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[v1,08/10] spi: dw: introduce spi_shutdown_chip()

Message ID 1444853545-59868-9-git-send-email-andriy.shevchenko@linux.intel.com (mailing list archive)
State Accepted
Commit 1cc3f141f0cb5a822cdef30fb1d92ae6f4176bfa
Headers show

Commit Message

Andy Shevchenko Oct. 14, 2015, 8:12 p.m. UTC 
This helper disables SPI controller and sets clock to 0.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/spi/spi-dw.c | 13 ++++++-------
 drivers/spi/spi-dw.h |  6 ++++++
 2 files changed, 12 insertions(+), 7 deletions(-)
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Patch

diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index a2ee776..047ffbd 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -548,22 +548,21 @@  void dw_spi_remove_host(struct dw_spi *dws)
 
 	if (dws->dma_ops && dws->dma_ops->dma_exit)
 		dws->dma_ops->dma_exit(dws);
-	spi_enable_chip(dws, 0);
-	/* Disable clk */
-	spi_set_clk(dws, 0);
+
+	spi_shutdown_chip(dws);
 }
 EXPORT_SYMBOL_GPL(dw_spi_remove_host);
 
 int dw_spi_suspend_host(struct dw_spi *dws)
 {
-	int ret = 0;
+	int ret;
 
 	ret = spi_master_suspend(dws->master);
 	if (ret)
 		return ret;
-	spi_enable_chip(dws, 0);
-	spi_set_clk(dws, 0);
-	return ret;
+
+	spi_shutdown_chip(dws);
+	return 0;
 }
 EXPORT_SYMBOL_GPL(dw_spi_suspend_host);
 
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
index b75ed32..35589a2 100644
--- a/drivers/spi/spi-dw.h
+++ b/drivers/spi/spi-dw.h
@@ -225,6 +225,12 @@  static inline void spi_reset_chip(struct dw_spi *dws)
 	spi_enable_chip(dws, 1);
 }
 
+static inline void spi_shutdown_chip(struct dw_spi *dws)
+{
+	spi_enable_chip(dws, 0);
+	spi_set_clk(dws, 0);
+}
+
 /*
  * Each SPI slave device to work with dw_api controller should
  * has such a structure claiming its working mode (poll or PIO/DMA),