kernel_samsung_a34x-permissive/drivers/muic/common/muic_notifier.c
2024-04-28 15:51:13 +02:00

618 lines
17 KiB
C

#define pr_fmt(fmt) "[MUIC] " fmt
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/notifier.h>
#if IS_ENABLED(CONFIG_ANDROID_SWITCH) || IS_ENABLED(CONFIG_SWITCH)
#include <linux/switch.h>
#endif /* CONFIG_ANDROID_SWITCH || CONFIG_SWITCH */
#include <linux/muic/common/muic.h>
#include <linux/muic/common/muic_notifier.h>
#include <linux/sec_class.h>
#define SET_MUIC_NOTIFIER_BLOCK(nb, fn, dev) do { \
(nb)->notifier_call = (fn); \
(nb)->priority = (dev); \
} while (0)
#define DESTROY_MUIC_NOTIFIER_BLOCK(nb) \
SET_MUIC_NOTIFIER_BLOCK(nb, NULL, -1)
struct device *switch_device;
EXPORT_SYMBOL(switch_device);
static struct muic_notifier_struct muic_notifier;
#if IS_ENABLED(CONFIG_PDIC_SLSI_NON_MCU)
static struct muic_notifier_struct muic_pdic_notifier;
#endif
static int muic_uses_new_noti;
#if IS_ENABLED(CONFIG_PDIC_SLSI_NON_MCU)
static int muic_pdic_uses_new_noti;
#endif
static int muic_notifier_init_done;
static int muic_notifier_init(void);
#if IS_ENABLED(CONFIG_SEC_FACTORY)
#if IS_ENABLED(CONFIG_ANDROID_SWITCH) || IS_ENABLED(CONFIG_SWITCH)
struct switch_dev switch_muic_dev = {
.name = "attached_muic_cable",
};
static void send_muic_cable_intent(int type)
{
pr_info("%s: MUIC attached_muic_cable type(%d)\n", __func__, type);
switch_set_state(&switch_muic_dev, type);
}
#endif /* CONFIG_ANDROID_SWITCH || CONFIG_SWITCH */
#endif
void muic_notifier_set_new_noti(bool flag)
{
muic_uses_new_noti = flag ? 1 : 0;
}
EXPORT_SYMBOL(muic_notifier_set_new_noti);
static void __set_noti_cxt_dest(int attach, int type, int dest)
{
if (type < 0) {
muic_notifier.cmd = attach;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
muic_notifier.cxt.attach = attach;
muic_notifier.cxt.dest = dest;
#endif
return;
}
/* Old Interface */
muic_notifier.cmd = attach;
muic_notifier.attached_dev = type;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
/* New Interface */
#if defined(CONFIG_USE_DEDICATED_MUIC)
muic_notifier.cxt.src = PDIC_NOTIFY_DEV_DEDICATED_MUIC;
#else
muic_notifier.cxt.src = PDIC_NOTIFY_DEV_MUIC;
#endif
muic_notifier.cxt.dest = dest;
muic_notifier.cxt.id = PDIC_NOTIFY_ID_ATTACH;
muic_notifier.cxt.attach = attach;
muic_notifier.cxt.cable_type = type;
muic_notifier.cxt.rprd = 0;
#endif
}
static void __set_noti_cxt(int attach, int type)
{
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
__set_noti_cxt_dest(attach, type, PDIC_NOTIFY_DEV_ALL);
#else
__set_noti_cxt_dest(attach, type, 0);
#endif
}
#if IS_ENABLED(CONFIG_PDIC_SLSI_NON_MCU)
static void __set_pdic_noti_cxt(int attach, int type)
{
if (type < 0) {
muic_pdic_notifier.cmd = attach;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
muic_pdic_notifier.cxt.attach = attach;
#endif
return;
}
/* Old Interface */
muic_pdic_notifier.cmd = attach;
