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Commit Graph

19 Commits

Author SHA1 Message Date
Axel Lin
6290d60656 regulator: tps65217: Convert to use linear ranges
Below is the equation in original code:

tps65217_uv1_ranges:
        0  ... 24: uV = vsel * 25000 + 900000;
        25 ... 52: uV = (vsel - 24) * 50000 + 1500000;
                      = (vsel - 25) * 50000 + 1550000;
        53 ... 55: uV = (vsel - 52) * 100000 + 2900000;
                      = (vsel - 53) * 100000 + 3000000;
        56 ... 62: uV = 3300000;

tps65217_uv2_ranges:
        0  ...  8: uV = vsel * 50000 + 1500000;
        9  ... 13: uV = (vsel - 8) * 100000 + 1900000;
                      = (vsel - 9) * 100000 + 2000000;
        14 ... 31: uV = (vsel - 13) * 50000 + 2400000;
                      = (vsel - 14) * 50000 + 2450000;

The voltage tables are composed of linear ranges.
This patch converts this driver to use multiple linear ranges APIs.

In original code, voltage range for DCDC1 is 900000 ~ 1800000 and voltage range
for DCDC3 is 900000 ~ 1500000.  This patch separates the range 25~52 in
tps65217_uv1_ranges table to two linear ranges: 25~30 and 31~52.
This change makes it possible to reuse the same linear_ranges table for DCDCx.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-30 15:26:03 +01:00
Axel Lin
405c54009c regulator: Remove all platform_set_drvdata(pdev, NULL) in drivers
Since 0998d06310 "device-core: Ensure drvdata = NULL when no driver is bound",
this is done by driver core after device_release or on probe failure.
Thus we can remove all platform_set_drvdata(pdev, NULL) in drivers.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-05-12 18:34:12 +04:00
Axel Lin
5bce833c44 regulator: tps65217: Fix using wrong dev argument for calling of_regulator_match
The dev parameter is the device requestiong the data.
In this case it should be &pdev->dev rather than pdev->dev.parent.

The dev parameter is used to call devm_kzalloc in of_get_regulator_init_data(),
which means this fixes a memory leak because the memory is allocated every time
probe() is called, thus it should be freed when this driver is unloaded.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-01-24 18:58:33 +08:00
Bill Pemberton
8dc995f56e regulator: remove use of __devexit
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-20 10:53:38 +09:00
Bill Pemberton
a5023574d1 regulator: remove use of __devinit
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-20 10:31:26 +09:00
Bill Pemberton
5eb9f2b963 regulator: remove use of __devexit_p
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-11-20 10:31:19 +09:00
AnilKumar Ch
1922b0f275 mfd: Move tps65217 regulator plat data handling to regulator
Regulator platform data handling was mistakenly added to MFD
driver. So we will see build errors if we compile MFD drivers
without CONFIG_REGULATOR. This patch moves regulator platform
data handling from TPS65217 MFD driver to regulator driver.

This makes MFD driver independent of REGULATOR framework so
build error is fixed if CONFIG_REGULATOR is not set.

drivers/built-in.o: In function `tps65217_probe':
tps65217.c:(.devinit.text+0x13e37): undefined reference
to `of_regulator_match'

This patch also fix allocation size of tps65217 platform data.
Current implementation allocates a struct tps65217_board for each
regulator specified in the device tree. But the structure itself
provides array of regulators so one instance of it is sufficient.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
2012-08-22 10:55:25 +02:00
AnilKumar Ch
a7f1b63eb8 regulator: tps65217: Add device tree support
This commit adds device tree support for tps65217 pmic. And usage
details are added to device tree documentation. Driver is tested
by using kernel module with regulator set and get APIs.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-12 18:27:36 +01:00
Axel Lin
844e6901df regulator: tps65217: Fix voltage boundary checking in tps65217_pmic_map_voltage
It is ok to request voltage with min_uV < tps->info[rid]->min_uV and
max_uV > tps->info[rid]->max_uV.

