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Commit 4e3222f3 authored by Bhalchandra Gajare's avatar Bhalchandra Gajare Committed by Gerrit - the friendly Code Review server
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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: default avatarBhalchandra Gajare <gajare@codeaurora.org>
parent aaa95b0c

sound/soc/codecs/wcd-spi.c

+26 −0
Original line number Diff line number Diff line
@@ -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);