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mtd: onenand: omap2: Configure driver from DT

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Move away from platform data configuration and use pure DT approach.

Use generic probe function to deal with OneNAND node and remove now useless
gpmc_probe_onenand_child function. Import sync mode timing calculation
function from mach-omap2/gpmc-onenand.c

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Ladislav Michl
2018-01-12 14:17:25 +01:00
committed by Boris Brezillon
parent bdaca9345d
commit a758f50f10
4 changed files with 300 additions and 138 deletions
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28
include/linux/omap-gpmc.h
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@@ -25,15 +25,43 @@ struct gpmc_nand_ops {
struct gpmc_nand_regs;
struct gpmc_onenand_info {
bool sync_read;
bool sync_write;
int burst_len;
};
#if IS_ENABLED(CONFIG_OMAP_GPMC)
struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,
int cs);
/**
* gpmc_omap_onenand_set_timings - set optimized sync timings.
* @cs: Chip Select Region
* @freq: Chip frequency
* @latency: Burst latency cycle count
* @info: Structure describing parameters used
*
* Sets optimized timings for the @cs region based on @freq and @latency.
* Updates the @info structure based on the GPMC settings.
*/
int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq,
int latency,
struct gpmc_onenand_info *info);
#else
static inline struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *regs,
int cs)
{
return NULL;
}
static inline
int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq,
int latency,
struct gpmc_onenand_info *info)
{
return -EINVAL;
}
#endif /* CONFIG_OMAP_GPMC */
extern int gpmc_calc_timings(struct gpmc_timings *gpmc_t,