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path: root/drivers/usb/host/ehci-omap.c
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Diffstat (limited to 'drivers/usb/host/ehci-omap.c')
-rw-r--r--drivers/usb/host/ehci-omap.c114
1 files changed, 59 insertions, 55 deletions
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index c30435499a02..ec21f4a4a056 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -115,9 +115,8 @@ static void omap_ehci_erratum_i693(struct ehci_hcd *ehci)
115 clk_disable(usbhost_p2_fck); 115 clk_disable(usbhost_p2_fck);
116} 116}
117 117
118static void omap_ehci_soft_phy_reset(struct platform_device *pdev, u8 port) 118static void omap_ehci_soft_phy_reset(struct usb_hcd *hcd, u8 port)
119{ 119{
120 struct usb_hcd *hcd = dev_get_drvdata(&pdev->dev);
121 unsigned long timeout = jiffies + msecs_to_jiffies(1000); 120 unsigned long timeout = jiffies + msecs_to_jiffies(1000);
122 unsigned reg = 0; 121 unsigned reg = 0;
123 122
@@ -139,12 +138,63 @@ static void omap_ehci_soft_phy_reset(struct platform_device *pdev, u8 port)
139 cpu_relax(); 138 cpu_relax();
140 139
141 if (time_after(jiffies, timeout)) { 140 if (time_after(jiffies, timeout)) {
142 dev_dbg(&pdev->dev, "phy reset operation timed out\n"); 141 dev_dbg(hcd->self.controller,
142 "phy reset operation timed out\n");
143 break; 143 break;
144 } 144 }
145 } 145 }
146} 146}
147 147
148static int omap_ehci_init(struct usb_hcd *hcd)
149{
150 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
151 int rc;
152 struct ehci_hcd_omap_platform_data *pdata;
153
154 pdata = hcd->self.controller->platform_data;
155 if (pdata->phy_reset) {
156 if (gpio_is_valid(pdata->reset_gpio_port[0]))
157 gpio_request_one(pdata->reset_gpio_port[0],
158 GPIOF_OUT_INIT_LOW, "USB1 PHY reset");
159
160 if (gpio_is_valid(pdata->reset_gpio_port[1]))
161 gpio_request_one(pdata->reset_gpio_port[1],
162 GPIOF_OUT_INIT_LOW, "USB2 PHY reset");
163
164 /* Hold the PHY in RESET for enough time till DIR is high */
165 udelay(10);
166 }
167
168 /* Soft reset the PHY using PHY reset command over ULPI */
169 if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
170 omap_ehci_soft_phy_reset(hcd, 0);
171 if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
172 omap_ehci_soft_phy_reset(hcd, 1);
173
174 /* we know this is the memory we want, no need to ioremap again */
175 ehci->caps = hcd->regs;
176
177 rc = ehci_setup(hcd);
178
179 if (pdata->phy_reset) {
180 /* Hold the PHY in RESET for enough time till
181 * PHY is settled and ready
182 */
183 udelay(10);
184
185 if (gpio_is_valid(pdata->reset_gpio_port[0]))
186 gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
187
188 if (gpio_is_valid(pdata->reset_gpio_port[1]))
189 gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
190 }
191
192 /* root ports should always stay powered */
193 ehci_port_power(ehci, 1);
194
195 return rc;
196}
197
148static int omap_ehci_hub_control( 198static int omap_ehci_hub_control(
149 struct usb_hcd *hcd, 199 struct usb_hcd *hcd,
150 u16 typeReq, 200 u16 typeReq,
@@ -219,7 +269,6 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
219 struct resource *res; 269 struct resource *res;
220 struct usb_hcd *hcd; 270 struct usb_hcd *hcd;
221 void __iomem *regs; 271 void __iomem *regs;
222 struct ehci_hcd *omap_ehci;
223 int ret = -ENODEV; 272 int ret = -ENODEV;
224 int irq; 273 int irq;
225 int i; 274 int i;
