diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/drivers/xpowers/axp209/Kconfig | 15 | ||||
| -rw-r--r-- | src/drivers/xpowers/axp209/Makefile.inc | 7 | ||||
| -rw-r--r-- | src/drivers/xpowers/axp209/axp209.c | 324 | ||||
| -rw-r--r-- | src/drivers/xpowers/axp209/axp209.h | 20 | ||||
| -rw-r--r-- | src/drivers/xpowers/axp209/chip.h | 21 |
5 files changed, 0 insertions, 387 deletions
diff --git a/src/drivers/xpowers/axp209/Kconfig b/src/drivers/xpowers/axp209/Kconfig deleted file mode 100644 index 684873c127..0000000000 --- a/src/drivers/xpowers/axp209/Kconfig +++ /dev/null @@ -1,15 +0,0 @@ -config DRIVER_XPOWERS_AXP209 - bool - default n - help - X-Powers AXP902 Power Management Unit - -if DRIVER_XPOWERS_AXP209 - -config DRIVER_XPOWERS_AXP209_BOOTBLOCK - bool - default n - help - Make AXP209 functionality available in he bootblock. - -endif # DRIVER_XPOWERS_AXP209 diff --git a/src/drivers/xpowers/axp209/Makefile.inc b/src/drivers/xpowers/axp209/Makefile.inc deleted file mode 100644 index e08a8e21a6..0000000000 --- a/src/drivers/xpowers/axp209/Makefile.inc +++ /dev/null @@ -1,7 +0,0 @@ -ifeq ($(CONFIG_DRIVER_XPOWERS_AXP209),y) - -bootblock-$(CONFIG_DRIVER_XPOWERS_AXP209_BOOTBLOCK) += axp209.c -romstage-y += axp209.c -ramstage-y += axp209.c - -endif diff --git a/src/drivers/xpowers/axp209/axp209.c b/src/drivers/xpowers/axp209/axp209.c deleted file mode 100644 index 93e864dff7..0000000000 --- a/src/drivers/xpowers/axp209/axp209.c +++ /dev/null @@ -1,324 +0,0 @@ -/* - * Driver for X-Powers AXP 209 Power Management Unit - * - * Despite axp209_read/write only working on a byte at a time, there is no such - * limitation in the AXP209. - * - * Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> - * Subject to the GNU GPL v2, or (at your option) any later version. - */ - -#include <console/console.h> -#include <device/device.h> -#include <device/i2c_simple.h> -#include <types.h> - -#include "axp209.h" -#include "chip.h" - -/* Hide these definitions from the rest of the source, so keep them here */ -enum registers { - REG_POWER_STATUS = 0x00, - REG_POWER_MODE = 0x01, - REG_OTG_VBUS = 0x02, - REG_CHIP_ID = 0x03, - REG_CHIP_PWROUT_CTL = 0x12, - REG_DCDC2_VOLTAGE = 0x23, - REG_DCDC2_LDO3_CTL = 0x25, - REG_DCDC3_VOLTAGE = 0x27, - REG_LDO24_VOLTAGE = 0x28, - REG_LDO3_VOLTAGE = 0x29, - REG_VBUS_IPSOUT = 0x30, - REG_PWROFF_VOLTAGE = 0x31, - REG_SHTDWN_SETTING = 0x32, -}; - -/* REG_LDO24_VOLTAGE definitions */ -#define REG_LDO24_VOLTAGE_LDO2_MASK (0xf << 4) -#define REG_LDO24_VOLTAGE_LDO2_VAL(x) ((x << 4) & REG_LDO24_VOLTAGE_LDO2_MASK) -#define REG_LDO24_VOLTAGE_LDO4_MASK (0xf << 0) -#define REG_LDO24_VOLTAGE_LDO4_VAL(x) ((x << 0) & REG_LDO24_VOLTAGE_LDO4_MASK) - -/* - * Read and write accessors. We only work on one register at a time, but there - * is no limitation on the AXP209 as to how many registers we may read or write - * in one transaction. - * These return the number of bytes read/written, or an error code. In this - * case, they return 1 on success, or an error code otherwise. This is done to - * work with I2C drivers