diff options
Diffstat (limited to 'include/linux/mtd/sh_flctl.h')
| -rw-r--r-- | include/linux/mtd/sh_flctl.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/linux/mtd/sh_flctl.h b/include/linux/mtd/sh_flctl.h index 9cf4c4c7955..a38e1fa8af0 100644 --- a/include/linux/mtd/sh_flctl.h +++ b/include/linux/mtd/sh_flctl.h @@ -23,6 +23,7 @@ #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> #include <linux/mtd/partitions.h> +#include <linux/pm_qos.h> /* FLCTL registers */ #define FLCMNCR(f) (f->reg + 0x0) @@ -38,6 +39,7 @@ #define FLDTFIFO(f) (f->reg + 0x24) #define FLECFIFO(f) (f->reg + 0x28) #define FLTRCR(f) (f->reg + 0x2C) +#define FLHOLDCR(f) (f->reg + 0x38) #define FL4ECCRESULT0(f) (f->reg + 0x80) #define FL4ECCRESULT1(f) (f->reg + 0x84) #define FL4ECCRESULT2(f) (f->reg + 0x88) @@ -67,6 +69,30 @@ #define CE0_ENABLE (0x1 << 3) /* Chip Enable 0 */ #define TYPESEL_SET (0x1 << 0) +/* + * Clock settings using the PULSEx registers from FLCMNCR + * + * Some hardware uses bits called PULSEx instead of FCKSEL_E and QTSEL_E + * to control the clock divider used between the High-Speed Peripheral Clock + * and the FLCTL internal clock. If so, use CLK_8_BIT_xxx for connecting 8 bit + * and CLK_16_BIT_xxx for connecting 16 bit bus bandwith NAND chips. For the 16 + * bit version the divider is seperate for the pulse width of high and low + * signals. + */ +#define PULSE3 (0x1 << 27) +#define PULSE2 (0x1 << 17) +#define PULSE1 (0x1 << 15) +#define PULSE0 (0x1 << 9) +#define CLK_8B_0_5 PULSE1 +#define CLK_8B_1 0x0 +#define CLK_8B_1_5 (PULSE1 | PULSE2) +#define CLK_8B_2 PULSE0 +#define CLK_8B_3 (PULSE0 | PULSE1 | PULSE2) +#define CLK_8B_4 (PULSE0 | PULSE2) +#define CLK_16B_6L_2H PULSE0 +#define CLK_16B_9L_3H (PULSE0 | PULSE1 | PULSE2) +#define CLK_16B_12L_4H (PULSE0 | PULSE2) + /* FLCMDCR control bits */ #define ADRCNT2_E (0x1 << 31) /* 5byte address enable */ #define ADRMD_E (0x1 << 26) /* Sector address access */ @@ -85,6 +111,15 @@ #define TRSTRT (0x1 << 0) /* translation start */ #define TREND (0x1 << 1) /* translation end */ +/* + * FLHOLDCR control bits + * + * HOLDEN: Bus Occupancy Enable (inverted) + * Enable this bit when the external bus might be used in between transfers. + * If not set and the bus gets used by other modules, a deadlock occurs. + */ +#define HOLDEN (0x1 << 0) + /* FL4ECCCR control bits */ #define _4ECCFA (0x1 << 2) /* 4 symbols correct fault */ #define _4ECCEND (0x1 << 1) /* 4 symbols end */ @@ -97,6 +132,7 @@ struct sh_flctl { struct mtd_info mtd; struct nand_chip chip; struct platform_device *pdev; + struct dev_pm_qos_request pm_qos; void __iomem *reg; uint8_t done_buff[2048 + 64]; /* max size 2048 + 64 */ @@ -108,11 +144,14 @@ struct sh_flctl { int erase1_page_addr; /* page_addr in ERASE1 cmd */ uint32_t erase_ADRCNT; /* bits of FLCMDCR in ERASE1 cmd */ uint32_t rw_ADRCNT; /* bits of FLCMDCR in READ WRITE cmd */ + uint32_t flcmncr_base; /* base value of FLCMNCR */ int hwecc_cant_correct[4]; unsigned page_size:1; /* NAND page size (0 = 512, 1 = 2048) */ unsigned hwecc:1; /* Hardware ECC (0 = disabled, 1 = enabled) */ + unsigned holden:1; /* Hardware has FLHOLDCR and HOLDEN is set */ + unsigned qos_request:1; /* QoS request to prevent deep power shutdown */ }; struct sh_flctl_platform_data { @@ -121,6 +160,7 @@ struct sh_flctl_platform_data { unsigned long flcmncr_val; unsigned has_hwecc:1; + unsigned use_holden:1; }; static inline struct sh_flctl *mtd_to_flctl(struct mtd_info *mtdinfo) |