![Yoshihiro Shimoda](/assets/img/avatar_default.png)
Since R-Car Gen3 SoC has the USB-DMAC, this driver should set
dparam->has_usb_dmac to 1. Otherwise, behavior of this driver and
the usb-dmac driver will be mismatch, then sometimes receiving data will
be corrupt.
Fixes: de18757e27
("usb: renesas_usbhs: add R-Car Gen3 power control")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
795 lines
19 KiB
C
795 lines
19 KiB
C
/*
|
|
* Renesas USB driver
|
|
*
|
|
* Copyright (C) 2011 Renesas Solutions Corp.
|
|
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
#include <linux/err.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/io.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/of_gpio.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/sysfs.h>
|
|
#include "common.h"
|
|
#include "rcar2.h"
|
|
#include "rcar3.h"
|
|
|
|
/*
|
|
* image of renesas_usbhs
|
|
*
|
|
* ex) gadget case
|
|
|
|
* mod.c
|
|
* mod_gadget.c
|
|
* mod_host.c pipe.c fifo.c
|
|
*
|
|
* +-------+ +-----------+
|
|
* | pipe0 |------>| fifo pio |
|
|
* +------------+ +-------+ +-----------+
|
|
* | mod_gadget |=====> | pipe1 |--+
|
|
* +------------+ +-------+ | +-----------+
|
|
* | pipe2 | | +-| fifo dma0 |
|
|
* +------------+ +-------+ | | +-----------+
|
|
* | mod_host | | pipe3 |<-|--+
|
|
* +------------+ +-------+ | +-----------+
|
|
* | .... | +--->| fifo dma1 |
|
|
* | .... | +-----------+
|
|
*/
|
|
|
|
|
|
#define USBHSF_RUNTIME_PWCTRL (1 << 0)
|
|
|
|
/* status */
|
|
#define usbhsc_flags_init(p) do {(p)->flags = 0; } while (0)
|
|
#define usbhsc_flags_set(p, b) ((p)->flags |= (b))
|
|
#define usbhsc_flags_clr(p, b) ((p)->flags &= ~(b))
|
|
#define usbhsc_flags_has(p, b) ((p)->flags & (b))
|
|
|
|
/*
|
|
* platform call back
|
|
*
|
|
* renesas usb support platform callback function.
|
|
* Below macro call it.
|
|
* if platform doesn't have callback, it return 0 (no error)
|
|
*/
|
|
#define usbhs_platform_call(priv, func, args...)\
|
|
(!(priv) ? -ENODEV : \
|
|
!((priv)->pfunc.func) ? 0 : \
|
|
(priv)->pfunc.func(args))
|
|
|
|
/*
|
|
* common functions
|
|
*/
|
|
u16 usbhs_read(struct usbhs_priv *priv, u32 reg)
|
|
{
|
|
return ioread16(priv->base + reg);
|
|
}
|
|
|
|
void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data)
|
|
{
|
|
iowrite16(data, priv->base + reg);
|
|
}
|
|
|
|
void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data)
|
|
{
|
|
u16 val = usbhs_read(priv, reg);
|
|
|
|
val &= ~mask;
|
|
val |= data & mask;
|
|
|
|
usbhs_write(priv, reg, val);
|
|
}
|
|
|
|
struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev)
|
|
{
|
|
return dev_get_drvdata(&pdev->dev);
|
|
}
|
|
|
|
/*
|
|
* syscfg functions
|
|
*/
|
|
static void usbhs_sys_clock_ctrl(struct usbhs_priv *priv, int enable)
|
|
{
|
|
usbhs_bset(priv, SYSCFG, SCKE, enable ? SCKE : 0);
|
|
}
|
|
|
|
void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable)
|
|
{
|
|
u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
|
|
u16 val = DCFM | DRPD | HSE | USBE;
|
|
int has_otg = usbhs_get_dparam(priv, has_otg);
|
|
|
|
if (has_otg)
|
|
usbhs_bset(priv, DVSTCTR, (EXTLP | PWEN), (EXTLP | PWEN));
|
|
|
|
/*
|
|
* if enable
|
|
*
|
|
* - select Host mode
|
|
* - D+ Line/D- Line Pull-down
|
|
*/
|
|
usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
|
|
}
|
|
|
|
void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable)
