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path: root/drivers/usb/dwc3/dwc3-omap.c
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Diffstat (limited to 'drivers/usb/dwc3/dwc3-omap.c')
-rw-r--r--drivers/usb/dwc3/dwc3-omap.c251
1 files changed, 192 insertions, 59 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 34638b92500d..077f110bd746 100644
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -61,21 +61,46 @@
#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_IRQSTATUS_RAW_1 0x0034
-#define USBOTGSS_IRQSTATUS_1 0x0038
-#define USBOTGSS_IRQENABLE_SET_1 0x003c
-#define USBOTGSS_IRQENABLE_CLR_1 0x0040
+#define USBOTGSS_IRQ0_OFFSET 0x0004
+#define USBOTGSS_IRQSTATUS_RAW_1 0x0030
+#define USBOTGSS_IRQSTATUS_1 0x0034
+#define USBOTGSS_IRQENABLE_SET_1 0x0038
+#define USBOTGSS_IRQENABLE_CLR_1 0x003c
+#define USBOTGSS_IRQSTATUS_RAW_2 0x0040
+#define USBOTGSS_IRQSTATUS_2 0x0044
+#define USBOTGSS_IRQENABLE_SET_2 0x0048
+#define USBOTGSS_IRQENABLE_CLR_2 0x004c
+#define USBOTGSS_IRQSTATUS_RAW_3 0x0050
+#define USBOTGSS_IRQSTATUS_3 0x0054
+#define USBOTGSS_IRQENABLE_SET_3 0x0058
+#define USBOTGSS_IRQENABLE_CLR_3 0x005c
+#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)
@@ -85,17 +110,17 @@
/* IRQS0 BITS */
#define USBOTGSS_IRQO_COREIRQ_ST (1 << 0)
-/* IRQ1 BITS */
-#define USBOTGSS_IRQ1_DMADISABLECLR (1 << 17)
-#define USBOTGSS_IRQ1_OEVT (1 << 16)
-#define USBOTGSS_IRQ1_DRVVBUS_RISE (1 << 13)
-#define USBOTGSS_IRQ1_CHRGVBUS_RISE (1 << 12)
-#define USBOTGSS_IRQ1_DISCHRGVBUS_RISE (1 << 11)
-#define USBOTGSS_IRQ1_IDPULLUP_RISE (1 << 8)
-#define USBOTGSS_IRQ1_DRVVBUS_FALL (1 << 5)
-#define USBOTGSS_IRQ1_CHRGVBUS_FALL (1 << 4)
-#define USBOTGSS_IRQ1_DISCHRGVBUS_FALL (1 << 3)
-#define USBOTGSS_IRQ1_IDPULLUP_FALL (1 << 0)
+/* IRQMISC BITS */
+#define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17)
+#define USBOTGSS_IRQMISC_OEVT (1 << 16)
+#define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13)
+#define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12)
+#define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11)
+#define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8)
+#define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5)
+#define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4)
+#define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3)
+#define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0)
/* UTMI_OTG_CTRL REGISTER */
#define USBOTGSS_UTMI_OTG_CTRL_DRVVBUS (1 << 5)
@@ -122,6 +147,12 @@ struct dwc3_omap {
void __iomem *base;
u32 utmi_otg_status;
+ u32 utmi_otg_offset;
+ u32 irqmisc_offset;
+ u32 irq_eoi_offset;
+ u32 debug_offset;
+ u32 irq0_offset;
+ u32 revision;
u32 dma_status:1;
};
@@ -138,6 +169,58 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)
writel(value, base + offset);
}
+static u32 dwc3_omap_read_utmi_status(struct dwc3_omap *omap)
+{
+ return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS +
+ omap->utmi_otg_offset);
+}
+
+static void dwc3_omap_write_utmi_status(struct dwc3_omap *omap, u32 value)
+{
+ dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS +
+ omap->utmi_otg_offset, value);
+
+}
+
+static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap)
+{
+ return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0 -
+ omap->irq0_offset);
+}
+
+static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value)
+{
+ dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 -
+ omap->irq0_offset, value);
+
+}
+
+static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap)
+{
+ return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_MISC +
+ omap->irqmisc_offset);
+}
+
+static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value)
+{
+ dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC +
+ omap->irqmisc_offset, value);
+
+}
+
