | * GL# USB-3 GL# USB-9: USB PHY Test Group Control |
| 83 | * REG_FIFO_SQ_RST[15]=0 |
| 84 | */ |
| 85 | wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000); |
| 86 | |
| 87 | /* |
| 88 | * Stop and reset controller |
| 89 | */ |
| 90 | wrl(USB_CMD, rdl(USB_CMD) & ~0x1); |
| 91 | wrl(USB_CMD, rdl(USB_CMD) | 0x2); |
| 92 | while (rdl(USB_CMD) & 0x2); |
| 93 | |
| 94 | /* |
| 95 | * GL# USB-5 Streaming disable REG_USB_MODE[4]=1 |
| 96 | * TBD: This need to be done after each reset! |
| 97 | * GL# USB-4 Setup USB Host mode |
| 98 | */ |
| 99 | wrl(USB_MODE, 0x13); |
| 100 | } |
| 101 | |
| 102 | static int ehci_orion_setup(struct usb_hcd *hcd) |
| 103 | { |
| 104 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); |
| 105 | int retval; |
| 106 | |
| 107 | retval = ehci_halt(ehci); |
| 108 | if (retval) |
| 109 | return retval; |
| 110 | |
| 111 | /* |
| 112 | * data structure init |
| 113 | */ |
| 114 | retval = ehci_init(hcd); |
| 115 | if (retval) |
| 116 | return retval; |
| 117 | |
| 118 | ehci_reset(ehci); |
| 119 | ehci_port_power(ehci, 0); |
| 120 | |
| 121 | return retval; |
| 122 | } |
| 123 | |
| 124 | static const struct hc_driver ehci_orion_hc_driver = { |
| 125 | .description = hcd_name, |
| 126 | .product_desc = "Marvell Orion EHCI", |
| 127 | .hcd_priv_size = sizeof(struct ehci_hcd), |
| 128 | |
| 129 | /* |
| 130 | * generic hardware linkage |
| 131 | */ |
| 132 | .irq = ehci_irq, |
| 133 | .flags = HCD_MEMORY | HCD_USB2, |
| 134 | |
| 135 | /* |
| 136 | * basic lifecycle operations |
| 137 | */ |
| 138 | .reset = ehci_orion_setup, |
| 139 | .start = ehci_run, |
| 140 | #ifdef CONFIG_PM |
| 141 | .suspend = ehci_bus_suspend, |
| 142 | .resume = ehci_bus_resume, |
| 143 | #endif |
| 144 | .stop = ehci_stop, |
| 145 | .shutdown = ehci_shutdown, |
| 146 | |
| 147 | /* |
| 148 | * managing i/o requests and associated device resources |
| 149 | */ |
| 150 | .urb_enqueue = ehci_urb_enqueue, |
| 151 | .urb_dequeue = ehci_urb_dequeue, |
| 152 | .endpoint_disable = ehci_endpoint_disable, |
| 153 | |
| 154 | /* |
| 155 | * scheduling support |
| 156 | */ |
| 157 | .get_frame_number = ehci_get_frame, |
| 158 | |
| 159 | /* |
| 160 | * root hub support |
| 161 | */ |
| 162 | .hub_status_data = ehci_hub_status_data, |
| 163 | .hub_control = ehci_hub_control, |
| 164 | .bus_suspend = ehci_bus_suspend, |
| 165 | .bus_resume = ehci_bus_resume, |
| 166 | }; |
| 167 | |
Lennert Buytenhek | 92aecfa | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 168 | static void __init |
| 169 | ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, |
| 170 | struct mbus_dram_target_info *dram) |
| 171 | { |
| 172 | int i; |
| 173 | |
| 174 | for (i = 0; i < 4; i++) { |
| 175 | wrl(USB_WINDOW_CTRL(i), 0); |
| 176 | wrl(USB_WINDOW_BASE(i), 0); |
| 177 | } |
| 178 | |
| 179 | for (i = 0; i < dram->num_cs; i++) { |
| 180 | struct mbus_dram_window *cs = dram->cs + i; |
| 181 | |
| 182 | wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) | |
| 183 | (cs->mbus_attr << 8) | |
| 184 | (dram->mbus_dram_target_id << 4) | 1); |
| 185 | wrl(USB_WINDOW_BASE(i), cs->base); |
| 186 | } |
| 187 | } |
| 188 | |
Tzachi Perelstein | e96ffe2 | 2007-12-01 11:07:04 -0500 | [diff] [blame] | 189 | static int __init ehci_orion_drv_probe(struct platform_device *pdev) |
| 190 | { |
Lennert Buytenhek | 92aecfa | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 191 | struct orion_ehci_data *pd = pdev->dev.platform_data; |
Tzachi Perelstein | e96ffe2 | 2007-12-01 11:07:04 -0500 | [diff] [blame] | 192 | struct resource *res; |
