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mfd: twl6040: Add twl6040-gpio child 

Add needed platform data structure and code to be able to load
the GPO child of twl6040.
Update the devicetree binding documentation at the same time.

Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Peter Ujfalusi 2012-08-16 15:13:14 +03:00 committed by Samuel Ortiz
parent 35736dce6c
commit 5cbe786a6e
3 changed files with 29 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Documentation/devicetree/bindings/mfd/twl6040.txt
View File

@ -1,7 +1,7 @@
Texas Instruments TWL6040 family
The TWL6040s are 8-channel high quality low-power audio codecs providing audio
and vibra functionality on OMAP4+ platforms.
The TWL6040s are 8-channel high quality low-power audio codecs providing audio,
vibra and GPO functionality on OMAP4+ platforms.
They are connected ot the host processor via i2c for commands, McPDM for audio
data and commands.
@ -10,6 +10,8 @@ Required properties:
- reg: must be 0x4b for i2c address
- interrupts: twl6040 has one interrupt line connecteded to the main SoC
- interrupt-parent: The parent interrupt controller
- gpio-controller:
- #gpio-cells = <1>: twl6040 provides GPO lines.
- twl6040,audpwron-gpio: Power on GPIO line for the twl6040
- vio-supply: Regulator for the twl6040 VIO supply
@ -37,7 +39,6 @@ Example:
&i2c1 {
twl6040: twl@4b {
compatible = "ti,twl6040";
reg = <0x4b>;
interrupts = <0 119 4>;
interrupt-parent = <&gic>;
@ -60,3 +61,5 @@ Example:
};
};
};
/include/ "twl6040.dtsi"

15
drivers/mfd/twl6040-core.c
View File

@ -631,6 +631,21 @@ static int __devinit twl6040_probe(struct i2c_client *client,
children++;
}
/*
* Enable the GPO driver in the following cases:
* DT booted kernel or legacy boot with valid gpo platform_data
*/
if (!pdata || (pdata && pdata->gpo)) {
cell = &twl6040->cells[children];
cell->name = "twl6040-gpo";
if (pdata) {
cell->platform_data = pdata->gpo;
cell->pdata_size = sizeof(*pdata->gpo);
}
children++;
}
ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children,
NULL, 0, NULL);
if (ret)

9
include/linux/mfd/twl6040.h
View File

@ -158,7 +158,7 @@
#define TWL6040_VIBROCDET 0x20
#define TWL6040_TSHUTDET 0x40
#define TWL6040_CELLS 2
#define TWL6040_CELLS 3
#define TWL6040_REV_ES1_0 0x00
#define TWL6040_REV_ES1_1 0x01 /* Rev ES1.1 and ES1.2 */
@ -176,6 +176,8 @@
#define TWL6040_SYSCLK_SEL_LPPLL 0
#define TWL6040_SYSCLK_SEL_HPPLL 1
#define TWL6040_GPO_MAX 3
struct twl6040_codec_data {
u16 hs_left_step;
u16 hs_right_step;
@ -192,12 +194,17 @@ struct twl6040_vibra_data {
int vddvibr_uV; /* VDDVIBR volt, set 0 for fixed reg */
};
struct twl6040_gpo_data {
int gpio_base;
};
struct twl6040_platform_data {
int audpwron_gpio; /* audio power-on gpio */
unsigned int irq_base;
struct twl6040_codec_data *codec;
struct twl6040_vibra_data *vibra;
struct twl6040_gpo_data *gpo;
};
struct regmap;