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generic: 6.6: backport support for SDX75-based MHI 5G modems

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Also backport most recent MHI modem additions to Linux 6.6.
Adds support for generic SDX75-based modems.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2024-03-15 18:04:53 +00:00
parent e4a4c91d8b
commit 6da3c9ddbc
4 changed files with 266 additions and 1 deletions
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175
target/linux/generic/backport-6.6/850-v6.8-bus-mhi-host-Add-a-separate-timeout-parameter-for-wa.patch Normal file
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@ -0,0 +1,175 @@
From 6ab3d50b106c9aea123a80551a6c9deace83b914 Mon Sep 17 00:00:00 2001
From: Qiang Yu <quic_qianyu@quicinc.com>
Date: Tue, 7 Nov 2023 16:14:49 +0800
Subject: [PATCH] bus: mhi: host: Add a separate timeout parameter for waiting
ready
Some devices(eg. SDX75) take longer than expected (default, 8 seconds) to
set ready after reboot. Hence add optional ready timeout parameter and pass
the appropriate timeout value to mhi_poll_reg_field() to wait enough for
device ready as part of power up sequence.
Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1699344890-87076-2-git-send-email-quic_qianyu@quicinc.com
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/bus/mhi/host/init.c | 1 +
drivers/bus/mhi/host/internal.h | 2 +-
drivers/bus/mhi/host/main.c | 5 +++--
drivers/bus/mhi/host/pm.c | 24 +++++++++++++++++-------
include/linux/mhi.h | 4 ++++
5 files changed, 26 insertions(+), 10 deletions(-)
--- a/drivers/bus/mhi/host/init.c
+++ b/drivers/bus/mhi/host/init.c
@@ -881,6 +881,7 @@ static int parse_config(struct mhi_contr
if (!mhi_cntrl->timeout_ms)
mhi_cntrl->timeout_ms = MHI_TIMEOUT_MS;
+ mhi_cntrl->ready_timeout_ms = config->ready_timeout_ms;
mhi_cntrl->bounce_buf = config->use_bounce_buf;
mhi_cntrl->buffer_len = config->buf_len;
if (!mhi_cntrl->buffer_len)
--- a/drivers/bus/mhi/host/internal.h
+++ b/drivers/bus/mhi/host/internal.h
@@ -321,7 +321,7 @@ int __must_check mhi_read_reg_field(stru
u32 *out);
int __must_check mhi_poll_reg_field(struct mhi_controller *mhi_cntrl,
void __iomem *base, u32 offset, u32 mask,
- u32 val, u32 delayus);
+ u32 val, u32 delayus, u32 timeout_ms);
void mhi_write_reg(struct mhi_controller *mhi_cntrl, void __iomem *base,
u32 offset, u32 val);
int __must_check mhi_write_reg_field(struct mhi_controller *mhi_cntrl,
--- a/drivers/bus/mhi/host/main.c
+++ b/drivers/bus/mhi/host/main.c
@@ -40,10 +40,11 @@ int __must_check mhi_read_reg_field(stru
int __must_check mhi_poll_reg_field(struct mhi_controller *mhi_cntrl,
void __iomem *base, u32 offset,
- u32 mask, u32 val, u32 delayus)
+ u32 mask, u32 val, u32 delayus,
+ u32 timeout_ms)
{
int ret;
- u32 out, retry = (mhi_cntrl->timeout_ms * 1000) / delayus;
+ u32 out, retry = (timeout_ms * 1000) / delayus;
while (retry--) {
ret = mhi_read_reg_field(mhi_cntrl, base, offset, mask, &out);
--- a/drivers/bus/mhi/host/pm.c
+++ b/drivers/bus/mhi/host/pm.c
@@ -163,6 +163,7 @@ int mhi_ready_state_transition(struct mh
enum mhi_pm_state cur_state;
struct device *dev = &mhi_cntrl->mhi_dev->dev;
u32 interval_us = 25000; /* poll register field every 25 milliseconds */
+ u32 timeout_ms;
int ret, i;
/* Check if device entered error state */
@@ -173,14 +174,18 @@ int mhi_ready_state_transition(struct mh
/* Wait for RESET to be cleared and READY bit to be set by the device */
ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL,
- MHICTRL_RESET_MASK, 0, interval_us);
+ MHICTRL_RESET_MASK, 0, interval_us,
+ mhi_cntrl->timeout_ms);
if (ret) {
dev_err(dev, "Device failed to clear MHI Reset\n");
return ret;
}
+ timeout_ms = mhi_cntrl->ready_timeout_ms ?
