diff options
Diffstat (limited to 'drivers/usb/musb/musb_dsps.c')
| -rw-r--r-- | drivers/usb/musb/musb_dsps.c | 125 |
1 files changed, 75 insertions, 50 deletions
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index ff5f112053d..cf08966af5c 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -124,8 +124,44 @@ struct dsps_glue { const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */ struct timer_list timer[2]; /* otg_workaround timer */ unsigned long last_timer[2]; /* last timer data for each instance */ + u32 __iomem *usb_ctrl[2]; }; +#define DSPS_AM33XX_CONTROL_MODULE_PHYS_0 0x44e10620 +#define DSPS_AM33XX_CONTROL_MODULE_PHYS_1 0x44e10628 + +static const resource_size_t dsps_control_module_phys[] = { + DSPS_AM33XX_CONTROL_MODULE_PHYS_0, + DSPS_AM33XX_CONTROL_MODULE_PHYS_1, +}; + +/** + * musb_dsps_phy_control - phy on/off + * @glue: struct dsps_glue * + * @id: musb instance + * @on: flag for phy to be switched on or off + * + * This is to enable the PHY using usb_ctrl register in system control + * module space. + * + * XXX: This function will be removed once we have a seperate driver for + * control module + */ +static void musb_dsps_phy_control(struct dsps_glue *glue, u8 id, u8 on) +{ + u32 usbphycfg; + + usbphycfg = readl(glue->usb_ctrl[id]); + + if (on) { + usbphycfg &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN); + usbphycfg |= USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN; + } else { + usbphycfg |= USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN; + } + + writel(usbphycfg, glue->usb_ctrl[id]); +} /** * dsps_musb_enable - enable interrupts */ @@ -365,11 +401,9 @@ static irqreturn_t dsps_interrupt(int irq, void *hci) static int dsps_musb_init(struct musb *musb) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); const struct dsps_musb_wrapper *wrp = glue->wrp; - struct omap_musb_board_data *data = plat->board_data; void __iomem *reg_base = musb->ctrl_base; u32 rev, val; int status; @@ -377,7 +411,8 @@ static int dsps_musb_init(struct musb *musb) /* mentor core register starts at offset of 0x400 from musb base */ musb->mregs += wrp->musb_core_offset; - /* Get the NOP PHY */ + /* NOP driver needs change if supporting dual instance */ + usb_nop_xceiv_register(); musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2); if (IS_ERR_OR_NULL(musb->xceiv)) return -ENODEV; @@ -395,8 +430,7 @@ static int dsps_musb_init(struct musb *musb) dsps_writel(reg_base, wrp->control, (1 << wrp->reset)); /* Start the on-chip PHY and its PLL. */ - if (data->set_phy_power) - data->set_phy_power(1); + musb_dsps_phy_control(glue, pdev->id, 1); musb->isr = dsps_interrupt; @@ -418,16 +452,13 @@ err0: static int dsps_musb_exit(struct musb *musb) { struct device *dev = musb->controller; - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct omap_musb_board_data *data = plat->board_data; struct platform_device *pdev = to_platform_device(dev); struct dsps_glue *glue = dev_get_drvdata(dev->parent); del_timer_sync(&glue->timer[pdev->id]); /* Shutdown the on-chip PHY and its PLL. */ - if (data->set_phy_power) - data->set_phy_power(0); + musb_dsps_phy_control(glue, pdev->id, 0); /* NOP driver needs change if supporting dual instance */ usb_put_phy(musb->xceiv); @@ -459,24 +490,33 @@ static int __devinit dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) struct resource *res; struct resource resources[2]; char res_name[11]; - int ret, musbid; + int ret; - /* get memory resource */ - snprintf(res_name, sizeof(res_name), "musb%d", id); - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, res_name); + resources[0].start = dsps_control_module_phys[id]; + resources[0].end = resources[0].start + SZ_4 - 1; + resources[0].flags = IORESOURCE_MEM; + + glue->usb_ctrl[id] = devm_request_and_ioremap(&pdev->dev, resources); + if (glue->usb_ctrl[id] == NULL) { + dev_err(dev, "Failed to obtain usb_ctrl%d memory\n", id); + ret = -ENODEV; + goto err0; + } + + /* first