From 33234e791de2ac3ea915158e042907748191cabd Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 27 Nov 2012 10:24:33 +0800 Subject: regulator: core: Allow specific minimal selector for starting linear mapping Some drivers (at least 3 drivers) have such variant of linear mapping that the first few selectors are invalid and the reset are linear mapping. Let's support this case in core. This patch adds linear_min_sel in struct regulator_desc, so we can allow specific minimal selector for starting linear mapping. Then extends regulator_[map|list]_voltage_linear() to support this feature. Note that for selectors less than min_linear_index, we need count them to n_voltages so regulator_list_voltage() won't fail while checking the boundary for selector before calling list_voltage callback. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/regulator/driver.h') diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 7932a3bf21bd..d9ce98a5028b 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -185,6 +185,7 @@ enum regulator_type { * * @min_uV: Voltage given by the lowest selector (if linear mapping) * @uV_step: Voltage increase with each selector (if linear mapping) + * @linear_min_sel: Minimal selector for starting linear mapping * @ramp_delay: Time to settle down after voltage change (unit: uV/us) * @volt_table: Voltage mapping table (if table based mapping) * @@ -207,6 +208,7 @@ struct regulator_desc { unsigned int min_uV; unsigned int uV_step; + unsigned int linear_min_sel; unsigned int ramp_delay; const unsigned int *volt_table; -- cgit v1.2.3