[U-Boot] [PATCH 2/2] tps65218/am43xx_evm: Add power framework support to TPS65218

[Tom Rini]

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 at samsung.com>
Signed-off-by: Tom Rini <trini at ti.com>

---
This is as far as we can take the framework on this family as in order
to make use of the pmic struct we need malloc.  We need to talk with the
PMIC before we have DDR setup so we don't have a malloc pool.  We can
address this later possibly once an "early malloc" patch is in as part
of device model support.
---
 board/ti/am43xx/board.c            |   14 ++++++++++++++
 drivers/power/pmic/pmic_tps65218.c |   22 ++++++++++++++++++++++
 include/configs/am43xx_evm.h       |    2 ++
 include/power/tps65218.h           |    1 +
 4 files changed, 39 insertions(+)

diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index 71af1ae..eb4e52f 100644
--- a/board/ti/am43xx/board.c
+++ b/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>
@@ -414,6 +415,19 @@ 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;
diff --git a/drivers/power/pmic/pmic_tps65218.c b/drivers/power/pmic/pmic_tps65218.c
index 0952456..dbc7a73 100644
--- a/drivers/power/pmic/pmic_tps65218.c
+++ b/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;
+}
diff --git a/include/configs/am43xx_evm.h b/include/configs/am43xx_evm.h
index 823cba6..71f13e6 100644
--- a/include/configs/am43xx_evm.h
+++ b/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. */
diff --git a/include/power/tps65218.h b/include/power/tps65218.h
index 67aa2f8..f8f33b8 100644
--- a/include/power/tps65218.h
+++ b/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__ */
-- 
1.7.9.5