diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2018-09-21 20:53:24 +0900 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2018-09-25 16:10:12 +0530 |
| commit | 979b519c7a1bff56a212bf80cc04ae9b4131ea43 (patch) | |
| tree | b2857ea0e8f15ad872096f8e546b4fb4d295e37e /drivers/phy/renesas/phy-rcar-gen3-usb2.c | |
| parent | a602152c81a2c1c0daeae56d145d558d52a70dae (diff) | |
| download | lwn-979b519c7a1bff56a212bf80cc04ae9b4131ea43.tar.gz lwn-979b519c7a1bff56a212bf80cc04ae9b4131ea43.zip | |
phy: renesas: rcar-gen3-usb2: add is_otg_channel to use "role" sysfs
Even if a board doesn't have otg pins connection, this hardware can
change the role by a register setting. So, this patch adds
"is_otg_channel" for it.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy/renesas/phy-rcar-gen3-usb2.c')
| -rw-r--r-- | drivers/phy/renesas/phy-rcar-gen3-usb2.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 3f2efe55940c..d0f412c25981 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -86,9 +86,21 @@ struct rcar_gen3_chan { struct work_struct work; enum usb_dr_mode dr_mode; bool extcon_host; + bool is_otg_channel; bool uses_otg_pins; }; +/* + * Combination about is_otg_channel and uses_otg_pins: + * + * Parameters || Behaviors + * is_otg_channel | uses_otg_pins || irqs | role sysfs + * ---------------------+---------------++--------------+------------ + * true | true || enabled | enabled + * true | false || disabled | enabled + * false | any || disabled | disabled + */ + static void rcar_gen3_phy_usb2_work(struct work_struct *work) { struct rcar_gen3_chan *ch = container_of(work, struct rcar_gen3_chan, @@ -244,7 +256,7 @@ static ssize_t role_store(struct device *dev, struct device_attribute *attr, bool is_b_device; enum phy_mode cur_mode, new_mode; - if (!ch->uses_otg_pins || !ch->phy->init_count) + if (!ch->is_otg_channel || !ch->phy->init_count) return -EIO; if (!strncmp(buf, "host", strlen("host"))) @@ -282,7 +294,7 @@ static ssize_t role_show(struct device *dev, struct device_attribute *attr, { struct rcar_gen3_chan *ch = dev_get_drvdata(dev); - if (!ch->uses_otg_pins || !ch->phy->init_count) + if (!ch->is_otg_channel || !ch->phy->init_count) return -EIO; return sprintf(buf, "%s\n", rcar_gen3_is_host(ch) ? "host" : @@ -320,7 +332,7 @@ static int rcar_gen3_phy_usb2_init(struct phy *p) writel(USB2_OC_TIMSET_INIT, usb2_base + USB2_OC_TIMSET); /* Initialize otg part */ - if (channel->uses_otg_pins) + if (channel->is_otg_channel) rcar_gen3_init_otg(channel); return 0; @@ -444,6 +456,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) if (channel->dr_mode != USB_DR_MODE_UNKNOWN) { int ret; + channel->is_otg_channel = true; channel->uses_otg_pins = !of_property_read_bool(dev->of_node, "renesas,no-otg-pins"); channel->extcon = devm_extcon_dev_allocate(dev, @@ -487,7 +500,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) dev_err(dev, "Failed to register PHY provider\n"); ret = PTR_ERR(provider); goto error; - } else if (channel->uses_otg_pins) { + } else if (channel->is_otg_channel) { int ret; ret = device_create_file(dev, &dev_attr_role); @@ -507,7 +520,7 @@ static int rcar_gen3_phy_usb2_remove(struct platform_device *pdev) { struct rcar_gen3_chan *channel = platform_get_drvdata(pdev); - if (channel->uses_otg_pins) + if (channel->is_otg_channel) device_remove_file(&pdev->dev, &dev_attr_role); pm_runtime_disable(&pdev->dev); |