diff options
author | George Cherian <george.cherian@ti.com> | 2013-06-12 09:23:46 (GMT) |
---|---|---|
committer | Felipe Balbi <balbi@ti.com> | 2013-06-12 20:57:13 (GMT) |
commit | ff7307b534258c8864c356d15c52a84d0a5fbb35 (patch) | |
tree | 999253ddfa2d02226c76f9153191244740c16ab9 | |
parent | 1e2a064c7fa19ec6a9bfbe11cdc9bec34c7834a1 (diff) | |
download | linux-ff7307b534258c8864c356d15c52a84d0a5fbb35.tar.xz |
usb: dwc3: omap: initialize the register offset values for omap5 and AM437x
This patch Initializes the register offset values depending
on the X_MAJOR of USBOTGSS_REVISION register. Also adds register
offset defines and new debug register defines.
X_MAJOR is 2 for both OMAP5 and AM437x. But both have different
glue register layout. Differentiate AM437x using dt compatible.
Register offsets are cached in dwc3_omap struct for reg reads
and writes.
Signed-off-by: George Cherian <george.cherian@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
-rw-r--r-- | drivers/usb/dwc3/dwc3-omap.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index f67ff4c..54dd6fe 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -61,21 +61,38 @@ #define USBOTGSS_REVISION 0x0000 #define USBOTGSS_SYSCONFIG 0x0010 #define USBOTGSS_IRQ_EOI 0x0020 +#define USBOTGSS_EOI_OFFSET 0x0008 #define USBOTGSS_IRQSTATUS_RAW_0 0x0024 #define USBOTGSS_IRQSTATUS_0 0x0028 #define USBOTGSS_IRQENABLE_SET_0 0x002c #define USBOTGSS_IRQENABLE_CLR_0 0x0030 +#define USBOTGSS_IRQ0_OFFSET 0x0004 #define USBOTGSS_IRQSTATUS_RAW_1 0x0034 #define USBOTGSS_IRQSTATUS_1 0x0038 #define USBOTGSS_IRQENABLE_SET_1 0x003c #define USBOTGSS_IRQENABLE_CLR_1 0x0040 +#define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030 +#define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034 +#define USBOTGSS_IRQSTATUS_MISC 0x0038 +#define USBOTGSS_IRQENABLE_SET_MISC 0x003c +#define USBOTGSS_IRQENABLE_CLR_MISC 0x0040 +#define USBOTGSS_IRQMISC_OFFSET 0x03fc #define USBOTGSS_UTMI_OTG_CTRL 0x0080 #define USBOTGSS_UTMI_OTG_STATUS 0x0084 +#define USBOTGSS_UTMI_OTG_OFFSET 0x0480 +#define USBOTGSS_TXFIFO_DEPTH 0x0508 +#define USBOTGSS_RXFIFO_DEPTH 0x050c #define USBOTGSS_MMRAM_OFFSET 0x0100 #define USBOTGSS_FLADJ 0x0104 #define USBOTGSS_DEBUG_CFG 0x0108 #define USBOTGSS_DEBUG_DATA 0x010c +#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) @@ -300,6 +317,7 @@ static int dwc3_omap_probe(struct platform_device *pdev) int irq; int utmi_mode = 0; + int x_major; u32 reg; @@ -356,6 +374,42 @@ 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,AM437x and others*/ + 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 + */ + + 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; + } + reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); of_property_read_u32(node, "utmi-mode", &utmi_mode); @@ -423,6 +477,9 @@ static const struct of_device_id of_dwc3_match[] = { { .compatible = "ti,dwc3" }, + { + .compatible = "ti,am437x-dwc3" + }, { }, }; MODULE_DEVICE_TABLE(of, of_dwc3_match); |