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spi: dw: use managed resources

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Migrate mmio code and core driver to managed resources to reduce boilerplate
error handling code. Also, handle clk_enable() failure while at it, and drop
unused dw_spi iolen field.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Baruch Siach
2013-12-30 20:30:44 +02:00
committed by Mark Brown
parent 0a47d3c404
commit 04f421e7b0
4 changed files with 37 additions and 97 deletions
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4
drivers/spi/spi-dw.h
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@@ -92,13 +92,11 @@ struct dw_spi_dma_ops {
struct dw_spi {
struct spi_master *master;
struct spi_device *cur_dev;
struct device *parent_dev;
enum dw_ssi_type type;
char name[16];
void __iomem *regs;
unsigned long paddr;
u32 iolen;
int irq;
u32 fifo_len; /* depth of the FIFO buffer */
u32 max_freq; /* max bus freq supported */
@@ -230,7 +228,7 @@ struct dw_spi_chip {
void (*cs_control)(u32 command);
};
extern int dw_spi_add_host(struct dw_spi *dws);
extern int dw_spi_add_host(struct device *dev, struct dw_spi *dws);
extern void dw_spi_remove_host(struct dw_spi *dws);
extern int dw_spi_suspend_host(struct dw_spi *dws);
extern int dw_spi_resume_host(struct dw_spi *dws);