muic_pdic_notifier.attached_dev = type;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
/* New Interface */
#if defined(CONFIG_USE_DEDICATED_MUIC)
muic_pdic_notifier.cxt.src = PDIC_NOTIFY_DEV_DEDICATED_MUIC;
#else
muic_pdic_notifier.cxt.src = PDIC_NOTIFY_DEV_MUIC;
#endif
muic_pdic_notifier.cxt.dest = PDIC_NOTIFY_DEV_ALL;
muic_pdic_notifier.cxt.id = PDIC_NOTIFY_ID_ATTACH;
muic_pdic_notifier.cxt.attach = attach;
muic_pdic_notifier.cxt.cable_type = type;
muic_pdic_notifier.cxt.rprd = 0;
#endif
}
#endif
#if IS_ENABLED(CONFIG_MUIC_SM5504_POGO)
static void __set_pogo_noti_cxt(int attach, int type)
{
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
if (type < 0) {
muic_notifier.pogo_cxt.attach = attach;
return;
}
/* New Interface */
muic_notifier.pogo_cxt.src = PDIC_NOTIFY_DEV_MUIC;
muic_notifier.pogo_cxt.dest = PDIC_NOTIFY_DEV_ALL;
muic_notifier.pogo_cxt.id = PDIC_NOTIFY_ID_POGO;
muic_notifier.pogo_cxt.attach = attach;
muic_notifier.pogo_cxt.cable_type = type;
muic_notifier.pogo_cxt.rprd = 0;
#endif
}
#endif /* CONFIG_MUIC_SM5504_POGO */
int muic_notifier_register(struct notifier_block *nb, notifier_fn_t notifier,
muic_notifier_device_t listener)
{
int ret = 0;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
void *pcxt;
#endif
pr_info("%s: listener=%d register\n", __func__, listener);
if (!muic_notifier_init_done)
muic_notifier_init();
SET_MUIC_NOTIFIER_BLOCK(nb, notifier, listener);
ret = blocking_notifier_chain_register(&(muic_notifier.notifier_call_chain), nb);
if (ret < 0)
pr_err("%s: blocking_notifier_chain_register error(%d)\n",
__func__, ret);
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
pcxt = muic_uses_new_noti ? &(muic_notifier.cxt) :
(void *)&(muic_notifier.attached_dev);
/* current muic's attached_device status notify */
nb->notifier_call(nb, muic_notifier.cxt.attach, pcxt);
#if IS_ENABLED(CONFIG_MUIC_SM5504_POGO)
nb->notifier_call(nb, muic_notifier.pogo_cxt.attach, &(muic_notifier.pogo_cxt));
#endif /* CONFIG_MUIC_SM5504_POGO */
#else
nb->notifier_call(nb, muic_notifier.cmd,
&(muic_notifier.attached_dev));
#endif
return ret;
}
EXPORT_SYMBOL(muic_notifier_register);
int muic_notifier_unregister(struct notifier_block *nb)
{
int ret = 0;
pr_info("%s: listener=%d unregister\n", __func__, nb->priority);
ret = blocking_notifier_chain_unregister(&(muic_notifier.notifier_call_chain), nb);
if (ret < 0)
pr_err("%s: blocking_notifier_chain_unregister error(%d)\n",
__func__, ret);
DESTROY_MUIC_NOTIFIER_BLOCK(nb);
return ret;
}
EXPORT_SYMBOL(muic_notifier_unregister);
static int muic_notifier_notify(void)
{
int ret = 0;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
void *pcxt;
pr_info("%s: CMD=%d, DATA=%d\n", __func__, muic_notifier.cxt.attach,
muic_notifier.cxt.cable_type);
pcxt = muic_uses_new_noti ? &(muic_notifier.cxt) :
(void *)&(muic_notifier.attached_dev);
