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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-11 17:12:27 -0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-11-11 17:13:16 -0800 |
commit | 3a3f2e50951faaac1c67b5c6c0c70dec5b150e9b (patch) | |
tree | e27ce9aa85d26b978096a1eb6acbf4e297488953 /drivers/usb/musb/musb_dsps.c | |
parent | 8e06c6a7f4404f10e6630932dffcb06de023a7a2 (diff) | |
parent | d928cd2ef8f7f4194e479d4a66452901ec82ccda (diff) | |
download | linux-3a3f2e50951faaac1c67b5c6c0c70dec5b150e9b.tar.bz2 |
Merge tag 'musb-for-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
USB musb merge from Felipe:
"usb: musb: patches for v3.8 merge window
We have here the usual set of cleanups for the MUSB driver; a
big set of patches converting platform_device_del() and
platform_device_put() into platform_device_unregister().
Another big set was applied converting to module_platform_driver()
macro in order to reduce some boilerplate code from all glue
layers.
Other than that, we had a series fixing one known silicon errata
where we couldn't read a few registers. In order to fix that
we're now using shadow variables for reads and only writing
to the registers which are known to break functionality when
read."
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 ff5f112053d2..cf08966af5c2 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 = { |