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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-21 11:33:41 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-21 11:33:41 -0700
commit61fe2d75f138992f116ee70e83f10ff2d7e79143 (patch)
treec08ba135803a93852583a2916cd96981f53cfd06 /drivers/usb/renesas_usbhs
parent499b3803d3e2f062f73bf22372b38393369ffcbf (diff)
parent8346b33fad01cfe93f0fd0e64cd32ff40bd4ba41 (diff)
downloadblackbird-op-linux-61fe2d75f138992f116ee70e83f10ff2d7e79143.tar.gz
blackbird-op-linux-61fe2d75f138992f116ee70e83f10ff2d7e79143.zip
Merge tag 'usb-for-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes: usb: patches for v3.17 merge window Surprisingly enough, while a big set of patches, the majority is composed of cleanups (using devm_*, fixing sparse errors, moving code around, adding const, etc). The highlights are addition of new support for PLX USB338x devices, and support for USB 2.0-only configurations of the DWC3 IP core. Signed-of-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/renesas_usbhs')
-rw-r--r--drivers/usb/renesas_usbhs/Makefile2
-rw-r--r--drivers/usb/renesas_usbhs/common.c66
-rw-r--r--drivers/usb/renesas_usbhs/common.h2
-rw-r--r--drivers/usb/renesas_usbhs/mod_gadget.c2
-rw-r--r--drivers/usb/renesas_usbhs/pipe.c11
-rw-r--r--drivers/usb/renesas_usbhs/pipe.h1
-rw-r--r--drivers/usb/renesas_usbhs/rcar2.c77
-rw-r--r--drivers/usb/renesas_usbhs/rcar2.h4
8 files changed, 159 insertions, 6 deletions
diff --git a/drivers/usb/renesas_usbhs/Makefile b/drivers/usb/renesas_usbhs/Makefile
index bc8aef4311a1..9e47f477b6d2 100644
--- a/drivers/usb/renesas_usbhs/Makefile
+++ b/drivers/usb/renesas_usbhs/Makefile
@@ -4,7 +4,7 @@
obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs.o
-renesas_usbhs-y := common.o mod.o pipe.o fifo.o
+renesas_usbhs-y := common.o mod.o pipe.o fifo.o rcar2.o
ifneq ($(CONFIG_USB_RENESAS_USBHS_HCD),)
renesas_usbhs-y += mod_host.o
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 17267b0a2e95..1b9bf8d83235 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -15,12 +15,14 @@
*
*/
#include <linux/err.h>
+#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include "common.h"
+#include "rcar2.h"
/*
* image of renesas_usbhs
@@ -284,6 +286,8 @@ static void usbhsc_set_buswait(struct usbhs_priv *priv)
/*
* platform default param
*/
+
+/* commonly used on old SH-Mobile SoCs */
static u32 usbhsc_default_pipe_type[] = {
USB_ENDPOINT_XFER_CONTROL,
USB_ENDPOINT_XFER_ISOC,
@@ -297,6 +301,26 @@ static u32 usbhsc_default_pipe_type[] = {
USB_ENDPOINT_XFER_INT,
};
+/* commonly used on newer SH-Mobile and R-Car SoCs */
+static u32 usbhsc_new_pipe_type[] = {
+ USB_ENDPOINT_XFER_CONTROL,
+ USB_ENDPOINT_XFER_ISOC,
+ USB_ENDPOINT_XFER_ISOC,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_INT,
+ USB_ENDPOINT_XFER_INT,
+ USB_ENDPOINT_XFER_INT,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+};
+
/*
* power control
*/
@@ -423,8 +447,7 @@ static int usbhs_probe(struct platform_device *pdev)
int ret;
/* check platform information */
- if (!info ||
- !info->platform_callback.get_id) {
+ if (!info) {
dev_err(&pdev->dev, "no platform information\n");
return -EINVAL;
}
@@ -451,13 +474,32 @@ static int usbhs_probe(struct platform_device *pdev)
/*
* care platform info
*/
- memcpy(&priv->pfunc,
- &info->platform_callback,
- sizeof(struct renesas_usbhs_platform_callback));
+
memcpy(&priv->dparam,
&info->driver_param,
sizeof(struct renesas_usbhs_driver_param));
+ switch (priv->dparam.type) {
+ case USBHS_TYPE_R8A7790:
+ case USBHS_TYPE_R8A7791:
+ priv->pfunc = usbhs_rcar2_ops;
+ if (!priv->dparam.pipe_type) {
+ priv->dparam.pipe_type = usbhsc_new_pipe_type;
+ priv->dparam.pipe_size =
+ ARRAY_SIZE(usbhsc_new_pipe_type);
+ }
+ break;
+ default:
+ if (!info->platform_callback.get_id) {
+ dev_err(&pdev->dev, "no platform callbacks");
+ return -EINVAL;
+ }
+ memcpy(&priv->pfunc,
+ &info->platform_callback,
+ sizeof(struct renesas_usbhs_platform_callback));
+ break;
+ }
+
/* set driver callback functions for platform */
dfunc = &info->driver_callback;
dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
@@ -507,6 +549,20 @@ static int usbhs_probe(struct platform_device *pdev)
*/
usbhs_sys_clock_ctrl(priv, 0);
+ /* check GPIO determining if USB function should be enabled */
+ if (priv->dparam.enable_gpio) {
+ gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL);
+ ret = !gpio_get_value(priv->dparam.enable_gpio);
+ gpio_free(priv->dparam.enable_gpio);
+ if (ret) {
+ dev_warn(&pdev->dev,
