Release 4.11 drivers/usb/renesas_usbhs/mod.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/interrupt.h>
#include "common.h"
#include "mod.h"
#define usbhs_priv_to_modinfo(priv) (&priv->mod_info)
#define usbhs_mod_info_call(priv, func, param...) \
({ \
struct usbhs_mod_info *info; \
info = usbhs_priv_to_modinfo(priv); \
!info->func ? 0 : \
info->func(param); \
})
/*
* autonomy
*
* these functions are used if platform doesn't have external phy.
* -> there is no "notify_hotplug" callback from platform
* -> call "notify_hotplug" by itself
* -> use own interrupt to connect/disconnect
* -> it mean module clock is always ON
* ~~~~~~~~~~~~~~~~~~~~~~~~~
*/
static int usbhsm_autonomy_get_vbus(struct platform_device *pdev)
{
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
return VBSTS & usbhs_read(priv, INTSTS0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
static int usbhsm_autonomy_irq_vbus(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state)
{
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
renesas_usbhs_call_notify_hotplug(pdev);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 34 | 100.00% | 2 | 100.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
void usbhs_mod_autonomy_mode(struct usbhs_priv *priv)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
info->irq_vbus = usbhsm_autonomy_irq_vbus;
priv->pfunc.get_vbus = usbhsm_autonomy_get_vbus;
usbhs_irq_callback_update(priv, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 41 | 100.00% | 2 | 100.00% |
| Total | 41 | 100.00% | 2 | 100.00% |
/*
* host / gadget functions
*
* renesas_usbhs host/gadget can register itself by below functions.
* these functions are called when probe
*
*/
void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *mod, int id)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
info->mod[id] = mod;
mod->priv = priv;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 43 | 100.00% | 1 | 100.00% |
| Total | 43 | 100.00% | 1 | 100.00% |
struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
struct usbhs_mod *ret = NULL;
switch (id) {
case USBHS_HOST:
case USBHS_GADGET:
ret = info->mod[id];
break;
}
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 57 | 100.00% | 1 | 100.00% |
| Total | 57 | 100.00% | 1 | 100.00% |
int usbhs_mod_is_host(struct usbhs_priv *priv)
{
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
if (!mod)
return -EINVAL;
return info->mod[USBHS_HOST] == mod;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 49 | 100.00% | 2 | 100.00% |
| Total | 49 | 100.00% | 2 | 100.00% |
struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
return info->curt;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 27 | 100.00% | 1 | 100.00% |
| Total | 27 | 100.00% | 1 | 100.00% |
int usbhs_mod_change(struct usbhs_priv *priv, int id)
{
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
struct usbhs_mod *mod = NULL;
int ret = 0;
/* id < 0 mean no current */
switch (id) {
case USBHS_HOST:
case USBHS_GADGET:
mod = info->mod[id];
break;
default:
ret = -EINVAL;
}
info->curt = mod;
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 73 | 100.00% | 1 | 100.00% |
| Total | 73 | 100.00% | 1 | 100.00% |
static irqreturn_t usbhs_interrupt(int irq, void *data);
int usbhs_mod_probe(struct usbhs_priv *priv)
{
struct device *dev = usbhs_priv_to_dev(priv);
int ret;
/*
* install host/gadget driver
*/
ret = usbhs_mod_host_probe(priv);
if (ret < 0)
return ret;
ret = usbhs_mod_gadget_probe(priv);
if (ret < 0)
goto mod_init_host_err;
/* irq settings */
ret = devm_request_irq(dev, priv->irq, usbhs_interrupt,