ret = blocking_notifier_call_chain(&(muic_notifier.notifier_call_chain),
muic_notifier.cxt.attach, pcxt);
#else
pr_info("%s: CMD=%d, DATA=%d\n", __func__, muic_notifier.cmd,
muic_notifier.attached_dev);
ret = blocking_notifier_call_chain(&(muic_notifier.notifier_call_chain),
muic_notifier.cmd, &(muic_notifier.attached_dev));
#endif
#if IS_ENABLED(CONFIG_SEC_FACTORY)
#if IS_ENABLED(CONFIG_ANDROID_SWITCH) || IS_ENABLED(CONFIG_SWITCH)
#if defined(CONFIG_MUIC_SUPPORT_PDIC) && defined(CONFIG_PDIC_NOTIFIER)
if (muic_notifier.cxt.attach != 0)
send_muic_cable_intent(muic_notifier.cxt.cable_type);
else
send_muic_cable_intent(0);
#else
if (muic_notifier.cmd != 0)
send_muic_cable_intent(muic_notifier.attached_dev);
else
send_muic_cable_intent(0);
#if IS_ENABLED(CONFIG_MUIC_SM5504_POGO)
if (muic_notifier.pogo_cxt.cable_type)
send_muic_cable_intent(muic_notifier.pogo_cxt.cable_type);
#endif /* CONFIG_MUIC_SM5504_POGO */
#endif /* CONFIG_MUIC_SUPPORT_PDIC */
#endif /* CONFIG_ANDROID_SWITCH || CONFIG_SWITCH */
#endif /* CONFIG_SEC_FACTORY */
switch (ret) {
case NOTIFY_STOP_MASK:
case NOTIFY_BAD:
pr_err("%s: notify error occur(0x%x)\n", __func__, ret);
break;
case NOTIFY_DONE:
case NOTIFY_OK:
pr_info("%s: notify done(0x%x)\n", __func__, ret);
break;
default:
pr_info("%s: notify status unknown(0x%x)\n", __func__, ret);
break;
}
return ret;
}
#if IS_ENABLED(CONFIG_PDIC_SLSI_NON_MCU)
int muic_pdic_notifier_register(struct notifier_block *nb, notifier_fn_t notifier,
muic_notifier_device_t listener)
{
int ret = 0;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
void *pcxt;
#endif
pr_info("%s: listener=%d register\n", __func__, listener);
SET_MUIC_NOTIFIER_BLOCK(nb, notifier, listener);
ret = blocking_notifier_chain_register(&(muic_pdic_notifier.notifier_call_chain), nb);
if (ret < 0)
pr_err("%s: blocking_notifier_chain_register error(%d)\n",
__func__, ret);
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
pcxt = muic_pdic_uses_new_noti ? &(muic_pdic_notifier.cxt) : \
(void *)&(muic_pdic_notifier.attached_dev);
/* current muic's attached_device status notify */
nb->notifier_call(nb, muic_pdic_notifier.cxt.attach, pcxt);
#else
nb->notifier_call(nb, muic_pdic_notifier.cmd,
&(muic_pdic_notifier.attached_dev));
#endif
return ret;
}
EXPORT_SYMBOL(muic_pdic_notifier_register);
int muic_pdic_notifier_unregister(struct notifier_block *nb)
{
int ret = 0;
pr_info("%s: listener=%d unregister\n", __func__, nb->priority);
ret = blocking_notifier_chain_unregister(&(muic_pdic_notifier.notifier_call_chain), nb);
if (ret < 0)
pr_err("%s: blocking_notifier_chain_unregister error(%d)\n",
__func__, ret);
DESTROY_MUIC_NOTIFIER_BLOCK(nb);
return ret;
}
EXPORT_SYMBOL(muic_pdic_notifier_unregister);
static int muic_pdic_notifier_notify(void)
{
int ret = 0;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
void *pcxt;
pr_info("%s: CMD=%d, DATA=%d\n", __func__, muic_pdic_notifier.cxt.attach,
