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path: root/drivers/usb/host/ohci-pxa27x.c
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Diffstat (limited to 'drivers/usb/host/ohci-pxa27x.c')
-rw-r--r--drivers/usb/host/ohci-pxa27x.c259
1 files changed, 205 insertions, 54 deletions
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 7f0f35c78185..e294d430733b 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -23,17 +23,90 @@
#include <linux/signal.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
-
-#include <mach/hardware.h>
-#include <mach/pxa-regs.h>
-#include <mach/pxa2xx-regs.h> /* FIXME: for PSSR */
#include <mach/ohci.h>
+/*
+ * UHC: USB Host Controller (OHCI-like) register definitions
+ */
+#define UHCREV (0x0000) /* UHC HCI Spec Revision */
+#define UHCHCON (0x0004) /* UHC Host Control Register */
+#define UHCCOMS (0x0008) /* UHC Command Status Register */
+#define UHCINTS (0x000C) /* UHC Interrupt Status Register */
+#define UHCINTE (0x0010) /* UHC Interrupt Enable */
+#define UHCINTD (0x0014) /* UHC Interrupt Disable */
+#define UHCHCCA (0x0018) /* UHC Host Controller Comm. Area */
+#define UHCPCED (0x001C) /* UHC Period Current Endpt Descr */
+#define UHCCHED (0x0020) /* UHC Control Head Endpt Descr */
+#define UHCCCED (0x0024) /* UHC Control Current Endpt Descr */
+#define UHCBHED (0x0028) /* UHC Bulk Head Endpt Descr */
+#define UHCBCED (0x002C) /* UHC Bulk Current Endpt Descr */
+#define UHCDHEAD (0x0030) /* UHC Done Head */
+#define UHCFMI (0x0034) /* UHC Frame Interval */
+#define UHCFMR (0x0038) /* UHC Frame Remaining */
+#define UHCFMN (0x003C) /* UHC Frame Number */
+#define UHCPERS (0x0040) /* UHC Periodic Start */
+#define UHCLS (0x0044) /* UHC Low Speed Threshold */
+
+#define UHCRHDA (0x0048) /* UHC Root Hub Descriptor A */
+#define UHCRHDA_NOCP (1 << 12) /* No over current protection */
+#define UHCRHDA_OCPM (1 << 11) /* Over Current Protection Mode */
+#define UHCRHDA_POTPGT(x) \
+ (((x) & 0xff) << 24) /* Power On To Power Good Time */
+
+#define UHCRHDB (0x004C) /* UHC Root Hub Descriptor B */
+#define UHCRHS (0x0050) /* UHC Root Hub Status */
+#define UHCRHPS1 (0x0054) /* UHC Root Hub Port 1 Status */
+#define UHCRHPS2 (0x0058) /* UHC Root Hub Port 2 Status */
+#define UHCRHPS3 (0x005C) /* UHC Root Hub Port 3 Status */
+
+#define UHCSTAT (0x0060) /* UHC Status Register */
+#define UHCSTAT_UPS3 (1 << 16) /* USB Power Sense Port3 */
+#define UHCSTAT_SBMAI (1 << 15) /* System Bus Master Abort Interrupt*/
+#define UHCSTAT_SBTAI (1 << 14) /* System Bus Target Abort Interrupt*/
+#define UHCSTAT_UPRI (1 << 13) /* USB Port Resume Interrupt */
+#define UHCSTAT_UPS2 (1 << 12) /* USB Power Sense Port 2 */
+#define UHCSTAT_UPS1 (1 << 11) /* USB Power Sense Port 1 */
+#define UHCSTAT_HTA (1 << 10) /* HCI Target Abort */
+#define UHCSTAT_HBA (1 << 8) /* HCI Buffer Active */
+#define UHCSTAT_RWUE (1 << 7) /* HCI Remote Wake Up Event */
+
+#define UHCHR (0x0064) /* UHC Reset Register */
+#define UHCHR_SSEP3 (1 << 11) /* Sleep Standby Enable for Port3 */
+#define UHCHR_SSEP2 (1 << 10) /* Sleep Standby Enable for Port2 */
+#define UHCHR_SSEP1 (1 << 9) /* Sleep Standby Enable for Port1 */
