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-rw-r--r--recipes/kexecboot/linux-kexecboot-2.6.24/tosa/0045-Update-tmio_ohci.patch416
1 files changed, 416 insertions, 0 deletions
diff --git a/recipes/kexecboot/linux-kexecboot-2.6.24/tosa/0045-Update-tmio_ohci.patch b/recipes/kexecboot/linux-kexecboot-2.6.24/tosa/0045-Update-tmio_ohci.patch
new file mode 100644
index 0000000000..10f483b89d
--- /dev/null
+++ b/recipes/kexecboot/linux-kexecboot-2.6.24/tosa/0045-Update-tmio_ohci.patch
@@ -0,0 +1,416 @@
+From fe3c05491370965eb821aedc95f771b86ebab3ab Mon Sep 17 00:00:00 2001
+From: Dmitry Baryshkov <dbaryshkov@gmail.com>
+Date: Wed, 9 Jan 2008 02:01:44 +0300
+Subject: [PATCH 45/64] Update tmio_ohci:
+ Ports management.
+ Basic support for ohci suspend/resume.
+
+Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
+---
+ drivers/mfd/tc6393xb.c | 40 ++++++++
+ drivers/usb/host/ohci-tmio.c | 206 +++++++++++++++++++++++++++++++++++++++---
+ 2 files changed, 235 insertions(+), 11 deletions(-)
+
+diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
+index 9439f39..5d17687 100644
+--- a/drivers/mfd/tc6393xb.c
++++ b/drivers/mfd/tc6393xb.c
+@@ -224,6 +224,44 @@ static int tc6393xb_ohci_enable(struct platform_device *ohci)
+ return 0;
+ }
+
++static int tc6393xb_ohci_suspend(struct platform_device *ohci)
++{
++ struct platform_device *dev = to_platform_device(ohci->dev.parent);
++ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
++ struct tc6393xb_scr __iomem *scr = tc6393xb->scr;
++ union tc6393xb_scr_ccr ccr;
++ unsigned long flags;
++
++ spin_lock_irqsave(&tc6393xb->lock, flags);
++
++ ccr.raw = ioread16(&scr->ccr);
++ ccr.bits.usbcken = 0;
++ iowrite16(ccr.raw, &scr->ccr);
++
++ spin_unlock_irqrestore(&tc6393xb->lock, flags);
++
++ return 0;
++}
++
++static int tc6393xb_ohci_resume(struct platform_device *ohci)
++{
++ struct platform_device *dev = to_platform_device(ohci->dev.parent);
++ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
++ struct tc6393xb_scr __iomem *scr = tc6393xb->scr;
++ union tc6393xb_scr_ccr ccr;
++ unsigned long flags;
++
++ spin_lock_irqsave(&tc6393xb->lock, flags);
++
++ ccr.raw = ioread16(&scr->ccr);
++ ccr.bits.usbcken = 1;
++ iowrite16(ccr.raw, &scr->ccr);
++
++ spin_unlock_irqrestore(&tc6393xb->lock, flags);
++
++ return 0;
++}
++
+ static int tc6393xb_fb_disable(struct platform_device *fb)
+ {
+ struct platform_device *dev = to_platform_device(fb->dev.parent);
+@@ -423,6 +461,8 @@ static struct mfd_cell tc6393xb_cells[] = {
+ .name = "tmio-ohci",
+ .enable = tc6393xb_ohci_enable,
+ .disable = tc6393xb_ohci_disable,
++ .suspend = tc6393xb_ohci_suspend,
++ .resume = tc6393xb_ohci_resume,
+ .num_resources = ARRAY_SIZE(tc6393xb_ohci_resources),
+ .resources = tc6393xb_ohci_resources,
+ },
+diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c
+index be609f3..65e3cd3 100644
+--- a/drivers/usb/host/ohci-tmio.c
++++ b/drivers/usb/host/ohci-tmio.c
+@@ -75,10 +75,13 @@ struct tmio_uhccr {
+ u8 x07[3];
+ } __attribute__((packed));
+
++#define MAX_TMIO_OHCI_PORTS 3
++
+ #define UHCCR_PM_GKEN 0x0001
+ #define UHCCR_PM_CKRNEN 0x0002
+ #define UHCCR_PM_USBPW1 0x0004
+ #define UHCCR_PM_USBPW2 0x0008
++#define UHCCR_PM_USBPW3 0x0008
+ #define UHCCR_PM_PMEE 0x0100