muic_pdic_notifier.cxt.cable_type);
pcxt = muic_pdic_uses_new_noti ? &(muic_pdic_notifier.cxt) : \
(void *)&(muic_pdic_notifier.attached_dev);
ret = blocking_notifier_call_chain(&(muic_pdic_notifier.notifier_call_chain),
muic_pdic_notifier.cxt.attach, pcxt);
#else
pr_info("%s: CMD=%d, DATA=%d\n", __func__, muic_pdic_notifier.cmd,
muic_pdic_notifier.attached_dev);
ret = blocking_notifier_call_chain(&(muic_pdic_notifier.notifier_call_chain),
muic_pdic_notifier.cmd, &(muic_pdic_notifier.attached_dev));
#endif
switch (ret) {
case NOTIFY_STOP_MASK:
case NOTIFY_BAD:
pr_err("%s: notify error occur(0x%x)\n", __func__, ret);
break;
case NOTIFY_DONE:
case NOTIFY_OK:
pr_info("%s: notify done(0x%x)\n", __func__, ret);
break;
default:
pr_info("%s: notify status unknown(0x%x)\n", __func__, ret);
break;
}
return ret;
}
#endif /* CONFIG_PDIC_SLSI_NON_MCU */
#if IS_ENABLED(CONFIG_MUIC_SM5504_POGO)
static int muic_pogo_notifier_notify(void)
{
int ret = 0;
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
void *pcxt = &(muic_notifier.pogo_cxt);
pr_info("%s: CMD=%d, DATA=%d\n", __func__, muic_notifier.pogo_cxt.attach,
muic_notifier.pogo_cxt.cable_type);
ret = blocking_notifier_call_chain(&(muic_notifier.notifier_call_chain),
muic_notifier.pogo_cxt.attach, pcxt);
#endif
#if IS_ENABLED(CONFIG_SEC_FACTORY)
#if defined(CONFIG_MUIC_SUPPORT_PDIC) && defined(CONFIG_PDIC_NOTIFIER)
if (muic_notifier.pogo_cxt.attach != 0)
send_muic_cable_intent(muic_notifier.pogo_cxt.cable_type);
else
send_muic_cable_intent(0);
if (muic_notifier.cxt.cable_type)
send_muic_cable_intent(muic_notifier.cxt.cable_type);
#endif /* CONFIG_MUIC_SUPPORT_CCIC */
#endif /* CONFIG_SEC_FACTORY */
switch (ret) {
case NOTIFY_STOP_MASK:
case NOTIFY_BAD:
pr_err("%s: notify error occur(0x%x)\n", __func__, ret);
break;
case NOTIFY_DONE:
case NOTIFY_OK:
pr_info("%s: notify done(0x%x)\n", __func__, ret);
break;
default:
pr_info("%s: notify status unknown(0x%x)\n", __func__, ret);
break;
}
return ret;
}
void muic_pogo_notifier_attach_attached_dev(muic_attached_dev_t new_dev)
{
pr_info("%s: (%d)\n", __func__, new_dev);
__set_pogo_noti_cxt(MUIC_NOTIFY_CMD_ATTACH, new_dev);
/* muic's attached_device attach broadcast */
muic_pogo_notifier_notify();
}
EXPORT_SYMBOL(muic_pogo_notifier_attach_attached_dev);
void muic_pogo_notifier_detach_attached_dev(muic_attached_dev_t cur_dev)
{
pr_info("%s: (%d)\n", __func__, cur_dev);
__set_pogo_noti_cxt(MUIC_NOTIFY_CMD_DETACH, -1);
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
if (muic_notifier.pogo_cxt.cable_type != cur_dev)
pr_warn("%s: attached_dev of muic_notifier(%d) != muic_data(%d)\n",
__func__, muic_notifier.pogo_cxt.cable_type, cur_dev);
if (muic_notifier.pogo_cxt.cable_type != ATTACHED_DEV_NONE_MUIC) {
/* muic's attached_device detach broadcast */
muic_pogo_notifier_notify();
}
#endif
