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muc_uart: add attr for muc fw vers

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Record the muc fw vers when it is sent from the muc
and provide access to it from an attribute.

Change-Id: Ibbee1cf8c7c6ef7a6d936e8d08ff198d0d963d75
Signed-off-by: Ryan Lattrel <ryanl@motorola.com>
Reviewed-on: https://gerrit.mot.com/1303136
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Kenneth Kessler <kennykessler@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Ryan Lattrel 2019-01-30 09:53:36 -06:00
commit 6595eeab48
1 changed files with 24 additions and 0 deletions
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24
drivers/mmi_muc_uart/muc_uart.c
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@ -85,6 +85,9 @@ void *muc_ipc_log;
/* How many times to try to send a message before giving up */
#define MUC_UART_RETRY_COUNT 100
/* Max number of chars we will copy from the fw vers sent by the muc */
#define MUC_FW_VERS_MAX_SIZE 32
struct write_data {
struct list_head list;
uint16_t cmd;
@ -138,6 +141,7 @@ struct mod_muc_data_t {
struct power_supply *dc_psy;
atomic_t sleep_req_pending;
struct notifier_block ps_nb;
char muc_fw_vers[MUC_FW_VERS_MAX_SIZE];
};
/* How long until we move on without an ack */
@ -218,11 +222,26 @@ static ssize_t mod_attached_show(struct device *dev,
return snprintf(buf, 4, "%u\n", gpio_state);
}
static ssize_t muc_fw_vers_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct platform_device *pdev = to_platform_device(dev);
struct mod_muc_data_t *mm_data = platform_get_drvdata(pdev);
if (mm_data && mm_data->muc_fw_vers[0] != '\0')
return snprintf(buf, strlen(mm_data->muc_fw_vers) + 1,
"%s", mm_data->muc_fw_vers);
return 0;
}
/* /sys/devices/soc:mod_uart/mod_attached */
DEVICE_ATTR_RO(mod_attached);
DEVICE_ATTR_RO(muc_fw_vers);
static struct attribute *muc_uart_attrs[] = {
&dev_attr_mod_attached.attr,
&dev_attr_muc_fw_vers.attr,
NULL
};
@ -1138,6 +1157,11 @@ static void muc_uart_handle_message(struct mod_muc_data_t *mm_data,
MUC_LOG("muc_fw_ver: %.*s\n",
(int)payload_len,
(char *)payload);
memset(mm_data->muc_fw_vers, 0, MUC_FW_VERS_MAX_SIZE);
/* Last value of muc_fw_vers should be null char */
memcpy(mm_data->muc_fw_vers, payload,
payload_len < (MUC_FW_VERS_MAX_SIZE - 1) ?
payload_len : (MUC_FW_VERS_MAX_SIZE - 1));
} else
muc_uart_send(mm_data, MUC_FW_VERSION|MSG_NACK_MASK, NULL, 0);
break;