that return either 0 on success or the number of bytes - * actually transferred. - */ -static int axp209_read(u8 bus, u8 reg, u8 *val) -{ - if (i2c_readb(bus, AXP209_I2C_ADDR, reg, val) < 0) - return CB_ERR; - return 1; -} - -static int axp209_write(u8 bus, u8 reg, u8 val) -{ - if (i2c_writeb(bus, AXP209_I2C_ADDR, reg, val) < 0) - return CB_ERR; - return 1; -} - -/** - * \brief Identify and initialize an AXP209 on the I2C bus - * - * @param[in] bus I2C bus to which the AXP209 is connected - * @return CB_SUCCES on if an AXP209 is found, or an error code otherwise. - */ -enum cb_err axp209_init(u8 bus) -{ - u8 id; - - if (axp209_read(bus, REG_CHIP_ID, &id) != 1) - return CB_ERR; - - /* From U-Boot code : Low 4 bits is chip version */ - if ((id & 0x0f) != 0x1) { - printk(BIOS_ERR, "[axp209] ID 0x%x does not match\n", id); - return CB_ERR; - } - - return CB_SUCCESS; -} - -/** - * \brief Configure the output voltage of DC-DC2 converter - * - * If the requested voltage is not available, the next lowest voltage will - * be applied. - * Valid values are between 700mV and 2275mV - * - * @param[in] millivolts voltage in mV units. - * @param[in] bus I2C bus to which the AXP209 is connected - * @return CB_SUCCES on success, - * CB_ERR_ARG if voltage is out of range, or an error code otherwise. - */ -enum cb_err axp209_set_dcdc2_voltage(u8 bus, u16 millivolts) -{ - u8 val; - - if (millivolts < 700 || millivolts > 2275) - return CB_ERR_ARG; - - val = (millivolts - 700) / 25; - - if (axp209_write(bus, REG_DCDC2_VOLTAGE, val) != 1) - return CB_ERR; - - return CB_SUCCESS; -} - -/** - * \brief Configure the output voltage of DC-DC3 converter - * - * If the requested voltage is not available, the next lowest voltage will - * be applied. - * Valid values are between 700mV and 3500mV - * - * @param[in] millivolts voltage in mV units. - * @param[in] bus I2C bus to which the AXP209 is connected - * @return CB_SUCCES on success, - * CB_ERR_ARG if voltage is out of range, or an error code otherwise. - */ -enum cb_err axp209_set_dcdc3_voltage(u8 bus, u16 millivolts) -{ - u8 val; - - if (millivolts < 700 || millivolts > 3500) - return CB_ERR_ARG; - - val = (millivolts - 700) / 25; - - if (axp209_write(bus, REG_DCDC3_VOLTAGE, val) != 1) - return CB_ERR; - - return CB_SUCCESS; -} - -/** - * \brief Configure the output voltage of LDO2 regulator - * - * If the requested voltage is not available, the next lowest voltage will - * be applied. - * Valid values are between 700mV and 3300mV - * - * @param[in] millivolts voltage in mV units. - * @param[in] bus I2C bus to which the AXP209 is connected - * @return CB_SUCCES on success, - * CB_ERR_ARG if voltage is out of range, or an error code otherwise. - */ -enum cb_err axp209_set_ldo2_voltage(u8 bus, u16 millivolts) -{ - u8 reg8, val; - - if (millivolts < 1800 || millivolts > 3300) - return CB_ERR_ARG; - - /* Try to read the register first, and stop here on error */ - if (axp209_read(bus, REG_LDO24_VOLTAGE, ®8) != 1) - return CB_ERR; - - val = (millivolts - 1800) / 100; - reg8 &= ~REG_LDO24_VOLTAGE_LDO2_MASK; - reg8 |= REG_LDO24_VOLTAGE_LDO2_VAL(val); - - if (axp209_write(bus, REG_LDO24_VOLTAGE, reg8) != 1) - return CB_ERR; - - return CB_SUCCESS; -} - -/** - * \brief Configure the output voltage of LDO4 regulator - * - * If the requested voltage is not available, the next lowest voltage will - * be applied. - * Valid values are between 700mV and 3500mV. Datasheet lists maximum voltage at - * 2250mV, but hardware samples go as high as 3500mV. - * - * @param[in] millivolts voltage in mV units. - * @param[in] bus I2C bus to which the AXP209 is connected - * @return CB_SUCCES on success, - * CB_ERR_ARG if voltage is out of range, or an error code otherwise. - */ -enum cb_err axp209_set_ldo3_voltage(u8 bus, u16 millivolts) -{ - u8 val; - - /* Datasheet lists 2250 max, but PMU will output up to 3500mV */ - if (millivolts < 700 || millivolts > 3500) - return CB_ERR_ARG; - - val = (millivolts - 700) / 25; - - if (axp209_write(bus, REG_LDO3_VOLTAGE, val) != 1) - return CB_ERR; - - return CB_SUCCESS; -} - -/** - * \brief Configure the output voltage of DC-DC2 converter - * - * If the requested voltage is not available, the next lowest voltage will - * be applied. - * Valid values are between 1250V and 3300mV - * - * @param[in] millivolts voltage in mV units. - * @param[in] bus I2C bus to which the AXP209 is connected - * @return CB_SUCCES on success, - * CB_ERR_ARG if voltage is out of range, or an error code otherwise. - */ -enum cb_err axp209_set_ldo4_voltage(u8 bus, u16 millivolts) -{ - u8 reg8, val; - - if (millivolts < 1250 || millivolts > 3300) - return CB_ERR_ARG; - - /* Try to read the register first, and stop here on error */ - if (axp209_read(bus, REG_LDO24_VOLTAGE, ®8) != 1) - return CB_ERR; - - if (millivolts <= 2000) - val = (millivolts - 1200) / 100; - else if (millivolts <= 2700) - val = 9 + (millivolts - 2500) / 100; - else if (millivolts <= 2800) - val = 11; - else - val = 12 + (millivolts - 3000) / 100; - - reg8 &= ~REG_LDO24_VOLTAGE_LDO4_MASK; - reg8 |= REG_LDO24_VOLTAGE_LDO4_VAL(val); - - if (axp209_write(bus, REG_LDO24_VOLTAGE, reg8) != 1) - return CB_ERR; - - return CB_SUCCESS; -} - -static const struct { - enum cb_err (*set_voltage) (u8 bus, u16 mv); - const char *name; -} vtable[] = { { - .set_voltage = axp209_set_dcdc2_voltage, - .name = "DCDC2", - }, { - .set_voltage = axp209_set_dcdc3_voltage, - .name = "DCDC3", - }, { - .set_voltage = axp209_set_ldo2_voltage, - .name = "LDO2", - }, { - .set_voltage = axp209_set_ldo3_voltage, - .name = "LDO3", - }, { - .set_voltage = axp209_set_ldo4_voltage, - .name = "LDO4", - } -}; - -static enum cb_err set_rail(u8 bus, int idx, u16 mv) -{ - enum cb_err err; - const char *name = vtable[idx].name; - - /* If voltage isn't specified, don't touch the rail */ - if (mv == 0) { - printk(BIOS_DEBUG, "[axp209] Skipping %s configuration\n", - name); - return CB_SUCCESS; - } - - if ((err = vtable[idx].set_voltage(bus, mv) != CB_SUCCESS)) { - printk(BIOS_ERR, "[axp209] Failed to set %s to %u mv\n", - name, mv); - return err; - } - - return CB_SUCCESS; -} - -/** - * \brief