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usb: xhci-mtk: make IPPC register optional 

Make IPPC register optional to support host side of dual-role mode,
due to it is moved into common glue layer for simplification.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2016-10-19 10:28:22 +08:00 committed by Greg Kroah-Hartman
parent 77100acca9
commit 065d48cf40
2 changed files with 32 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/usb/host/xhci-mtk.c
View File

@ -94,6 +94,9 @@ static int xhci_mtk_host_enable(struct xhci_hcd_mtk *mtk)
int ret;
int i;
if (!mtk->has_ippc)
return 0;
/* power on host ip */
value = readl(&ippc->ip_pw_ctr1);
value &= ~CTRL1_IP_HOST_PDN;
@ -139,6 +142,9 @@ static int xhci_mtk_host_disable(struct xhci_hcd_mtk *mtk)
int ret;
int i;
if (!mtk->has_ippc)
return 0;
/* power down all u3 ports */
for (i = 0; i < mtk->num_u3_ports; i++) {
value = readl(&ippc->u3_ctrl_p[i]);
@ -173,6 +179,9 @@ static int xhci_mtk_ssusb_config(struct xhci_hcd_mtk *mtk)
struct mu3c_ippc_regs __iomem *ippc = mtk->ippc_regs;
u32 value;
if (!mtk->has_ippc)
return 0;
/* reset whole ip */
value = readl(&ippc->ip_pw_ctr0);
value |= CTRL0_IP_SW_RST;
@ -475,6 +484,7 @@ static void xhci_mtk_quirks(struct device *dev, struct xhci_hcd *xhci)
/* called during probe() after chip reset completes */
static int xhci_mtk_setup(struct usb_hcd *hcd)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
struct xhci_hcd_mtk *mtk = hcd_to_mtk(hcd);
int ret;
@ -482,12 +492,21 @@ static int xhci_mtk_setup(struct usb_hcd *hcd)
ret = xhci_mtk_ssusb_config(mtk);
if (ret)
return ret;
}
ret = xhci_gen_setup(hcd, xhci_mtk_quirks);
if (ret)
return ret;
if (usb_hcd_is_primary_hcd(hcd)) {
mtk->num_u3_ports = xhci->num_usb3_ports;
mtk->num_u2_ports = xhci->num_usb2_ports;
ret = xhci_mtk_sch_init(mtk);
if (ret)
return ret;
}
return xhci_gen_setup(hcd, xhci_mtk_quirks);
return ret;
}
static int xhci_mtk_probe(struct platform_device *pdev)
@ -586,7 +605,7 @@ static int xhci_mtk_probe(struct platform_device *pdev)
mtk->hcd = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, mtk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac");
hcd->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(hcd->regs)) {
ret = PTR_ERR(hcd->regs);
@ -595,11 +614,16 @@ static int xhci_mtk_probe(struct platform_device *pdev)
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
mtk->ippc_regs = devm_ioremap_resource(dev, res);
if (IS_ERR(mtk->ippc_regs)) {
ret = PTR_ERR(mtk->ippc_regs);
goto put_usb2_hcd;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ippc");
if (res) { /* ippc register is optional */
mtk->ippc_regs = devm_ioremap_resource(dev, res);
if (IS_ERR(mtk->ippc_regs)) {
ret = PTR_ERR(mtk->ippc_regs);
goto put_usb2_hcd;
}
mtk->has_ippc = true;
} else {
mtk->has_ippc = false;
}
for (phy_num = 0; phy_num < mtk->num_phys; phy_num++) {

1
drivers/usb/host/xhci-mtk.h
View File

@ -118,6 +118,7 @@ struct xhci_hcd_mtk {
struct usb_hcd *hcd;
struct mu3h_sch_bw_info *sch_array;
struct mu3c_ippc_regs __iomem *ippc_regs;
bool has_ippc;
int num_u2_ports;
int num_u3_ports;
struct regulator *vusb33;