3 * Philips UCB1400 multifunction chip
5 * Based on ucb1400_ts.c:
6 * Author: Nicolas Pitre
7 * Created: September 25, 2006
8 * Copyright: MontaVista Software, Inc.
10 * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
11 * If something doesn't work and it worked before spliting, e-mail me,
12 * dont bother Nicolas please ;-)
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
18 * This code is heavily based on ucb1x00-*.c copyrighted by Russell King
19 * covering the UCB1100, UCB1200 and UCB1300.. Support for the UCB1400 has
20 * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
23 #include <linux/module.h>
24 #include <linux/sched.h>
25 #include <linux/slab.h>
26 #include <linux/ucb1400.h>
28 unsigned int ucb1400_adc_read(struct snd_ac97 *ac97, u16 adc_channel,
34 adc_channel |= UCB_ADC_SYNC_ENA;
36 ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel);
37 ucb1400_reg_write(ac97, UCB_ADC_CR, UCB_ADC_ENA | adc_channel |
40 while (!((val = ucb1400_reg_read(ac97, UCB_ADC_DATA))
42 schedule_timeout_uninterruptible(1);
44 return val & UCB_ADC_DAT_MASK;
46 EXPORT_SYMBOL_GPL(ucb1400_adc_read);
48 static int ucb1400_core_probe(struct device *dev)
52 struct ucb1400_ts ucb_ts;
53 struct ucb1400_gpio ucb_gpio;
54 struct snd_ac97 *ac97;
55 struct ucb1400_pdata *pdata = dev->platform_data;
57 memset(&ucb_ts, 0, sizeof(ucb_ts));
58 memset(&ucb_gpio, 0, sizeof(ucb_gpio));
60 ucb = kzalloc(sizeof(struct ucb1400), GFP_KERNEL);
66 dev_set_drvdata(dev, ucb);
68 ac97 = to_ac97_t(dev);
70 ucb_ts.id = ucb1400_reg_read(ac97, UCB_ID);
71 if (ucb_ts.id != UCB_ID_1400) {
79 ucb_gpio.gpio_setup = pdata->gpio_setup;
80 ucb_gpio.gpio_teardown = pdata->gpio_teardown;
81 ucb_gpio.gpio_offset = pdata->gpio_offset;
83 ucb->ucb1400_gpio = platform_device_alloc("ucb1400_gpio", -1);
84 if (!ucb->ucb1400_gpio) {
88 err = platform_device_add_data(ucb->ucb1400_gpio, &ucb_gpio,
92 err = platform_device_add(ucb->ucb1400_gpio);
99 if (pdata != NULL && pdata->irq >= 0)
100 ucb_ts.irq = pdata->irq;
104 ucb->ucb1400_ts = platform_device_alloc("ucb1400_ts", -1);
105 if (!ucb->ucb1400_ts) {
109 err = platform_device_add_data(ucb->ucb1400_ts, &ucb_ts,
113 err = platform_device_add(ucb->ucb1400_ts);
120 platform_device_put(ucb->ucb1400_ts);
122 platform_device_del(ucb->ucb1400_gpio);
124 platform_device_put(ucb->ucb1400_gpio);
131 static int ucb1400_core_remove(struct device *dev)
133 struct ucb1400 *ucb = dev_get_drvdata(dev);
135 platform_device_unregister(ucb->ucb1400_ts);
136 platform_device_unregister(ucb->ucb1400_gpio);
142 static struct device_driver ucb1400_core_driver = {
143 .name = "ucb1400_core",
144 .bus = &ac97_bus_type,
145 .probe = ucb1400_core_probe,
146 .remove = ucb1400_core_remove,
149 static int __init ucb1400_core_init(void)
151 return driver_register(&ucb1400_core_driver);
154 static void __exit ucb1400_core_exit(void)
156 driver_unregister(&ucb1400_core_driver);
159 module_init(ucb1400_core_init);
160 module_exit(ucb1400_core_exit);
162 MODULE_DESCRIPTION("Philips UCB1400 driver");
163 MODULE_LICENSE("GPL");