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Stefano Babicb2e5add2011-10-05 12:38:27 +02001/*
2 * Copyright (C) 2011 Samsung Electronics
3 * Lukasz Majewski <l.majewski@samsung.com>
4 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Stefano Babicb2e5add2011-10-05 12:38:27 +02006 */
7
8#include <common.h>
9#include <spi.h>
Łukasz Majewskic7336812012-11-13 03:21:55 +000010#include <power/pmic.h>
Stefano Babicb2e5add2011-10-05 12:38:27 +020011#include <fsl_pmic.h>
Łukasz Majewskic7336812012-11-13 03:21:55 +000012#include <errno.h>
Stefano Babicb2e5add2011-10-05 12:38:27 +020013
Fabio Estevam4cfc6c42012-10-23 06:34:50 +000014#if defined(CONFIG_PMIC_FSL_MC13892)
15#define FSL_PMIC_I2C_LENGTH 3
Fabio Estevam787f4f32012-10-23 06:36:18 +000016#elif defined(CONFIG_PMIC_FSL_MC34704)
17#define FSL_PMIC_I2C_LENGTH 1
Fabio Estevam4cfc6c42012-10-23 06:34:50 +000018#endif
19
Łukasz Majewskibe3b51a2012-11-13 03:22:14 +000020#if defined(CONFIG_POWER_SPI)
Stefano Babicb2e5add2011-10-05 12:38:27 +020021static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
22{
Helmut Raiger435a7282011-10-19 20:34:43 +000023 return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
Stefano Babicb2e5add2011-10-05 12:38:27 +020024}
Stefano Babicb7b7d3c2011-10-06 21:06:39 +020025#endif
Stefano Babicb2e5add2011-10-05 12:38:27 +020026
Łukasz Majewskic7336812012-11-13 03:21:55 +000027int pmic_init(unsigned char bus)
Stefano Babicb2e5add2011-10-05 12:38:27 +020028{
Stefano Babicb2e5add2011-10-05 12:38:27 +020029 static const char name[] = "FSL_PMIC";
Łukasz Majewskic7336812012-11-13 03:21:55 +000030 struct pmic *p = pmic_alloc();
31
32 if (!p) {
33 printf("%s: POWER allocation error!\n", __func__);
34 return -ENOMEM;
35 }
Stefano Babicb2e5add2011-10-05 12:38:27 +020036
Stefano Babicb2e5add2011-10-05 12:38:27 +020037 p->name = name;
Stefano Babicb2e5add2011-10-05 12:38:27 +020038 p->number_of_regs = PMIC_NUM_OF_REGS;
Fabio Estevam839f4d42013-11-20 20:26:06 -020039 p->bus = bus;
Stefano Babicb2e5add2011-10-05 12:38:27 +020040
Łukasz Majewskibe3b51a2012-11-13 03:22:14 +000041#if defined(CONFIG_POWER_SPI)
Stefano Babicb7b7d3c2011-10-06 21:06:39 +020042 p->interface = PMIC_SPI;
Stefano Babicb2e5add2011-10-05 12:38:27 +020043 p->hw.spi.cs = CONFIG_FSL_PMIC_CS;
44 p->hw.spi.clk = CONFIG_FSL_PMIC_CLK;
45 p->hw.spi.mode = CONFIG_FSL_PMIC_MODE;
46 p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN;
47 p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END;
48 p->hw.spi.prepare_tx = pmic_spi_prepare_tx;
Łukasz Majewskibe3b51a2012-11-13 03:22:14 +000049#elif defined(CONFIG_POWER_I2C)
Stefano Babicb7b7d3c2011-10-06 21:06:39 +020050 p->interface = PMIC_I2C;
51 p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
Fabio Estevam4cfc6c42012-10-23 06:34:50 +000052 p->hw.i2c.tx_num = FSL_PMIC_I2C_LENGTH;
Stefano Babicb7b7d3c2011-10-06 21:06:39 +020053#else
Łukasz Majewskibe3b51a2012-11-13 03:22:14 +000054#error "You must select CONFIG_POWER_SPI or CONFIG_PMIC_I2C"
Stefano Babicb7b7d3c2011-10-06 21:06:39 +020055#endif
Stefano Babicb2e5add2011-10-05 12:38:27 +020056
57 return 0;
58}