* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
* (C) Copyright 2000-2005 David Brownell
* (C) Copyright 2002 Hewlett-Packard Company
- *
+ *
* OMAP Bus Glue
*
* Modified for OMAP by Tony Lindgren <tony@atomide.com>
* This file is licenced under the GPL.
*/
+#include <linux/signal.h> /* IRQF_DISABLED */
+#include <linux/jiffies.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/mach-types.h>
-#include <asm/arch/hardware.h>
#include <asm/arch/mux.h>
#include <asm/arch/irqs.h>
#include <asm/arch/gpio.h>
#include <asm/arch/fpga.h>
#include <asm/arch/usb.h>
-#include <asm/hardware/clock.h>
/* OMAP-1510 OHCI has its own MMU for DMA */
extern int ocpi_enable(void);
static struct clk *usb_host_ck;
+static struct clk *usb_dc_ck;
+static int host_enabled;
+static int host_initialized;
static void omap_ohci_clock_power(int on)
{
if (on) {
+ clk_enable(usb_dc_ck);
clk_enable(usb_host_ck);
/* guesstimate for T5 == 1x 32K clock + APLL lock time */
udelay(100);
} else {
clk_disable(usb_host_ck);
+ clk_disable(usb_dc_ck);
}
}
if (on) {
if (machine_is_omap_innovator() && cpu_is_omap1510())
fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
- | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
+ | ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
INNOVATOR_FPGA_CAM_USB_CONTROL);
else if (machine_is_omap_osk())
tps65010_set_gpio_out_value(GPIO1, LOW);
} else {
if (machine_is_omap_innovator() && cpu_is_omap1510())
fpga_write(fpga_read(INNOVATOR_FPGA_CAM_USB_CONTROL)
- & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
+ & ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
INNOVATOR_FPGA_CAM_USB_CONTROL);
else if (machine_is_omap_osk())
tps65010_set_gpio_out_value(GPIO1, HIGH);
return 0;
}
+#ifdef CONFIG_ARCH_OMAP15XX
/*
* OMAP-1510 specific Local Bus clock on/off
*/
/*
* OMAP-1510 specific Local Bus initialization
* NOTE: This assumes 32MB memory size in OMAP1510LB_MEMSIZE.
- * See also arch/mach-omap/memory.h for __virt_to_dma() and
- * __dma_to_virt() which need to match with the physical
+ * See also arch/mach-omap/memory.h for __virt_to_dma() and
+ * __dma_to_virt() which need to match with the physical
* Local Bus address below.
*/
static int omap_1510_local_bus_init(void)
unsigned int tlb;
unsigned long lbaddr, physaddr;
- omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
+ omap_writel((omap_readl(OMAP1510_LB_CLOCK_DIV) & 0xfffffff8) | 0x4,
OMAP1510_LB_CLOCK_DIV);
/* Configure the Local Bus MMU table */
lbaddr = tlb * 0x00100000 + OMAP1510_LB_OFFSET;
physaddr = tlb * 0x00100000 + PHYS_OFFSET;
omap_writel((lbaddr & 0x0fffffff) >> 22, OMAP1510_LB_MMU_CAM_H);
- omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
+ omap_writel(((lbaddr & 0x003ffc00) >> 6) | 0xc,
OMAP1510_LB_MMU_CAM_L);
omap_writel(physaddr >> 16, OMAP1510_LB_MMU_RAM_H);
omap_writel((physaddr & 0x0000fc00) | 0x300, OMAP1510_LB_MMU_RAM_L);
return 0;
}
+#else
+#define omap_1510_local_bus_power(x) {}
+#define omap_1510_local_bus_init() {}
+#endif
#ifdef CONFIG_USB_OTG
/*-------------------------------------------------------------------------*/
-static int omap_start_hc(struct ohci_hcd *ohci, struct platform_device *pdev)
+static int ohci_omap_init(struct usb_hcd *hcd)
{
- struct omap_usb_config *config = pdev->dev.platform_data;
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ struct omap_usb_config *config = hcd->self.controller->platform_data;
int need_transceiver = (config->otg != 0);
int ret;
- dev_dbg(&pdev->dev, "starting USB Controller\n");
+ dev_dbg(hcd->self.controller, "starting USB Controller\n");
if (config->otg) {
ohci_to_hcd(ohci)->self.otg_port = config->otg;
/* default/minimum OTG power budget: 8 mA */
- ohci->power_budget = 8;
+ ohci_to_hcd(ohci)->power_budget = 8;
}
/* boards can use OTG transceivers in non-OTG modes */
if (ohci->transceiver) {
int status = otg_set_host(ohci->transceiver,
&ohci_to_hcd(ohci)->self);
- dev_dbg(&pdev->dev, "init %s transceiver, status %d\n",
+ dev_dbg(hcd->self.controller, "init %s transceiver, status %d\n",
ohci->transceiver->label, status);
if (status) {
if (ohci->transceiver)
return status;
}
} else {
- dev_err(&pdev->dev, "can't find transceiver\n");
+ dev_err(hcd->self.controller, "can't find transceiver\n");
return -ENODEV;
}
}
/* TPS2045 switch for internal transceiver (port 1) */
if (machine_is_omap_osk()) {
- ohci->power_budget = 250;
+ ohci_to_hcd(ohci)->power_budget = 250;
rh &= ~RH_A_NOCP;
}
ohci_writel(ohci, rh, &ohci->regs->roothub.a);
distrust_firmware = 0;
+ } else if (machine_is_nokia770()) {
+ /* We require a self-powered hub, which should have
+ * plenty of power. */
+ ohci_to_hcd(ohci)->power_budget = 0;
}
/* FIXME khubd hub requests should manage power switching */
return 0;
}
-static void omap_stop_hc(struct platform_device *pdev)
+static void ohci_omap_stop(struct usb_hcd *hcd)
{
- dev_dbg(&pdev->dev, "stopping USB Controller\n");
+ dev_dbg(hcd->self.controller, "stopping USB Controller\n");
omap_ohci_clock_power(0);
}
/*-------------------------------------------------------------------------*/
-void usb_hcd_omap_remove (struct usb_hcd *, struct platform_device *);
-
-/* configure so an HC device and id are always provided */
-/* always called with process context; sleeping is OK */
-
-
/**
* usb_hcd_omap_probe - initialize OMAP-based HCDs
* Context: !in_interrupt()
* then invokes the start() method for the HCD associated with it
* through the hotplug entry's driver_data.
