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path: root/drivers/regulator/lp3971.c
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* lp3971: Fix BUCK_VOL_CHANGE_SHIFT logicAxel Lin2010-03-22
| | | | | | | | | | | Given x=0,1,2, current implementation of BUCK_VOL_CHANGE_SHIFT(x) returns 0,4,8. The correct return value should be 0,4,6. This patch fix the logic. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* lp3971: Fix setting val for LDO2 and LDO4Axel Lin2010-03-22
| | | | | | | | | | | In lp3971_ldo_set_voltage function, it requires val to left shift 4 bits for LDO2 and LDO4. This patch fix this issue. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator: handle kcalloc() failureDan Carpenter2010-03-22
| | | | | | | | | Return -ENOMEM if kcalloc() fails Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* Regulators: lp3971 - fail if platform data was not suppliedDmitry Torokhov2010-03-03
| | | | | | | | | | | | | There is no point in completing probe if platform data is missing so let's abort loading early. Also, use kcalloc when allocating several instances of the same data structure and mark setup_regulators() as __devinit since it is only called from lp3971_i2c_probe() which is __devinit. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator/lp3971: Storage class should be before const qualifierTobias Klauser2010-03-03
| | | | | | | | | | | | The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator/lp3971: vol_map out of bounds in lp3971_{ldo,dcdc}_set_voltage()Roel Kluin2010-02-12
| | | | | | | | | | | | After `for (val = LDO_VOL_MIN_IDX; val <= LDO_VOL_MAX_IDX; val++)', if no break occurs, val reaches LDO_VOL_MIN_IDX + 1, which is out of bounds for ldo45_voltage_map[] and ldo123_voltage_map[]. Similarly BUCK_TARGET_VOL_MAX_IDX + 1 is out of bounds for buck_voltage_map[]. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* drivers/regulator: use PTR_ERR to get error codeJulia Lawall2009-12-17
| | | | | | | | | | | | | | | | | | | | | | | IS_ERR returns only 1 or 0. The callsite of setup_regulators expects a negative integer in an error case. Thus, PTR_ERR has to be used to extract it. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression E,E1; @@ *E = IS_ERR(...) ... when != E = E1 *return E; // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator/lp3971: drop unnecessary initializationWolfram Sang2009-09-22
| | | | | | Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* regulator: lp3971 - fix driver link error when built-in.Liam Girdwood2009-06-15
| | | | | | | lp3971_i2c_remove' referenced in section `.data' of drivers/built-in.o: defined in discarded section `.devexit.text' of drivers/built-in.o Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
* LP3971 PMIC regulator driver (updated and combined version)Marek Szyprowski2009-06-15
This patch adds regulator drivers for National Semiconductors LP3971 PMIC. This LP3971 PMIC controller has 3 DC/DC voltage converters and 5 low drop-out (LDO) regulators. LP3971 PMIC controller uses I2C interface. Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>