resource is for usbss, so start index from 1 */ + res = platform_get_resource(pdev, IORESOURCE_MEM, id + 1); if (!res) { - dev_err(dev, "%s get mem resource failed\n", res_name); + dev_err(dev, "failed to get memory for instance %d\n", id); ret = -ENODEV; goto err0; } res->parent = NULL; resources[0] = *res; - /* get irq resource */ - snprintf(res_name, sizeof(res_name), "musb%d-irq", id); - res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, res_name); + /* first resource is for usbss, so start index from 1 */ + res = platform_get_resource(pdev, IORESOURCE_IRQ, id + 1); if (!res) { - dev_err(dev, "%s get irq resource failed\n", res_name); + dev_err(dev, "failed to get irq for instance %d\n", id); ret = -ENODEV; goto err0; } @@ -484,22 +524,14 @@ static int __devinit dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) resources[1] = *res; resources[1].name = "mc"; - /* get the musb id */ - musbid = musb_get_id(dev, GFP_KERNEL); - if (musbid < 0) { - dev_err(dev, "failed to allocate musb id\n"); - ret = -ENOMEM; - goto err0; - } /* allocate the child platform device */ - musb = platform_device_alloc("musb-hdrc", musbid); + musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); if (!musb) { dev_err(dev, "failed to allocate musb device\n"); ret = -ENOMEM; - goto err1; + goto err0; } - musb->id = musbid; musb->dev.parent = dev; musb->dev.dma_mask = &musb_dmamask; musb->dev.coherent_dma_mask = musb_dmamask; @@ -556,19 +588,10 @@ static int __devinit dsps_create_musb_pdev(struct dsps_glue *glue, u8 id) err2: platform_device_put(musb); -err1: - musb_put_id(dev, musbid); err0: return ret; } -static void dsps_delete_musb_pdev(struct dsps_glue *glue, u8 id) -{ - musb_put_id(glue->dev, glue->musb[id]->id); - platform_device_del(glue->musb[id]); - platform_device_put(glue->musb[id]); -} - static int __devinit dsps_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; @@ -628,7 +651,7 @@ static int __devinit dsps_probe(struct platform_device *pdev) dev_err(&pdev->dev, "failed to create child pdev\n"); /* release resources of previously created instances */ for (i--; i >= 0 ; i--) - dsps_delete_musb_pdev(glue, i); + platform_device_unregister(glue->musb[i]); goto err3; } } @@ -653,7 +676,7 @@ static int __devexit dsps_remove(struct platform_device *pdev) /* delete the child platform device */ for (i = 0; i < wrp->instances ; i++) - dsps_delete_musb_pdev(glue, i); + platform_device_unregister(glue->musb[i]); /* disable usbss clocks */ pm_runtime_put(&pdev->dev); @@ -666,24 +689,26 @@ static int __devexit dsps_remove(struct platform_device *pdev) #ifdef CONFIG_PM_SLEEP static int dsps_suspend(struct device *dev) { - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct omap_musb_board_data *data = plat->board_data; + struct platform_device *pdev = to_platform_device(dev->parent); + struct dsps_glue *glue = platform_get_drvdata(pdev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + int i; - /* Shutdown the on-chip PHY and its PLL. */ - if (data->set_phy_power) - data->set_phy_power(0); + for (i = 0; i < wrp->instances; i++) + musb_dsps_phy_control(glue, i, 0); return 0; } static int dsps_resume(struct device *dev) { - struct musb_hdrc_platform_data *plat = dev->platform_data; - struct omap_musb_board_data *data = plat->board_data; + struct platform_device *pdev = to_platform_device(dev->parent); + struct dsps_glue *glue = platform_get_drvdata(pdev); + const struct dsps_musb_wrapper *wrp = glue->wrp; + int i; - /* Start the on-chip PHY and its PLL. */ - if (data->set_phy_power) - data->set_phy_power(1); + for (i = 0; i < wrp->instances; i++) + musb_dsps_phy_control(glue, i, 1); return 0; } @@ -719,7 +744,7 @@ static const struct dsps_musb_wrapper ti81xx_driver_data __devinitconst = { .rxep_bitmap = (0xfffe << 16), .musb_core_offset = 0x400, .poll_seconds = 2, - .instances = 2, + .instances = 1, }; static const struct platform_device_id musb_dsps_id_table[] __devinitconst = { |