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This patch marks some attributes as 'const' which are set only once and never be modified by the driver. There are some changes in parameter list and variable declarations too which mark them as 'const'. Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
#ifndef __ASM_ARCH_PXA3XX_NAND_H
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#define __ASM_ARCH_PXA3XX_NAND_H
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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struct pxa3xx_nand_timing {
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unsigned int tCH; /* Enable signal hold time */
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unsigned int tCS; /* Enable signal setup time */
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unsigned int tWH; /* ND_nWE high duration */
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unsigned int tWP; /* ND_nWE pulse time */
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unsigned int tRH; /* ND_nRE high duration */
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unsigned int tRP; /* ND_nRE pulse width */
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unsigned int tR; /* ND_nWE high to ND_nRE low for read */
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unsigned int tWHR; /* ND_nWE high to ND_nRE low for status read */
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unsigned int tAR; /* ND_ALE low to ND_nRE low delay */
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};
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struct pxa3xx_nand_cmdset {
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uint16_t read1;
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uint16_t read2;
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uint16_t program;
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uint16_t read_status;
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uint16_t read_id;
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uint16_t erase;
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uint16_t reset;
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uint16_t lock;
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uint16_t unlock;
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uint16_t lock_status;
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};
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struct pxa3xx_nand_flash {
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const struct pxa3xx_nand_timing *timing; /* NAND Flash timing */
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const struct pxa3xx_nand_cmdset *cmdset;
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uint32_t page_per_block;/* Pages per block (PG_PER_BLK) */
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uint32_t page_size; /* Page size in bytes (PAGE_SZ) */
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uint32_t flash_width; /* Width of Flash memory (DWIDTH_M) */
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uint32_t dfc_width; /* Width of flash controller(DWIDTH_C) */
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uint32_t num_blocks; /* Number of physical blocks in Flash */
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uint32_t chip_id;
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/* NOTE: these are automatically calculated, do not define */
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size_t oob_size;
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size_t read_id_bytes;
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unsigned int col_addr_cycles;
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unsigned int row_addr_cycles;
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};
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struct pxa3xx_nand_platform_data {
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/* the data flash bus is shared between the Static Memory
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* Controller and the Data Flash Controller, the arbiter
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* controls the ownership of the bus
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*/
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int enable_arbiter;
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const struct mtd_partition *parts;
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unsigned int nr_parts;
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struct pxa3xx_nand_flash * const flash;
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size_t num_flash;
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};
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extern void pxa3xx_set_nand_info(struct pxa3xx_nand_platform_data *info);
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#endif /* __ASM_ARCH_PXA3XX_NAND_H */
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