evie/android_kernel_oneplus_msm8998
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ASoC: wcd-spi: add support to read requested section of memory

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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>
This commit is contained in:
Bhalchandra Gajare 2016-09-21 14:42:23 -07:00 • committed by Gerrit - the friendly Code Review server
parent aaa95b0cb5
commit 4e3222f33a
1 changed files with 26 additions and 0 deletions
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26
sound/soc/codecs/wcd-spi.c
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@ -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);