diff options
| author | Marc Jones <marcj303@gmail.com> | 2017-11-22 22:16:31 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2017-12-06 16:23:44 +0000 |
| commit | fb4c7d250fb8940377551d224f2473aae0565290 (patch) | |
| tree | 650be5b2bf3c8e0b426169954a6400c16491d866 /src/soc/amd | |
| parent | 7654f86f3ab5ad87b7a224b075842a35b8b8748b (diff) | |
soc/amd/stoneyridge: Add USB OC support
Add USB overcurrent support. Adds a weak call for mainboards
that don't suport USB OC.
BUG=b:69229635
Change-Id: Ie54c7a2baa78f21cf1cd30d5ed70c8c832cf3674
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/22678
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/stoneyridge/include/soc/southbridge.h | 31 | ||||
| -rw-r--r-- | src/soc/amd/stoneyridge/usb.c | 34 |
2 files changed, 64 insertions, 1 deletions
diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h index f840fd9296..3b9ea80934 100644 --- a/src/soc/amd/stoneyridge/include/soc/southbridge.h +++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h @@ -268,6 +268,28 @@ #define PWR_RESET_CFG 0x10 #define TOGGLE_ALL_PWR_GOOD BIT(1) +#define XHCI_PM_INDIRECT_INDEX 0x48 +#define XHCI_PM_INDIRECT_DATA 0x4C +#define XHCI_OVER_CURRENT_CONTROL 0x30 + +#define EHCI_OVER_CURRENT_CONTROL 0x70 + +#define USB_OC0 0 +#define USB_OC1 1 +#define USB_OC2 2 +#define USB_OC3 3 +#define USB_OC4 4 +#define USB_OC5 5 +#define USB_OC6 6 +#define USB_OC7 7 +#define USB_OC_DISABLE 0xf +#define USB_OC_DISABLE_ALL 0xffff + +#define OC_PORT0_SHIFT 0 +#define OC_PORT1_SHIFT 4 +#define OC_PORT2_SHIFT 8 +#define OC_PORT3_SHIFT 12 + static inline int sb_sata_enable(void) { /* True if IDE or AHCI. */ @@ -322,4 +344,13 @@ int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos); int s3_save_nvram_early(u32 dword, int size, int nvram_pos); void bootblock_fch_early_init(void); +/* + * Call the mainboard to get the USB Over Current Map. The mainboard + * returns the map and 0 on Success or -1 on error or no map. There is + * a default weak function in usb.c if the mainboard doesn't have any + * over current support. + */ +int mainboard_get_xhci_oc_map(uint16_t *usb_oc_map); +int mainboard_get_ehci_oc_map(uint16_t *usb_oc_map); + #endif /* __STONEYRIDGE_H__ */ diff --git a/src/soc/amd/stoneyridge/usb.c b/src/soc/amd/stoneyridge/usb.c index 82984b9b82..0665976c89 100644 --- a/src/soc/amd/stoneyridge/usb.c +++ b/src/soc/amd/stoneyridge/usb.c @@ -20,8 +20,40 @@ #include <device/pci_ops.h> #include <device/pci_ehci.h> #include <arch/io.h> +#include <soc/pci_devs.h> #include <soc/southbridge.h> + +static void set_usb_over_current(struct device *dev) +{ + uint16_t map = USB_OC_DISABLE_ALL; + + if (dev->path.pci.devfn == XHCI_DEVFN) { + if (mainboard_get_xhci_oc_map(&map) == 0) { + xhci_pm_write32(XHCI_PM_INDIRECT_INDEX, + XHCI_OVER_CURRENT_CONTROL); + xhci_pm_write16(XHCI_PM_INDIRECT_DATA, map); + } + } + + if (dev->path.pci.devfn == EHCI1_DEVFN) { + if (mainboard_get_ehci_oc_map(&map) == 0) + pci_write_config16(dev, EHCI_OVER_CURRENT_CONTROL, map); + } +} + +int __attribute__((weak)) mainboard_get_xhci_oc_map(uint16_t *map) +{ + printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__); + return -1; +} + +int __attribute__((weak)) mainboard_get_ehci_oc_map(uint16_t *map) +{ + printk(BIOS_DEBUG, "WEAK: %s/%s called\n", __FILE__, __func__); + return -1; +} + static struct pci_operations lops_pci = { .set_subsystem = pci_dev_set_subsystem, }; @@ -30,7 +62,7 @@ static struct device_operations usb_ops = { .read_resources = pci_ehci_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, - .init = NULL, + .init = set_usb_over_current, .scan_bus = NULL, .ops_pci = &lops_pci, }; |