priv->irqflags, dev_name(dev), priv);
if (ret) {
dev_err(dev, "irq request err\n");
goto mod_init_gadget_err;
}
return ret;
mod_init_gadget_err:
usbhs_mod_gadget_remove(priv);
mod_init_host_err:
usbhs_mod_host_remove(priv);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 114 | 97.44% | 4 | 80.00% |
| Yoshihiro Shimoda | 3 | 2.56% | 1 | 20.00% |
| Total | 117 | 100.00% | 5 | 100.00% |
void usbhs_mod_remove(struct usbhs_priv *priv)
{
usbhs_mod_host_remove(priv);
usbhs_mod_gadget_remove(priv);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 20 | 100.00% | 3 | 100.00% |
| Total | 20 | 100.00% | 3 | 100.00% |
/*
* status functions
*/
int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state)
{
int state = irq_state->intsts0 & DVSQ_MASK;
switch (state) {
case POWER_STATE:
case DEFAULT_STATE:
case ADDRESS_STATE:
case CONFIGURATION_STATE:
return state;
}
return -EIO;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 44 | 100.00% | 1 | 100.00% |
| Total | 44 | 100.00% | 1 | 100.00% |
int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state)
{
/*
* return value
*
* IDLE_SETUP_STAGE
* READ_DATA_STAGE
* READ_STATUS_STAGE
* WRITE_DATA_STAGE
* WRITE_STATUS_STAGE
* NODATA_STATUS_STAGE
* SEQUENCE_ERROR
*/
return (int)irq_state->intsts0 & CTSQ_MASK;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
static int usbhs_status_get_each_irq(struct usbhs_priv *priv,
struct usbhs_irq_state *state)
{
struct usbhs_mod *mod = usbhs_mod_get_current(priv);
u16 intenb0, intenb1;
unsigned long flags;
/******************** spin lock ********************/
usbhs_lock(priv, flags);
state->intsts0 = usbhs_read(priv, INTSTS0);
intenb0 = usbhs_read(priv, INTENB0);
if (usbhs_mod_is_host(priv)) {
state->intsts1 = usbhs_read(priv, INTSTS1);
intenb1 = usbhs_read(priv, INTENB1);
} else {
state->intsts1 = intenb1 = 0;
}
/* mask */
if (mod) {
state->brdysts = usbhs_read(priv, BRDYSTS);
state->nrdysts = usbhs_read(priv, NRDYSTS);
state->bempsts = usbhs_read(priv, BEMPSTS);
state->bempsts &= mod->irq_bempsts;
state->brdysts &= mod->irq_brdysts;
}
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
/*
* Check whether the irq enable registers and the irq status are set
* when IRQF_SHARED is set.
*/
if (priv->irqflags & IRQF_SHARED) {
if (!(intenb0 & state->intsts0) &&
!(intenb1 & state->intsts1) &&
!(state->bempsts) &&
!(state->brdysts))
return -EIO;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 99 | 45.21% | 2 | 33.33% |
| Yoshihiro Shimoda | 94 | 42.92% | 2 | 33.33% |
| Nobuhiro Iwamatsu | 15 | 6.85% | 1 | 16.67% |
| Arnd Bergmann | 11 | 5.02% | 1 | 16.67% |
| Total | 219 | 100.00% | 6 | 100.00% |
/*
* interrupt
*/
#define INTSTS0_MAGIC 0xF800
/* acknowledge magical interrupt sources */
#define INTSTS1_MAGIC 0xA870
/* acknowledge magical interrupt sources */
static irqreturn_t usbhs_interrupt(int irq, void *data)
{
struct usbhs_priv *priv = data;
struct usbhs_irq_state irq_state;
if (usbhs_status_get_each_irq(priv, &irq_state) < 0)
return IRQ_NONE;
/*
* clear interrupt
*
* The hardware is _very_ picky to clear interrupt bit.
* Especially INTSTS0_MAGIC, INTSTS1_MAGIC value.
*
* see
* "Operation"
* - "Control Transfer (DCP)"
* - Function :: VALID bit should 0
*/
usbhs_write(priv, INTSTS0, ~irq_state.intsts0 & INTSTS0_MAGIC);
if (usbhs_mod_is_host(priv))
usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC);
/*
* The driver should not clear the xxxSTS after the line of
* "call irq callback functions" because each "if" statement is
* possible to call the callback function for avoiding any side effects.