+#define UHCHR_PCPL (1 << 7) /* Power control polarity low */
+#define UHCHR_PSPL (1 << 6) /* Power sense polarity low */
+#define UHCHR_SSE (1 << 5) /* Sleep Standby Enable */
+#define UHCHR_UIT (1 << 4) /* USB Interrupt Test */
+#define UHCHR_SSDC (1 << 3) /* Simulation Scale Down Clock */
+#define UHCHR_CGR (1 << 2) /* Clock Generation Reset */
+#define UHCHR_FHR (1 << 1) /* Force Host Controller Reset */
+#define UHCHR_FSBIR (1 << 0) /* Force System Bus Iface Reset */
+
+#define UHCHIE (0x0068) /* UHC Interrupt Enable Register*/
+#define UHCHIE_UPS3IE (1 << 14) /* Power Sense Port3 IntEn */
+#define UHCHIE_UPRIE (1 << 13) /* Port Resume IntEn */
+#define UHCHIE_UPS2IE (1 << 12) /* Power Sense Port2 IntEn */
+#define UHCHIE_UPS1IE (1 << 11) /* Power Sense Port1 IntEn */
+#define UHCHIE_TAIE (1 << 10) /* HCI Interface Transfer Abort
+ Interrupt Enable*/
+#define UHCHIE_HBAIE (1 << 8) /* HCI Buffer Active IntEn */
+#define UHCHIE_RWIE (1 << 7) /* Remote Wake-up IntEn */
+
+#define UHCHIT (0x006C) /* UHC Interrupt Test register */
+
#define PXA_UHC_MAX_PORTNUM 3
-#define UHCRHPS(x) __REG2( 0x4C000050, (x)<<2 )
+struct pxa27x_ohci {
+ /* must be 1st member here for hcd_to_ohci() to work */
+ struct ohci_hcd ohci;
+
+ struct device *dev;
+ struct clk *clk;
+ void __iomem *mmio_base;
+};
-static struct clk *usb_clk;
+#define to_pxa27x_ohci(hcd) (struct pxa27x_ohci *)hcd_to_ohci(hcd)
/*
PMM_NPS_MODE -- PMM Non-power switching mode
@@ -45,30 +118,35 @@ static struct clk *usb_clk;
PMM_PERPORT_MODE -- PMM per port switching mode
Ports are powered individually.
*/
-static int pxa27x_ohci_select_pmm( int mode )
+static int pxa27x_ohci_select_pmm(struct pxa27x_ohci *ohci, int mode)
{
- switch ( mode ) {
+ uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
+ uint32_t uhcrhdb = __raw_readl(ohci->mmio_base + UHCRHDB);
+
+ switch (mode) {
case PMM_NPS_MODE:
- UHCRHDA |= RH_A_NPS;
+ uhcrhda |= RH_A_NPS;
break;
case PMM_GLOBAL_MODE:
- UHCRHDA &= ~(RH_A_NPS & RH_A_PSM);
+ uhcrhda &= ~(RH_A_NPS & RH_A_PSM);
break;
case PMM_PERPORT_MODE:
- UHCRHDA &= ~(RH_A_NPS);
- UHCRHDA |= RH_A_PSM;
+ uhcrhda &= ~(RH_A_NPS);
+ uhcrhda |= RH_A_PSM;
/* Set port power control mask bits, only 3 ports. */
- UHCRHDB |= (0x7<<17);
+ uhcrhdb |= (0x7<<17);
break;
default:
printk( KERN_ERR
"Invalid mode %d, set to non-power switch mode.\n",
mode );
- UHCRHDA |= RH_A_NPS;
+ uhcrhda |= RH_A_NPS;
}
+ __raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
+ __raw_writel(uhcrhdb, ohci->mmio_base + UHCRHDB);
return 0;
}
@@ -76,57 +154,110 @@ extern int usb_disabled(void);
/*-------------------------------------------------------------------------*/
-static int pxa27x_start_hc(struct device *dev)
+static inline void pxa27x_setup_hc(struct pxa27x_ohci *ohci,
+ struct pxaohci_platform_data *inf)
+{
+ uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
+ uint32_t uhcrhda = __raw_readl(ohci->mmio_base + UHCRHDA);
+
+ if (inf->flags & ENABLE_PORT1)
+ uhchr &= ~UHCHR_SSEP1;
+
+ if (inf->flags & ENABLE_PORT2)
+ uhchr &= ~UHCHR_SSEP2;
+
+ if (inf->flags & ENABLE_PORT3)
+ uhchr &= ~UHCHR_SSEP3;
+
+ if (inf->flags & POWER_CONTROL_LOW)
+ uhchr |= UHCHR_PCPL;
+
