Added SPI driver for the Power Management Controller used with i.MX51 Processor.
Signed-off-by: Stefano Babic <[email protected]> --- drivers/misc/Makefile | 1 + drivers/misc/mc13892_spi_pmic.c | 134 +++++++++++++++++++++++++++++++++++ include/mc13892.h | 149 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 284 insertions(+), 0 deletions(-) create mode 100644 drivers/misc/mc13892_spi_pmic.c create mode 100644 include/mc13892.h diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index f6df60f..5847262 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -31,6 +31,7 @@ COBJS-$(CONFIG_FSL_LAW) += fsl_law.o COBJS-$(CONFIG_NS87308) += ns87308.o COBJS-$(CONFIG_STATUS_LED) += status_led.o COBJS-$(CONFIG_TWL4030_LED) += twl4030_led.o +COBJS-$(CONFIG_MC13892_SPI_PMIC) += mc13892_spi_pmic.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/misc/mc13892_spi_pmic.c b/drivers/misc/mc13892_spi_pmic.c new file mode 100644 index 0000000..f095fcc --- /dev/null +++ b/drivers/misc/mc13892_spi_pmic.c @@ -0,0 +1,134 @@ +/* + * (C) Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <config.h> +#include <common.h> +#include <spi.h> +#include <asm/errno.h> +#include <linux/types.h> + +u32 mc13892_reg(struct spi_slave *slave, u32 reg, u32 val, u32 write) +{ + char tx[4]; + char rx[4]; + int i; + u32 tmp, pmic_tx, pmic_rx; + + if (!slave) + return 0; + + if (reg > 63 || write > 1) { + printf("<reg num> = %d is invalid. Should be less then 63\n", + reg); + return 0; + } + pmic_tx = (write << 31) | (reg << 25) | (val & 0x00FFFFFF); + debug("reg=0x%x, val=0x%08x\n", reg, pmic_tx); + + tmp = pmic_tx; + for (i = 0; i < 4; i++) { + tx[i] = (tmp & 0xFF000000) >> 24; + tmp <<= 8; + } + + if (spi_xfer(slave, 4 << 3, tx, rx, + SPI_XFER_BEGIN | SPI_XFER_END)) { + return -1; + } + + if (write) { + tx[0] &= ~(1 << 31); + if (spi_xfer(slave, 4 << 3, tx, rx, + SPI_XFER_BEGIN | SPI_XFER_END)) { + return -1; + } + } + + pmic_rx = (rx[0] << 24) | (rx[1] << 16) | (rx[2] << 8) | rx[3]; + debug("reg=0x%x, val_read=0x%08x 0x%x 0x%x 0x%x 0x%x\n", + reg, pmic_rx, rx[0], rx[1], rx[2], rx[3]); + return pmic_rx; +} + +void mc13892_show_pmic_info(struct spi_slave *slave) +{ + volatile u32 rev_id; + + if (!slave) + return; + + rev_id = mc13892_reg(slave, 7, 0, 0); + debug("PMIC ID: 0x%08x [Rev: ", rev_id); + switch (rev_id & 0x1F) { + case 0x1: + puts("1.0"); + break; + case 0x9: + puts("1.1"); + break; + case 0xA: + puts("1.2"); + break; + case 0x10: + puts("2.0"); + break; + case 0x11: + puts("2.1"); + break; + case 0x18: + puts("3.0"); + break; + case 0x19: + puts("3.1"); + break; + case 0x1A: + puts("3.2"); + break; + case 0x2: + puts("3.2A"); + break; + case 0x1B: + puts("3.3"); + break; + case 0x1D: + puts("3.5"); + break; + default: + puts("unknown"); + break; + } + puts("]\n"); +} + +struct spi_slave *mc13892_spi_probe(void) +{ + return spi_setup_slave(CONFIG_MC13892_SPI_PMIC_BUS, + CONFIG_MC13892_SPI_PMIC_CS, + CONFIG_MC13892_SPI_PMIC_CLK, + CONFIG_MC13892_SPI_PMIC_MODE); +} + +void mc13892_spi_free(struct spi_slave *slave) +{ + if (slave) + spi_free_slave(slave); +} diff --git a/include/mc13892.h b/include/mc13892.h new file mode 100644 index 0000000..b57e07b --- /dev/null +++ b/include/mc13892.h @@ -0,0 +1,149 @@ +/* + * (C) Copyright 2010 + * Stefano Babic, DENX Software Engineering, [email protected]. + * + * (C) Copyright 2009 Freescale Semiconductor, Inc. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __MC13892_H__ +#define __MC13892_H__ + +enum { + MC13892_REG_INT_STATUS0 = 0, + MC13892_REG_INT_MASK0, + MC13892_REG_INT_SENSE0, + MC13892_REG_INT_STATUS1, + MC13892_REG_INT_MASK1, + MC13892_REG_INT_SENSE1, + MC13892_REG_PU_MODE_S, + MC13892_REG_IDENTIFICATION, + MC13892_REG_UNUSED0, + MC13892_REG_ACC0, + MC13892_REG_ACC1, /*10 */ + MC13892_REG_UNUSED1, + MC13892_REG_UNUSED2, + MC13892_REG_POWER_CTL0, + MC13892_REG_POWER_CTL1, + MC13892_REG_POWER_CTL2, + MC13892_REG_REGEN_ASSIGN, + MC13892_REG_UNUSED3, + MC13892_REG_MEM_A, + MC13892_REG_MEM_B, + MC13892_REG_RTC_TIME, /*20 */ + MC13892_REG_RTC_ALARM, + MC13892_REG_RTC_DAY, + MC13892_REG_RTC_DAY_ALARM, + MC13892_REG_SW_0, + MC13892_REG_SW_1, + MC13892_REG_SW_2, + MC13892_REG_SW_3, + MC13892_REG_SW_4, + MC13892_REG_SW_5, + MC13892_REG_SETTING_0, /*30 */ + MC13892_REG_SETTING_1, + MC13892_REG_MODE_0, + MC13892_REG_MODE_1, + MC13892_REG_POWER_MISC, + MC13892_REG_UNUSED4, + MC13892_REG_UNUSED5, + MC13892_REG_UNUSED6, + MC13892_REG_UNUSED7, + MC13892_REG_UNUSED8, + MC13892_REG_UNUSED9, /*40 */ + MC13892_REG_UNUSED10, + MC13892_REG_UNUSED11, + MC13892_REG_ADC0, + MC13892_REG_ADC1, + MC13892_REG_ADC2, + MC13892_REG_ADC3, + MC13892_REG_ADC4, + MC13892_REG_CHARGE, + MC13892_REG_USB0, + MC13892_REG_USB1, /*50 */ + MC13892_REG_LED_CTL0, + MC13892_REG_LED_CTL1, + MC13892_REG_LED_CTL2, + MC13892_REG_LED_CTL3, + MC13892_REG_UNUSED12, + MC13892_REG_UNUSED13, + MC13892_REG_TRIM0, + MC13892_REG_TRIM1, + MC13892_REG_TEST0, + MC13892_REG_TEST1, /*60 */ + MC13892_REG_TEST2, + MC13892_REG_TEST3, + MC13892_REG_TEST4, +}; + +/* MC13892_REG_POWER_MISC */ + +#define PWGT1SPIEN (1 << 15) +#define PWGT2SPIEN (1 << 16) +#define PWUP (1 << 25) + +/* MC13892_REG_CHARGE */ + +#define VCHRG0 0 +#define VCHRG1 (1 << 1) +#define VCHRG2 (1 << 2) +#define ICHRG0 (1 << 3) +#define ICHRG1 (1 << 4) +#define ICHRG2 (1 << 5) +#define ICHRG3 (1 << 6) +#define ICHRGTR0 (1 << 7) +#define ICHRGTR1 (1 << 8) +#define ICHRGTR2 (1 << 9) +#define FETOVRD (1 << 10) +#define FETCTRL (1 << 11) +#define RVRSMODE (1 << 13) +#define OVCTRL0 (1 << 15) +#define OVCTRL1 (1 << 16) +#define UCHEN (1 << 17) +#define CHRGLEDEN (1 << 18) +#define CHRGRAWPDEN (1 << 19) + +/* MC13892_REG_SETTING_0/1 */ +#define VO_1_20V 0 +#define VO_1_30V 1 +#define VO_1_50V 2 +#define VO_1_80V 3 +#define VO_1_10V 4 +#define VO_2_00V 5 +#define VO_2_77V 6 +#define VO_2_40V 7 + +#define VIOL 0 +#define VDIG 4 +#define VGEN 6 + +#define mc13892_reg_write(slave, reg, value) mc13892_reg(slave, reg, value, 1) +#define mc13892_reg_read(slave, reg) mc13892_reg(slave, reg, 0, 0) + +#define set_mc13892_regulator(slave, reg, field, value) do { \ + mc13892_reg_write(slave, reg, (value << field)) \ + } while (0) + +struct spi_slave *mc13892_spi_probe(void); +void mc13892_spi_free(struct spi_slave *slave); +u32 mc13892_reg(struct spi_slave *slave, u32 reg, u32 val, u32 write); +void mc13892_show_pmic_info(struct spi_slave *slave); + +#endif -- 1.6.3.3 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