__set_pogo_noti_cxt(0, ATTACHED_DEV_NONE_MUIC);
}
EXPORT_SYMBOL(muic_pogo_notifier_detach_attached_dev);
#endif /* CONFIG_MUIC_SM5504_POGO */
void muic_notifier_attach_attached_dev(muic_attached_dev_t new_dev)
{
pr_info("%s: (%d)\n", __func__, new_dev);
__set_noti_cxt(MUIC_NOTIFY_CMD_ATTACH, new_dev);
/* muic's attached_device attach broadcast */
muic_notifier_notify();
}
EXPORT_SYMBOL(muic_notifier_attach_attached_dev);
void muic_pdic_notifier_attach_attached_dev(muic_attached_dev_t new_dev)
{
pr_info("%s: (%d)\n", __func__, new_dev);
#if IS_ENABLED(CONFIG_PDIC_SLSI_NON_MCU)
__set_pdic_noti_cxt(MUIC_PDIC_NOTIFY_CMD_ATTACH, new_dev);
/* muic's attached_device attach broadcast */
muic_pdic_notifier_notify();
#else
__set_noti_cxt(MUIC_PDIC_NOTIFY_CMD_ATTACH, new_dev);
/* muic's attached_device attach broadcast */
muic_notifier_notify();
#endif
}
EXPORT_SYMBOL(muic_pdic_notifier_attach_attached_dev);
void muic_pdic_notifier_detach_attached_dev(muic_attached_dev_t new_dev)
{
pr_info("%s: (%d)\n", __func__, new_dev);
#if IS_ENABLED(CONFIG_PDIC_SLSI_NON_MCU)
__set_pdic_noti_cxt(MUIC_PDIC_NOTIFY_CMD_DETACH, new_dev);
/* muic's attached_device attach broadcast */
muic_pdic_notifier_notify();
#else
__set_noti_cxt(MUIC_PDIC_NOTIFY_CMD_DETACH, muic_notifier.attached_dev);
/* muic's attached_device attach broadcast */
muic_notifier_notify();
#endif
}
EXPORT_SYMBOL(muic_pdic_notifier_detach_attached_dev);
void muic_notifier_detach_attached_dev(muic_attached_dev_t cur_dev)
{
pr_info("%s: (%d)\n", __func__, cur_dev);
__set_noti_cxt(MUIC_NOTIFY_CMD_DETACH, -1);
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
if (muic_notifier.cxt.cable_type != cur_dev)
pr_warn("%s: attached_dev of muic_notifier(%d) != muic_data(%d)\n",
__func__, muic_notifier.cxt.cable_type, cur_dev);
if (muic_notifier.cxt.cable_type != ATTACHED_DEV_NONE_MUIC) {
/* muic's attached_device detach broadcast */
muic_notifier_notify();
}
#else
if (muic_notifier.attached_dev != cur_dev)
pr_warn("%s: attached_dev of muic_notifier(%d) != muic_data(%d)\n",
__func__, muic_notifier.attached_dev, cur_dev);
if (muic_notifier.attached_dev != ATTACHED_DEV_NONE_MUIC) {
/* muic's attached_device detach broadcast */
muic_notifier_notify();
}
#endif
__set_noti_cxt(0, ATTACHED_DEV_NONE_MUIC);
}
EXPORT_SYMBOL(muic_notifier_detach_attached_dev);
void muic_notifier_logically_attach_attached_dev(muic_attached_dev_t new_dev)
{
pr_info("%s: (%d)\n", __func__, new_dev);
__set_noti_cxt(MUIC_NOTIFY_CMD_ATTACH, new_dev);
/* muic's attached_device attach broadcast */
muic_notifier_notify();
}
EXPORT_SYMBOL(muic_notifier_logically_attach_attached_dev);
void muic_notifier_logically_detach_attached_dev(muic_attached_dev_t cur_dev)
{
pr_info("%s: (%d)\n", __func__, cur_dev);
__set_noti_cxt(MUIC_NOTIFY_CMD_DETACH, cur_dev);
/* muic's attached_device detach broadcast */
muic_notifier_notify();
