From: Hou Zhiqiang <zhiqiang....@nxp.com>
Signed-off-by: Hou Zhiqiang <zhiqiang....@nxp.com>
---
board/freescale/common/Makefile | 1 +
board/freescale/common/mc34vr500.c | 95 ++++++++++++++++++++++++++++++++++++++
include/power/mc34vr500_pmic.h | 9 ++++
3 files changed, 105 insertions(+)
create mode 100644 board/freescale/common/mc34vr500.c
diff --git a/board/freescale/common/Makefile b/board/freescale/common/Makefile
index be114ce..eea9514 100644
--- a/board/freescale/common/Makefile
+++ b/board/freescale/common/Makefile
@@ -61,6 +61,7 @@ obj-$(CONFIG_VSC_CROSSBAR) += vsc3316_3308.o
obj-$(CONFIG_IDT8T49N222A) += idt8t49n222a_serdes_clk.o
obj-$(CONFIG_ZM7300) += zm7300.o
obj-$(CONFIG_POWER_PFUZE100) += pfuze.o
+obj-$(CONFIG_POWER_MC34VR500) += mc34vr500.o
obj-$(CONFIG_LS102XA_STREAM_ID) += ls102xa_stream_id.o
diff --git a/board/freescale/common/mc34vr500.c
b/board/freescale/common/mc34vr500.c
new file mode 100644
index 0000000..9c57569
--- /dev/null
+++ b/board/freescale/common/mc34vr500.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ * Hou Zhiqiang <zhiqiang....@freescale.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/mc34vr500_pmic.h>
+
+static uint8_t swxvolt_addr[4] = { MC34VR500_SW1VOLT,
+ MC34VR500_SW2VOLT,
+ MC34VR500_SW3VOLT,
+ MC34VR500_SW4VOLT };
+
+static uint8_t swx_set_point_base[4] = { 13, 9, 9, 9 };
+
+int mc34vr500_get_sw_volt(uint8_t sw)
+{
+ struct pmic *p;
+ u32 swxvolt;
+ uint8_t spb;
+ int sw_volt;
+ int ret;
+
+ debug("%s: Get SW%u volt from swxvolt_addr = 0x%x\n",
+ __func__, sw + 1, swxvolt_addr[sw]);
+ if (sw > SW4) {
+ printf("%s: Unsupported SW(sw%d)\n", __func__, sw + 1);
+ return -EINVAL;
+ }
+
+ p = pmic_get("MC34VR500");
+ if (!p) {
+ printf("%s: Did NOT find PMIC MC34VR500\n", __func__);
+ return -ENODEV;
+ }
+
+ ret = pmic_probe(p);
+ if (ret)
+ return ret;
+
+ ret = pmic_reg_read(p, swxvolt_addr[sw], &swxvolt);
+ if (ret) {
+ printf("%s: Failed to get SW%u volt\n", __func__, sw + 1);
+ return ret;
+ }
+
+ debug("%s: SW%d step point swxvolt = %u\n", __func__, sw + 1, swxvolt);
+ spb = swx_set_point_base[sw];
+ /* The base of SW volt is 625mV and increase by step 25mV */
+ sw_volt = 625 + (swxvolt - spb) * 25;
+
+ debug("%s: SW%u volt = %dmV\n", __func__, sw + 1, sw_volt);
+ return sw_volt;
+}
+
+int mc34vr500_set_sw_volt(uint8_t sw, int sw_volt)
+{
+ struct pmic *p;
+ u32 swxvolt;
+ uint8_t spb;
+ int ret;
+
+ debug("%s: Set SW%u volt to %dmV\n", __func__, sw + 1, sw_volt);
+ /* The least SW volt is 625mV, and only 4 SW outputs */
+ if (sw > SW4 || sw_volt < 625)
+ return -EINVAL;
+
+ p = pmic_get("MC34VR500");
+ if (!p) {
+ printf("%s: Did NOT find PMIC MC34VR500\n", __func__);
+ return -ENODEV;
+ }
+
+ ret = pmic_probe(p);
+ if (ret)
+ return ret;
+
+ spb = swx_set_point_base[sw];
+ /* The base of SW volt is 625mV and increase by step 25mV */
+ swxvolt = (sw_volt - 625) / 25 + spb;
+ debug("%s: SW%d step point swxvolt = %u\n", __func__, sw + 1, swxvolt);
+ if (swxvolt > 63)
+ return -EINVAL;
+
+ ret = pmic_reg_write(p, swxvolt_addr[sw], swxvolt);
+ if (ret)
+ return ret;
+
+ return 0;
+}
diff --git a/include/power/mc34vr500_pmic.h b/include/power/mc34vr500_pmic.h
index df4985a..b0b143a 100644
--- a/include/power/mc34vr500_pmic.h
+++ b/include/power/mc34vr500_pmic.h
@@ -162,5 +162,14 @@ enum {
#define APS_PFM 0xc
#define PWM_PFM 0xd
+enum swx {
+ SW1 = 0,
+ SW2,
+ SW3,
+ SW4,
+};
+
+int mc34vr500_get_sw_volt(uint8_t sw);
+int mc34vr500_set_sw_volt(uint8_t sw, int sw_volt);
int power_mc34vr500_init(unsigned char bus);
#endif /* __MC34VR500_PMIC_H_ */
--
2.1.0.27.g96db324
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