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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>
This commit is contained in:
Marc Jones 2017-11-22 22:16:31 -07:00 committed by Martin Roth
parent 7654f86f3a
commit fb4c7d250f
2 changed files with 64 additions and 1 deletions
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31
src/soc/amd/stoneyridge/include/soc/southbridge.h
View File

@ -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__ */

34
src/soc/amd/stoneyridge/usb.c
View File

@ -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,
};