1 // SPDX-License-Identifier: GPL-2.0-or-later
6  * Copyright © 2007-2008  Andres Salomon <dilinger@debian.org>
19 #include <linux/olpc-ec.h>
29 /* what the timeout *should* be (in ms) */
32 /* the timeout that bugs in the EC might force us to actually use */
39 		printk(KERN_ERR "olpc-ec:  invalid argument to "  in olpc_ec_timeout_set()
42 	printk(KERN_DEBUG "olpc-ec:  using %d ms delay for EC commands.\n",  in olpc_ec_timeout_set()
68 	for (timeo = ec_timeout; state != desired && timeo; timeo--) {  in __wait_on_ibf()
74 			timeo < (ec_timeout - EC_BASE_TIMEOUT)) {  in __wait_on_ibf()
75 		printk(KERN_WARNING "olpc-ec:  %d: waited %u ms for IBF!\n",  in __wait_on_ibf()
76 				line, ec_timeout - timeo);  in __wait_on_ibf()
88 	for (timeo = ec_timeout; state != desired && timeo; timeo--) {  in __wait_on_obf()
94 			timeo < (ec_timeout - EC_BASE_TIMEOUT)) {  in __wait_on_obf()
95 		printk(KERN_WARNING "olpc-ec:  %d: waited %u ms for OBF!\n",  in __wait_on_obf()
96 				line, ec_timeout - timeo);  in __wait_on_obf()
109 static int olpc_xo1_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,  in olpc_xo1_ec_cmd()  argument
112 	int ret = -EIO;  in olpc_xo1_ec_cmd()
120 		printk(KERN_ERR "olpc-ec:  timeout while attempting to "  in olpc_xo1_ec_cmd()
126 		printk(KERN_ERR "olpc-ec:  timeout waiting for EC to "  in olpc_xo1_ec_cmd()
141 	pr_devel("olpc-ec:  running cmd 0x%x\n", cmd);  in olpc_xo1_ec_cmd()
142 	outb(cmd, 0x6c);  in olpc_xo1_ec_cmd()
145 		printk(KERN_ERR "olpc-ec:  timeout waiting for EC to read "  in olpc_xo1_ec_cmd()
153 			pr_devel("olpc-ec:  sending cmd arg 0x%x\n", inbuf[i]);  in olpc_xo1_ec_cmd()
156 				printk(KERN_ERR "olpc-ec:  timeout waiting for"  in olpc_xo1_ec_cmd()
166 				printk(KERN_ERR "olpc-ec:  timeout waiting for"  in olpc_xo1_ec_cmd()
173 			pr_devel("olpc-ec:  received 0x%x\n", outbuf[i]);  in olpc_xo1_ec_cmd()
196 	rev = of_get_property(root, "board-revision-int", &propsize);  in get_board_revision()
229 	pdev = platform_device_register_simple("xo1-rfkill", -1, NULL, 0);  in add_xo1_platform_devices()
233 	pdev = platform_device_register_simple("olpc-xo1", -1, NULL, 0);  in add_xo1_platform_devices()
268 	 * XO-1 EC wakeups are available when olpc-xo1-sci driver is
279 	 * XO-1.5 EC wakeups are available when olpc-xo15-sci driver is
293 	/* register the XO-1 and 1.5-specific EC handler */  in olpc_init()
294 	if (olpc_platform_info.boardrev < olpc_board_pre(0xd0))	/* XO-1 */  in olpc_init()
298 	platform_device_register_simple("olpc-ec", -1, NULL, 0);  in olpc_init()
306 	 * XO-1 only. */  in olpc_init()
312 	if (olpc_platform_info.boardrev < olpc_board_pre(0xd0)) { /* XO-1 */  in olpc_init()