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ARM: at91sam9m10g45ek: add mmc environment configuration support
[karo-tx-uboot.git] / drivers / power / power_fsl.c
1 /*
2  *  Copyright (C) 2011 Samsung Electronics
3  *  Lukasz Majewski <l.majewski@samsung.com>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <spi.h>
10 #include <power/pmic.h>
11 #include <fsl_pmic.h>
12 #include <errno.h>
13
14 #if defined(CONFIG_PMIC_FSL_MC13892)
15 #define FSL_PMIC_I2C_LENGTH     3
16 #elif defined(CONFIG_PMIC_FSL_MC34704)
17 #define FSL_PMIC_I2C_LENGTH     1
18 #endif
19
20 #if defined(CONFIG_POWER_SPI)
21 static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
22 {
23         return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
24 }
25 #endif
26
27 int pmic_init(unsigned char bus)
28 {
29         static const char name[] = "FSL_PMIC";
30         struct pmic *p = pmic_alloc();
31
32         if (!p) {
33                 printf("%s: POWER allocation error!\n", __func__);
34                 return -ENOMEM;
35         }
36
37         p->name = name;
38         p->number_of_regs = PMIC_NUM_OF_REGS;
39         p->bus = bus;
40
41 #if defined(CONFIG_POWER_SPI)
42         p->interface = PMIC_SPI;
43         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;
49 #elif defined(CONFIG_POWER_I2C)
50         p->interface = PMIC_I2C;
51         p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
52         p->hw.i2c.tx_num = FSL_PMIC_I2C_LENGTH;
53 #else
54 #error "You must select CONFIG_POWER_SPI or CONFIG_PMIC_I2C"
55 #endif
56
57         return 0;
58 }