+ #define UHCCR_PM_PMES 0x8000
+
+@@ -86,44 +89,96 @@ struct tmio_uhccr {
+
+ struct tmio_hcd {
+ struct tmio_uhccr __iomem *ccr;
++ spinlock_t lock; /* protects RMW cycles and disabled_ports data */
++ bool disabled_ports[MAX_TMIO_OHCI_PORTS];
+ };
+
+ #define hcd_to_tmio(hcd) ((struct tmio_hcd *)(hcd_to_ohci(hcd) + 1))
+ #define ohci_to_tmio(ohci) ((struct tmio_hcd *)(ohci + 1))
+
++struct indexed_device_attribute{
++ struct device_attribute dev_attr;
++ int index;
++};
++#define to_indexed_dev_attr(_dev_attr) \
++ container_of(_dev_attr, struct indexed_device_attribute, dev_attr)
++
++#define INDEXED_ATTR(_name, _mode, _show, _store, _index) \
++ { .dev_attr = __ATTR(_name ## _index, _mode, _show, _store), \
++ .index = _index }
++
++#define INDEXED_DEVICE_ATTR(_name, _mode, _show, _store, _index) \
++struct indexed_device_attribute dev_attr_##_name ## _index \
++ = INDEXED_ATTR(_name, _mode, _show, _store, _index)
++
++static bool disabled_tmio_ports[MAX_TMIO_OHCI_PORTS];
++module_param_array(disabled_tmio_ports, bool, NULL, 0644);
++MODULE_PARM_DESC(disabled_tmio_ports,
++ "disable specified TC6393 usb ports (default: all enabled)");
++
+ /*-------------------------------------------------------------------------*/
+
++static void tmio_write_pm(struct platform_device *dev)
++{
++ struct usb_hcd *hcd = platform_get_drvdata(dev);
++ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
++ struct tmio_uhccr __iomem *ccr = tmio->ccr;
++ u16 pm;
++ unsigned long flags;
++
++ spin_lock_irqsave(&tmio->lock, flags);
++
++ pm = UHCCR_PM_GKEN | UHCCR_PM_CKRNEN |
++ UHCCR_PM_PMEE | UHCCR_PM_PMES;
++
++ if (tmio->disabled_ports[0])
++ pm |= UHCCR_PM_USBPW1;
++ if (tmio->disabled_ports[1])
++ pm |= UHCCR_PM_USBPW2;
++ if (tmio->disabled_ports[2])
++ pm |= UHCCR_PM_USBPW3;
++
++ iowrite16(pm, &ccr->pm);
++ spin_unlock_irqrestore(&tmio->lock, flags);
++}
++
+ static void tmio_stop_hc(struct platform_device *dev)
+ {
+ struct mfd_cell *cell = mfd_get_cell(dev);
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
++ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
+ struct tmio_uhccr __iomem *ccr = tmio->ccr;
+ u16 pm;
+
+- pm = UHCCR_PM_GKEN | UHCCR_PM_CKRNEN | UHCCR_PM_USBPW1 | UHCCR_PM_USBPW2;
++ pm = UHCCR_PM_GKEN | UHCCR_PM_CKRNEN;
++ switch (ohci->num_ports) {
++ default:
++ dev_err(&dev->dev, "Unsupported amount of ports: %d\n", ohci->num_ports);
++ case 3:
++ pm |= UHCCR_PM_USBPW3;
++ case 2:
++ pm |= UHCCR_PM_USBPW2;
++ case 1:
++ pm |= UHCCR_PM_USBPW1;
++ }
+ iowrite8(0, &ccr->intc);
+ iowrite8(0, &ccr->ilme);
+ iowrite16(0, &ccr->basel);
+ iowrite16(0, &ccr->baseh);
+- iowrite16(pm, &ccr->pm);
++ iowrite16(pm, &ccr->pm);
+
+ cell->disable(dev);
+ }
+
+ static void tmio_start_hc(struct platform_device *dev)
+ {
+- struct mfd_cell *cell = mfd_get_cell(dev);
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
+ struct tmio_uhccr __iomem *ccr = tmio->ccr;
+- u16 pm;
+ unsigned long base = hcd->rsrc_start;
+
+- pm = UHCCR_PM_CKRNEN | UHCCR_PM_GKEN | UHCCR_PM_PMEE | UHCCR_PM_PMES;
+- cell->enable(dev);
+-
+- iowrite16(pm, &ccr->pm);
++ tmio_write_pm(dev);
+ iowrite16(base, &ccr->basel);
+ iowrite16(base >> 16, &ccr->baseh);
+ iowrite8(1, &ccr->ilme);
+@@ -133,9 +188,56 @@ static void tmio_start_hc(struct platform_device *dev)