|
|
{
|
|
u16 mask = DCFM | DRPD | DPRPU | HSE | USBE;
|
|
u16 val = HSE | USBE;
|
|
|
|
/*
|
|
* if enable
|
|
*
|
|
* - select Function mode
|
|
* - D+ Line Pull-up is disabled
|
|
* When D+ Line Pull-up is enabled,
|
|
* calling usbhs_sys_function_pullup(,1)
|
|
*/
|
|
usbhs_bset(priv, SYSCFG, mask, enable ? val : 0);
|
|
}
|
|
|
|
void usbhs_sys_function_pullup(struct usbhs_priv *priv, int enable)
|
|
{
|
|
usbhs_bset(priv, SYSCFG, DPRPU, enable ? DPRPU : 0);
|
|
}
|
|
|
|
void usbhs_sys_set_test_mode(struct usbhs_priv *priv, u16 mode)
|
|
{
|
|
usbhs_write(priv, TESTMODE, mode);
|
|
}
|
|
|
|
/*
|
|
* frame functions
|
|
*/
|
|
int usbhs_frame_get_num(struct usbhs_priv *priv)
|
|
{
|
|
return usbhs_read(priv, FRMNUM) & FRNM_MASK;
|
|
}
|
|
|
|
/*
|
|
* usb request functions
|
|
*/
|
|
void usbhs_usbreq_get_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
|
|
{
|
|
u16 val;
|
|
|
|
val = usbhs_read(priv, USBREQ);
|
|
req->bRequest = (val >> 8) & 0xFF;
|
|
req->bRequestType = (val >> 0) & 0xFF;
|
|
|
|
req->wValue = usbhs_read(priv, USBVAL);
|
|
req->wIndex = usbhs_read(priv, USBINDX);
|
|
req->wLength = usbhs_read(priv, USBLENG);
|
|
}
|
|
|
|
void usbhs_usbreq_set_val(struct usbhs_priv *priv, struct usb_ctrlrequest *req)
|
|
{
|
|
usbhs_write(priv, USBREQ, (req->bRequest << 8) | req->bRequestType);
|
|
usbhs_write(priv, USBVAL, req->wValue);
|
|
usbhs_write(priv, USBINDX, req->wIndex);
|
|
usbhs_write(priv, USBLENG, req->wLength);
|
|
|
|
usbhs_bset(priv, DCPCTR, SUREQ, SUREQ);
|
|
}
|
|
|
|
/*
|
|
* bus/vbus functions
|
|
*/
|
|
void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
|
|
{
|
|
u16 status = usbhs_read(priv, DVSTCTR) & (USBRST | UACT);
|
|
|
|
if (status != USBRST) {
|
|
struct device *dev = usbhs_priv_to_dev(priv);
|
|
dev_err(dev, "usbhs should be reset\n");
|
|
}
|
|
|
|
usbhs_bset(priv, DVSTCTR, (USBRST | UACT), UACT);
|
|
}
|
|
|
|
void usbhs_bus_send_reset(struct usbhs_priv *priv)
|
|
{
|
|
usbhs_bset(priv, DVSTCTR, (USBRST | UACT), USBRST);
|
|
}
|
|
|
|
int usbhs_bus_get_speed(struct usbhs_priv *priv)
|
|
{
|
|
u16 dvstctr = usbhs_read(priv, DVSTCTR);
|
|
|
|
switch (RHST & dvstctr) {
|
|
case RHST_LOW_SPEED:
|
|
return USB_SPEED_LOW;
|
|
case RHST_FULL_SPEED:
|
|
return USB_SPEED_FULL;
|
|
case RHST_HIGH_SPEED:
|
|
return USB_SPEED_HIGH;
|
|
}
|
|
|
|
return USB_SPEED_UNKNOWN;
|
|
}
|
|
|
|
int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable)
|
|
{
|
|
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
|
|
|
|
return usbhs_platform_call(priv, set_vbus, pdev, enable);
|
|
}
|
|
|
|
static void usbhsc_bus_init(struct usbhs_priv *priv)
|
|
{
|
|
usbhs_write(priv, DVSTCTR, 0);
|
|
|
|
usbhs_vbus_ctrl(priv, 0);
|
|
}
|
|
|
|
/*
|
|
* device configuration
|
|
*/
|
|
int usbhs_set_device_config(struct usbhs_priv *priv, int devnum,
|
|
u16 upphub, u16 hubport, u16 speed)
|
|
{
|
|
struct device *dev = usbhs_priv_to_dev(priv);
|
|
u16 usbspd = 0;
|
|
u32 reg = DEVADD0 + (2 * devnum);
|
|
|
|
if (devnum > 10) {
|
|
dev_err(dev, "cannot set speed to unknown device %d\n", devnum);
|
|
return -EIO;
|
|
}
|
|
|
|
if (upphub > 0xA) {
|
|
dev_err(dev, "unsupported hub number %d\n", upphub);
|
|
return -EIO;
|
|
}
|
|
|
|
switch (speed) {
|
|
case USB_SPEED_LOW:
|
|
usbspd = USBSPD_SPEED_LOW;
|
|
break;
|
|
case USB_SPEED_FULL:
|
|
usbspd = USBSPD_SPEED_FULL;
