2 * AD7606 Parallel Interface ADC driver
4 * Copyright 2011 Analog Devices Inc.
6 * Licensed under the GPL-2.
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <linux/types.h>
12 #include <linux/err.h>
17 static int ad7606_par16_read_block(struct device
*dev
,
20 struct platform_device
*pdev
= to_platform_device(dev
);
21 struct ad7606_state
*st
= platform_get_drvdata(pdev
);
23 insw((unsigned long) st
->base_address
, buf
, count
);
28 static const struct ad7606_bus_ops ad7606_par16_bops
= {
29 .read_block
= ad7606_par16_read_block
,
32 static int ad7606_par8_read_block(struct device
*dev
,
35 struct platform_device
*pdev
= to_platform_device(dev
);
36 struct ad7606_state
*st
= platform_get_drvdata(pdev
);
38 insb((unsigned long) st
->base_address
, buf
, count
* 2);
43 static const struct ad7606_bus_ops ad7606_par8_bops
= {
44 .read_block
= ad7606_par8_read_block
,
47 static int __devinit
ad7606_par_probe(struct platform_device
*pdev
)
50 struct ad7606_state
*st
;
52 resource_size_t remap_size
;
55 irq
= platform_get_irq(pdev
, 0);
57 dev_err(&pdev
->dev
, "no irq\n");
61 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
65 remap_size
= resource_size(res
);
67 /* Request the regions */
68 if (!request_mem_region(res
->start
, remap_size
, "iio-ad7606")) {
72 addr
= ioremap(res
->start
, remap_size
);
78 st
= ad7606_probe(&pdev
->dev
, irq
, addr
,
79 platform_get_device_id(pdev
)->driver_data
,
80 remap_size
> 1 ? &ad7606_par16_bops
:
88 platform_set_drvdata(pdev
, st
);
95 release_mem_region(res
->start
, remap_size
);
100 static int __devexit
ad7606_par_remove(struct platform_device
*pdev
)
102 struct ad7606_state
*st
= platform_get_drvdata(pdev
);
103 struct resource
*res
;
107 iounmap(st
->base_address
);
108 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
109 release_mem_region(res
->start
, resource_size(res
));
111 platform_set_drvdata(pdev
, NULL
);
117 static int ad7606_par_suspend(struct device
*dev
)
119 struct ad7606_state
*st
= dev_get_drvdata(dev
);
126 static int ad7606_par_resume(struct device
*dev
)
128 struct ad7606_state
*st
= dev_get_drvdata(dev
);
135 static const struct dev_pm_ops ad7606_pm_ops
= {
136 .suspend
= ad7606_par_suspend
,
137 .resume
= ad7606_par_resume
,
139 #define AD7606_PAR_PM_OPS (&ad7606_pm_ops)
142 #define AD7606_PAR_PM_OPS NULL
143 #endif /* CONFIG_PM */
145 static struct platform_device_id ad7606_driver_ids
[] = {
148 .driver_data
= ID_AD7606_8
,
151 .driver_data
= ID_AD7606_6
,
154 .driver_data
= ID_AD7606_4
,
159 MODULE_DEVICE_TABLE(platform
, ad7606_driver_ids
);
161 static struct platform_driver ad7606_driver
= {
162 .probe
= ad7606_par_probe
,
163 .remove
= __devexit_p(ad7606_par_remove
),
164 .id_table
= ad7606_driver_ids
,
167 .owner
= THIS_MODULE
,
168 .pm
= AD7606_PAR_PM_OPS
,
172 static int __init
ad7606_init(void)
174 return platform_driver_register(&ad7606_driver
);
177 static void __exit
ad7606_cleanup(void)
179 platform_driver_unregister(&ad7606_driver
);
182 module_init(ad7606_init
);
183 module_exit(ad7606_cleanup
);
185 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
186 MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
187 MODULE_LICENSE("GPL v2");
188 MODULE_ALIAS("platform:ad7606_par");