Commit 1cc3f141 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Mark Brown
Browse files

spi: dw: introduce spi_shutdown_chip() 



This helper disables SPI controller and sets clock to 0.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d53c0ef3

drivers/spi/spi-dw.c

+6 −7
Original line number Diff line number Diff line
@@ -546,22 +546,21 @@ 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);

drivers/spi/spi-dw.h

+6 −0
Original line number Diff line number Diff line
@@ -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),