2  * am300epd.c -- Platform device for AM300 EPD kit
10  * This work was made possible by help and equipment support from E-Ink
14  * on the AM300 EPD prototype kit/development kit with an E-Ink 800x600
32 #include "mfp-pxa25x.h"
34 #include <linux/platform_data/video-pxafb.h>
40 static unsigned int panel_type = 6;
56 	/* this is the 16-bit hdb bus 58-73 */
94 static int gpios[] = { PWR_GPIO_PIN, CFG_GPIO_PIN, RDY_GPIO_PIN, DC_GPIO_PIN,  variable
100 static int am300_wait_event(struct broadsheetfb_par *par)  in am300_wait_event()
103 	wait_event(par->waitq, gpio_get_value(RDY_GPIO_PIN));  in am300_wait_event()
107 static int am300_init_gpio_regs(struct broadsheetfb_par *par)  in am300_init_gpio_regs()
109 	int i;  in am300_init_gpio_regs()
110 	int err;  in am300_init_gpio_regs()
113 	for (i = 0; i < ARRAY_SIZE(gpios); i++) {  in am300_init_gpio_regs()
114 		err = gpio_request(gpios[i], gpio_names[i]);  in am300_init_gpio_regs()
116 			dev_err(&am300_device->dev, "failed requesting "  in am300_init_gpio_regs()
127 			dev_err(&am300_device->dev, "failed requesting "  in am300_init_gpio_regs()
161 	while (--i >= DB0_GPIO_PIN)  in am300_init_gpio_regs()
163 	i = ARRAY_SIZE(gpios);  in am300_init_gpio_regs()
165 	while (--i >= 0)  in am300_init_gpio_regs()
166 		gpio_free(gpios[i]);  in am300_init_gpio_regs()
171 static int am300_init_board(struct broadsheetfb_par *par)  in am300_init_board()
178 	int i;  in am300_cleanup()
182 	for (i = 0; i < ARRAY_SIZE(gpios); i++)  in am300_cleanup()
183 		gpio_free(gpios[i]);  in am300_cleanup()
193 	int i;  in am300_get_hdb()
195 	for (i = 0; i <= (DB15_GPIO_PIN - DB0_GPIO_PIN) ; i++)  in am300_get_hdb()
203 	int i;  in am300_set_hdb()
205 	for (i = 0; i <= (DB15_GPIO_PIN - DB0_GPIO_PIN) ; i++)  in am300_set_hdb()
226 static int am300_get_panel_type(void)  in am300_get_panel_type()
231 static irqreturn_t am300_handle_irq(int irq, void *dev_id)  in am300_handle_irq()
235 	wake_up(&par->waitq);  in am300_handle_irq()
239 static int am300_setup_irq(struct fb_info *info)  in am300_setup_irq()
241 	int ret;  in am300_setup_irq()
242 	struct broadsheetfb_par *par = info->par;  in am300_setup_irq()
247 		dev_err(&am300_device->dev, "request_irq failed: %d\n", ret);  in am300_setup_irq()
264 int __init am300_init(void)  in am300_init()
266 	int ret;  in am300_init()
273 	am300_device = platform_device_alloc("broadsheetfb", -1);  in am300_init()
275 		return -ENOMEM;  in am300_init()