From: Jules Maselbas <jmaselbas@kalray.eu>
To: barebox@lists.infradead.org
Cc: Jules Maselbas <jmaselbas@kalray.eu>
Subject: [PATCH v2 1/4] usb: dwc2: Add support for optional usb phy
Date: Thu, 10 Dec 2020 11:31:01 +0100 [thread overview]
Message-ID: <20201210103104.3816-1-jmaselbas@kalray.eu> (raw)
Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu>
---
drivers/usb/dwc2/core.h | 2 ++
drivers/usb/dwc2/dwc2.c | 24 ++++++++++++++++++++++++
drivers/usb/dwc2/dwc2.h | 1 +
3 files changed, 27 insertions(+)
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 090ca15fe..b9845b552 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -466,6 +466,8 @@ struct dwc2 {
struct dwc2_hw_params hw_params;
struct dwc2_core_params params;
+ struct phy *phy; /* optional */
+
#ifdef CONFIG_USB_DWC2_HOST
struct usb_host host;
u8 in_data_toggle[MAX_DEVICE][MAX_ENDPOINT];
diff --git a/drivers/usb/dwc2/dwc2.c b/drivers/usb/dwc2/dwc2.c
index 282e6754b..9ab3b5b53 100644
--- a/drivers/usb/dwc2/dwc2.c
+++ b/drivers/usb/dwc2/dwc2.c
@@ -50,6 +50,20 @@ static int dwc2_probe(struct device_d *dev)
dwc2->regs = IOMEM(iores->start);
dwc2->dev = dev;
+ dwc2->phy = phy_optional_get(dev, "usb2-phy");
+ if (IS_ERR(dwc2->phy)) {
+ ret = PTR_ERR(dwc2->phy);
+ return ret;
+ }
+
+ if (dwc2->phy) {
+ ret = phy_power_on(dwc2->phy);
+ if (ret == 0)
+ ret = phy_init(dwc2->phy);
+ if (ret)
+ goto error;
+ }
+
ret = dwc2_core_snpsid(dwc2);
if (ret)
goto error;
@@ -78,15 +92,25 @@ static int dwc2_probe(struct device_d *dev)
ret = dwc2_set_mode(dwc2, dwc2->dr_mode);
error:
+ if (dwc2->phy)
+ phy_power_off(dwc2->phy);
+
return ret;
}
static void dwc2_remove(struct device_d *dev)
{
struct dwc2 *dwc2 = dev->priv;
+ int ret;
dwc2_host_uninit(dwc2);
dwc2_gadget_uninit(dwc2);
+
+ if (dwc2->phy) {
+ ret = phy_exit(dwc2->phy);
+ if (ret == 0)
+ phy_power_off(dwc2->phy);
+ }
}
static const struct of_device_id dwc2_platform_dt_ids[] = {
diff --git a/drivers/usb/dwc2/dwc2.h b/drivers/usb/dwc2/dwc2.h
index 30ad90665..196f4a07f 100644
--- a/drivers/usb/dwc2/dwc2.h
+++ b/drivers/usb/dwc2/dwc2.h
@@ -2,6 +2,7 @@
#include <usb/usb.h>
#include <usb/usb_defs.h>
#include <usb/gadget.h>
+#include <linux/phy/phy.h>
#include "regs.h"
#include "core.h"
--
2.17.1
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next reply other threads:[~2020-12-10 10:31 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-10 10:31 Jules Maselbas [this message]
2020-12-10 10:31 ` [PATCH v2 2/4] usb: dwc2: Remove unnecessary functions declaration Jules Maselbas
2020-12-10 10:31 ` [PATCH v2 3/4] usb: dwc2: Fix dr_mode check in dwc2_get_dr_mode Jules Maselbas
2020-12-10 10:31 ` [PATCH v2 4/4] usb: dwc2: Rename dwc2_core_snpsid to dwc2_check_core_version Jules Maselbas
2020-12-11 15:36 ` [PATCH v2 1/4] usb: dwc2: Add support for optional usb phy Sascha Hauer
2020-12-11 16:21 ` Jules Maselbas
2020-12-14 11:03 ` [PATCH v2] fixup! " Jules Maselbas
2020-12-16 8:21 ` [PATCH v2 1/4] " Sascha Hauer
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