#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/param.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/spear_smi.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/of.h>
#include <linux/of_address.h>

Data Structures
struct	flash_device

struct	spear_smi

struct	spear_snor_flash

Macros
#define	SMI_MAX_CLOCK_FREQ 50000000 /* 50 MHz */

#define	SMI_PROBE_TIMEOUT (HZ / 10)

#define	SMI_MAX_TIME_OUT (3 * HZ)

#define	SMI_CMD_TIMEOUT (HZ / 10)

#define	SMI_CR1 0x0 /* SMI control register 1 */

#define	SMI_CR2 0x4 /* SMI control register 2 */

#define	SMI_SR 0x8 /* SMI status register */

#define	SMI_TR 0xC /* SMI transmit register */

#define	SMI_RR 0x10 /* SMI receive register */

#define	BANK_EN (0xF << 0) /* enables all banks */

#define	DSEL_TIME (0x6 << 4) /* Deselect time 6 + 1 SMI_CK periods */

#define	SW_MODE (0x1 << 28) /* enables SW Mode */

#define	WB_MODE (0x1 << 29) /* Write Burst Mode */

#define	FAST_MODE (0x1 << 15) /* Fast Mode */

#define	HOLD1 (0x1 << 16) /* Clock Hold period selection */

#define	SEND (0x1 << 7) /* Send data */

#define	TFIE (0x1 << 8) /* Transmission Flag Interrupt Enable */

#define	WCIE (0x1 << 9) /* Write Complete Interrupt Enable */

#define	RD_STATUS_REG (0x1 << 10) /* reads status reg */

#define	WE (0x1 << 11) /* Write Enable */

#define	TX_LEN_SHIFT 0

#define	RX_LEN_SHIFT 4

#define	BANK_SHIFT 12

#define	SR_WIP 0x1 /* Write in progress */

#define	SR_WEL 0x2 /* Write enable latch */

#define	SR_BP0 0x4 /* Block protect 0 */

#define	SR_BP1 0x8 /* Block protect 1 */

#define	SR_BP2 0x10 /* Block protect 2 */

#define	SR_SRWD 0x80 /* SR write protect */

#define	TFF 0x100 /* Transfer Finished Flag */

#define	WCF 0x200 /* Transfer Finished Flag */

#define	ERF1 0x400 /* Forbidden Write Request */

#define	ERF2 0x800 /* Forbidden Access */

#define	WM_SHIFT 12

#define	OPCODE_RDID 0x9f /* Read JEDEC ID */

#define	FLASH_ID(n, es, id, psize, ssize, size)

Functions
	module_init (spear_smi_init)

	module_exit (spear_smi_exit)

	MODULE_LICENSE ("GPL")

	MODULE_AUTHOR ("Ashish Priyadarshi, Shiraz Hashim <[email protected]>")

	MODULE_DESCRIPTION ("MTD SMI driver for serial nor flash chips")

Macro Definition Documentation

#define BANK_EN (0xF << 0) /* enables all banks */

Definition at line 58 of file spear_smi.c.

#define BANK_SHIFT 12

Definition at line 74 of file spear_smi.c.

#define DSEL_TIME (0x6 << 4) /* Deselect time 6 + 1 SMI_CK periods */

Definition at line 59 of file spear_smi.c.

#define ERF1 0x400 /* Forbidden Write Request */

Definition at line 85 of file spear_smi.c.

#define ERF2 0x800 /* Forbidden Access */

Definition at line 86 of file spear_smi.c.

#define FAST_MODE (0x1 << 15) /* Fast Mode */

Definition at line 62 of file spear_smi.c.

#define FLASH_ID	(	n,
		es,
		id,
		psize,
		ssize,
		size
	)

Value:

{               \
    .name = n,      \
    .erase_cmd = es,    \
    .device_id = id,    \
    .pagesize = psize,  \
    .sectorsize = ssize,    \
    .size_in_bytes = size   \
}

Definition at line 105 of file spear_smi.c.

#define HOLD1 (0x1 << 16) /* Clock Hold period selection */

Definition at line 63 of file spear_smi.c.

#define OPCODE_RDID 0x9f /* Read JEDEC ID */

Definition at line 91 of file spear_smi.c.

#define RD_STATUS_REG (0x1 << 10) /* reads status reg */

Definition at line 69 of file spear_smi.c.

#define RX_LEN_SHIFT 4

Definition at line 73 of file spear_smi.c.

#define SEND (0x1 << 7) /* Send data */

Definition at line 66 of file spear_smi.c.

#define SMI_CMD_TIMEOUT (HZ / 10)

Definition at line 48 of file spear_smi.c.

#define SMI_CR1 0x0 /* SMI control register 1 */

Definition at line 51 of file spear_smi.c.

#define SMI_CR2 0x4 /* SMI control register 2 */

Definition at line 52 of file spear_smi.c.

#define SMI_MAX_CLOCK_FREQ 50000000 /* 50 MHz */

Definition at line 41 of file spear_smi.c.

#define SMI_MAX_TIME_OUT (3 * HZ)

Definition at line 45 of file spear_smi.c.

#define SMI_PROBE_TIMEOUT (HZ / 10)

Definition at line 44 of file spear_smi.c.

#define SMI_RR 0x10 /* SMI receive register */

Definition at line 55 of file spear_smi.c.

#define SMI_SR 0x8 /* SMI status register */

Definition at line 53 of file spear_smi.c.

#define SMI_TR 0xC /* SMI transmit register */

Definition at line 54 of file spear_smi.c.

#define SR_BP0 0x4 /* Block protect 0 */

Definition at line 79 of file spear_smi.c.

#define SR_BP1 0x8 /* Block protect 1 */

Definition at line 80 of file spear_smi.c.

#define SR_BP2 0x10 /* Block protect 2 */

Definition at line 81 of file spear_smi.c.

#define SR_SRWD 0x80 /* SR write protect */

Definition at line 82 of file spear_smi.c.

#define SR_WEL 0x2 /* Write enable latch */

Definition at line 78 of file spear_smi.c.

#define SR_WIP 0x1 /* Write in progress */

Definition at line 77 of file spear_smi.c.

#define SW_MODE (0x1 << 28) /* enables SW Mode */

Definition at line 60 of file spear_smi.c.

#define TFF 0x100 /* Transfer Finished Flag */

Definition at line 83 of file spear_smi.c.

#define TFIE (0x1 << 8) /* Transmission Flag Interrupt Enable */

Definition at line 67 of file spear_smi.c.

#define TX_LEN_SHIFT 0

Definition at line 72 of file spear_smi.c.

#define WB_MODE (0x1 << 29) /* Write Burst Mode */

Definition at line 61 of file spear_smi.c.

#define WCF 0x200 /* Transfer Finished Flag */

Definition at line 84 of file spear_smi.c.

#define WCIE (0x1 << 9) /* Write Complete Interrupt Enable */

Definition at line 68 of file spear_smi.c.

#define WE (0x1 << 11) /* Write Enable */

Definition at line 70 of file spear_smi.c.

#define WM_SHIFT 12

Definition at line 88 of file spear_smi.c.

Function Documentation

MODULE_AUTHOR	(	"Ashish	Priyadarshi,
		Shiraz Hashim< shiraz.hashim @st.com >"
	)

MODULE_DESCRIPTION ( "MTD SMI driver for serial nor flash chips" )

module_exit ( spear_smi_exit )

module_init ( spear_smi_init )

MODULE_LICENSE ( "GPL" )

Data Structures

Macros

Functions

Macro Definition Documentation

Function Documentation