4 * Copyright 2011-2012 Texas Instruments Inc.
6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/i2c.h>
20 #include <linux/interrupt.h>
21 #include <linux/irq.h>
22 #include <linux/regmap.h>
23 #include <linux/err.h>
24 #include <linux/mfd/core.h>
25 #include <linux/mfd/palmas.h>
26 #include <linux/of_platform.h>
42 static struct resource palmas_rtc_resources
[] = {
44 .start
= PALMAS_RTC_ALARM_IRQ
,
45 .end
= PALMAS_RTC_ALARM_IRQ
,
46 .flags
= IORESOURCE_IRQ
,
50 static const struct mfd_cell palmas_children
[] = {
52 .name
= "palmas-pmic",
56 .name
= "palmas-gpio",
60 .name
= "palmas-leds",
70 .resources
= &palmas_rtc_resources
[0],
71 .num_resources
= ARRAY_SIZE(palmas_rtc_resources
),
74 .name
= "palmas-pwrbutton",
75 .id
= PALMAS_PWRBUTTON_ID
,
78 .name
= "palmas-gpadc",
79 .id
= PALMAS_GPADC_ID
,
82 .name
= "palmas-resource",
83 .id
= PALMAS_RESOURCE_ID
,
99 static const struct regmap_config palmas_regmap_config
[PALMAS_NUM_CLIENTS
] = {
103 .max_register
= PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE
,
104 PALMAS_PRIMARY_SECONDARY_PAD3
),
109 .max_register
= PALMAS_BASE_TO_REG(PALMAS_GPADC_BASE
,
110 PALMAS_GPADC_SMPS_VSEL_MONITORING
),
115 .max_register
= PALMAS_BASE_TO_REG(PALMAS_TRIM_GPADC_BASE
,
116 PALMAS_GPADC_TRIM16
),
120 static const struct regmap_irq palmas_irqs
[] = {
122 [PALMAS_CHARG_DET_N_VBUS_OVV_IRQ
] = {
123 .mask
= PALMAS_INT1_STATUS_CHARG_DET_N_VBUS_OVV
,
125 [PALMAS_PWRON_IRQ
] = {
126 .mask
= PALMAS_INT1_STATUS_PWRON
,
128 [PALMAS_LONG_PRESS_KEY_IRQ
] = {
129 .mask
= PALMAS_INT1_STATUS_LONG_PRESS_KEY
,
131 [PALMAS_RPWRON_IRQ
] = {
132 .mask
= PALMAS_INT1_STATUS_RPWRON
,
134 [PALMAS_PWRDOWN_IRQ
] = {
135 .mask
= PALMAS_INT1_STATUS_PWRDOWN
,
137 [PALMAS_HOTDIE_IRQ
] = {
138 .mask
= PALMAS_INT1_STATUS_HOTDIE
,
140 [PALMAS_VSYS_MON_IRQ
] = {
141 .mask
= PALMAS_INT1_STATUS_VSYS_MON
,
143 [PALMAS_VBAT_MON_IRQ
] = {
144 .mask
= PALMAS_INT1_STATUS_VBAT_MON
,
147 [PALMAS_RTC_ALARM_IRQ
] = {
148 .mask
= PALMAS_INT2_STATUS_RTC_ALARM
,
151 [PALMAS_RTC_TIMER_IRQ
] = {
152 .mask
= PALMAS_INT2_STATUS_RTC_TIMER
,
156 .mask
= PALMAS_INT2_STATUS_WDT
,
159 [PALMAS_BATREMOVAL_IRQ
] = {
160 .mask
= PALMAS_INT2_STATUS_BATREMOVAL
,
163 [PALMAS_RESET_IN_IRQ
] = {
164 .mask
= PALMAS_INT2_STATUS_RESET_IN
,
167 [PALMAS_FBI_BB_IRQ
] = {
168 .mask
= PALMAS_INT2_STATUS_FBI_BB
,
171 [PALMAS_SHORT_IRQ
] = {
172 .mask
= PALMAS_INT2_STATUS_SHORT
,
175 [PALMAS_VAC_ACOK_IRQ
] = {
176 .mask
= PALMAS_INT2_STATUS_VAC_ACOK
,
180 [PALMAS_GPADC_AUTO_0_IRQ
] = {
181 .mask
= PALMAS_INT3_STATUS_GPADC_AUTO_0
,
184 [PALMAS_GPADC_AUTO_1_IRQ
] = {
185 .mask
= PALMAS_INT3_STATUS_GPADC_AUTO_1
,
188 [PALMAS_GPADC_EOC_SW_IRQ
] = {
189 .mask
= PALMAS_INT3_STATUS_GPADC_EOC_SW
,
192 [PALMAS_GPADC_EOC_RT_IRQ
] = {
193 .mask
= PALMAS_INT3_STATUS_GPADC_EOC_RT
,
196 [PALMAS_ID_OTG_IRQ
] = {
197 .mask
= PALMAS_INT3_STATUS_ID_OTG
,
201 .mask
= PALMAS_INT3_STATUS_ID
,
204 [PALMAS_VBUS_OTG_IRQ
] = {
205 .mask
= PALMAS_INT3_STATUS_VBUS_OTG
,
208 [PALMAS_VBUS_IRQ
] = {
209 .mask
= PALMAS_INT3_STATUS_VBUS
,
213 [PALMAS_GPIO_0_IRQ
] = {
214 .mask
= PALMAS_INT4_STATUS_GPIO_0
,
217 [PALMAS_GPIO_1_IRQ
] = {
218 .mask
= PALMAS_INT4_STATUS_GPIO_1
,
221 [PALMAS_GPIO_2_IRQ