+ ioread8(&ccr->revid), hcd->rsrc_start, hcd->irq);
+ }
+
++static ssize_t tmio_disabled_port_show(struct device *dev,
++ struct device_attribute *attr,
++ char *buf)
++{
++ struct usb_hcd *hcd = dev_get_drvdata(dev);
++ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
++ int index = to_indexed_dev_attr(attr)->index;
++ return snprintf(buf, PAGE_SIZE, "%c",
++ tmio->disabled_ports[index-1]? 'Y': 'N');
++}
++
++static ssize_t tmio_disabled_port_store(struct device *dev,
++ struct device_attribute *attr,
++ const char *buf, size_t count)
++{
++ struct usb_hcd *hcd = dev_get_drvdata(dev);
++ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
++ int index = to_indexed_dev_attr(attr)->index;
++
++ if (!count)
++ return -EINVAL;
++
++ switch (buf[0]) {
++ case 'y': case 'Y': case '1':
++ tmio->disabled_ports[index-1] = true;
++ break;
++ case 'n': case 'N': case '0':
++ tmio->disabled_ports[index-1] = false;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ tmio_write_pm(to_platform_device(dev));
++
++ return 1;
++}
++
++
++static INDEXED_DEVICE_ATTR(disabled_usb_port, S_IRUGO | S_IWUSR,
++ tmio_disabled_port_show, tmio_disabled_port_store, 1);
++static INDEXED_DEVICE_ATTR(disabled_usb_port, S_IRUGO | S_IWUSR,
++ tmio_disabled_port_show, tmio_disabled_port_store, 2);
++static INDEXED_DEVICE_ATTR(disabled_usb_port, S_IRUGO | S_IWUSR,
++ tmio_disabled_port_show, tmio_disabled_port_store, 3);
++
+ static int usb_hcd_tmio_probe(const struct hc_driver *driver,
+ struct platform_device *dev)
+ {
++ struct mfd_cell *cell = mfd_get_cell(dev);
+ struct resource *config = platform_get_resource_byname(dev, IORESOURCE_MEM, TMIO_OHCI_CONFIG);
+ struct resource *regs = platform_get_resource_byname(dev, IORESOURCE_MEM, TMIO_OHCI_CONTROL);
+ struct resource *sram = platform_get_resource_byname(dev, IORESOURCE_MEM, TMIO_OHCI_SRAM);
+@@ -159,6 +261,12 @@ static int usb_hcd_tmio_probe(const struct hc_driver *driver,
+
+ tmio = hcd_to_tmio(hcd);
+
++ spin_lock_init(&tmio->lock);
++
++ memcpy(tmio->disabled_ports,
++ disabled_tmio_ports,
++ sizeof(disabled_tmio_ports));
++
+ tmio->ccr = ioremap(config->start, config->end - config->start + 1);
+ if (!tmio->ccr) {
+ retval = -ENOMEM;
+@@ -183,17 +291,46 @@ static int usb_hcd_tmio_probe(const struct hc_driver *driver,
+ if (retval)
+ goto err_dmabounce_register_dev;
+
++ retval = cell->enable(dev);
++ if (retval)
++ goto err_enable;
++
+ tmio_start_hc(dev);
+ ohci = hcd_to_ohci(hcd);
+ ohci_hcd_init(ohci);
+
+ retval = usb_add_hcd(hcd, irq, IRQF_DISABLED);
++ if (retval)
++ goto err_add_hcd;
++
++ switch (ohci->num_ports) {
++ default:
++ dev_err(&dev->dev, "Unsupported amount of ports: %d\n",
++ ohci->num_ports);
++ case 3:
++ retval |= device_create_file(&dev->dev,
++ &dev_attr_disabled_usb_port3.dev_attr);
++ case 2:
++ retval |= device_create_file(&dev->dev,
++ &dev_attr_disabled_usb_port2.dev_attr);
++ case 1:
++ retval |= device_create_file(&dev->dev,
++ &dev_attr_disabled_usb_port1.dev_attr);
++ }
+
+ if (retval == 0)
+ return retval;
+
+- tmio_stop_hc(dev);
++ device_remove_file(&dev->dev, &dev_attr_disabled_usb_port3.dev_attr);
++ device_remove_file(&dev->dev, &dev_attr_disabled_usb_port2.dev_attr);
