drivers/gpio/pca953x.c

1 // SPDX-License-Identifier: GPL-2.0
68 			return -1;  in pca953x_reg_write()
76 			return -1;  in pca953x_reg_write()
94 			return -1;  in pca953x_reg_read()
98 			return -1;  in pca953x_reg_read()
114  * Set read polarity of IO pins in 'mask' to corresponding value in 'data'
124  * 0 = output, 1 = input
139 		return -1;  in pca953x_get_val()
153 	int msb = nr_gpio - 1;  in pca953x_info()
157 	for (i = msb; i >= 0; i--)  in pca953x_info()
160 	for (i = 11 + nr_gpio; i > 0; i--)  in pca953x_info()
161 		printf("-");  in pca953x_info()
165 		return -1;  in pca953x_info()
167 	for (i = msb; i >= 0; i--)  in pca953x_info()
172 		return -1;  in pca953x_info()
173 	printf("invert:    ");  in pca953x_info()
174 	for (i = msb; i >= 0; i--)  in pca953x_info()
179 		return -1;  in pca953x_info()
180 	printf("input:     ");  in pca953x_info()
181 	for (i = msb; i >= 0; i--)  in pca953x_info()
186 		return -1;  in pca953x_info()
188 	for (i = msb; i >= 0; i--)  in pca953x_info()
198 	U_BOOT_CMD_MKENT(input, 3, 0, (void *)PCA953X_CMD_INPUT, "", ""),
199 	U_BOOT_CMD_MKENT(invert, 4, 0, (void *)PCA953X_CMD_INVERT, "", ""),
214 	if (!c || !((argc == (c->maxargs)) ||  in do_pca953x()
215 		(((long)c->cmd == PCA953X_CMD_DEVICE) &&  in do_pca953x()
216 		 (argc == (c->maxargs - 1))))) {  in do_pca953x()
224 	/* arg3 used as pin or invert value */  in do_pca953x()
228 	switch ((long)c->cmd) {  in do_pca953x()
282 	"	- show or set current device address\n"
284 	"	- display info for current chip\n"
286 	"	- set pin as output and drive low or high\n"
287 	"pca953x invert pin 0|1\n"
288 	"	- disable/enable polarity inversion for reads\n"
289 	"pca953x input pin\n"
290 	"	- set pin as input and read value"