OMAP4: PMIC: Add support for twl6030 codec

In order to have TWL6030 CODEC driver as a platform driver, codec data
should be passed through twl_platform_data structure.

For twl6030 audio codec, the following data may be passed:
- audpwron_gpio: gpio line used to power-up/down the codec. A low-to-high
transition powers codec up. Setting audpwron_gpio to a negative value
means that codec will use manual power sequence instead of automatic
sequence
- naudint_irq: irq line for audio interrupt. twl6030 drives NAUDINT line
to low when an interrupt (codec ready, plug insertion/removal, etc) is
detected

However, codec driver can operate if any or none of them are passed.

Signed-off-by: Misael Lopez Cruz <[e-mail]>
Signed-off-by: Margarita Olaya Cabrera <[e-mail]>
Signed-off-by: Jorge Eduardo Candelaria <[e-mail]>
Acked-by: Samuel Ortiz <[e-mail]>
Acked-by: Liam Girdwood <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/mfd/twl-core.c

···
 #define twl_has_watchdog()        false
 #endif
 
-#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE)
+#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\
+	defined(CONFIG_SND_SOC_TWL6030) || defined(CONFIG_SND_SOC_TWL6030_MODULE)
 #define twl_has_codec()	true
 #else
 #define twl_has_codec()	false
···
 			return PTR_ERR(child);
 	}
 
-	if (twl_has_codec() && pdata->codec) {
-		child = add_child(1, "twl4030_codec",
+	if (twl_has_codec() && pdata->codec && twl_class_is_4030()) {
+		sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
+		child = add_child(sub_chip_id, "twl4030_codec",
+				pdata->codec, sizeof(*pdata->codec),
+				false, 0, 0);
+		if (IS_ERR(child))
+			return PTR_ERR(child);
+	}
+
+	/* Phoenix*/
+	if (twl_has_codec() && pdata->codec && twl_class_is_6030()) {
+		sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
+		child = add_child(sub_chip_id, "twl6030_codec",
 				pdata->codec, sizeof(*pdata->codec),
 				false, 0, 0);
 		if (IS_ERR(child))

include/linux/i2c/twl.h

···
 	unsigned int	audio_mclk;
 	struct twl4030_codec_audio_data		*audio;
 	struct twl4030_codec_vibra_data		*vibra;
+
+	/* twl6030 */
+	int audpwron_gpio;      /* audio power-on gpio */
+	int naudint_irq;        /* audio interrupt */
 };
 
 struct twl4030_platform_data {