From ca632a0d2fec10e62377a78a424d68c90f2e4345 Mon Sep 17 00:00:00 2001 From: George Cherian Date: Wed, 16 Jul 2014 18:37:05 +0530 Subject: usb: dwc3: omap: remove x_major calculation from revision register Remove the x_major calculation logic from the wrapper revision register to differentiate between OMAP5 and AM437x. This was done to find the register offsets of wrapper register. Now that We do it using dt compatible, remove the whole logic. Signed-off-by: George Cherian Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 39 +++++++-------------------------------- 1 file changed, 7 insertions(+), 32 deletions(-) (limited to 'drivers/usb/dwc3/dwc3-omap.c') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 4af4c3567656..25a6075ef319 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -77,10 +77,6 @@ #define USBOTGSS_DEV_EBC_EN 0x0110 #define USBOTGSS_DEBUG_OFFSET 0x0600 -/* REVISION REGISTER */ -#define USBOTGSS_REVISION_XMAJOR(reg) ((reg >> 8) & 0x7) -#define USBOTGSS_REVISION_XMAJOR1 1 -#define USBOTGSS_REVISION_XMAJOR2 2 /* SYSCONFIG REGISTER */ #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) @@ -129,7 +125,6 @@ struct dwc3_omap { u32 irq_eoi_offset; u32 debug_offset; u32 irq0_offset; - u32 revision; u32 dma_status:1; @@ -397,7 +392,6 @@ static int dwc3_omap_probe(struct platform_device *pdev) int irq; int utmi_mode = 0; - int x_major; u32 reg; @@ -448,32 +442,13 @@ static int dwc3_omap_probe(struct platform_device *pdev) goto err0; } - reg = dwc3_omap_readl(omap->base, USBOTGSS_REVISION); - omap->revision = reg; - x_major = USBOTGSS_REVISION_XMAJOR(reg); - - /* Differentiate between OMAP5 and AM437x */ - switch (x_major) { - case USBOTGSS_REVISION_XMAJOR1: - case USBOTGSS_REVISION_XMAJOR2: - omap->irq_eoi_offset = 0; - omap->irq0_offset = 0; - omap->irqmisc_offset = 0; - omap->utmi_otg_offset = 0; - omap->debug_offset = 0; - break; - default: - /* Default to the latest revision */ - omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; - omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; - omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; - omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; - omap->debug_offset = USBOTGSS_DEBUG_OFFSET; - break; - } - - /* For OMAP5(ES2.0) and AM437x x_major is 2 even though there are - * changes in wrapper registers, Using dt compatible for aegis + /* + * Differentiate between OMAP5 and AM437x. + * + * For OMAP5(ES2.0) and AM437x wrapper revision is same, even + * though there are changes in wrapper register offsets. + * + * Using dt compatible to differentiate AM437x. */ if (of_device_is_compatible(node, "ti,am437x-dwc3")) { -- cgit v1.2.3 From 30fef1a97fb6551abb50b5208993726b878fe40f Mon Sep 17 00:00:00 2001 From: George Cherian Date: Wed, 16 Jul 2014 18:37:06 +0530 Subject: usb: dwc3: omap: add dwc3_omap_map_offset() function Move map offset to its own separate function. Improve code readability, decrease the dwc3_probe() size. Signed-off-by: George Cherian Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 38 ++++++++++++++++++++++---------------- 1 file changed, 22 insertions(+), 16 deletions(-) (limited to 'drivers/usb/dwc3/dwc3-omap.c') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 25a6075ef319..22fca6291ff5 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -378,6 +378,27 @@ static int dwc3_omap_vbus_notifier(struct notifier_block *nb, return NOTIFY_DONE; } +static void dwc3_omap_map_offset(struct dwc3_omap *omap) +{ + struct device_node *node = omap->dev->of_node; + + /* + * Differentiate between OMAP5 and AM437x. + * + * For OMAP5(ES2.0) and AM437x wrapper revision is same, even + * though there are changes in wrapper register offsets. + * + * Using dt compatible to differentiate AM437x. + */ + if (of_device_is_compatible(node, "ti,am437x-dwc3")) { + omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; + omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; + omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; + omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; + omap->debug_offset = USBOTGSS_DEBUG_OFFSET; + } +} + static int dwc3_omap_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; @@ -442,22 +463,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) goto err0; } - /* - * Differentiate between OMAP5 and AM437x. - * - * For OMAP5(ES2.0) and AM437x wrapper revision is same, even - * though there are changes in wrapper register offsets. - * - * Using dt compatible to differentiate AM437x. - */ - - if (of_device_is_compatible(node, "ti,am437x-dwc3")) { - omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET; - omap->irq0_offset = USBOTGSS_IRQ0_OFFSET; - omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET; - omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET; - omap->debug_offset = USBOTGSS_DEBUG_OFFSET; - } + dwc3_omap_map_offset(omap); reg = dwc3_omap_read_utmi_status(omap); -- cgit v1.2.3 From d2f0cf89ca2deca59cc4ca0c80c14100831428db Mon Sep 17 00:00:00 2001 From: George Cherian Date: Wed, 16 Jul 2014 18:37:07 +0530 Subject: usb: dwc3: omap: add dwc3_omap_set_utmi_mode() function Move find and set the utmi mode to its own separate function. Improve code readability, decrease the