|
|
break;
|
|
case USB_SPEED_HIGH:
|
|
usbspd = USBSPD_SPEED_HIGH;
|
|
break;
|
|
default:
|
|
dev_err(dev, "unsupported speed %d\n", speed);
|
|
return -EIO;
|
|
}
|
|
|
|
usbhs_write(priv, reg, UPPHUB(upphub) |
|
|
HUBPORT(hubport)|
|
|
USBSPD(usbspd));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* interrupt functions
|
|
*/
|
|
void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit)
|
|
{
|
|
u16 pipe_mask = (u16)GENMASK(usbhs_get_dparam(priv, pipe_size), 0);
|
|
|
|
usbhs_write(priv, sts_reg, ~(1 << bit) & pipe_mask);
|
|
}
|
|
|
|
/*
|
|
* local functions
|
|
*/
|
|
static void usbhsc_set_buswait(struct usbhs_priv *priv)
|
|
{
|
|
int wait = usbhs_get_dparam(priv, buswait_bwait);
|
|
|
|
/* set bus wait if platform have */
|
|
if (wait)
|
|
usbhs_bset(priv, BUSWAIT, 0x000F, wait);
|
|
}
|
|
|
|
/*
|
|
* platform default param
|
|
*/
|
|
|
|
/* commonly used on old SH-Mobile SoCs */
|
|
static struct renesas_usbhs_driver_pipe_config usbhsc_default_pipe[] = {
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x18, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x28, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x38, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x07, false),
|
|
};
|
|
|
|
/* commonly used on newer SH-Mobile and R-Car SoCs */
|
|
static struct renesas_usbhs_driver_pipe_config usbhsc_new_pipe[] = {
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_CONTROL, 64, 0x00, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x08, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_ISOC, 1024, 0x28, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x48, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x58, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x68, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x04, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x05, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_INT, 64, 0x06, false),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x78, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x88, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0x98, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xa8, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xb8, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xc8, true),
|
|
RENESAS_USBHS_PIPE(USB_ENDPOINT_XFER_BULK, 512, 0xd8, true),
|
|
};
|
|
|
|
/*
|
|
* power control
|
|
*/
|
|
static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
|
|
{
|
|
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
|
|
struct device *dev = usbhs_priv_to_dev(priv);
|
|
|
|
if (enable) {
|
|
/* enable PM */
|
|
pm_runtime_get_sync(dev);
|
|
|
|
/* enable platform power */
|
|
usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
|
|
|
|
/* USB on */
|
|
usbhs_sys_clock_ctrl(priv, enable);
|
|
} else {
|
|
/* USB off */
|
|
usbhs_sys_clock_ctrl(priv, enable);
|
|
|
|
/* disable platform power */
|
|
usbhs_platform_call(priv, power_ctrl, pdev, priv->base, enable);
|
|
|
|
/* disable PM */
|
|
pm_runtime_put_sync(dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* hotplug
|
|
*/
|
|
static void usbhsc_hotplug(struct usbhs_priv *priv)
|
|
{
|
|
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
|
|
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
|
|
int id;
|
|
int enable;
|
|
int cable;
|
|
int ret;
|
|
|
|
/*
|
|
* get vbus status from platform
