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Message-ID: <1428963047-23666-3-git-send-email-arun.ramamurthy@broadcom.com>
Date: Mon, 13 Apr 2015 15:10:46 -0700
From: Arun Ramamurthy <arun.ramamurthy@...adcom.com>
To: Kishon Vijay Abraham I <kishon@...com>,
Tony Prisk <linux@...sktech.co.nz>,
Alan Stern <stern@...land.harvard.edu>,
"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
Arnd Bergmann <arnd@...db.de>, Felipe Balbi <balbi@...com>,
Mathias Nyman <mathias.nyman@...ux.intel.com>,
Paul Bolle <pebolle@...cali.nl>,
Thomas Pugliese <thomas.pugliese@...il.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
David Mosberger <davidm@...uge.net>,
Peter Griffin <peter.griffin@...aro.org>,
"Gregory CLEMENT" <gregory.clement@...e-electrons.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Kevin Hao <haokexin@...il.com>
CC: <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-usb@...r.kernel.org>, Dmitry Torokhov <dtor@...gle.com>,
"Anatol Pomazau" <anatol@...gle.com>,
Jonathan Richardson <jonathar@...adcom.com>,
Scott Branden <sbranden@...adcom.com>,
Ray Jui <rjui@...adcom.com>,
<bcm-kernel-feedback-list@...adcom.com>,
Arun Ramamurthy <arun.ramamurthy@...adcom.com>
Subject: [PATCHv2 2/3] usb: ehci-platform: Use devm_of_phy_get_by_index
Getting phys by index instead of phy names so that we do
not have to create a naming scheme when multiple phys
are present
Signed-off-by: Arun Ramamurthy <arun.ramamurthy@...adcom.com>
Reviewed-by: Ray Jui <rjui@...adcom.com>
Reviewed-by: Scott Branden <sbranden@...adcom.com>
---
drivers/usb/host/Kconfig | 1 +
drivers/usb/host/ehci-platform.c | 70 ++++++++++++++--------------------------
2 files changed, 26 insertions(+), 45 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 5ad60e4..563f22d 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -284,6 +284,7 @@ config USB_EHCI_ATH79
config USB_EHCI_HCD_PLATFORM
tristate "Generic EHCI driver for a platform device"
+ select GENERIC_PHY
default n
---help---
Adds an EHCI host driver for a generic platform device, which
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index d8a75a5..a7563b9 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -88,15 +88,13 @@ static int ehci_platform_power_on(struct platform_device *dev)
}
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- if (priv->phys[phy_num]) {
- ret = phy_init(priv->phys[phy_num]);
- if (ret)
- goto err_exit_phy;
- ret = phy_power_on(priv->phys[phy_num]);
- if (ret) {
- phy_exit(priv->phys[phy_num]);
- goto err_exit_phy;
- }
+ ret = phy_init(priv->phys[phy_num]);
+ if (ret)
+ goto err_exit_phy;
+ ret = phy_power_on(priv->phys[phy_num]);
+ if (ret) {
+ phy_exit(priv->phys[phy_num]);
+ goto err_exit_phy;
}
}
@@ -104,10 +102,8 @@ static int ehci_platform_power_on(struct platform_device *dev)
err_exit_phy:
while (--phy_num >= 0) {
- if (priv->phys[phy_num]) {
- phy_power_off(priv->phys[phy_num]);
- phy_exit(priv->phys[phy_num]);
- }
+ phy_power_off(priv->phys[phy_num]);
+ phy_exit(priv->phys[phy_num]);
}
err_disable_clks:
while (--clk >= 0)
@@ -123,10 +119,8 @@ static void ehci_platform_power_off(struct platform_device *dev)
int clk, phy_num;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- if (priv->phys[phy_num]) {
- phy_power_off(priv->phys[phy_num]);
- phy_exit(priv->phys[phy_num]);
- }
+ phy_power_off(priv->phys[phy_num]);
+ phy_exit(priv->phys[phy_num]);
}
for (clk = EHCI_MAX_CLKS - 1; clk >= 0; clk--)
@@ -154,7 +148,6 @@ static int ehci_platform_probe(struct platform_device *dev)
struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
struct ehci_platform_priv *priv;
struct ehci_hcd *ehci;
- const char *phy_name;
int err, irq, phy_num, clk = 0;
if (usb_disabled())
@@ -204,36 +197,23 @@ static int ehci_platform_probe(struct platform_device *dev)
priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
"phys", "#phy-cells");
- priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;
- priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
- sizeof(struct phy *), GFP_KERNEL);
- if (!priv->phys)
- return -ENOMEM;
+ if (priv->num_phys > 0) {
+ priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
+ sizeof(struct phy *), GFP_KERNEL);
+ if (!priv->phys)
+ return -ENOMEM;
+ } else
+ priv->num_phys = 0;
for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
- err = of_property_read_string_index(
- dev->dev.of_node,
- "phy-names", phy_num,
- &phy_name);
-
- if (err < 0) {
- if (priv->num_phys > 1) {
- dev_err(&dev->dev, "phy-names not provided");
- goto err_put_hcd;
- } else
- phy_name = "usb";
- }
-
- priv->phys[phy_num] = devm_phy_get(&dev->dev,
- phy_name);
- if (IS_ERR(priv->phys[phy_num])) {
- err = PTR_ERR(priv->phys[phy_num]);
- if ((priv->num_phys > 1) ||
- (err == -EPROBE_DEFER))
- goto err_put_hcd;
- priv->phys[phy_num] = NULL;
- }
+ priv->phys[phy_num] = devm_of_phy_get_by_index(&dev->dev
+ , dev->dev.of_node
+ , phy_num);
+ if (IS_ERR(priv->phys[phy_num])) {
+ err = PTR_ERR(priv->phys[phy_num]);
+ goto err_put_hcd;
+ }
}
for (clk = 0; clk < EHCI_MAX_CLKS; clk++) {
--
2.3.4
--
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