mtd/devices/spear_smi.c

2  * SMI (Serial Memory Controller) device driver for Serial NOR Flash on
5  * interface has been replaced by SMI.
40 /* SMI clock rate */
50 /* registers of smi */
51 #define SMI_CR1		0x0	/* SMI control register 1 */
52 #define SMI_CR2		0x4	/* SMI control register 2 */
53 #define SMI_SR		0x8	/* SMI status register */
54 #define SMI_TR		0xC	/* SMI transmit register */
55 #define SMI_RR		0x10	/* SMI receive register */
157  * struct spear_smi - Structure for SMI Device
160  * @status: current status register of SMI.
161  * @clk_rate: functional clock rate of SMI (default: SMI_MAX_CLOCK_FREQ)
162  * @lock: lock to prevent parallel access of SMI.
163  * @io_base: base address for registers of SMI.
167  * @flash: separate structure for each Serial NOR-flash attached to SMI.
214  * spear_smi_read_sr - Read status register of flash through SMI
215  * @dev: structure of SMI information.
230 	/* program smi in hw mode */
257  * @dev: structure of SMI information.
284 	dev_err(&dev->pdev->dev, "smi controller is busy, timeout\n");
289  * spear_smi_int_handler - SMI Interrupt Handler.
291  * @dev_id: structure of SMI device, embedded in dev_id.
319  * spear_smi_hw_init - initializes the smi controller.
320  * @dev: structure of smi device
322  * this routine initializes the smi controller wit the default values
332 	/* functional clock of smi */
373  * @dev: structure of SMI device
388 	/* program smi in h/w mode */
404 			"smi controller failed on write enable\n");
435  * @dev: structure of SMI information
575 	/* put smi in hw mode not wbt mode */
626 	/* put smi in write enable */
631 	/* put smi in hw, write burst mode */
738  * @dev: structure of SMI information.
757 	/* put smi in sw mode */
824 			of_property_read_bool(pp, "st,smi-fast-mode");
871 		dev_info(&dev->pdev->dev, "smi-nor%d not found\n", bank);
1005 		dev_err(&dev->pdev->dev, "SMI IRQ allocation failed\n");
1014 	/* loop for each serial nor-flash which is connected to smi */
1082 	{ .compatible = "st,spear600-smi" },
1090 		.name = "smi",
1102 MODULE_DESCRIPTION("MTD SMI driver for serial nor flash chips");