|
|
*/
|
|
enable = usbhs_platform_call(priv, get_vbus, pdev);
|
|
|
|
/*
|
|
* get id from platform
|
|
*/
|
|
id = usbhs_platform_call(priv, get_id, pdev);
|
|
|
|
if (enable && !mod) {
|
|
if (priv->edev) {
|
|
cable = extcon_get_cable_state_(priv->edev, EXTCON_USB_HOST);
|
|
if ((cable > 0 && id != USBHS_HOST) ||
|
|
(!cable && id != USBHS_GADGET)) {
|
|
dev_info(&pdev->dev,
|
|
"USB cable plugged in doesn't match the selected role!\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
ret = usbhs_mod_change(priv, id);
|
|
if (ret < 0)
|
|
return;
|
|
|
|
dev_dbg(&pdev->dev, "%s enable\n", __func__);
|
|
|
|
/* power on */
|
|
if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
|
|
usbhsc_power_ctrl(priv, enable);
|
|
|
|
/* bus init */
|
|
usbhsc_set_buswait(priv);
|
|
usbhsc_bus_init(priv);
|
|
|
|
/* module start */
|
|
usbhs_mod_call(priv, start, priv);
|
|
|
|
} else if (!enable && mod) {
|
|
dev_dbg(&pdev->dev, "%s disable\n", __func__);
|
|
|
|
/* module stop */
|
|
usbhs_mod_call(priv, stop, priv);
|
|
|
|
/* bus init */
|
|
usbhsc_bus_init(priv);
|
|
|
|
/* power off */
|
|
if (usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
|
|
usbhsc_power_ctrl(priv, enable);
|
|
|
|
usbhs_mod_change(priv, -1);
|
|
|
|
/* reset phy for next connection */
|
|
usbhs_platform_call(priv, phy_reset, pdev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* notify hotplug
|
|
*/
|
|
static void usbhsc_notify_hotplug(struct work_struct *work)
|
|
{
|
|
struct usbhs_priv *priv = container_of(work,
|
|
struct usbhs_priv,
|
|
notify_hotplug_work.work);
|
|
usbhsc_hotplug(priv);
|
|
}
|
|
|
|
static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
|
|
{
|
|
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
|
|
int delay = usbhs_get_dparam(priv, detection_delay);
|
|
|
|
/*
|
|
* This functions will be called in interrupt.
|
|
* To make sure safety context,
|
|
* use workqueue for usbhs_notify_hotplug
|
|
*/
|
|
schedule_delayed_work(&priv->notify_hotplug_work,
|
|
msecs_to_jiffies(delay));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* platform functions
|
|
*/
|
|
static const struct of_device_id usbhs_of_match[] = {
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7790",
|
|
.data = (void *)USBHS_TYPE_RCAR_GEN2,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7791",
|
|
.data = (void *)USBHS_TYPE_RCAR_GEN2,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7794",
|
|
.data = (void *)USBHS_TYPE_RCAR_GEN2,
|
|
},
|
|
{
|
|
.compatible = "renesas,usbhs-r8a7795",
|
|
.data = (void *)USBHS_TYPE_RCAR_GEN3,
|
|
},
|
|
{
|
|
.compatible = "renesas,rcar-gen2-usbhs",
|
|
.data = (void *)USBHS_TYPE_RCAR_GEN2,
|
|
},
|
|
{
|
|
.compatible = "renesas,rcar-gen3-usbhs",
|
|
.data = (void *)USBHS_TYPE_RCAR_GEN3,
|
|
},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(of, usbhs_of_match);
|
|
|
|
static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
|
|
{
|
|
struct renesas_usbhs_platform_info *info;
|
|
struct renesas_usbhs_driver_param *dparam;
|
|
const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev);
|
|
u32 tmp;
|
|
int gpio;
|
|
|
|
info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return NULL;
|
|
|
|
dparam = &info->driver_param;
|
|
dparam->type = of_id ? (uintptr_t)of_id->data : 0;
|
|
if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp))