+static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value)
+{
+ dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC +
+ omap->irqmisc_offset, value);
+
+}
+
+static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value)
+{
+ dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 -
+ omap->irq0_offset, value);
+}
+
int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status)
{
u32 val;
@@ -150,38 +233,38 @@ int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status)
case OMAP_DWC3_ID_GROUND:
dev_dbg(omap->dev, "ID GND\n");
- val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
+ val = dwc3_omap_read_utmi_status(omap);
val &= ~(USBOTGSS_UTMI_OTG_STATUS_IDDIG
| USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
| USBOTGSS_UTMI_OTG_STATUS_SESSEND);
val |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID
| USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT;
- dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val);
+ dwc3_omap_write_utmi_status(omap, val);
break;
case OMAP_DWC3_VBUS_VALID:
dev_dbg(omap->dev, "VBUS Connect\n");
- val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
+ val = dwc3_omap_read_utmi_status(omap);
val &= ~USBOTGSS_UTMI_OTG_STATUS_SESSEND;
val |= USBOTGSS_UTMI_OTG_STATUS_IDDIG
| USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
| USBOTGSS_UTMI_OTG_STATUS_SESSVALID
| USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT;
- dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val);
+ dwc3_omap_write_utmi_status(omap, val);
break;
case OMAP_DWC3_ID_FLOAT:
case OMAP_DWC3_VBUS_OFF:
dev_dbg(omap->dev, "VBUS Disconnect\n");
- val = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
+ val = dwc3_omap_read_utmi_status(omap);
val &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSVALID
| USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
| USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT);
val |= USBOTGSS_UTMI_OTG_STATUS_SESSEND
| USBOTGSS_UTMI_OTG_STATUS_IDDIG;
- dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, val);
+ dwc3_omap_write_utmi_status(omap, val);
break;
default:
@@ -199,44 +282,45 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
spin_lock(&omap->lock);
- reg = dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_1);
+ reg = dwc3_omap_read_irqmisc_status(omap);
- if (reg & USBOTGSS_IRQ1_DMADISABLECLR) {
+ if (reg & USBOTGSS_IRQMISC_DMADISABLECLR) {
dev_dbg(omap->dev, "DMA Disable was Cleared\n");
omap->dma_status = false;
}
- if (reg & USBOTGSS_IRQ1_OEVT)
+ if (reg & USBOTGSS_IRQMISC_OEVT)
dev_dbg(omap->dev, "OTG Event\n");
- if (reg & USBOTGSS_IRQ1_DRVVBUS_RISE)
+ if (reg & USBOTGSS_IRQMISC_DRVVBUS_RISE)
dev_dbg(omap->dev, "DRVVBUS Rise\n");
- if (reg & USBOTGSS_IRQ1_CHRGVBUS_RISE)
+ if (reg & USBOTGSS_IRQMISC_CHRGVBUS_RISE)
dev_dbg(omap->dev, "CHRGVBUS Rise\n");
- if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_RISE)
+ if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_RISE)
dev_dbg(omap->dev, "DISCHRGVBUS Rise\n");
- if (reg & USBOTGSS_IRQ1_IDPULLUP_RISE)
+ if (reg & USBOTGSS_IRQMISC_IDPULLUP_RISE)
dev_dbg(omap->dev, "IDPULLUP Rise\n");
- if (reg & USBOTGSS_IRQ1_DRVVBUS_FALL)
+ if (reg & USBOTGSS_IRQMISC_DRVVBUS_FALL)
dev_dbg(omap->dev, "DRVVBUS Fall\n");
- if (reg & USBOTGSS_IRQ1_CHRGVBUS_FALL)
+ if (reg & USBOTGSS_IRQMISC_CHRGVBUS_FALL)
dev_dbg(omap->dev, "CHRGVBUS Fall\n");
- if (reg & USBOTGSS_IRQ1_DISCHRGVBUS_FALL)
+ if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_FALL)
dev_dbg(omap->dev, "DISCHRGVBUS Fall\n");
- if (reg & USBOTGSS_IRQ1_IDPULLUP_FALL)
+ if (reg & USBOTGSS_IRQMISC_IDPULLUP_FALL)
dev_dbg(omap->dev, "IDPULLUP Fall\n");
- dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_1, reg);
+ dwc3_omap_write_irqmisc_status(omap, reg);
+
+ reg = dwc3_omap_read_irq0_status(omap);