+ mhi_cntrl->ready_timeout_ms : mhi_cntrl->timeout_ms;
ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHISTATUS,
- MHISTATUS_READY_MASK, 1, interval_us);
+ MHISTATUS_READY_MASK, 1, interval_us,
+ timeout_ms);
if (ret) {
dev_err(dev, "Device failed to enter MHI Ready\n");
return ret;
@@ -479,7 +484,7 @@ static void mhi_pm_disable_transition(st
/* Wait for the reset bit to be cleared by the device */
ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL,
- MHICTRL_RESET_MASK, 0, 25000);
+ MHICTRL_RESET_MASK, 0, 25000, mhi_cntrl->timeout_ms);
if (ret)
dev_err(dev, "Device failed to clear MHI Reset\n");
@@ -492,8 +497,8 @@ static void mhi_pm_disable_transition(st
if (!MHI_IN_PBL(mhi_get_exec_env(mhi_cntrl))) {
/* wait for ready to be set */
ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs,
- MHISTATUS,
- MHISTATUS_READY_MASK, 1, 25000);
+ MHISTATUS, MHISTATUS_READY_MASK,
+ 1, 25000, mhi_cntrl->timeout_ms);
if (ret)
dev_err(dev, "Device failed to enter READY state\n");
}
@@ -1111,7 +1116,8 @@ int mhi_async_power_up(struct mhi_contro
if (state == MHI_STATE_SYS_ERR) {
mhi_set_mhi_state(mhi_cntrl, MHI_STATE_RESET);
ret = mhi_poll_reg_field(mhi_cntrl, mhi_cntrl->regs, MHICTRL,
- MHICTRL_RESET_MASK, 0, interval_us);
+ MHICTRL_RESET_MASK, 0, interval_us,
+ mhi_cntrl->timeout_ms);
if (ret) {
dev_info(dev, "Failed to reset MHI due to syserr state\n");
goto error_exit;
@@ -1202,14 +1208,18 @@ EXPORT_SYMBOL_GPL(mhi_power_down);
int mhi_sync_power_up(struct mhi_controller *mhi_cntrl)
{
int ret = mhi_async_power_up(mhi_cntrl);
+ u32 timeout_ms;
if (ret)
return ret;
+ /* Some devices need more time to set ready during power up */
+ timeout_ms = mhi_cntrl->ready_timeout_ms ?
+ mhi_cntrl->ready_timeout_ms : mhi_cntrl->timeout_ms;
wait_event_timeout(mhi_cntrl->state_event,
MHI_IN_MISSION_MODE(mhi_cntrl->ee) ||
MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state),
- msecs_to_jiffies(mhi_cntrl->timeout_ms));
+ msecs_to_jiffies(timeout_ms));
ret = (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -ETIMEDOUT;
if (ret)
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -266,6 +266,7 @@ struct mhi_event_config {
* struct mhi_controller_config - Root MHI controller configuration
* @max_channels: Maximum number of channels supported
* @timeout_ms: Timeout value for operations. 0 means use default
+ * @ready_timeout_ms: Timeout value for waiting device to be ready (optional)
* @buf_len: Size of automatically allocated buffers. 0 means use default
* @num_channels: Number of channels defined in @ch_cfg
* @ch_cfg: Array of defined channels
@@ -277,6 +278,7 @@ struct mhi_event_config {
struct mhi_controller_config {
u32 max_channels;
u32 timeout_ms;
+ u32 ready_timeout_ms;
u32 buf_len;
u32 num_channels;
const struct mhi_channel_config *ch_cfg;
@@ -330,6 +332,7 @@ struct mhi_controller_config {
* @pm_mutex: Mutex for suspend/resume operation
* @pm_lock: Lock for protecting MHI power management state
* @timeout_ms: Timeout in ms for state transitions
+ * @ready_timeout_ms: Timeout in ms for waiting device to be ready (optional)
* @pm_state: MHI power management state
* @db_access: DB access states
* @ee: MHI device execution environment
@@ -419,6 +422,7 @@ struct mhi_controller {
struct mutex pm_mutex;
rwlock_t pm_lock;
u32 timeout_ms;
+ u32 ready_timeout_ms;
u32 pm_state;
u32 db_access;
enum mhi_ee_type ee;

62
target/linux/generic/backport-6.6/851-v6.8-bus-mhi-host-pci_generic-Add-SDX75-based-modem-suppo.patch Normal file
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@ -0,0 +1,62 @@
From 4dc9c850a974ba7db2091ce73bcffe631aafe144 Mon Sep 17 00:00:00 2001
From: Qiang Yu <quic_qianyu@quicinc.com>
Date: Tue, 7 Nov 2023 16:14:50 +0800
Subject: [PATCH 1/2] bus: mhi: host: pci_generic: Add SDX75 based modem
support
Add generic info for SDX75 based modems. SDX75 takes longer to set ready
during power up. Hence use separate configuration.