__set_noti_cxt(0, ATTACHED_DEV_NONE_MUIC);
}
EXPORT_SYMBOL(muic_notifier_logically_detach_attached_dev);
#if IS_ENABLED(CONFIG_VIRTUAL_MUIC)
void vt_muic_notifier_attach_attached_dev(muic_attached_dev_t new_dev)
{
pr_info("%s: (%d)\n", __func__, new_dev);
__set_noti_cxt_dest(MUIC_NOTIFY_CMD_ATTACH, new_dev, PDIC_NOTIFY_DEV_PDIC);
/* muic's attached_device attach broadcast */
muic_notifier_notify();
}
EXPORT_SYMBOL(vt_muic_notifier_attach_attached_dev);
void vt_muic_notifier_detach_attached_dev(muic_attached_dev_t cur_dev)
{
pr_info("%s: (%d)\n", __func__, cur_dev);
__set_noti_cxt_dest(MUIC_NOTIFY_CMD_DETACH, -1, PDIC_NOTIFY_DEV_PDIC);
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
if (muic_notifier.cxt.cable_type != cur_dev)
pr_warn("%s: attached_dev of muic_notifier(%d) != muic_data(%d)\n",
__func__, muic_notifier.cxt.cable_type, cur_dev);
if (muic_notifier.cxt.cable_type != ATTACHED_DEV_NONE_MUIC) {
/* muic's attached_device detach broadcast */
muic_notifier_notify();
}
#else
if (muic_notifier.attached_dev != cur_dev)
pr_warn("%s: attached_dev of muic_notifier(%d) != muic_data(%d)\n",
__func__, muic_notifier.attached_dev, cur_dev);
if (muic_notifier.attached_dev != ATTACHED_DEV_NONE_MUIC) {
/* muic's attached_device detach broadcast */
muic_notifier_notify();
}
#endif
__set_noti_cxt(0, ATTACHED_DEV_NONE_MUIC);
}
EXPORT_SYMBOL(vt_muic_notifier_detach_attached_dev);
#endif
static int muic_notifier_init(void)
{
int ret = 0;
pr_info("%s\n", __func__);
if (muic_notifier_init_done) {
pr_info("%s already registered\n", __func__);
return ret;
}
muic_notifier_init_done = 1;
#if IS_ENABLED(CONFIG_DRV_SAMSUNG)
switch_device = sec_device_create(NULL, "switch");
if (IS_ERR(switch_device)) {
pr_err("%s Failed to create device(switch)!\n", __func__);
ret = -ENODEV;
}
#endif
#if IS_ENABLED(CONFIG_PDIC_NOTIFIER)
muic_uses_new_noti = 1;
#endif
BLOCKING_INIT_NOTIFIER_HEAD(&(muic_notifier.notifier_call_chain));
__set_noti_cxt(0, ATTACHED_DEV_NONE_MUIC);
#if IS_ENABLED(CONFIG_PDIC_SLSI_NON_MCU)
BLOCKING_INIT_NOTIFIER_HEAD(&(muic_pdic_notifier.notifier_call_chain));
__set_pdic_noti_cxt(0, ATTACHED_DEV_UNKNOWN_MUIC);
muic_pdic_uses_new_noti = 1;
#endif
#if IS_ENABLED(CONFIG_MUIC_SM5504_POGO)
__set_pogo_noti_cxt(0, ATTACHED_DEV_NONE_MUIC);
#endif /* CONFIG_MUIC_SM5504_POGO */
#if IS_ENABLED(CONFIG_SEC_FACTORY)
#if IS_ENABLED(CONFIG_ANDROID_SWITCH) || IS_ENABLED(CONFIG_SWITCH)
ret = switch_dev_register(&switch_muic_dev);
if (ret < 0)
pr_err("%s: Failed to register attached_muic_cable switch(%d)\n",
__func__, ret);
#endif /* CONFIG_ANDROID_SWITCH || CONFIG_SWITCH */
#endif
return ret;
}
static void __exit muic_notifier_exit(void)
{
pr_info("%s: exit\n", __func__);
}
device_initcall(muic_notifier_init);
module_exit(muic_notifier_exit);
MODULE_AUTHOR("Samsung USB Team");
MODULE_DESCRIPTION("Muic Notifier");
MODULE_LICENSE("GPL");