*/
-int usb_hcd_omap_probe (const struct hc_driver *driver,
+static int usb_hcd_omap_probe (const struct hc_driver *driver,
struct platform_device *pdev)
{
- int retval;
+ int retval, irq;
struct usb_hcd *hcd = 0;
struct ohci_hcd *ohci;
if (pdev->num_resources != 2) {
- printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
+ printk(KERN_ERR "hcd probe: invalid num_resources: %i\n",
pdev->num_resources);
return -ENODEV;
}
- if (pdev->resource[0].flags != IORESOURCE_MEM
+ if (pdev->resource[0].flags != IORESOURCE_MEM
|| pdev->resource[1].flags != IORESOURCE_IRQ) {
printk(KERN_ERR "hcd probe: invalid resource type\n");
return -ENODEV;
if (IS_ERR(usb_host_ck))
return PTR_ERR(usb_host_ck);
+ if (!cpu_is_omap1510())
+ usb_dc_ck = clk_get(0, "usb_dc_ck");
+ else
+ usb_dc_ck = clk_get(0, "lb_ck");
+
+ if (IS_ERR(usb_dc_ck)) {
+ clk_put(usb_host_ck);
+ return PTR_ERR(usb_dc_ck);
+ }
+
+
hcd = usb_create_hcd (driver, &pdev->dev, pdev->dev.bus_id);
if (!hcd) {
retval = -ENOMEM;
ohci = hcd_to_ohci(hcd);
ohci_hcd_init(ohci);
- retval = omap_start_hc(ohci, pdev);
- if (retval < 0)
+ host_initialized = 0;
+ host_enabled = 1;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ retval = -ENXIO;
goto err2;
+ }
+ retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ if (retval)
+ goto err2;
+
+ host_initialized = 1;
- retval = usb_add_hcd(hcd, platform_get_irq(pdev, 0), SA_INTERRUPT);
- if (retval == 0)
- return retval;
+ if (!host_enabled)
+ omap_ohci_clock_power(0);
- omap_stop_hc(pdev);
+ return 0;
err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
usb_put_hcd(hcd);
err0:
+ clk_put(usb_dc_ck);
clk_put(usb_host_ck);
return retval;
}
* Reverses the effect of usb_hcd_omap_probe(), first invoking
* the HCD's stop() method. It is always called from a thread
* context, normally "rmmod", "apmd", or something similar.