Configure all voltage rails - * - * Configure all converters and regulators from devicetree config. If any of the - * voltages are not declared (i.e. are zero), the respective rail will not be - * reconfigured, and retain its powerup voltage. - * - * @param[in] cfg pointer to @ref drivers_xpowers_axp209_config structure - * @param[in] bus I2C bus to which the AXP209 is connected - * @return CB_SUCCES on success, or an error code otherwise. - */ -enum cb_err axp209_set_voltages(u8 bus, const struct - drivers_xpowers_axp209_config *cfg) -{ - enum cb_err err; - - /* Don't worry about what the error is. Console prints that */ - err = set_rail(bus, 0, cfg->dcdc2_voltage_mv); - err |= set_rail(bus, 1, cfg->dcdc3_voltage_mv); - err |= set_rail(bus, 2, cfg->ldo2_voltage_mv); - err |= set_rail(bus, 3, cfg->ldo3_voltage_mv); - err |= set_rail(bus, 4, cfg->ldo4_voltage_mv); - - if (err != CB_SUCCESS) - return CB_ERR; - - return CB_SUCCESS; -} - -/* - * Usually, the AXP209 is enabled and configured in romstage, so there is no - * need for a full ramstage driver. Hence .enable_dev is NULL. - */ -#ifndef __PRE_RAM__ -struct chip_operations drivers_xpowers_axp209_config = { - CHIP_NAME("X-Powers AXP 209 Power Management Unit") - .enable_dev = NULL, -}; -#endif /* __PRE_RAM__ */ diff --git a/src/drivers/xpowers/axp209/axp209.h b/src/drivers/xpowers/axp209/axp209.h deleted file mode 100644 index c9cdd7efba..0000000000 --- a/src/drivers/xpowers/axp209/axp209.h +++ /dev/null @@ -1,20 +0,0 @@ -/* - * Definitions for X-Powers AXP 209 Power Management Unit - * - * Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> - * Subject to the GNU GPL v2, or (at your option) any later version. - */ - -#include <types.h> -#include "chip.h" - -#define AXP209_I2C_ADDR (0x68 >> 1) - -enum cb_err axp209_init(u8 bus); -enum cb_err axp209_set_dcdc2_voltage(u8 bus, u16 millivolts); -enum cb_err axp209_set_dcdc3_voltage(u8 bus, u16 millivolts); -enum cb_err axp209_set_ldo2_voltage(u8 bus, u16 millivolts); -enum cb_err axp209_set_ldo3_voltage(u8 bus, u16 millivolts); -enum cb_err axp209_set_ldo4_voltage(u8 bus, u16 millivolts); -enum cb_err axp209_set_voltages(u8 bus, const struct - drivers_xpowers_axp209_config *cfg); diff --git a/src/drivers/xpowers/axp209/chip.h b/src/drivers/xpowers/axp209/chip.h deleted file mode 100644 index c19253d6b5..0000000000 --- a/src/drivers/xpowers/axp209/chip.h +++ /dev/null @@ -1,21 +0,0 @@ -/* - * X-Powers AXP 209 devicetree.cb interface - * - * Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com> - * Subject to the GNU GPL v2, or (at your option) any later version. - */ - -#ifndef AXP209_CHIP_H -#define AXP209_CHIP_H - -#include <types.h> - -struct drivers_xpowers_axp209_config { - u16 dcdc2_voltage_mv; /**< DCDC2 converter voltage output */ - u16 dcdc3_voltage_mv; /**< DCDC3 converter voltage output */ - u16 ldo2_voltage_mv; /**< LDO2 regulator voltage output */ - u16 ldo3_voltage_mv; /**< LDO3 regulator voltage output */ - u16 ldo4_voltage_mv; /**< LDO4 regulator voltage output */ -}; - -#endif /* AXP209_CHIP_H */ |