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path: root/drivers/usb/renesas_usbhs/mod.c
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Diffstat (limited to 'drivers/usb/renesas_usbhs/mod.c')
-rw-r--r--drivers/usb/renesas_usbhs/mod.c121
1 files changed, 90 insertions, 31 deletions
diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c
index a577f8f4064..6a030b931a3 100644
--- a/drivers/usb/renesas_usbhs/mod.c
+++ b/drivers/usb/renesas_usbhs/mod.c
@@ -16,8 +16,8 @@
*/
#include <linux/interrupt.h>
-#include "./common.h"
-#include "./mod.h"
+#include "common.h"
+#include "mod.h"
#define usbhs_priv_to_modinfo(priv) (&priv->mod_info)
#define usbhs_mod_info_call(priv, func, param...) \
@@ -50,7 +50,9 @@ static int usbhsm_autonomy_irq_vbus(struct usbhs_priv *priv,
{
struct platform_device *pdev = usbhs_priv_to_pdev(priv);
- return usbhsc_drvcllbck_notify_hotplug(pdev);
+ renesas_usbhs_call_notify_hotplug(pdev);
+
+ return 0;
}
void usbhs_mod_autonomy_mode(struct usbhs_priv *priv)
@@ -58,7 +60,7 @@ 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;
+ priv->pfunc.get_vbus = usbhsm_autonomy_get_vbus;
usbhs_irq_callback_update(priv, NULL);
}
@@ -93,8 +95,9 @@ struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id)
return ret;
}
-int usbhs_mod_is_host(struct usbhs_priv *priv, struct usbhs_mod *mod)
+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)
@@ -139,13 +142,17 @@ int usbhs_mod_probe(struct usbhs_priv *priv)
/*
* install host/gadget driver
*/
- ret = usbhs_mod_gadget_probe(priv);
+ 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 = request_irq(priv->irq, usbhs_interrupt,
- IRQF_DISABLED, dev_name(dev), priv);
+ 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;
@@ -155,33 +162,21 @@ int usbhs_mod_probe(struct usbhs_priv *priv)
mod_init_gadget_err:
usbhs_mod_gadget_remove(priv);
+mod_init_host_err:
+ usbhs_mod_host_remove(priv);
return ret;
}
void usbhs_mod_remove(struct usbhs_priv *priv)
{
+ usbhs_mod_host_remove(priv);
usbhs_mod_gadget_remove(priv);
- free_irq(priv->irq, priv);
}
/*
* status functions
*/
-int usbhs_status_get_usb_speed(struct usbhs_irq_state *irq_state)
-{
- switch (irq_state->dvstctr & RHST) {
- 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_status_get_device_state(struct usbhs_irq_state *irq_state)
{
int state = irq_state->intsts0 & DVSQ_MASK;
@@ -213,15 +208,17 @@ int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state)
return (int)irq_state->intsts0 & CTSQ_MASK;
}
-static void usbhs_status_get_each_irq(struct usbhs_priv *priv,
- struct usbhs_irq_state *state)
+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;
state->intsts0 = usbhs_read(priv, INTSTS0);
state->intsts1 = usbhs_read(priv, INTSTS1);
- state->dvstctr = usbhs_read(priv, DVSTCTR);
+ intenb0 = usbhs_read(priv, INTENB0);
+ intenb1 = usbhs_read(priv, INTENB1);
/* mask */
if (mod) {
@@ -232,6 +229,20 @@ static void usbhs_status_get_each_irq(struct usbhs_priv *priv,
state->bempsts &= mod->irq_bempsts;
state->brdysts &= mod->irq_brdysts;
}
+
+ /*
+ * 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;
}
/*
@@ -244,7 +255,8 @@ static irqreturn_t usbhs_interrupt(int irq, void *data)
struct usbhs_priv *priv = data;
struct usbhs_irq_state irq_state;
- usbhs_status_get_each_irq(priv, &irq_state);
+ if (usbhs_status_get_each_irq(priv, &irq_state) < 0)
+ return IRQ_NONE;
/*
* clear interrupt
@@ -260,15 +272,17 @@ static irqreturn_t usbhs_interrupt(int irq, void *data)
usbhs_write(priv, INTSTS0, ~irq_state.intsts0 & INTSTS0_MAGIC);
usbhs_write(priv, INTSTS1, ~irq_state.intsts1 & INTSTS1_MAGIC);
- usbhs_write(priv, BRDYSTS, 0);
- usbhs_write(priv, NRDYSTS, 0);
- usbhs_write(priv, BEMPSTS, 0);
+ usbhs_write(priv, BRDYSTS, ~irq_state.brdysts);
+ usbhs_write(priv, NRDYSTS, ~irq_state.nrdysts);
+ 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);
@@ -284,15 +298,38 @@ static irqreturn_t usbhs_interrupt(int irq, void *data)
if (irq_state.intsts0 & BRDY)
usbhs_mod_call(priv, irq_ready, priv, &irq_state);
+ /* 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;
}
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);
+ usbhs_write(priv, INTENB1, 0);
usbhs_write(priv, BEMPENB, 0);
usbhs_write(priv, BRDYENB, 0);
@@ -310,6 +347,9 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod)
intenb0 |= VBSE;
if (mod) {
+ /*
+ * INTSTS0
+ */
if (mod->irq_ctrl_stage)
intenb0 |= CTRE;
@@ -322,7 +362,26 @@ void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod)
usbhs_write(priv, BRDYENB, mod->irq_brdysts);
intenb0 |= BRDYE;
}
+
+ /*
+ * 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;
}
- usbhs_write(priv, INTENB0, intenb0);
+ if (intenb0)
+ usbhs_write(priv, INTENB0, intenb0);
+
+ if (intenb1)
+ usbhs_write(priv, INTENB1, intenb1);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 13:22:26 +0000