| 193 | struct usb_hcd *hcd; |
| 194 | struct ehci_hcd *ehci; |
| 195 | void __iomem *regs; |
| 196 | int irq, err; |
| 197 | |
| 198 | if (usb_disabled()) |
| 199 | return -ENODEV; |
| 200 | |
| 201 | pr_debug("Initializing Orion-SoC USB Host Controller\n"); |
| 202 | |
| 203 | irq = platform_get_irq(pdev, 0); |
| 204 | if (irq <= 0) { |
| 205 | dev_err(&pdev->dev, |
| 206 | "Found HC with no IRQ. Check %s setup!\n", |
| 207 | pdev->dev.bus_id); |
| 208 | err = -ENODEV; |
| 209 | goto err1; |
| 210 | } |
| 211 | |
| 212 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 213 | if (!res) { |
| 214 | dev_err(&pdev->dev, |
| 215 | "Found HC with no register addr. Check %s setup!\n", |
| 216 | pdev->dev.bus_id); |
| 217 | err = -ENODEV; |
| 218 | goto err1; |
| 219 | } |
| 220 | |
| 221 | if (!request_mem_region(res->start, res->end - res->start + 1, |
| 222 | ehci_orion_hc_driver.description)) { |
| 223 | dev_dbg(&pdev->dev, "controller already in use\n"); |
| 224 | err = -EBUSY; |
| 225 | goto err1; |
| 226 | } |
| 227 | |
| 228 | regs = ioremap(res->start, res->end - res->start + 1); |
| 229 | if (regs == NULL) { |
| 230 | dev_dbg(&pdev->dev, "error mapping memory\n"); |
| 231 | err = -EFAULT; |
| 232 | goto err2; |
| 233 | } |
| 234 | |
| 235 | hcd = usb_create_hcd(&ehci_orion_hc_driver, |
| 236 | &pdev->dev, pdev->dev.bus_id); |
| 237 | if (!hcd) { |
| 238 | err = -ENOMEM; |
| 239 | goto err3; |
| 240 | } |
| 241 | |
| 242 | hcd->rsrc_start = res->start; |
| 243 | hcd->rsrc_len = res->end - res->start + 1; |
| 244 | hcd->regs = regs; |
| 245 | |
| 246 | ehci = hcd_to_ehci(hcd); |
| 247 | ehci->caps = hcd->regs + 0x100; |
| 248 | ehci->regs = hcd->regs + 0x100 + |
| 249 | HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); |
| 250 | ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); |
| 251 | ehci->is_tdi_rh_tt = 1; |
| 252 | ehci->sbrn = 0x20; |
| 253 | |
| 254 | /* |
Lennert Buytenhek | 92aecfa | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 255 | * (Re-)program MBUS remapping windows if we are asked to. |
| 256 | */ |
| 257 | if (pd != NULL && pd->dram != NULL) |
| 258 | ehci_orion_conf_mbus_windows(hcd, pd->dram); |
| 259 | |
| 260 | /* |
Tzachi Perelstein | e96ffe2 | 2007-12-01 11:07:04 -0500 | [diff] [blame] | 261 | * setup Orion USB controller |
| 262 | */ |
| 263 | orion_usb_setup(hcd); |
| 264 | |
| 265 | err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED); |
| 266 | if (err) |
| 267 | goto err4; |
| 268 | |
| 269 | return 0; |
| 270 | |
| 271 | err4: |
| 272 | usb_put_hcd(hcd); |
| 273 | err3: |
| 274 | iounmap(regs); |
| 275 | err2: |
| 276 | release_mem_region(res->start, res->end - res->start + 1); |
| 277 | err1: |
| 278 | dev_err(&pdev->dev, "init %s fail, %d\n", |
| 279 | pdev->dev.bus_id, err); |
| 280 | |
| 281 | return err; |
| 282 | } |
| 283 | |
| 284 | static int __exit ehci_orion_drv_remove(struct platform_device *pdev) |
| 285 | { |
| 286 | struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| 287 | |
| 288 | usb_remove_hcd(hcd); |
| 289 | iounmap(hcd->regs); |
| 290 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); |
| 291 | usb_put_hcd(hcd); |
| 292 | |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | MODULE_ALIAS("platform:orion-ehci"); |
| 297 | |
| 298 | static struct platform_driver ehci_orion_driver = { |
| 299 | .probe = ehci_orion_drv_probe, |
| 300 | .remove = __exit_p(ehci_orion_drv_remove), |
| 301 | .shutdown = usb_hcd_platform_shutdown, |
| 302 | .driver.name = "orion-ehci", |
| 303 | }; |