Hi Henrik,
On Sun, Nov 25, 2012 at 12:39:39PM +0100, Henrik Nordström wrote:
This adds support for AXP209 Power Management controller, used by most sunxi (Allwinner A10/A13) based boards.
From: Henrik Nordstrom henrik@henriknordstrom.net Signed-off-by: Henrik Nordstrom henrik@henriknordstrom.net Signed-off-by: Stefan Roese sr@denx.de
drivers/power/Makefile | 1 + drivers/power/axp209.c | 183 ++++++++++++++++++++++++++++++++++++++++++++++++ include/axp209.h | 29 ++++++++ 3 files changed, 213 insertions(+), 0 deletions(-) create mode 100644 drivers/power/axp209.c create mode 100644 include/axp209.h
diff --git a/drivers/power/Makefile b/drivers/power/Makefile index 8c71901..ad768ff 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -25,6 +25,7 @@ include $(TOPDIR)/config.mk
LIB := $(obj)libpower.o
+COBJS-$(CONFIG_AXP209_POWER) += axp209.o COBJS-$(CONFIG_FTPMU010_POWER) += ftpmu010.o COBJS-$(CONFIG_TPS6586X_POWER) += tps6586x.o COBJS-$(CONFIG_TWL4030_POWER) += twl4030.o diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c new file mode 100644 index 0000000..be98d80 --- /dev/null +++ b/drivers/power/axp209.c @@ -0,0 +1,183 @@ +/*
- (C) Copyright 2012
- Henrik Nordstrom henrik@henriknordstrom.net
- 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 <common.h> +#include <i2c.h> +#include <axp209.h>
+enum axp209_reg {
- AXP209_CHIP_VERSION = 0x3,
- AXP209_DCDC2_VOLTAGE = 0x23,
- AXP209_DCDC3_VOLTAGE = 0x27,
- AXP209_LDO24_VOLTAGE = 0x28,
- AXP209_LDO3_VOLTAGE = 0x29,
- AXP209_SHUTDOWN = 0x32,
+};
+int axp209_write(enum axp209_reg reg, u8 val) +{
- return i2c_write(0x34, reg, 1, &val, 1);
+}
+int axp209_read(enum axp209_reg reg, u8 *val) +{
- return i2c_read(0x34, reg, 1, val, 1);
+}
+int axp209_set_dcdc2(int mvolt) +{
- int cfg = (mvolt - 700) / 25;
- int rc;
- u8 current;
- if (cfg < 0)
cfg = 0;- if (cfg > (1 << 6) - 1)
cfg = (1 << 6) - 1;- /* Do we really need to be this gentle? It has built-in voltage slope */
- while ((rc = axp209_read(AXP209_DCDC2_VOLTAGE, ¤t)) == 0
&& current != cfg) {if (current < cfg)current++;elsecurrent--;rc = axp209_write(AXP209_DCDC2_VOLTAGE, current);if (rc)break;- }
- return rc;
+}
+int axp209_set_dcdc3(int mvolt) +{
- int cfg = (mvolt - 700) / 25;
- u8 reg;
- int rc;
- if (cfg < 0)
cfg = 0;- if (cfg > (1 << 7) - 1)
cfg = (1 << 7) - 1;- rc = axp209_write(AXP209_DCDC3_VOLTAGE, cfg);
- rc |= axp209_read(AXP209_DCDC3_VOLTAGE, ®);
- return rc;
+}
+int axp209_set_ldo2(int mvolt) +{
- int cfg = (mvolt - 1800) / 100;
- int rc;
- u8 reg;
- if (cfg < 0)
cfg = 0;- if (cfg > 15)
cfg = 15;- rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
- if (rc)
return rc;- reg = (reg & 0x0f) | (cfg << 4);
- rc = axp209_write(AXP209_LDO24_VOLTAGE, reg);
- if (rc)
return rc;- return 0;
+}
+int axp209_set_ldo3(int mvolt) +{
- int cfg = (mvolt - 700) / 25;
- if (cfg < 0)
cfg = 0;- if (cfg > 127)
cfg = 127;- if (mvolt == -1)
cfg = 0x80; /* detemined by LDO3IN pin */- return axp209_write(AXP209_LDO3_VOLTAGE, cfg);
+}
+int axp209_set_ldo4(int mvolt) +{
- int cfg = (mvolt - 1800) / 100;
- int rc;
- static const int vindex[] = {
1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,2700, 2800, 3000, 3100, 3200, 3300- };
- u8 reg;
- /* Translate mvolt to register cfg value, requested <= selected */
- for (cfg = 0; mvolt < vindex[cfg] && cfg < 15; cfg++)
;- rc = axp209_read(AXP209_LDO24_VOLTAGE, ®);
- if (rc)
return rc;- /* LDO4 configuration is in lower 4 bits */
- reg = (reg & 0xf0) | (cfg << 0);
- rc = axp209_write(AXP209_LDO24_VOLTAGE, reg);
- if (rc)
return rc;- return 0;
+}
+void axp209_poweroff(void) +{
- u8 val;
- if (axp209_read(AXP209_SHUTDOWN, &val) != 0)
return;- val |= 1 << 7;
- if (axp209_write(AXP209_SHUTDOWN, val) != 0)
return;- udelay(10000); /* wait for power to drain */
+}
+int axp209_init(void) +{
- u8 ver;
- int rc;
- rc = axp209_read(AXP209_CHIP_VERSION, &ver);
- if (rc)
return rc;- if (ver != 0x21)
return -1;- return 0;
+} diff --git a/include/axp209.h b/include/axp209.h new file mode 100644 index 0000000..61338ac --- /dev/null +++ b/include/axp209.h @@ -0,0 +1,29 @@ +/*
- (C) Copyright 2012 Henrik Nordstrom henrik@henriknordstrom.net
- 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
- */
Please add:
#ifndef #define
+extern int axp209_set_dcdc2(int mvolt); +extern int axp209_set_dcdc3(int mvolt); +extern int axp209_set_ldo2(int mvolt); +extern int axp209_set_ldo3(int mvolt); +extern int axp209_set_ldo4(int mvolt); +extern void axp209_poweroff(void); +extern int axp209_init(void);
And end with:
#endif
-- 1.7.7.6
Luka