The equation we used in uv_to_vsel() does not allow
min_uV < tps->info[rid]->min_uV, otherwise it returns negative selector.
So we need to set min_uV = tps->info[rid]->min_uV if
min_uV < tps->info[rid]->min_uV.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-03 20:18:34 +01:00
Alan Cox
1a5d39d064 regulator: tps65217: invalid if check
This permits the setting of bogus values because the invalidity check is
itself invalid.

Reported-by: dcb314@hotmail.com
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-02 18:26:04 +01:00
Axel Lin
d172f319c1 regulator: tps65217: Convert LDO1 to use regulator_list_voltage_table
Convert tps65217_pmic_ldo1_ops to use regulator_list_voltage_table.

We have n_voltages and volt_table settings in regulator_desc,
so we don't need the table and table_len fields in struct tps_info.
Thus remove them from struct tps_info.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-07-01 19:12:58 +01:00
Axel Lin
b4bc9ef625 regulator: tps65217: Convert to regulator_[is_enabled|get_voltage_sel]_regmap
This patch converts .is_enabled and .get_voltage_sel to
regulator_is_enabled_regmap and regulator_get_voltage_sel_regmap.

For .enable, .disable, and .set_voltage_sel, the write protect level is either
1 or 2. So we cannot use regulator_[enable|disable|set_voltage_sel]_regmap.

Now we store the enable reg/mask and vsel reg/mask in regulator_desc,
so we can remove enable_mask, set_vout_reg, and set_vout_mask from
struct tps_info.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-13 18:57:56 +01:00
Axel Lin
8b22285fd7 regulator: tps65217: Convert to set_voltage_sel and map_voltage
Convert tps65217_pmic_ops to use set_voltage_sel and map_voltage.
After this convertion, we can also use tps65217_pmic_set_voltage_sel()
for set_voltage_sel callback of tps65217_pmic_ldo1_ops.
Thus this patch also removes tps65217_pmic_ldo1_set_voltage_sel() function.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-18 08:38:32 +01:00
Mark Brown
c172708d38 regulator: core: Use a struct to pass in regulator runtime configuration
Rather than adding new arguments to regulator_register() every time we
want to add a new bit of dynamic information at runtime change the function
to take these via a struct. By doing this we avoid needing to do further
changes like the recent addition of device tree support which required each
regulator driver to be updated to take an additional parameter.

The regulator_desc which should (mostly) be static data is still passed
separately as most drivers are able to configure this statically at build
time.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-09 12:37:09 +01:00
Axel Lin
78637a3d8c regulator: tps65217: Constify regulator_desc
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-06 10:07:03 +01:00
Axel Lin
fc56911bc6 regulator: Merge tps65217_pmic_ldo234_ops and tps65217_pmic_dcdc_ops to tps65217_pmic_ops
Most callback functions implementation for tps65217_pmic_ldo234_ops and
tps65217_pmic_dcdc_ops are the same except the rid range checking.

This patch uses tps65217_pmic_ops for all DCDCx, LDO2, LDO3, and LDO4.
And rework tps65217_pmic_set_voltage to make it can be called for
DCDCx, LDO2, LDO3, and LDO4.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-03-12 10:50:46 +00:00
Axel Lin
2fe4e0259d regulator: tps65217: Use DIV_ROUND_UP macro to calculate selector
Use DIV_ROUND_UP macro for better readability.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-03-11 20:48:52 +00:00
Axel Lin
b683d980d8 regulator: Update tps65217-regulator for DT changes
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-20 12:01:33 +00:00
AnilKumar Ch
a493077f18 regulator: tps65217: Add tps65217 regulator driver
This patch adds tps65217 PMIC as a regulator

The regulator module consists of 3 DCDCs and 4 LDOs. The output
voltages are configurable and are meant to supply power to the
main processor and other components

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-01-20 12:01:31 +00:00