@@ -281,18 +330,6 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
281 } 330 }
282 } 331 }
283 332
284 /* Hold PHYs in reset while initializing EHCI controller */
285 if (pdata->phy_reset) {
286 if (gpio_is_valid(pdata->reset_gpio_port[0]))
287 gpio_set_value_cansleep(pdata->reset_gpio_port[0], 0);
288
289 if (gpio_is_valid(pdata->reset_gpio_port[1]))
290 gpio_set_value_cansleep(pdata->reset_gpio_port[1], 0);
291
292 /* Hold the PHY in RESET for enough time till DIR is high */
293 udelay(10);
294 }
295
296 pm_runtime_enable(dev); 333 pm_runtime_enable(dev);
297 pm_runtime_get_sync(dev); 334 pm_runtime_get_sync(dev);
298 335
@@ -308,49 +345,12 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
308 ehci_write(regs, EHCI_INSNREG04, 345 ehci_write(regs, EHCI_INSNREG04,
309 EHCI_INSNREG04_DISABLE_UNSUSPEND); 346 EHCI_INSNREG04_DISABLE_UNSUSPEND);
310 347
311 /* Soft reset the PHY using PHY reset command over ULPI */
312 if (pdata->port_mode[0] == OMAP_EHCI_PORT_MODE_PHY)
313 omap_ehci_soft_phy_reset(pdev, 0);
314 if (pdata->port_mode[1] == OMAP_EHCI_PORT_MODE_PHY)
315 omap_ehci_soft_phy_reset(pdev, 1);
316
317 omap_ehci = hcd_to_ehci(hcd);
318 omap_ehci->sbrn = 0x20;
319
320 /* we know this is the memory we want, no need to ioremap again */
321 omap_ehci->caps = hcd->regs;
322 omap_ehci->regs = hcd->regs
323 + HC_LENGTH(ehci, readl(&omap_ehci->caps->hc_capbase));
324
325 dbg_hcs_params(omap_ehci, "reset");
326 dbg_hcc_params(omap_ehci, "reset");
327
328 /* cache this readonly data; minimize chip reads */
329 omap_ehci->hcs_params = readl(&omap_ehci->caps->hcs_params);
330
331 ehci_reset(omap_ehci);
332 ret = usb_add_hcd(hcd, irq, IRQF_SHARED); 348 ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
333 if (ret) { 349 if (ret) {
334 dev_err(dev, "failed to add hcd with err %d\n", ret); 350 dev_err(dev, "failed to add hcd with err %d\n", ret);
335 goto err_add_hcd; 351 goto err_pm_runtime;
336 } 352 }
337 353
338 if (pdata->phy_reset) {
339 /* Hold the PHY in RESET for enough time till
340 * PHY is settled and ready
341 */
342 udelay(10);
343
344 if (gpio_is_valid(pdata->reset_gpio_port[0]))
345 gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
346
347 if (gpio_is_valid(pdata->reset_gpio_port[1]))
348 gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
349 }
350
351 /* root ports should always stay powered */
352 ehci_port_power(omap_ehci, 1);
353
354 /* get clocks */ 354 /* get clocks */
355 utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk"); 355 utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
356 if (IS_ERR(utmi_p1_fck)) { 356 if (IS_ERR(utmi_p1_fck)) {
@@ -422,8 +422,12 @@ err_utmi_p1_fck:
422 clk_put(utmi_p1_fck); 422 clk_put(utmi_p1_fck);
423 423
424err_add_hcd: 424err_add_hcd:
425 usb_remove_hcd(hcd);
426
427err_pm_runtime:
425 disable_put_regulator(pdata); 428 disable_put_regulator(pdata);
426 pm_runtime_put_sync(dev); 429 pm_runtime_put_sync(dev);
430 usb_put_hcd(hcd);
427 431
428err_io: 432err_io:
429 iounmap(regs); 433 iounmap(regs);
@@ -506,7 +510,7 @@ static const struct hc_driver ehci_omap_hc_driver = {
506 /* 510 /*
507 * basic lifecycle operations 511 * basic lifecycle operations
508 */ 512 */
509 .reset = ehci_init, 513 .reset = omap_ehci_init,
510 .start = ehci_run, 514 .start = ehci_run,
511 .stop = ehci_stop, 515 .stop = ehci_stop,
512 .shutdown = ehci_shutdown, 516 .shutdown = ehci_shutdown,