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usb: gadget: renesas_usbhs: add bus control functions

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this patch add DVSTCTR control function for HOST support

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Kuninori Morimoto 2011-10-10 22:01:40 -07:00 committed by Felipe Balbi
parent 11935de557
commit 258485d990
3 changed files with 50 additions and 1 deletions
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35
drivers/usb/renesas_usbhs/common.c
View File

@ -146,6 +146,33 @@ int usbhs_frame_get_num(struct usbhs_priv *priv)
return usbhs_read(priv, FRMNUM) & FRNM_MASK;
}
/*
* bus/vbus functions
*/
void usbhs_bus_send_sof_enable(struct usbhs_priv *priv)
{
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_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);
}
/*
* local functions
*/
@ -187,7 +214,6 @@ static void usbhsc_power_ctrl(struct usbhs_priv *priv, int enable)
/* USB on */
usbhs_sys_clock_ctrl(priv, enable);
usbhsc_set_buswait(priv);
} else {
/* USB off */
usbhs_sys_clock_ctrl(priv, enable);
@ -229,6 +255,10 @@ static void usbhsc_hotplug(struct usbhs_priv *priv)
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);
@ -238,6 +268,9 @@ static void usbhsc_hotplug(struct usbhs_priv *priv)
/* 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);

9
drivers/usb/renesas_usbhs/common.h
View File

@ -102,6 +102,8 @@ struct usbhs_priv;
/* DVSTCTR */
#define EXTLP (1 << 10) /* Controls the EXTLP pin output state */
#define PWEN (1 << 9) /* Controls the PWEN pin output state */
#define USBRST (1 << 6) /* Bus Reset Output */
#define UACT (1 << 4) /* USB Bus Enable */
#define RHST (0x7) /* Reset Handshake */
#define RHST_LOW_SPEED 1 /* Low-speed connection */
#define RHST_FULL_SPEED 2 /* Full-speed connection */
@ -257,6 +259,13 @@ void usbhs_sys_usb_ctrl(struct usbhs_priv *priv, int enable);
void usbhs_sys_host_ctrl(struct usbhs_priv *priv, int enable);
void usbhs_sys_function_ctrl(struct usbhs_priv *priv, int enable);
/*
* bus
*/
void usbhs_bus_send_sof_enable(struct usbhs_priv *priv);
void usbhs_bus_send_reset(struct usbhs_priv *priv);
int usbhs_vbus_ctrl(struct usbhs_priv *priv, int enable);
/*
* frame
*/

7
include/linux/usb/renesas_usbhs.h
View File

@ -82,6 +82,13 @@ struct renesas_usbhs_platform_callback {
* get VBUS status function.
*/
int (*get_vbus)(struct platform_device *pdev);
/*
* option:
*
* VBUS control is needed for Host
*/
int (*set_vbus)(struct platform_device *pdev, int enable);
};
/*