] = {
222 .mask
= PALMAS_INT4_STATUS_GPIO_2
,
225 [PALMAS_GPIO_3_IRQ
] = {
226 .mask
= PALMAS_INT4_STATUS_GPIO_3
,
229 [PALMAS_GPIO_4_IRQ
] = {
230 .mask
= PALMAS_INT4_STATUS_GPIO_4
,
233 [PALMAS_GPIO_5_IRQ
] = {
234 .mask
= PALMAS_INT4_STATUS_GPIO_5
,
237 [PALMAS_GPIO_6_IRQ
] = {
238 .mask
= PALMAS_INT4_STATUS_GPIO_6
,
241 [PALMAS_GPIO_7_IRQ
] = {
242 .mask
= PALMAS_INT4_STATUS_GPIO_7
,
247 static struct regmap_irq_chip palmas_irq_chip
= {
250 .num_irqs
= ARRAY_SIZE(palmas_irqs
),
254 .status_base
= PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE
,
256 .mask_base
= PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE
,
260 static int palmas_set_pdata_irq_flag(struct i2c_client
*i2c
,
261 struct palmas_platform_data
*pdata
)
263 struct irq_data
*irq_data
= irq_get_irq_data(i2c
->irq
);
265 dev_err(&i2c
->dev
, "Invalid IRQ: %d\n", i2c
->irq
);
269 pdata
->irq_flags
= irqd_get_trigger_type(irq_data
);
270 dev_info(&i2c
->dev
, "Irq flag is 0x%08x\n", pdata
->irq_flags
);
274 static void palmas_dt_to_pdata(struct i2c_client
*i2c
,
275 struct palmas_platform_data
*pdata
)
277 struct device_node
*node
= i2c
->dev
.of_node
;
281 ret
= of_property_read_u32(node
, "ti,mux-pad1", &prop
);
283 pdata
->mux_from_pdata
= 1;
287 ret
= of_property_read_u32(node
, "ti,mux-pad2", &prop
);
289 pdata
->mux_from_pdata
= 1;
293 /* The default for this register is all masked */
294 ret
= of_property_read_u32(node
, "ti,power-ctrl", &prop
);
296 pdata
->power_ctrl
= prop
;
298 pdata
->power_ctrl
= PALMAS_POWER_CTRL_NSLEEP_MASK
|
299 PALMAS_POWER_CTRL_ENABLE1_MASK
|
300 PALMAS_POWER_CTRL_ENABLE2_MASK
;
302 palmas_set_pdata_irq_flag(i2c
, pdata
);
305 static int palmas_i2c_probe(struct i2c_client
*i2c
,
306 const struct i2c_device_id
*id
)
308 struct palmas
*palmas
;
309 struct palmas_platform_data
*pdata
;
310 struct device_node
*node
= i2c
->dev
.of_node
;
312 unsigned int reg
, addr
;
314 struct mfd_cell
*children
;
316 pdata
= dev_get_platdata(&i2c
->dev
);
318 if (node
&& !pdata
) {
319 pdata
= devm_kzalloc(&i2c
->dev
, sizeof(*pdata
), GFP_KERNEL
);
324 palmas_dt_to_pdata(i2c
, pdata
);
330 palmas
= devm_kzalloc(&i2c
->dev
, sizeof(struct palmas
), GFP_KERNEL
);
334 i2c_set_clientdata(i2c
, palmas
);
335 palmas
->dev
= &i2c
->dev
;
336 palmas
->id
= id
->driver_data
;
337 palmas
->irq
= i2c
->irq
;
339 for (i
= 0; i
< PALMAS_NUM_CLIENTS
; i
++) {
341 palmas
->i2c_clients
[i
] = i2c
;
343 palmas
->i2c_clients
[i
] =
344 i2c_new_dummy(i2c
->adapter
,
346 if (!palmas
->i2c_clients
[i
]) {
348 "can't attach client %d\n", i
);
352 palmas
->i2c_clients
[i
]->dev
.of_node
= of_node_get(node
);
354 palmas
->regmap
[i
] = devm_regmap_init_i2c(palmas
->i2c_clients
[i
],
355 &palmas_regmap_config
[i
]);
356 if (IS_ERR(palmas
->regmap
[i
])) {
357 ret
= PTR_ERR(palmas
->regmap
[i
]);
359 "Failed to allocate regmap %d, err: %d\n",
365 /* Change interrupt line output polarity */
366 if (pdata
->irq_flags
& IRQ_TYPE_LEVEL_HIGH
)
367 reg
= PALMAS_POLARITY_CTRL_INT_POLARITY
;
370 ret
= palmas_update_bits(palmas
, PALMAS_PU_PD_OD_BASE
,
371 PALMAS_POLARITY_CTRL
, PALMAS_POLARITY_CTRL_INT_POLARITY
,
374 dev_err(palmas
->dev
, "POLARITY_CTRL updat failed: %d\n", ret
