From: Axel Lin Date: Fri, 30 Aug 2013 10:06:06 +0000 (+0800) Subject: regulator: tps65217: Convert to use linear ranges X-Git-Tag: v3.12-rc1~191^2~10^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6290d60656e9f4f5a0071bafa798370ab35978a0;p=pandora-kernel.git 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 Signed-off-by: Mark Brown --- Reading git-diff-tree failed