+ if (inf->flags & POWER_SENSE_LOW)
+ uhchr |= UHCHR_PSPL;
+
+ if (inf->flags & NO_OC_PROTECTION)
+ uhcrhda |= UHCRHDA_NOCP;
+
+ if (inf->flags & OC_MODE_PERPORT)
+ uhcrhda |= UHCRHDA_OCPM;
+
+ if (inf->power_on_delay) {
+ uhcrhda &= ~UHCRHDA_POTPGT(0xff);
+ uhcrhda |= UHCRHDA_POTPGT(inf->power_on_delay / 2);
+ }
+
+ __raw_writel(uhchr, ohci->mmio_base + UHCHR);
+ __raw_writel(uhcrhda, ohci->mmio_base + UHCRHDA);
+}
+
+static inline void pxa27x_reset_hc(struct pxa27x_ohci *ohci)
+{
+ uint32_t uhchr = __raw_readl(ohci->mmio_base + UHCHR);
+
+ __raw_writel(uhchr | UHCHR_FHR, ohci->mmio_base + UHCHR);
+ udelay(11);
+ __raw_writel(uhchr & ~UHCHR_FHR, ohci->mmio_base + UHCHR);
+}
+
+#ifdef CONFIG_CPU_PXA27x
+extern void pxa27x_clear_otgph(void);
+#else
+#define pxa27x_clear_otgph() do {} while (0)
+#endif
+
+static int pxa27x_start_hc(struct pxa27x_ohci *ohci, struct device *dev)
{
int retval = 0;
struct pxaohci_platform_data *inf;
+ uint32_t uhchr;
inf = dev->platform_data;
- clk_enable(usb_clk);
+ clk_enable(ohci->clk);
- UHCHR |= UHCHR_FHR;
- udelay(11);
- UHCHR &= ~UHCHR_FHR;
+ pxa27x_reset_hc(ohci);
+
+ uhchr = __raw_readl(ohci->mmio_base + UHCHR) | UHCHR_FSBIR;
+ __raw_writel(uhchr, ohci->mmio_base + UHCHR);
- UHCHR |= UHCHR_FSBIR;
- while (UHCHR & UHCHR_FSBIR)
+ while (__raw_readl(ohci->mmio_base + UHCHR) & UHCHR_FSBIR)
cpu_relax();
+ pxa27x_setup_hc(ohci, inf);
+
if (inf->init)
retval = inf->init(dev);
if (retval < 0)
return retval;
- UHCHR &= ~UHCHR_SSE;
-
- UHCHIE = (UHCHIE_UPRIE | UHCHIE_RWIE);
+ uhchr = __raw_readl(ohci->mmio_base + UHCHR) & ~UHCHR_SSE;
+ __raw_writel(uhchr, ohci->mmio_base + UHCHR);
+ __raw_writel(UHCHIE_UPRIE | UHCHIE_RWIE, ohci->mmio_base + UHCHIE);
/* Clear any OTG Pin Hold */
- if (cpu_is_pxa27x() && (PSSR & PSSR_OTGPH))
- PSSR |= PSSR_OTGPH;
-
+ pxa27x_clear_otgph();
return 0;
}
-static void pxa27x_stop_hc(struct device *dev)
+static void pxa27x_stop_hc(struct pxa27x_ohci *ohci, struct device *dev)
{
struct pxaohci_platform_data *inf;
+ uint32_t uhccoms;
inf = dev->platform_data;
if (inf->exit)
inf->exit(dev);
- UHCHR |= UHCHR_FHR;
- udelay(11);
- UHCHR &= ~UHCHR_FHR;
+ pxa27x_reset_hc(ohci);
- UHCCOMS |= 1;
+ /* Host Controller Reset */
+ uhccoms = __raw_readl(ohci->mmio_base + UHCCOMS) | 0x01;
+ __raw_writel(uhccoms, ohci->mmio_base + UHCCOMS);
udelay(10);
- clk_disable(usb_clk);
+ clk_disable(ohci->clk);
}
@@ -147,18 +278,22 @@ static void pxa27x_stop_hc(struct device *dev)
*/
int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device *pdev)
{
- int retval;
+ int retval, irq;
struct usb_hcd *hcd;
struct pxaohci_platform_data *inf;
+ struct pxa27x_ohci *ohci;
+ struct resource *r;
+ struct clk *usb_clk;
inf = pdev->dev.platform_data;
if (!inf)
return -ENODEV;
- if (pdev->resource[1].flags != IORESOURCE_IRQ) {
- pr_debug ("resource[1] is not IORESOURCE_IRQ");
- return -ENOMEM;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ pr_err("no resource of IORESOURCE_IRQ");
+ return -ENXIO;
}
usb_clk = clk_get(&pdev->dev, "USBCLK");
@@ -168,8 +303,16 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device
hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
if (!hcd)
return -ENOMEM;
