diff options
Diffstat (limited to 'drivers/usb/mtu3/mtu3_plat.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_plat.c | 47 |
1 files changed, 22 insertions, 25 deletions
diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index e086630e41a9..fd0f6c5dfbc1 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -16,6 +16,7 @@ #include "mtu3.h" #include "mtu3_dr.h" +#include "mtu3_debug.h" /* u2-port0 should be powered on and enabled; */ int ssusb_check_clocks(struct ssusb_mtk *ssusb, u32 ex_clks) @@ -210,30 +211,16 @@ static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb) mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); } -/* ignore the error if the clock does not exist */ -static struct clk *get_optional_clk(struct device *dev, const char *id) -{ - struct clk *opt_clk; - - opt_clk = devm_clk_get(dev, id); - /* ignore error number except EPROBE_DEFER */ - if (IS_ERR(opt_clk) && (PTR_ERR(opt_clk) != -EPROBE_DEFER)) - opt_clk = NULL; - - return opt_clk; -} - static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) { struct device_node *node = pdev->dev.of_node; struct otg_switch_mtk *otg_sx = &ssusb->otg_switch; struct device *dev = &pdev->dev; - struct regulator *vbus; struct resource *res; int i; int ret; - ssusb->vusb33 = devm_regulator_get(&pdev->dev, "vusb33"); + ssusb->vusb33 = devm_regulator_get(dev, "vusb33"); if (IS_ERR(ssusb->vusb33)) { dev_err(dev, "failed to get vusb33\n"); return PTR_ERR(ssusb->vusb33); @@ -245,15 +232,15 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) return PTR_ERR(ssusb->sys_clk); } - ssusb->ref_clk = get_optional_clk(dev, "ref_ck"); + ssusb->ref_clk = devm_clk_get_optional(dev, "ref_ck"); if (IS_ERR(ssusb->ref_clk)) return PTR_ERR(ssusb->ref_clk); - ssusb->mcu_clk = get_optional_clk(dev, "mcu_ck"); + ssusb->mcu_clk = devm_clk_get_optional(dev, "mcu_ck"); if (IS_ERR(ssusb->mcu_clk)) return PTR_ERR(ssusb->mcu_clk); - ssusb->dma_clk = get_optional_clk(dev, "dma_ck"); + ssusb->dma_clk = devm_clk_get_optional(dev, "dma_ck"); if (IS_ERR(ssusb->dma_clk)) return PTR_ERR(ssusb->dma_clk); @@ -286,7 +273,7 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) ssusb->dr_mode = USB_DR_MODE_OTG; if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL) - return 0; + goto out; /* if host role is supported */ ret = ssusb_wakeup_of_property_parse(ssusb, node); @@ -299,15 +286,14 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) of_property_read_u32(node, "mediatek,u3p-dis-msk", &ssusb->u3p_dis_msk); - vbus = devm_regulator_get(&pdev->dev, "vbus"); - if (IS_ERR(vbus)) { + otg_sx->vbus = devm_regulator_get(dev, "vbus"); + if (IS_ERR(otg_sx->vbus)) { dev_err(dev, "failed to get vbus\n"); - return PTR_ERR(vbus); + return PTR_ERR(otg_sx->vbus); } - otg_sx->vbus = vbus; if (ssusb->dr_mode == USB_DR_MODE_HOST) - return 0; + goto out; /* if dual-role mode is supported */ otg_sx->is_u3_drd = of_property_read_bool(node, "mediatek,usb3-drd"); @@ -322,6 +308,7 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) } } +out: dev_info(dev, "dr_mode: %d, is_u3_dr: %d, u3p_dis_msk: %x, drd: %s\n", ssusb->dr_mode, otg_sx->is_u3_drd, ssusb->u3p_dis_msk, otg_sx->manual_drd_enabled ? "manual" : "auto"); @@ -354,6 +341,8 @@ static int mtu3_probe(struct platform_device *pdev) if (ret) return ret; + ssusb_debugfs_create_root(ssusb); + /* enable power domain */ pm_runtime_enable(dev); pm_runtime_get_sync(dev); @@ -401,7 +390,11 @@ static int mtu3_probe(struct platform_device *pdev) goto gadget_exit; } - ssusb_otg_switch_init(ssusb); + ret = ssusb_otg_switch_init(ssusb); + if (ret) { + dev_err(dev, "failed to initialize switch\n"); + goto host_exit; + } break; default: dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode); @@ -411,6 +404,8 @@ static int mtu3_probe(struct platform_device *pdev) return 0; +host_exit: + ssusb_host_exit(ssusb); gadget_exit: ssusb_gadget_exit(ssusb); comm_exit: @@ -418,6 +413,7 @@ comm_exit: comm_init_err: pm_runtime_put_sync(dev); pm_runtime_disable(dev); + ssusb_debugfs_remove_root(ssusb); return ret; } @@ -445,6 +441,7 @@ static int mtu3_remove(struct platform_device *pdev) ssusb_rscs_exit(ssusb); pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); + ssusb_debugfs_remove_root(ssusb); return 0; } |