|
|
dparam->buswait_bwait = tmp;
|
|
gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0,
|
|
NULL);
|
|
if (gpio > 0)
|
|
dparam->enable_gpio = gpio;
|
|
|
|
if (dparam->type == USBHS_TYPE_RCAR_GEN2 ||
|
|
dparam->type == USBHS_TYPE_RCAR_GEN3)
|
|
dparam->has_usb_dmac = 1;
|
|
|
|
return info;
|
|
}
|
|
|
|
static int usbhs_probe(struct platform_device *pdev)
|
|
{
|
|
struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
|
|
struct renesas_usbhs_driver_callback *dfunc;
|
|
struct usbhs_priv *priv;
|
|
struct resource *res, *irq_res;
|
|
int ret;
|
|
|
|
/* check device node */
|
|
if (pdev->dev.of_node)
|
|
info = pdev->dev.platform_data = usbhs_parse_dt(&pdev->dev);
|
|
|
|
/* check platform information */
|
|
if (!info) {
|
|
dev_err(&pdev->dev, "no platform information\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* platform data */
|
|
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
|
if (!irq_res) {
|
|
dev_err(&pdev->dev, "Not enough Renesas USB platform resources.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* usb private data */
|
|
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
priv->base = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(priv->base))
|
|
return PTR_ERR(priv->base);
|
|
|
|
if (of_property_read_bool(pdev->dev.of_node, "extcon")) {
|
|
priv->edev = extcon_get_edev_by_phandle(&pdev->dev, 0);
|
|
if (IS_ERR(priv->edev))
|
|
return PTR_ERR(priv->edev);
|
|
}
|
|
|
|
/*
|
|
* care platform info
|
|
*/
|
|
|
|
memcpy(&priv->dparam,
|
|
&info->driver_param,
|
|
sizeof(struct renesas_usbhs_driver_param));
|
|
|
|
switch (priv->dparam.type) {
|
|
case USBHS_TYPE_RCAR_GEN2:
|
|
priv->pfunc = usbhs_rcar2_ops;
|
|
if (!priv->dparam.pipe_configs) {
|
|
priv->dparam.pipe_configs = usbhsc_new_pipe;
|
|
priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
|
|
}
|
|
break;
|
|
case USBHS_TYPE_RCAR_GEN3:
|
|
priv->pfunc = usbhs_rcar3_ops;
|
|
if (!priv->dparam.pipe_configs) {
|
|
priv->dparam.pipe_configs = usbhsc_new_pipe;
|
|
priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
|
|
}
|
|
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;
|
|
|
|
/* set default param if platform doesn't have */
|
|
if (!priv->dparam.pipe_configs) {
|
|
priv->dparam.pipe_configs = usbhsc_default_pipe;
|
|
priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_default_pipe);
|
|
}
|
|
if (!priv->dparam.pio_dma_border)
|
|
priv->dparam.pio_dma_border = 64; /* 64byte */
|
|
|
|
/* FIXME */
|
|
/* runtime power control ? */
|
|
if (priv->pfunc.get_vbus)
|
|
usbhsc_flags_set(priv, USBHSF_RUNTIME_PWCTRL);
|
|
|
|
/*
|
|
* priv settings
|
|
*/
|
|
priv->irq = irq_res->start;
|
|
if (irq_res->flags & IORESOURCE_IRQ_SHAREABLE)
|
|
priv->irqflags = IRQF_SHARED;
|
|
priv->pdev = pdev;
|
|
INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
|
|
spin_lock_init(usbhs_priv_to_lock(priv));
|
|
|
|
/* call pipe and module init */
|
|
ret = usbhs_pipe_probe(priv);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = usbhs_fifo_probe(priv);
|
|
if (ret < 0)
|
|
goto probe_end_pipe_exit;
|
|
|
|
ret = usbhs_mod_probe(priv);
|
|
if (ret < 0)
|
|
goto probe_end_fifo_exit;
|
|
|
|
/* dev_set_drvdata should be called after usbhs_mod_init */
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
/*
|
|
* deviece reset here because
|
|
* USB device might be used in boot loader.