Signed-off-by: Qiang Yu <quic_qianyu@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1699344890-87076-3-git-send-email-quic_qianyu@quicinc.com
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/bus/mhi/host/pci_generic.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -269,6 +269,16 @@ static struct mhi_event_config modem_qco
MHI_EVENT_CONFIG_HW_DATA(5, 2048, 101)
};
+static const struct mhi_controller_config modem_qcom_v2_mhiv_config = {
+ .max_channels = 128,
+ .timeout_ms = 8000,
+ .ready_timeout_ms = 50000,
+ .num_channels = ARRAY_SIZE(modem_qcom_v1_mhi_channels),
+ .ch_cfg = modem_qcom_v1_mhi_channels,
+ .num_events = ARRAY_SIZE(modem_qcom_v1_mhi_events),
+ .event_cfg = modem_qcom_v1_mhi_events,
+};
+
static const struct mhi_controller_config modem_qcom_v1_mhiv_config = {
.max_channels = 128,
.timeout_ms = 8000,
@@ -278,6 +288,16 @@ static const struct mhi_controller_confi
.event_cfg = modem_qcom_v1_mhi_events,
};
+static const struct mhi_pci_dev_info mhi_qcom_sdx75_info = {
+ .name = "qcom-sdx75m",
+ .fw = "qcom/sdx75m/xbl.elf",
+ .edl = "qcom/sdx75m/edl.mbn",
+ .config = &modem_qcom_v2_mhiv_config,
+ .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
+ .dma_data_width = 32,
+ .sideband_wake = false,
+};
+
static const struct mhi_pci_dev_info mhi_qcom_sdx65_info = {
.name = "qcom-sdx65m",
.fw = "qcom/sdx65m/xbl.elf",
@@ -600,6 +620,8 @@ static const struct pci_device_id mhi_pc
.driver_data = (kernel_ulong_t) &mhi_telit_fn990_info },
{ PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0308),
.driver_data = (kernel_ulong_t) &mhi_qcom_sdx65_info },
+ { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0309),
+ .driver_data = (kernel_ulong_t) &mhi_qcom_sdx75_info },
{ PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1001), /* EM120R-GL (sdx24) */
.driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
{ PCI_DEVICE(PCI_VENDOR_ID_QUECTEL, 0x1002), /* EM160R-GL (sdx24) */

28
target/linux/generic/backport-6.6/852-stable-bus-mhi-host-pci_generic-constify-modem_telit_fn980_.patch Normal file
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@ -0,0 +1,28 @@
From 2f5e59d70566902d7b4e13c6af3f042f5d28b78b Mon Sep 17 00:00:00 2001
From: Jeff Johnson <quic_jjohnson@quicinc.com>
Date: Thu, 22 Feb 2024 18:00:23 -0800
Subject: [PATCH 2/2] bus: mhi: host: pci_generic: constify
modem_telit_fn980_hw_v1_config
MHI expects the controller configs to be const, and all of the other ones
in this file already are, so constify modem_telit_fn980_hw_v1_config.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20240222-mhi-const-bus-mhi-host-pci_generic-v1-1-d4c9b0b0a7a5@quicinc.com
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/bus/mhi/host/pci_generic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -538,7 +538,7 @@ static struct mhi_event_config mhi_telit
MHI_EVENT_CONFIG_HW_DATA(2, 2048, 101)
};
-static struct mhi_controller_config modem_telit_fn980_hw_v1_config = {
+static const struct mhi_controller_config modem_telit_fn980_hw_v1_config = {
.max_channels = 128,
.timeout_ms = 20000,
.num_channels = ARRAY_SIZE(mhi_telit_fn980_hw_v1_channels),

2
target/linux/generic/pending-6.6/790-bus-mhi-core-add-SBL-state-callback.patch
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@ -20,7 +20,7 @@ Signed-off-by: Robert Marko <robimarko@gmail.com>
--- a/drivers/bus/mhi/host/main.c
+++ b/drivers/bus/mhi/host/main.c
@@ -905,6 +905,7 @@ int mhi_process_ctrl_ev_ring(struct mhi_
@@ -906,6 +906,7 @@ int mhi_process_ctrl_ev_ring(struct mhi_
switch (event) {
case MHI_EE_SBL:
st = DEV_ST_TRANSITION_SBL;