diff options
| author | Bhalchandra Gajare <gajare@codeaurora.org> | 2016-09-21 14:42:23 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-10-04 11:06:59 -0700 |
| commit | 4e3222f33acdf6dd22237f56cb90bd202f66bea6 (patch) | |
| tree | 2e01e6b418c4a03dcf123767f7947ff2931ef40f | |
| parent | aaa95b0cb5fe4609ac98b1bfc9ae398946f2d40c (diff) | |
ASoC: wcd-spi: add support to read requested section of memory
It is possible that the manager driver may try to read codec memory
section through the wcd-spi driver. Add support in the wcd-spi driver
to handle the WDSP_EVENT_READ_SECTION event and perform reading of
the requested memory section.
Change-Id: If7fb228dc15cb47079c8a791443c4d12c29eeb9c
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
| -rw-r--r-- | sound/soc/codecs/wcd-spi.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/sound/soc/codecs/wcd-spi.c b/sound/soc/codecs/wcd-spi.c index 3049d87c6c05..ecc395bb810e 100644 --- a/sound/soc/codecs/wcd-spi.c +++ b/sound/soc/codecs/wcd-spi.c @@ -813,6 +813,27 @@ static int wdsp_spi_dload_section(struct spi_device *spi, return ret; } +static int wdsp_spi_read_section(struct spi_device *spi, void *data) +{ + struct wcd_spi_priv *wcd_spi = spi_get_drvdata(spi); + struct wdsp_img_section *sec = data; + struct wcd_spi_msg msg; + int ret; + + msg.remote_addr = sec->addr + wcd_spi->mem_base_addr; + msg.data = sec->data; + msg.len = sec->size; + + dev_dbg(&spi->dev, "%s: addr = 0x%x, size = 0x%zx\n", + __func__, msg.remote_addr, msg.len); + + ret = wcd_spi_data_xfer(spi, &msg, WCD_SPI_XFER_READ); + if (IS_ERR_VALUE(ret)) + dev_err(&spi->dev, "%s: fail addr (0x%x) size (0x%zx)\n", + __func__, msg.remote_addr, msg.len); + return ret; +} + static int wdsp_spi_event_handler(struct device *dev, void *priv_data, enum wdsp_event_type event, void *data) @@ -846,6 +867,11 @@ static int wdsp_spi_event_handler(struct device *dev, void *priv_data, case WDSP_EVENT_DLOAD_SECTION: ret = wdsp_spi_dload_section(spi, data); break; + + case WDSP_EVENT_READ_SECTION: + ret = wdsp_spi_read_section(spi, data); + break; + default: dev_dbg(&spi->dev, "%s: Unhandled event %d\n", __func__, event); |