++ device_remove_file(&dev->dev, &dev_attr_disabled_usb_port1.dev_attr);
++
++ usb_remove_hcd(hcd);
+
++err_add_hcd:
++ tmio_stop_hc(dev);
++ cell->disable(dev);
++err_enable:
+ dmabounce_unregister_dev(&dev->dev);
+ err_dmabounce_register_dev:
+ dma_release_declared_memory(&dev->dev);
+@@ -212,6 +349,9 @@ static void usb_hcd_tmio_remove(struct usb_hcd *hcd, struct platform_device *dev
+ {
+ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
+
++ device_remove_file(&dev->dev, &dev_attr_disabled_usb_port3.dev_attr);
++ device_remove_file(&dev->dev, &dev_attr_disabled_usb_port2.dev_attr);
++ device_remove_file(&dev->dev, &dev_attr_disabled_usb_port1.dev_attr);
+ usb_remove_hcd(hcd);
+ tmio_stop_hc(dev);
+ dmabounce_unregister_dev(&dev->dev);
+@@ -297,13 +437,22 @@ static u64 dma_mask = DMA_32BIT_MASK;
+ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev)
+ {
+ struct resource *sram = platform_get_resource_byname(dev, IORESOURCE_MEM, TMIO_OHCI_SRAM);
++ int retval;
+
+ dev->dev.dma_mask = &dma_mask;
+ dev->dev.coherent_dma_mask = DMA_32BIT_MASK;
+
++ /* FIXME: move dmabounce checkers to tc6393xb core? */
+ dmabounce_register_checker(tmio_dmabounce_check, sram);
+
+- return usb_hcd_tmio_probe(&ohci_tmio_hc_driver, dev);
++ retval = usb_hcd_tmio_probe(&ohci_tmio_hc_driver, dev);
++
++ if (retval == 0)
++ return retval;
++
++ dmabounce_remove_checker(tmio_dmabounce_check, sram);
++
++ return retval;
+ }
+
+ static int ohci_hcd_tmio_drv_remove(struct platform_device *dev)
+@@ -323,14 +472,31 @@ static int ohci_hcd_tmio_drv_remove(struct platform_device *dev)
+ #ifdef CONFIG_PM
+ static int ohci_hcd_tmio_drv_suspend(struct platform_device *dev, pm_message_t state)
+ {
++ struct mfd_cell *cell = mfd_get_cell(dev);
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
++ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
++ struct tmio_uhccr __iomem *ccr = tmio->ccr;
++ unsigned long flags;
++ u8 misc;
++ int ret;
+
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+
+- tmio_stop_hc(dev);
++ spin_lock_irqsave(&tmio->lock, flags);
++
++ misc = ioread8(&ccr->misc);
++ misc |= 1 << 3; /* USSUSP */
++ iowrite8(misc, &ccr->misc);
++
++ spin_unlock_irqrestore(&tmio->lock, flags);
++
++ ret = cell->suspend(dev);
++ if (ret)
++ return ret;
++
+ hcd->state = HC_STATE_SUSPENDED;
+ dev->dev.power.power_state = PMSG_SUSPEND;
+
+@@ -339,15 +505,33 @@ static int ohci_hcd_tmio_drv_suspend(struct platform_device *dev, pm_message_t s
+
+ static int ohci_hcd_tmio_drv_resume(struct platform_device *dev)
+ {
++ struct mfd_cell *cell = mfd_get_cell(dev);
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
++ struct tmio_hcd *tmio = hcd_to_tmio(hcd);
++ struct tmio_uhccr __iomem *ccr = tmio->ccr;
++ unsigned long flags;
++ u8 misc;
++ int ret;
+
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+
++ ret = cell->resume(dev);
++ if (ret)
++ return ret;
++
+ tmio_start_hc(dev);
+
++ spin_lock_irqsave(&tmio->lock, flags);
++
++ misc = ioread8(&ccr->misc);
++ misc &= ~(1 << 3); /* USSUSP */
++ iowrite8(misc, &ccr->misc);
++
++ spin_unlock_irqrestore(&tmio->lock, flags);
++
+ dev->dev.power.power_state = PMSG_ON;
+ usb_hcd_resume_root_hub(hcd);
+
+--
+1.5.3.8
+
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-20 00:39:40 +0000