tps65218/am43xx_evm: Add power framework support to TPS65218

Add in an init function for the drivers/power framework so we can dump
and read the registers via i2c.

Cc: Łukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Tom Rini <trini@ti.com>

board/ti/am43xx/board.c

@@ -19,6 +19,7 @@
 #include <asm/arch/gpio.h>
 #include <asm/emif.h>
 #include "board.h"
+#include <power/pmic.h>
 #include <power/tps65218.h>
 #include <miiphy.h>
 #include <cpsw.h>
@@ -484,6 +485,19 @@ void sdram_init(void)
 }
 #endif
 
+/* setup board specific PMIC */
+int power_init_board(void)
+{
+	struct pmic *p;
+
+	power_tps65218_init(I2C_PMIC);
+	p = pmic_get("TPS65218_PMIC");
+	if (p && !pmic_probe(p))
+		puts("PMIC:  TPS65218\n");
+
+	return 0;
+}
+
 int board_init(void)
 {
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;

drivers/power/pmic/pmic_tps65218.c

@@ -7,6 +7,8 @@
 
 #include <common.h>
 #include <i2c.h>
+#include <asm/errno.h>
+#include <power/pmic.h>
 #include <power/tps65218.h>
 
 /**
@@ -95,3 +97,23 @@ int tps65218_voltage_update(uchar dc_cntrl_reg, uchar volt_sel)
 
 	return 0;
 }
+
+int power_tps65218_init(unsigned char bus)
+{
+	static const char name[] = "TPS65218_PMIC";
+	struct pmic *p = pmic_alloc();
+
+	if (!p) {
+		printf("%s: POWER allocation error!\n", __func__);
+		return -ENOMEM;
+	}
+
+	p->name = name;
+	p->interface = PMIC_I2C;
+	p->number_of_regs = TPS65218_PMIC_NUM_OF_REGS;
+	p->hw.i2c.addr = TPS65218_CHIP_PM;
+	p->hw.i2c.tx_num = 1;
+	p->bus = bus;
+
+	return 0;
+}

include/configs/am43xx_evm.h

@@ -33,6 +33,8 @@
 #define CONFIG_SYS_I2C_MULTI_EEPROMS
 
 /* Power */
+#define CONFIG_POWER
+#define CONFIG_POWER_I2C
 #define CONFIG_POWER_TPS65218
 
 /* SPL defines. */

include/power/tps65218.h

@@ -60,4 +60,5 @@ enum {
 int tps65218_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val,
 		       uchar mask);
 int tps65218_voltage_update(uchar dc_cntrl_reg, uchar volt_sel);
+int power_tps65218_init(unsigned char bus);
 #endif	/* __POWER_TPS65218_H__ */