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usb: host: tegra: Tegra30 support

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The Tegra30 EHCI controller is mostly compatible with the Tegra20
controller, except Tegra30 includes the HOSTPC register extension.
The has_hostpc capability bit must be set in the ehci_hcd structure if
the controller has such extensions. The new tegra_ehci_soc_config
structure is added to describe the differences between the SoCs.

Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Tuomas Tynkkynen 2013-08-12 16:06:54 +03:00 committed by Felipe Balbi
parent e497a24d8e
commit 327d8b4245
1 changed files with 29 additions and 5 deletions
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34
drivers/usb/host/ehci-tegra.c
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@ -25,6 +25,7 @@
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h> #include <linux/of_gpio.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/pm_runtime.h> #include <linux/pm_runtime.h>
@ -50,6 +51,10 @@
static struct hc_driver __read_mostly tegra_ehci_hc_driver; static struct hc_driver __read_mostly tegra_ehci_hc_driver;
struct tegra_ehci_soc_config {
bool has_hostpc;
};
static int (*orig_hub_control)(struct usb_hcd *hcd, static int (*orig_hub_control)(struct usb_hcd *hcd,
u16 typeReq, u16 wValue, u16 wIndex, u16 typeReq, u16 wValue, u16 wIndex,
char *buf, u16 wLength); char *buf, u16 wLength);
@ -320,8 +325,24 @@ static void tegra_ehci_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb)
free_dma_aligned_buffer(urb); free_dma_aligned_buffer(urb);
} }
static const struct tegra_ehci_soc_config tegra30_soc_config = {
.has_hostpc = true,
};
static const struct tegra_ehci_soc_config tegra20_soc_config = {
.has_hostpc = false,
};
static struct of_device_id tegra_ehci_of_match[] = {
{ .compatible = "nvidia,tegra30-ehci", .data = &tegra30_soc_config },
{ .compatible = "nvidia,tegra20-ehci", .data = &tegra20_soc_config },
{ },
};
static int tegra_ehci_probe(struct platform_device *pdev) static int tegra_ehci_probe(struct platform_device *pdev)
{ {
const struct of_device_id *match;
const struct tegra_ehci_soc_config *soc_config;
struct resource *res; struct resource *res;
struct usb_hcd *hcd; struct usb_hcd *hcd;
struct ehci_hcd *ehci; struct ehci_hcd *ehci;
@ -330,6 +351,13 @@ static int tegra_ehci_probe(struct platform_device *pdev)
int irq; int irq;
struct usb_phy *u_phy; struct usb_phy *u_phy;
match = of_match_device(tegra_ehci_of_match, &pdev->dev);
if (!match) {
dev_err(&pdev->dev, "Error: No device match found\n");
return -ENODEV;
}
soc_config = match->data;
/* Right now device-tree probed devices don't get dma_mask set. /* Right now device-tree probed devices don't get dma_mask set.
* Since shared usb code relies on it, set it here for now. * Since shared usb code relies on it, set it here for now.
* Once we have dma capability bindings this can go away. * Once we have dma capability bindings this can go away.
@ -391,6 +419,7 @@ static int tegra_ehci_probe(struct platform_device *pdev)
goto cleanup_clk_en; goto cleanup_clk_en;
} }
ehci->caps = hcd->regs + 0x100; ehci->caps = hcd->regs + 0x100;
ehci->has_hostpc = soc_config->has_hostpc;
err = usb_phy_init(hcd->phy); err = usb_phy_init(hcd->phy);
if (err) { if (err) {
@ -468,11 +497,6 @@ static void tegra_ehci_hcd_shutdown(struct platform_device *pdev)
hcd->driver->shutdown(hcd); hcd->driver->shutdown(hcd);
} }
static struct of_device_id tegra_ehci_of_match[] = {
{ .compatible = "nvidia,tegra20-ehci", },
{ },
};
static struct platform_driver tegra_ehci_driver = { static struct platform_driver tegra_ehci_driver = {
.probe = tegra_ehci_probe, .probe = tegra_ehci_probe,
.remove = tegra_ehci_remove, .remove = tegra_ehci_remove,