);
378 /* Change IRQ into clear on read mode for efficiency */
379 slave
= PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE
);
380 addr
= PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE
, PALMAS_INT_CTRL
);
381 reg
= PALMAS_INT_CTRL_INT_CLEAR
;
383 regmap_write(palmas
->regmap
[slave
], addr
, reg
);
385 ret
= regmap_add_irq_chip(palmas
->regmap
[slave
], palmas
->irq
,
386 IRQF_ONESHOT
| pdata
->irq_flags
, 0, &palmas_irq_chip
,
391 slave
= PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE
);
392 addr
= PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE
,
393 PALMAS_PRIMARY_SECONDARY_PAD1
);
395 if (pdata
->mux_from_pdata
) {
397 ret
= regmap_write(palmas
->regmap
[slave
], addr
, reg
);
401 ret
= regmap_read(palmas
->regmap
[slave
], addr
, ®
);
406 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0
))
407 palmas
->gpio_muxed
|= PALMAS_GPIO_0_MUXED
;
408 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK
))
409 palmas
->gpio_muxed
|= PALMAS_GPIO_1_MUXED
;
410 else if ((reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK
) ==
411 (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT
))
412 palmas
->led_muxed
|= PALMAS_LED1_MUXED
;
413 else if ((reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK
) ==
414 (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT
))
415 palmas
->pwm_muxed
|= PALMAS_PWM1_MUXED
;
416 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK
))
417 palmas
->gpio_muxed
|= PALMAS_GPIO_2_MUXED
;
418 else if ((reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK
) ==
419 (2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT
))
420 palmas
->led_muxed
|= PALMAS_LED2_MUXED
;
421 else if ((reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK
) ==
422 (3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT
))
423 palmas
->pwm_muxed
|= PALMAS_PWM2_MUXED
;
424 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3
))
425 palmas
->gpio_muxed
|= PALMAS_GPIO_3_MUXED
;
427 addr
= PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE
,
428 PALMAS_PRIMARY_SECONDARY_PAD2
);
430 if (pdata
->mux_from_pdata
) {
432 ret
= regmap_write(palmas
->regmap
[slave
], addr
, reg
);
436 ret
= regmap_read(palmas
->regmap
[slave
], addr
, ®
);
441 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4
))
442 palmas
->gpio_muxed
|= PALMAS_GPIO_4_MUXED
;
443 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK
))
444 palmas
->gpio_muxed
|= PALMAS_GPIO_5_MUXED
;
445 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6
))
446 palmas
->gpio_muxed
|= PALMAS_GPIO_6_MUXED
;
447 if (!(reg
& PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK
))
448 palmas
->gpio_muxed
|= PALMAS_GPIO_7_MUXED
;
450 dev_info(palmas
->dev
, "Muxing GPIO %x, PWM %x, LED %x\n",
451 palmas
->gpio_muxed
, palmas
->pwm_muxed
,
454 reg
= pdata
->power_ctrl
;
456 slave
= PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE
);
457 addr
= PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE
, PALMAS_POWER_CTRL
);
459 ret
= regmap_write(palmas
->regmap
[slave
], addr
, reg
);
464 * If we are probing with DT do this the DT way and return here
465 * otherwise continue and add devices using mfd helpers.