|
|
*/
|
|
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
|
|
*
|
|
* USB phy setup might depend on CPU/Board.
|
|
* If platform has its callback functions,
|
|
* call it here.
|
|
*/
|
|
ret = usbhs_platform_call(priv, hardware_init, pdev);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "platform init failed.\n");
|
|
goto probe_end_mod_exit;
|
|
}
|
|
|
|
/* reset phy for connection */
|
|
usbhs_platform_call(priv, phy_reset, pdev);
|
|
|
|
/* power control */
|
|
pm_runtime_enable(&pdev->dev);
|
|
if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL)) {
|
|
usbhsc_power_ctrl(priv, 1);
|
|
usbhs_mod_autonomy_mode(priv);
|
|
}
|
|
|
|
/*
|
|
* manual call notify_hotplug for cold plug
|
|
*/
|
|
usbhsc_drvcllbck_notify_hotplug(pdev);
|
|
|
|
dev_info(&pdev->dev, "probed\n");
|
|
|
|
return ret;
|
|
|
|
probe_end_mod_exit:
|
|
usbhs_mod_remove(priv);
|
|
probe_end_fifo_exit:
|
|
usbhs_fifo_remove(priv);
|
|
probe_end_pipe_exit:
|
|
usbhs_pipe_remove(priv);
|
|
|
|
dev_info(&pdev->dev, "probe failed (%d)\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int usbhs_remove(struct platform_device *pdev)
|
|
{
|
|
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
|
|
struct renesas_usbhs_platform_info *info = dev_get_platdata(&pdev->dev);
|
|
struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
|
|
|
|
dev_dbg(&pdev->dev, "usb remove\n");
|
|
|
|
dfunc->notify_hotplug = NULL;
|
|
|
|
/* power off */
|
|
if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
|
|
usbhsc_power_ctrl(priv, 0);
|
|
|
|
pm_runtime_disable(&pdev->dev);
|
|
|
|
usbhs_platform_call(priv, hardware_exit, pdev);
|
|
usbhs_mod_remove(priv);
|
|
usbhs_fifo_remove(priv);
|
|
usbhs_pipe_remove(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int usbhsc_suspend(struct device *dev)
|
|
{
|
|
struct usbhs_priv *priv = dev_get_drvdata(dev);
|
|
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
|
|
|
|
if (mod) {
|
|
usbhs_mod_call(priv, stop, priv);
|
|
usbhs_mod_change(priv, -1);
|
|
}
|
|
|
|
if (mod || !usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
|
|
usbhsc_power_ctrl(priv, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int usbhsc_resume(struct device *dev)
|
|
{
|
|
struct usbhs_priv *priv = dev_get_drvdata(dev);
|
|
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
|
|
|
|
if (!usbhsc_flags_has(priv, USBHSF_RUNTIME_PWCTRL))
|
|
usbhsc_power_ctrl(priv, 1);
|
|
|
|
usbhs_platform_call(priv, phy_reset, pdev);
|
|
|
|
usbhsc_drvcllbck_notify_hotplug(pdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int usbhsc_runtime_nop(struct device *dev)
|
|
{
|
|
/* Runtime PM callback shared between ->runtime_suspend()
|
|
* and ->runtime_resume(). Simply returns success.
|
|
*
|
|
* This driver re-initializes all registers after
|
|
* pm_runtime_get_sync() anyway so there is no need
|
|
* to save and restore registers here.
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops usbhsc_pm_ops = {
|
|
.suspend = usbhsc_suspend,
|
|
.resume = usbhsc_resume,
|
|
.runtime_suspend = usbhsc_runtime_nop,
|
|
.runtime_resume = usbhsc_runtime_nop,
|
|
};
|
|
|
|
static struct platform_driver renesas_usbhs_driver = {
|
|
.driver = {
|
|
.name = "renesas_usbhs",
|
|
.pm = &usbhsc_pm_ops,
|
|
.of_match_table = of_match_ptr(usbhs_of_match),
|
|
},
|
|
.probe = usbhs_probe,
|
|
.remove = usbhs_remove,
|
|
};
|
|
|
|
module_platform_driver(renesas_usbhs_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("Renesas USB driver");
|
|
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
|