From df8e78607d4795806b59564ba7a3e2e125d119fc Mon Sep 17 00:00:00 2001 From: Bastien Curutchet Date: Wed, 4 Dec 2024 10:43:16 +0100 Subject: memory: ti-aemif: Export aemif_*_cs_timings() Export the aemif_set_cs_timing() and aemif_check_cs_timing() symbols so they can be used by other drivers Add a mutex to protect the CS configuration register from concurrent accesses between the AEMIF and its 'children'. Signed-off-by: Bastien Curutchet Reviewed-by: Miquel Raynal Link: https://lore.kernel.org/r/20241204094319.1050826-7-bastien.curutchet@bootlin.com [krzysztof: wrap aemif_set_cs_timings() at 80-char] Signed-off-by: Krzysztof Kozlowski --- include/linux/memory/ti-aemif.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 include/linux/memory/ti-aemif.h (limited to 'include/linux') diff --git a/include/linux/memory/ti-aemif.h b/include/linux/memory/ti-aemif.h new file mode 100644 index 000000000000..da94a9d985e7 --- /dev/null +++ b/include/linux/memory/ti-aemif.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __MEMORY_TI_AEMIF_H +#define __MEMORY_TI_AEMIF_H + +/** + * struct aemif_cs_timings: structure to hold CS timing configuration + * values are expressed in number of clock cycles - 1 + * @ta: minimum turn around time + * @rhold: read hold width + * @rstrobe: read strobe width + * @rsetup: read setup width + * @whold: write hold width + * @wstrobe: write strobe width + * @wsetup: write setup width + */ +struct aemif_cs_timings { + u32 ta; + u32 rhold; + u32 rstrobe; + u32 rsetup; + u32 whold; + u32 wstrobe; + u32 wsetup; +}; + +struct aemif_device; + +int aemif_set_cs_timings(struct aemif_device *aemif, u8 cs, struct aemif_cs_timings *timings); +int aemif_check_cs_timings(struct aemif_cs_timings *timings); + +#endif // __MEMORY_TI_AEMIF_H -- cgit v1.2.3