diff options
Diffstat (limited to 'drivers/modem/m6718_spi/protocol.c')
| -rw-r--r-- | drivers/modem/m6718_spi/protocol.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/modem/m6718_spi/protocol.c b/drivers/modem/m6718_spi/protocol.c index aa21d4dbcde..fa6b2528dd4 100644 --- a/drivers/modem/m6718_spi/protocol.c +++ b/drivers/modem/m6718_spi/protocol.c @@ -196,6 +196,71 @@ bool modem_protocol_is_busy(struct spi_device *sdev) return false; } +int modem_protocol_suspend(struct spi_device *sdev) +{ + struct modem_m6718_spi_link_platform_data *link = + sdev->dev.platform_data; + struct ipc_link_context *context; + int link_id; + + if (link == NULL) { + /* platform data missing in board config? */ + dev_err(&sdev->dev, "error: no platform data for link!\n"); + return -ENODEV; + } + + link_id = link->id; + context = &l1_context.device_context[link_id]; + + if (link_id >= IPC_NBR_SUPPORTED_SPI_LINKS) { + dev_err(&sdev->dev, + "link %d error: too many links! (max %d)\n", + link->id, IPC_NBR_SUPPORTED_SPI_LINKS); + return -ENODEV; + } + + ipc_util_suspend_link(context); + return 0; +} + +int modem_protocol_resume(struct spi_device *sdev) +{ + struct modem_m6718_spi_link_platform_data *link = + sdev->dev.platform_data; + struct ipc_link_context *context; + int link_id; + + if (link == NULL) { + /* platform data missing in board config? */ + dev_err(&sdev->dev, "error: no platform data for link!\n"); + return -ENODEV; + } + + link_id = link->id; + context = &l1_context.device_context[link_id]; + + if (link_id >= IPC_NBR_SUPPORTED_SPI_LINKS) { + dev_err(&sdev->dev, + "link %d error: too many links! (max %d)\n", + link->id, IPC_NBR_SUPPORTED_SPI_LINKS); + return -ENODEV; + } + + ipc_util_resume_link(context); + + /* + * If the resume event was an interrupt from the slave then the event + * is pending and we need to service it now. + */ + if (ipc_util_int_is_active(context)) { + dev_dbg(&sdev->dev, + "link %d: slave-ready is pending after resume\n", + link_id); + ipc_sm_kick(IPC_SM_RUN_SLAVE_IRQ, context); + } + return 0; +} + static void spi_tfr_complete(void *context) { ipc_sm_kick(IPC_SM_RUN_TFR_COMPLETE, @@ -306,6 +371,7 @@ int modem_protocol_probe(struct spi_device *sdev) /* init link context */ context->link = link; context->sdev = sdev; + ipc_util_resume_link(context); atomic_set(&context->gpio_configured, 0); atomic_set(&context->state_int, ipc_util_int_level_inactive(context)); |