- *
*/
-void usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
+static inline void
+usb_hcd_omap_remove (struct usb_hcd *hcd, struct platform_device *pdev)
{
+ struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+
usb_remove_hcd(hcd);
+ if (ohci->transceiver) {
+ (void) otg_set_host(ohci->transceiver, 0);
+ put_device(ohci->transceiver->dev);
+ }
if (machine_is_omap_osk())
omap_free_gpio(9);
- omap_stop_hc(pdev);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
+ clk_put(usb_dc_ck);
clk_put(usb_host_ck);
}
/*-------------------------------------------------------------------------*/
-static int __devinit
+static int
ohci_omap_start (struct usb_hcd *hcd)
{
struct omap_usb_config *config;
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
int ret;
+ if (!host_enabled)
+ return 0;
config = hcd->self.controller->platform_data;
- if (config->otg || config->rwc)
+ if (config->otg || config->rwc) {
+ ohci->hc_control = OHCI_CTRL_RWC;
writel(OHCI_CTRL_RWC, &ohci->regs->control);
+ }
if ((ret = ohci_run (ohci)) < 0) {
dev_err(hcd->self.controller, "can't start\n");
/*
* basic lifecycle operations
*/
+ .reset = ohci_omap_init,
.start = ohci_omap_start,
- .stop = ohci_stop,
+ .stop = ohci_omap_stop,
+ .shutdown = ohci_shutdown,
/*
* managing i/o requests and associated device resources
*/
.hub_status_data = ohci_hub_status_data,
.hub_control = ohci_hub_control,
-#ifdef CONFIG_USB_SUSPEND
- .hub_suspend = ohci_hub_suspend,
- .hub_resume = ohci_hub_resume,
+ .hub_irq_enable = ohci_rhsc_enable,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
#endif
.start_port_reset = ohci_start_port_reset,
};
/*-------------------------------------------------------------------------*/
-static int ohci_hcd_omap_drv_probe(struct device *dev)
+static int ohci_hcd_omap_drv_probe(struct platform_device *dev)
{
- return usb_hcd_omap_probe(&ohci_omap_hc_driver,
- to_platform_device(dev));
+ return usb_hcd_omap_probe(&ohci_omap_hc_driver, dev);
}
-static int ohci_hcd_omap_drv_remove(struct device *dev)
+static int ohci_hcd_omap_drv_remove(struct platform_device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct usb_hcd *hcd = dev_get_drvdata(dev);
- struct ohci_hcd *ohci = hcd_to_ohci (hcd);
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
- usb_hcd_omap_remove(hcd, pdev);
- if (ohci->transceiver) {
- (void) otg_set_host(ohci->transceiver, 0);
- put_device(ohci->transceiver->dev);
- }
- dev_set_drvdata(dev, NULL);
+ usb_hcd_omap_remove(hcd, dev);
+ platform_set_drvdata(dev, NULL);
return 0;
}
#ifdef CONFIG_PM
-/* states match PCI usage, always suspending the root hub except that
- * 4 ~= D3cold (ACPI D3) with clock off (resume sees reset).
- *
- * FIXME: above comment is not right, and code is wrong, too :-(.
- */
-
-static int ohci_omap_suspend(struct device *dev, pm_message_t state, u32 level)
+static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
{
- struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
- int status = -EINVAL;
+ struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
- if (level != SUSPEND_POWER_DOWN)
- return 0;
- if (state <= dev->power.power_state)
- return 0;
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
- dev_dbg(dev, "suspend to %d\n", state);
- down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
- status = ohci_hub_suspend(ohci_to_hcd(ohci));
- if (status == 0) {
- if (state >= 4) {
- omap_ohci_clock_power(0);
- ohci_to_hcd(ohci)->self.root_hub->state =
- USB_STATE_SUSPENDED;
- state = 4;
- }
- ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
- dev->power.power_state = state;
- }
- up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
- return status;
+ omap_ohci_clock_power(0);
+ ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
+ dev->dev.power.power_state = PMSG_SUSPEND;
+ return 0;
}
-static int ohci_omap_resume(struct device *dev, u32 level)
+static int ohci_omap_resume(struct platform_device *dev)
{
- struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
- int status = 0;
+ struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
- if (level != RESUME_POWER_ON)
- return 0;
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
- switch (dev->power.power_state) {
- case 0:
- break;
- case 4:
- if (time_before(jiffies, ohci->next_statechange))
- msleep(5);
- ohci->next_statechange = jiffies;
- omap_ohci_clock_power(1);
- /* FALLTHROUGH */
- default:
- dev_dbg(dev, "resume from %d\n", dev->power.power_state);
-#ifdef CONFIG_USB_SUSPEND
- /* get extra cleanup even if remote wakeup isn't in use */
- status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub);
-#else
- down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
- status = ohci_hub_resume(ohci_to_hcd(ohci));
- up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
-#endif
- if (status == 0)
- dev->power.power_state = 0;
- break;
- }
- return status;
+ omap_ohci_clock_power(1);
+ dev->dev.power.power_state = PMSG_ON;
+ usb_hcd_resume_root_hub(platform_get_drvdata(dev));
+ return 0;
}
#endif
/*
* Driver definition to register with the OMAP bus
*/
-static struct device_driver ohci_hcd_omap_driver = {
- .name = "ohci",
- .bus = &platform_bus_type,
+static struct platform_driver ohci_hcd_omap_driver = {
.probe = ohci_hcd_omap_drv_probe,
.remove = ohci_hcd_omap_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
#ifdef CONFIG_PM
.suspend = ohci_omap_suspend,
.resume = ohci_omap_resume,
#endif
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ohci",
+ },
};
static int __init ohci_hcd_omap_init (void)
pr_debug("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
sizeof (struct ed), sizeof (struct td));
- return driver_register(&ohci_hcd_omap_driver);
+ return platform_driver_register(&ohci_hcd_omap_driver);
}
static void __exit ohci_hcd_omap_cleanup (void)
{
- driver_unregister(&ohci_hcd_omap_driver);
+ platform_driver_unregister(&ohci_hcd_omap_driver);
}
module_init (ohci_hcd_omap_init);
git://git.onelab.eu / linux-2.6.git / blobdiff