dwc3_probe() size. Signed-off-by: George Cherian Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 44 +++++++++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 19 deletions(-) (limited to 'drivers/usb/dwc3/dwc3-omap.c') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 22fca6291ff5..6a90b96c9d14 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -399,6 +399,30 @@ static void dwc3_omap_map_offset(struct dwc3_omap *omap) } } +static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) +{ + u32 reg; + struct device_node *node = omap->dev->of_node; + int utmi_mode = 0; + + reg = dwc3_omap_read_utmi_status(omap); + + of_property_read_u32(node, "utmi-mode", &utmi_mode); + + switch (utmi_mode) { + case DWC3_OMAP_UTMI_MODE_SW: + reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE; + break; + case DWC3_OMAP_UTMI_MODE_HW: + reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE; + break; + default: + dev_dbg(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode); + } + + dwc3_omap_write_utmi_status(omap, reg); +} + static int dwc3_omap_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; @@ -412,8 +436,6 @@ static int dwc3_omap_probe(struct platform_device *pdev) int ret; int irq; - int utmi_mode = 0; - u32 reg; void __iomem *base; @@ -464,23 +486,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) } dwc3_omap_map_offset(omap); - - reg = dwc3_omap_read_utmi_status(omap); - - of_property_read_u32(node, "utmi-mode", &utmi_mode); - - switch (utmi_mode) { - case DWC3_OMAP_UTMI_MODE_SW: - reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE; - break; - case DWC3_OMAP_UTMI_MODE_HW: - reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE; - break; - default: - dev_dbg(dev, "UNKNOWN utmi mode %d\n", utmi_mode); - } - - dwc3_omap_write_utmi_status(omap, reg); + dwc3_omap_set_utmi_mode(omap); /* check the DMA Status */ reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG); -- cgit v1.2.3 From 025b431b0ed3d4d3363427661c53ed8b60487a44 Mon Sep 17 00:00:00 2001 From: George Cherian Date: Wed, 16 Jul 2014 18:37:08 +0530 Subject: usb: dwc3: omap: add dwc3_omap_extcon_register function Move the extcon related code to its own function. Improve code readability, decrease the dwc3_probe() size. Signed-off-by: George Cherian Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 65 ++++++++++++++++++++++++++------------------ 1 file changed, 39 insertions(+), 26 deletions(-) (limited to 'drivers/usb/dwc3/dwc3-omap.c') diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 6a90b96c9d14..961295d7042f 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -423,6 +423,42 @@ static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap) dwc3_omap_write_utmi_status(omap, reg); } +static int dwc3_omap_extcon_register(struct dwc3_omap *omap) +{ + u32 ret; + struct device_node *node = omap->dev->of_node; + struct extcon_dev *edev; + + if (of_property_read_bool(node, "extcon")) { + edev = extcon_get_edev_by_phandle(omap->dev, 0); + if (IS_ERR(edev)) { + dev_vdbg(omap->dev, "couldn't get extcon device\n"); + return -EPROBE_DEFER; + } + + omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier; + ret = extcon_register_interest(&omap->extcon_vbus_dev, + edev->name, "USB", + &omap->vbus_nb); + if (ret < 0) + dev_vdbg(omap->dev, "failed to register notifier for USB\n"); + + omap->id_nb.notifier_call = dwc3_omap_id_notifier; + ret = extcon_register_interest(&omap->extcon_id_dev, + edev->name, "USB-HOST", + &omap->id_nb); + if (ret < 0) + dev_vdbg(omap->dev, "failed to register notifier for USB-HOST\n"); + + if (extcon_get_cable_state(edev, "USB") == true) + dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); + if (extcon_get_cable_state(edev, "USB-HOST") == true) + dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); + } + + return 0; +} + static int dwc3_omap_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; @@ -430,7 +466,6 @@ static int dwc3_omap_probe(struct platform_device *pdev) struct dwc3_omap *omap; struct resource *res; struct device *dev = &pdev->dev; - struct extcon_dev *edev; struct regulator *vbus_reg = NULL; int ret; @@ -502,31 +537,9 @@ static int dwc3_omap_probe(struct platform_device *pdev) dwc3_omap_enable_irqs(omap); - if (of_property_read_bool(node, "extcon")) { - edev = extcon_get_edev_by_phandle(dev, 0); - if (IS_ERR(edev)) { - dev_vdbg(dev, "couldn't get extcon device\n"); - ret = -EPROBE_DEFER; - goto err2; - } - - omap->vbus_nb.notifier_call = dwc3_omap_vbus_notifier; - ret = extcon_register_interest(&omap->extcon_vbus_dev, - edev->name, "USB", &omap->vbus_nb); - if (ret < 0) - dev_vdbg(dev, "failed to register notifier for USB\n"); - omap->id_nb.notifier_call = dwc3_omap_id_notifier; - ret = extcon_register_interest(&omap->extcon_id_dev, edev->name, - "USB-HOST", &omap->id_nb); - if (ret < 0) - dev_vdbg(dev, - "failed to register notifier for USB-HOST\n"); - - if (extcon_get_cable_state(edev, "USB") == true) - dwc3_omap_set_mailbox(omap, OMAP_DWC3_VBUS_VALID); - if (extcon_get_cable_state(edev, "USB-HOST") == true) - dwc3_omap_set_mailbox(omap, OMAP_DWC3_ID_GROUND); - } + ret = dwc3_omap_extcon_register(omap); + if (ret < 0) + goto err2; ret = of_platform_populate(node, NULL, NULL, dev); if (ret) { -- cgit v1.2.3