// 1. 更名为 wk2124A.h wk2124A.c
// 2. 在 Kconfig 加入如下配置：
429 config SPI_WK2124A
430 tristate "WK2124A spi to 4 uart drvier"
431 depends on SPI
432 help
433 SPI driver for wk2124 cs1 spi to 4 wire uart IC driver.
// 3 . 在 Makefile 里面加入：
61 obj-$(CONFIG_SPI_WK2124A) += wk2124A.o
// 4. 修改驱动源码
// 5. 在 头文件中修改：
// 修改主次设备号
144 #define SERIAL_WK2124A_MAJOR 190
145 #define CALLOUT_WK2124A_MAJOR 191
148 /* am33xx irq */
149 #define GPIO_TO_PIN(bank, gpio) (32 * (bank) + (gpio))
150 #define IH2_BASE 32
151 #define OMAP_MAX_GPIO_LINES 192
152 #define IH_GPIO_BASE (128 + IH2_BASE)
153 #define IH_MPUIO_BASE (OMAP_MAX_GPIO_LINES + IH_GPIO_BASE)
154 #define OMAP_IRQ_END (IH_MPUIO_BASE + 16)
155 #define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES)
156 #define OMAP_GPIO_IRQ(nr) (OMAP_GPIO_IS_MPUIO(nr) ?
157 IH_MPUIO_BASE + ((nr) & 0x0f) :
158 IH_GPIO_BASE + (nr))
159
160 //wk2xxx hardware configuration
161 #define IRQ_WK2124A OMAP_GPIO_IRQ(GPIO_TO_PIN(0, 23))
// 这段代码是加入 AM335X 中断的选择
// 在 wk2124A.c 里面修改
29 #include "wk2124A.h"
1476 static struct uart_driver wk2124_uart_driver = {
1477 owner: THIS_MODULE,
1478 major: SERIAL_WK2124A_MAJOR,
1479 #ifdef CONFIG_DEVFS_FS
1480 driver_name: "ttySWZA",
1481 dev_name: "ttysWZA",
1482 #else
1483 driver_name: "ttySWZA",
1484 dev_name: "ttysWZA",
1485 #endif
1486 minor: MINOR_START,
1487 nr: NR_PORTS,
1488 cons: NULL//WK2Xxx_CONSOLE,
1489 };
1595 static struct spi_driver wk2124A_driver = {
1596 .driver = {
1597 .name = "wk2124A",
1598 .bus = &spi_bus_type,
1599 .owner = THIS_MODULE,
1600 },
1601
1602 .probe = wk2124A_probe, // 相应的， probe 的名字也要修改
1603 .remove = __devexit_p(wk2124_remove),
1604 .resume = wk2124_resume,
1605 };
1607 static int __init wk2124A_init(void)
1608 {
1609 int retval;
1610
1611 retval = spi_register_driver(&wk2124A_driver);
1612 printk(KERN_ALERT "rgister spi return v = :%d
", retval);
1613
1614 return retval;
1615 }
1616
1617 static void __exit wk2124A_exit(void)
1618 {
1619 spi_unregister_driver(&wk2124A_driver);
1620 printk("TEST_REG:quit ");
1621 }
1622
1623 module_init(wk2124A_init);
1624 module_exit(wk2124A_exit);
1625
1626 MODULE_AUTHOR("WKIC Ltd");
1627 MODULE_DESCRIPTION("wk2xxx generic serial port driver");
1628 MODULE_LICENSE("GPL");
// 修改 init 函数名字以及 驱动名字
841 static struct spi_board_info am335x_spi0_slave_info[] = {
842 #if 0
843 {
844 .modalias = "spidev",
845 .max_speed_hz = 10000000,//48Mbps
846 .bus_num = 1,
847 .chip_select = 0,
848 .mode = SPI_MODE_0,
849 },
850 #endif
851 #if 1
852 {
853 .modalias = "wk2124A", // compiler
854 .mode = SPI_MODE_0,
855 .max_speed_hz = 10000000, // speed 10Mbps
856 .bus_num = 1, // spi0 bus
857 .chip_select = 0, // spi_cs0
858 },
859 #endif
860 };