2 * Copyright 2009-2010 Pengutronix
3 * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
5 * loosely based on an earlier driver that has
6 * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
8 * This program is free software; you can redistribute it and/or modify it under
9 * the terms of the GNU General Public License version 2 as published by the
10 * Free Software Foundation.
13 #include <linux/slab.h>
14 #include <linux/module.h>
15 #include <linux/platform_device.h>
16 #include <linux/mutex.h>
17 #include <linux/interrupt.h>
18 #include <linux/mfd/core.h>
19 #include <linux/mfd/mc13xxx.h>
21 #include <linux/of_device.h>
22 #include <linux/of_gpio.h>
23 #include <linux/err.h>
24 #include <linux/spi/spi.h>
28 static const struct spi_device_id mc13xxx_device_id
[] = {
31 .driver_data
= MC13XXX_ID_MC13783
,
34 .driver_data
= MC13XXX_ID_MC13892
,
39 MODULE_DEVICE_TABLE(spi
, mc13xxx_device_id
);
41 static const struct of_device_id mc13xxx_dt_ids
[] = {
42 { .compatible
= "fsl,mc13783", .data
= (void *) MC13XXX_ID_MC13783
, },
43 { .compatible
= "fsl,mc13892", .data
= (void *) MC13XXX_ID_MC13892
, },
46 MODULE_DEVICE_TABLE(of
, mc13xxx_dt_ids
);
48 static struct regmap_config mc13xxx_regmap_spi_config
= {
53 .max_register
= MC13XXX_NUMREGS
,
55 .cache_type
= REGCACHE_NONE
,
58 static int mc13xxx_spi_probe(struct spi_device
*spi
)
60 const struct of_device_id
*of_id
;
61 struct spi_driver
*sdrv
= to_spi_driver(spi
->dev
.driver
);
62 struct mc13xxx
*mc13xxx
;
63 struct mc13xxx_platform_data
*pdata
= dev_get_platdata(&spi
->dev
);
66 of_id
= of_match_device(mc13xxx_dt_ids
, &spi
->dev
);
68 sdrv
->id_table
= &mc13xxx_device_id
[(enum mc13xxx_id
) of_id
->data
];
70 mc13xxx
= kzalloc(sizeof(*mc13xxx
), GFP_KERNEL
);
74 dev_set_drvdata(&spi
->dev
, mc13xxx
);
75 spi
->mode
= SPI_MODE_0
| SPI_CS_HIGH
;
76 spi
->bits_per_word
= 32;
78 mc13xxx
->dev
= &spi
->dev
;
79 mutex_init(&mc13xxx
->lock
);
81 mc13xxx
->regmap
= regmap_init_spi(spi
, &mc13xxx_regmap_spi_config
);
82 if (IS_ERR(mc13xxx
->regmap
)) {
83 ret
= PTR_ERR(mc13xxx
->regmap
);
84 dev_err(mc13xxx
->dev
, "Failed to initialize register map: %d\n",
86 dev_set_drvdata(&spi
->dev
, NULL
);
91 ret
= mc13xxx_common_init(mc13xxx
, pdata
, spi
->irq
);
94 dev_set_drvdata(&spi
->dev
, NULL
);
96 const struct spi_device_id
*devid
=
97 spi_get_device_id(spi
);
98 if (!devid
|| devid
->driver_data
!= mc13xxx
->ictype
)
99 dev_warn(mc13xxx
->dev
,
100 "device id doesn't match auto detection!\n");
106 static int __devexit
mc13xxx_spi_remove(struct spi_device
*spi
)
108 struct mc13xxx
*mc13xxx
= dev_get_drvdata(&spi
->dev
);
110 mc13xxx_common_cleanup(mc13xxx
);
115 static struct spi_driver mc13xxx_spi_driver
= {
116 .id_table
= mc13xxx_device_id
,
119 .owner
= THIS_MODULE
,
120 .of_match_table
= mc13xxx_dt_ids
,
122 .probe
= mc13xxx_spi_probe
,
123 .remove
= __devexit_p(mc13xxx_spi_remove
),
126 static int __init
mc13xxx_init(void)
128 return spi_register_driver(&mc13xxx_spi_driver
);
130 subsys_initcall(mc13xxx_init
);
132 static void __exit
mc13xxx_exit(void)
134 spi_unregister_driver(&mc13xxx_spi_driver
);
136 module_exit(mc13xxx_exit
);
138 MODULE_DESCRIPTION("Core driver for Freescale MC13XXX PMIC");
139 MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
140 MODULE_LICENSE("GPL v2");