- reg = dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0);
- dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0, reg);
+ dwc3_omap_write_irq0_status(omap, reg);
spin_unlock(&omap->lock);
@@ -258,26 +342,26 @@ static void dwc3_omap_enable_irqs(struct dwc3_omap *omap)
/* enable all IRQs */
reg = USBOTGSS_IRQO_COREIRQ_ST;
- dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, reg);
-
- reg = (USBOTGSS_IRQ1_OEVT |
- USBOTGSS_IRQ1_DRVVBUS_RISE |
- USBOTGSS_IRQ1_CHRGVBUS_RISE |
- USBOTGSS_IRQ1_DISCHRGVBUS_RISE |
- USBOTGSS_IRQ1_IDPULLUP_RISE |
- USBOTGSS_IRQ1_DRVVBUS_FALL |
- USBOTGSS_IRQ1_CHRGVBUS_FALL |
- USBOTGSS_IRQ1_DISCHRGVBUS_FALL |
- USBOTGSS_IRQ1_IDPULLUP_FALL);
-
- dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, reg);
+ dwc3_omap_write_irq0_set(omap, reg);
+
+ reg = (USBOTGSS_IRQMISC_OEVT |
+ USBOTGSS_IRQMISC_DRVVBUS_RISE |
+ USBOTGSS_IRQMISC_CHRGVBUS_RISE |
+ USBOTGSS_IRQMISC_DISCHRGVBUS_RISE |
+ USBOTGSS_IRQMISC_IDPULLUP_RISE |
+ USBOTGSS_IRQMISC_DRVVBUS_FALL |
+ USBOTGSS_IRQMISC_CHRGVBUS_FALL |
+ USBOTGSS_IRQMISC_DISCHRGVBUS_FALL |
+ USBOTGSS_IRQMISC_IDPULLUP_FALL);
+
+ dwc3_omap_write_irqmisc_set(omap, reg);
}
static void dwc3_omap_disable_irqs(struct dwc3_omap *omap)
{
/* disable all IRQs */
- dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_1, 0x00);
- dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0, 0x00);
+ dwc3_omap_write_irqmisc_set(omap, 0x00);
+ dwc3_omap_write_irq0_set(omap, 0x00);
}
static u64 dwc3_omap_dma_mask = DMA_BIT_MASK(32);
@@ -294,6 +378,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
int irq;
int utmi_mode = 0;
+ int x_major;
u32 reg;
@@ -347,10 +432,46 @@ static int dwc3_omap_probe(struct platform_device *pdev)
ret = pm_runtime_get_sync(dev);
if (ret < 0) {
dev_err(dev, "get_sync failed with err %d\n", ret);
- return ret;
+ goto err0;
}
- reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS);
+ 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
+ */
+
+ 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_read_utmi_status(omap);
of_property_read_u32(node, "utmi-mode", &utmi_mode);
@@ -365,7 +486,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
dev_dbg(dev, "UNKNOWN utmi mode %d\n", utmi_mode);
}
- dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS, reg);
+ dwc3_omap_write_utmi_status(omap, reg);
/* check the DMA Status */
reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
@@ -376,7 +497,7 @@ static int dwc3_omap_probe(struct platform_device *pdev)
if (ret) {
dev_err(dev, "failed to request IRQ #%d --> %d\n",
omap->irq, ret);
- return ret;
+ goto err1;
}
dwc3_omap_enable_irqs(omap);
@@ -384,10 +505,21 @@ static int dwc3_omap_probe(struct platform_device *pdev)
ret = of_platform_populate(node, NULL, NULL, dev);
if (ret) {
dev_err(&pdev->dev, "failed to create dwc3 core\n");
- return ret;
+ goto err2;
}
return 0;
+
+err2:
+ dwc3_omap_disable_irqs(omap);
+
+err1:
+ pm_runtime_put_sync(dev);
+
+err0:
+ pm_runtime_disable(dev);
+
+ return ret;
}
static int dwc3_omap_remove(struct platform_device *pdev)
@@ -406,6 +538,9 @@ static const struct of_device_id of_dwc3_match[] = {
{
.compatible = "ti,dwc3"
},
+ {
+ .compatible = "ti,am437x-dwc3"
+ },
{ },
};
MODULE_DEVICE_TABLE(of, of_dwc3_match);
@@ -431,8 +566,7 @@ static int dwc3_omap_suspend(struct device *dev)
{
struct dwc3_omap *omap = dev_get_drvdata(dev);
- omap->utmi_otg_status = dwc3_omap_readl(omap->base,
- USBOTGSS_UTMI_OTG_STATUS);
+ omap->utmi_otg_status = dwc3_omap_read_utmi_status(omap);
return 0;
}
@@ -441,8 +575,7 @@ static int dwc3_omap_resume(struct device *dev)
{
struct dwc3_omap *omap = dev_get_drvdata(dev);
- dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS,
- omap->utmi_otg_status);
+ dwc3_omap_write_utmi_status(omap, omap->utmi_otg_status);
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.