+ "USB function not selected (GPIO %d)\n",
+ priv->dparam.enable_gpio);
+ ret = -ENOTSUPP;
+ goto probe_end_mod_exit;
+ }
+ }
+
/*
* platform call
*
diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h
index c69dd2fba360..a7996da6a1bd 100644
--- a/drivers/usb/renesas_usbhs/common.h
+++ b/drivers/usb/renesas_usbhs/common.h
@@ -268,6 +268,8 @@ struct usbhs_priv {
* fifo control
*/
struct usbhs_fifo_info fifo_info;
+
+ struct usb_phy *phy;
};
/*
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 458f3766bef1..04e6505777d0 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -600,8 +600,10 @@ static int usbhsg_ep_enable(struct usb_ep *ep,
static int usbhsg_ep_disable(struct usb_ep *ep)
{
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep);
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
usbhsg_pipe_disable(uep);
+ usbhs_pipe_free(pipe);
uep->pipe->mod_private = NULL;
uep->pipe = NULL;
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c
index 7926e1c700f1..75fbcf6b102e 100644
--- a/drivers/usb/renesas_usbhs/pipe.c
+++ b/drivers/usb/renesas_usbhs/pipe.c
@@ -640,6 +640,11 @@ static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
return pipe;
}
+static void usbhsp_put_pipe(struct usbhs_pipe *pipe)
+{
+ usbhsp_flags_init(pipe);
+}
+
void usbhs_pipe_init(struct usbhs_priv *priv,
int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map))
{
@@ -710,6 +715,7 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
usbhsp_pipe_select(pipe);
usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg);
usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf);
+ usbhs_pipe_clear(pipe);
usbhs_pipe_sequence_data0(pipe);
@@ -726,6 +732,11 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
return pipe;
}
+void usbhs_pipe_free(struct usbhs_pipe *pipe)
+{
+ usbhsp_put_pipe(pipe);
+}
+
void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo)
{
if (pipe->fifo)
diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h
index 3e5349879838..406f36d050e4 100644
--- a/drivers/usb/renesas_usbhs/pipe.h
+++ b/drivers/usb/renesas_usbhs/pipe.h
@@ -75,6 +75,7 @@ struct usbhs_pipe_info {
char *usbhs_pipe_name(struct usbhs_pipe *pipe);
struct usbhs_pipe
*usbhs_pipe_malloc(struct usbhs_priv *priv, int endpoint_type, int dir_in);
+void usbhs_pipe_free(struct usbhs_pipe *pipe);
int usbhs_pipe_probe(struct usbhs_priv *priv);
void usbhs_pipe_remove(struct usbhs_priv *priv);
int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe);
diff --git a/drivers/usb/renesas_usbhs/rcar2.c b/drivers/usb/renesas_usbhs/rcar2.c
new file mode 100644
index 000000000000..e6b9dcc1c289
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/rcar2.c
@@ -0,0 +1,77 @@
+/*
+ * Renesas USB driver R-Car Gen. 2 initialization and power control
+ *
+ * Copyright (C) 2014 Ulrich Hecht
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/platform_data/gpio-rcar.h>
+#include <linux/usb/phy.h>
+#include "common.h"
+#include "rcar2.h"
+
+static int usbhs_rcar2_hardware_init(struct platform_device *pdev)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+ struct usb_phy *phy;
+
+ phy = usb_get_phy_dev(&pdev->dev, 0);
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ priv->phy = phy;
+ return 0;
+}
+
+static int usbhs_rcar2_hardware_exit(struct platform_device *pdev)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+
+ if (!priv->phy)
+ return 0;
+
+ usb_put_phy(priv->phy);
+ priv->phy = NULL;
+
+ return 0;
+}
+
+static int usbhs_rcar2_power_ctrl(struct platform_device *pdev,
+ void __iomem *base, int enable)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+
+ if (!priv->phy)
+ return -ENODEV;
+
+ if (enable) {
+ int retval = usb_phy_init(priv->phy);
+
+ if (!retval)
+ retval = usb_phy_set_suspend(priv->phy, 0);
+ return retval;
+ }
+
+ usb_phy_set_suspend(priv->phy, 1);
+ usb_phy_shutdown(priv->phy);
+ return 0;
+}
+
+static int usbhs_rcar2_get_id(struct platform_device *pdev)
+{
+ return USBHS_GADGET;
+}
+
+const struct renesas_usbhs_platform_callback usbhs_rcar2_ops = {
+ .hardware_init = usbhs_rcar2_hardware_init,
+ .hardware_exit = usbhs_rcar2_hardware_exit,
+ .power_ctrl = usbhs_rcar2_power_ctrl,
+ .get_id = usbhs_rcar2_get_id,
+};
diff --git a/drivers/usb/renesas_usbhs/rcar2.h b/drivers/usb/renesas_usbhs/rcar2.h
new file mode 100644
index 000000000000..f07f10d9b3b2
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/rcar2.h
@@ -0,0 +1,4 @@
+#include "common.h"
+
+extern const struct renesas_usbhs_platform_callback
+ usbhs_rcar2_ops;
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