From 1cc3f141f0cb5a822cdef30fb1d92ae6f4176bfa Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 14 Oct 2015 23:12:23 +0300 Subject: [PATCH] spi: dw: introduce spi_shutdown_chip() This helper disables SPI controller and sets clock to 0. Signed-off-by: Andy Shevchenko Signed-off-by: Mark Brown --- drivers/spi/spi-dw.c | 13 ++++++------- drivers/spi/spi-dw.h | 6 ++++++ 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index c8e7715097e7..a730c353d3bf 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -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); diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index b75ed327d5a2..35589a270468 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), -- 2.20.1