468 ret
= of_platform_populate(node
, NULL
, NULL
, &i2c
->dev
);
475 children
= kmemdup(palmas_children
, sizeof(palmas_children
),
482 children
[PALMAS_PMIC_ID
].platform_data
= pdata
->pmic_pdata
;
483 children
[PALMAS_PMIC_ID
].pdata_size
= sizeof(*pdata
->pmic_pdata
);
485 children
[PALMAS_GPADC_ID
].platform_data
= pdata
->gpadc_pdata
;
486 children
[PALMAS_GPADC_ID
].pdata_size
= sizeof(*pdata
->gpadc_pdata
);
488 children
[PALMAS_RESOURCE_ID
].platform_data
= pdata
->resource_pdata
;
489 children
[PALMAS_RESOURCE_ID
].pdata_size
=
490 sizeof(*pdata
->resource_pdata
);
492 children
[PALMAS_USB_ID
].platform_data
= pdata
->usb_pdata
;
493 children
[PALMAS_USB_ID
].pdata_size
= sizeof(*pdata
->usb_pdata
);
495 children
[PALMAS_CLK_ID
].platform_data
= pdata
->clk_pdata
;
496 children
[PALMAS_CLK_ID
].pdata_size
= sizeof(*pdata
->clk_pdata
);
498 ret
= mfd_add_devices(palmas
->dev
, -1,
499 children
, ARRAY_SIZE(palmas_children
),
501 regmap_irq_get_domain(palmas
->irq_data
));
510 mfd_remove_devices(palmas
->dev
);
512 regmap_del_irq_chip(palmas
->irq
, palmas
->irq_data
);
517 static int palmas_i2c_remove(struct i2c_client
*i2c
)
519 struct palmas
*palmas
= i2c_get_clientdata(i2c
);
521 mfd_remove_devices(palmas
->dev
);
522 regmap_del_irq_chip(palmas
->irq
, palmas
->irq_data
);
527 static const struct i2c_device_id palmas_i2c_id
[] = {
534 MODULE_DEVICE_TABLE(i2c
, palmas_i2c_id
);
536 static struct of_device_id of_palmas_match_tbl
[] = {
537 { .compatible
= "ti,palmas", },
541 static struct i2c_driver palmas_i2c_driver
= {
544 .of_match_table
= of_palmas_match_tbl
,
545 .owner
= THIS_MODULE
,
547 .probe
= palmas_i2c_probe
,
548 .remove
= palmas_i2c_remove
,
549 .id_table
= palmas_i2c_id
,
552 static int __init
palmas_i2c_init(void)
554 return i2c_add_driver(&palmas_i2c_driver
);
556 /* init early so consumer devices can complete system boot */
557 subsys_initcall(palmas_i2c_init
);
559 static void __exit
palmas_i2c_exit(void)
561 i2c_del_driver(&palmas_i2c_driver
);
563 module_exit(palmas_i2c_exit
);
565 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
566 MODULE_DESCRIPTION("Palmas chip family multi-function driver");
567 MODULE_LICENSE("GPL");