diff options
| author | Ladislav Michl <ladis@linux-mips.org> | 2018-01-12 16:17:25 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@free-electrons.com> | 2018-01-12 18:41:15 +0300 |
| commit | a758f50f10cfcf863f95372ff52e0d8d22fda9ba (patch) | |
| tree | 294a2badeec6d690b68db82d8dbd29637c6edec7 /include/linux/omap-gpmc.h | |
| parent | bdaca9345d41fd9420995469d27603ea62054691 (diff) | |
| download | linux-a758f50f10cfcf863f95372ff52e0d8d22fda9ba.tar.xz | |
mtd: onenand: omap2: Configure driver from DT
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>
Diffstat (limited to 'include/linux/omap-gpmc.h')
| -rw-r--r-- | include/linux/omap-gpmc.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/omap-gpmc.h b/include/linux/omap-gpmc.h index edfa280c3d56..053feb41510a 100644 --- a/include/linux/omap-gpmc.h +++ b/include/linux/omap-gpmc.h @@ -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, |