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ipq5018: bt: Toggle ECO bit in start/stop sequence

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Add support for ECO bit toggle during IPC start/stop
messages to allow BT subsystem to do self reset

Change-Id: I4d1d31a43ea8a002eb91cc42300677339c117d71
Signed-off-by: Rajkumar Ayyasamy <quic_arajkuma@quicinc.com>
This commit is contained in:
Rajkumar Ayyasamy 2022-10-27 18:37:40 +05:30 • committed by Gerrit - the friendly Code Review server
parent 308f007e14
commit 11a742f785
4 changed files with 49 additions and 0 deletions
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31
arch/arm/cpu/armv7/qca/common/scm.c
View file

@ -693,6 +693,37 @@ int qti_pas_and_auth_reset(u32 peripheral)
return ret;
}
int qti_scm_toggle_bt_eco_bit(u32 peripheral, u32 reg_val)
{
int ret;
if (is_scm_armv8())
{
struct qca_scm_desc desc = {0};
desc.arginfo = QCA_SCM_ARGS(2);
desc.args[0] = peripheral;
desc.args[1] = reg_val;
ret = scm_call_64(SCM_SVC_BT_ECO_BIT,
SCM_BT_ECO_BIT_TOGGLE_CMD, &desc);
}
else
{
struct {
u32 proc;
u32 val;
} request;
request.proc = peripheral;
request.val = reg_val;
ret = scm_call(SCM_SVC_BT_ECO_BIT, SCM_BT_ECO_BIT_TOGGLE_CMD,
&request, sizeof(request), NULL, 0);
}
return ret;
}
#endif
#else

3
arch/arm/include/asm/arch-qca-common/scm.h
View file

@ -40,6 +40,8 @@
#define SCM_PAS_INIT_IMAGE_CMD 0x1
#define SCM_PAS_AUTH_AND_RESET_CMD 0x5
#define SCM_CMD_OTP 0x15
#define SCM_SVC_BT_ECO_BIT 0x2
#define SCM_BT_ECO_BIT_TOGGLE_CMD 0x21
#endif
/* scm_v8 */
@ -145,6 +147,7 @@ int qca_scm(u32 svc_id, u32 cmd_id, u32 ownr_id, u32 *addr, u32 len);
int qti_scm_otp(u32 peripheral);
int qti_scm_pas_init_image(u32 peripheral, u32 addr);
int qti_pas_and_auth_reset(u32 peripheral);
int qti_scm_toggle_bt_eco_bit(u32 peripheral, u32 reg_val);
#endif
#define MAX_QCA_SCM_RETS 3
#define MAX_QCA_SCM_ARGS 10

3
board/qca/arm/ipq5018/bt.h
View file

@ -24,6 +24,9 @@
#define IOCTL_IPC_BOOT 0xBE
#define IPC_TX_QSIZE 0x20
#define BT_ECO_BIT_SET 0x4
#define BT_ECO_BIT_RESET 0x0
#define TO_APPS_ADDR(a) (btmem->virt + (int)(uintptr_t)a)
#define TO_BT_ADDR(a) (a - btmem->virt)
#define IPC_LBUF_SZ(w, x, y, z) (((TO_BT_ADDR((void *)w) + w->x) - w->y) / w->z)

12
board/qca/arm/ipq5018/bt_ipc.c
View file

@ -22,6 +22,7 @@
#include <memalign.h>
#include <linux/err.h>
#include <asm/arch-qca-common/scm.h>
static void *bt_ipc_alloc_lmsg(struct bt_descriptor *btDesc, uint32_t len,
struct ipc_aux_ptr *aux_ptr, uint8_t *is_lbuf_full)
@ -185,6 +186,11 @@ static void bt_ipc_cust_msg(struct bt_descriptor *btDesc, uint8_t msgid)
switch (msgid) {
case IPC_CMD_IPC_STOP:
ret = qti_scm_toggle_bt_eco_bit(PAS_ID, BT_ECO_BIT_SET);
if (ret) {
printf("Failed to set BT ECO\n");
return;
}
printf("BT IPC Stopped, gracefully stopping APSS IPC\n");
break;
case IPC_CMD_SWITCH_TO_UART:
@ -197,6 +203,12 @@ static void bt_ipc_cust_msg(struct bt_descriptor *btDesc, uint8_t msgid)
printf("BT Crashed, gracefully stopping IPC\n");
return;
case IPC_CMD_IPC_START:
ret = qti_scm_toggle_bt_eco_bit(PAS_ID, BT_ECO_BIT_RESET);
if (ret) {
printf("Failed to reset BT ECO\n");
return;
}
btmem->tx_ctxt = (struct context_info *)((void *)
btmem->rx_ctxt + btmem->rx_ctxt->TotalMemorySize);
btmem->lmsg_ctxt.widx = 0;