- hcd->rsrc_start = pdev->resource[0].start;
- hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r) {
+ pr_err("no resource of IORESOURCE_MEM");
+ retval = -ENXIO;
+ goto err1;
+ }
+
+ hcd->rsrc_start = r->start;
+ hcd->rsrc_len = resource_size(r);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
pr_debug("request_mem_region failed");
@@ -184,24 +327,30 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device
goto err2;
}
- if ((retval = pxa27x_start_hc(&pdev->dev)) < 0) {
+ /* initialize "struct pxa27x_ohci" */
+ ohci = (struct pxa27x_ohci *)hcd_to_ohci(hcd);
+ ohci->dev = &pdev->dev;
+ ohci->clk = usb_clk;
+ ohci->mmio_base = (void __iomem *)hcd->regs;
+
+ if ((retval = pxa27x_start_hc(ohci, &pdev->dev)) < 0) {
pr_debug("pxa27x_start_hc failed");
goto err3;
}
/* Select Power Management Mode */
- pxa27x_ohci_select_pmm(inf->port_mode);
+ pxa27x_ohci_select_pmm(ohci, inf->port_mode);
if (inf->power_budget)
hcd->power_budget = inf->power_budget;
ohci_hcd_init(hcd_to_ohci(hcd));
- retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED);
+ retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
if (retval == 0)
return retval;
- pxa27x_stop_hc(&pdev->dev);
+ pxa27x_stop_hc(ohci, &pdev->dev);
err3:
iounmap(hcd->regs);
err2:
@@ -228,12 +377,14 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device
*/
void usb_hcd_pxa27x_remove (struct usb_hcd *hcd, struct platform_device *pdev)
{
+ struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
+
usb_remove_hcd(hcd);
- pxa27x_stop_hc(&pdev->dev);
+ pxa27x_stop_hc(ohci, &pdev->dev);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
- clk_put(usb_clk);
+ clk_put(ohci->clk);
}
/*-------------------------------------------------------------------------*/
@@ -266,7 +417,7 @@ ohci_pxa27x_start (struct usb_hcd *hcd)
static const struct hc_driver ohci_pxa27x_hc_driver = {
.description = hcd_name,
.product_desc = "PXA27x OHCI",
- .hcd_priv_size = sizeof(struct ohci_hcd),
+ .hcd_priv_size = sizeof(struct pxa27x_ohci),
/*
* generic hardware linkage
@@ -330,13 +481,13 @@ static int ohci_hcd_pxa27x_drv_remove(struct platform_device *pdev)
static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_t state)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
- if (time_before(jiffies, ohci->next_statechange))
+ if (time_before(jiffies, ohci->ohci.next_statechange))
msleep(5);
- ohci->next_statechange = jiffies;
+ ohci->ohci.next_statechange = jiffies;
- pxa27x_stop_hc(&pdev->dev);
+ pxa27x_stop_hc(ohci, &pdev->dev);
hcd->state = HC_STATE_SUSPENDED;
return 0;
@@ -345,14 +496,14 @@ static int ohci_hcd_pxa27x_drv_suspend(struct platform_device *pdev, pm_message_
static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ struct pxa27x_ohci *ohci = to_pxa27x_ohci(hcd);
int status;
- if (time_before(jiffies, ohci->next_statechange))
+ if (time_before(jiffies, ohci->ohci.next_statechange))
msleep(5);
- ohci->next_statechange = jiffies;
+ ohci->ohci.next_statechange = jiffies;
- if ((status = pxa27x_start_hc(&pdev->dev)) < 0)
+ if ((status = pxa27x_start_hc(ohci, &pdev->dev)) < 0)
return status;
ohci_finish_controller_resume(hcd);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 23:28:49 +0000