*/
if (irq_state.intsts0 & BRDY)
usbhs_write(priv, BRDYSTS, ~irq_state.brdysts);
usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts);
if (irq_state.intsts0 & BEMP)
usbhs_write(priv, BEMPSTS, ~irq_state.bempsts);
/*
* call irq callback functions
* see also
* usbhs_irq_setting_update
*/
/* INTSTS0 */
if (irq_state.intsts0 & VBINT)
usbhs_mod_info_call(priv, irq_vbus, priv, &irq_state);
if (irq_state.intsts0 & DVST)
usbhs_mod_call(priv, irq_dev_state, priv, &irq_state);
if (irq_state.intsts0 & CTRT)
usbhs_mod_call(priv, irq_ctrl_stage, priv, &irq_state);
if (irq_state.intsts0 & BEMP)
usbhs_mod_call(priv, irq_empty, priv, &irq_state);
if (irq_state.intsts0 & BRDY)
usbhs_mod_call(priv, irq_ready, priv, &irq_state);
if (usbhs_mod_is_host(priv)) {
/* INTSTS1 */
if (irq_state.intsts1 & ATTCH)
usbhs_mod_call(priv, irq_attch, priv, &irq_state);
if (irq_state.intsts1 & DTCH)
usbhs_mod_call(priv, irq_dtch, priv, &irq_state);
if (irq_state.intsts1 & SIGN)
usbhs_mod_call(priv, irq_sign, priv, &irq_state);
if (irq_state.intsts1 & SACK)
usbhs_mod_call(priv, irq_sack, priv, &irq_state);
}
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 282 | 87.31% | 4 | 57.14% |
| Yoshihiro Shimoda | 25 | 7.74% | 2 | 28.57% |
| Nobuhiro Iwamatsu | 16 | 4.95% | 1 | 14.29% |
| Total | 323 | 100.00% | 7 | 100.00% |
void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod)
{
u16 intenb0 = 0;
u16 intenb1 = 0;
struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv);
/*
* BEMPENB/BRDYENB are picky.
* below method is required
*
* - clear INTSTS0
* - update BEMPENB/BRDYENB
* - update INTSTS0
*/
usbhs_write(priv, INTENB0, 0);
if (usbhs_mod_is_host(priv))
usbhs_write(priv, INTENB1, 0);
usbhs_write(priv, BEMPENB, 0);
usbhs_write(priv, BRDYENB, 0);
/*
* see also
* usbhs_interrupt
*/
/*
* it don't enable DVSE (intenb0) here
* but "mod->irq_dev_state" will be called.
*/
if (info->irq_vbus)
intenb0 |= VBSE;
if (mod) {
/*
* INTSTS0
*/
if (mod->irq_ctrl_stage)
intenb0 |= CTRE;
if (mod->irq_empty && mod->irq_bempsts) {
usbhs_write(priv, BEMPENB, mod->irq_bempsts);
intenb0 |= BEMPE;
}
if (mod->irq_ready && mod->irq_brdysts) {
usbhs_write(priv, BRDYENB, mod->irq_brdysts);
intenb0 |= BRDYE;
}
if (usbhs_mod_is_host(priv)) {
/*
* INTSTS1
*/
if (mod->irq_attch)
intenb1 |= ATTCHE;
if (mod->irq_dtch)
intenb1 |= DTCHE;
if (mod->irq_sign)
intenb1 |= SIGNE;
if (mod->irq_sack)
intenb1 |= SACKE;
}
}
if (intenb0)
usbhs_write(priv, INTENB0, intenb0);
if (usbhs_mod_is_host(priv) && intenb1)
usbhs_write(priv, INTENB1, intenb1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 221 | 90.95% | 6 | 85.71% |
| Nobuhiro Iwamatsu | 22 | 9.05% | 1 | 14.29% |
| Total | 243 | 100.00% | 7 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kuninori Morimoto | 1210 | 86.55% | 13 | 65.00% |
| Yoshihiro Shimoda | 122 | 8.73% | 4 | 20.00% |
| Nobuhiro Iwamatsu | 53 | 3.79% | 1 | 5.00% |
| Arnd Bergmann | 11 | 0.79% | 1 | 5.00% |
| Paul Bolle | 2 | 0.14% | 1 | 5.00% |
| Total | 1398 | 100.00% | 20 | 100.00% |
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