On Thursday 19 December 2013 10:03 PM, Tony Lindgren wrote:
Looks good to me, just few minor comments below.
* Balaji T K <balajitk@xxxxxx> [131219 04:40]:
--- /dev/null
+++ b/drivers/regulator/pbias-regulator.c
@@ -0,0 +1,255 @@
+/*
+ * pbias-regulator.c
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Balaji T K <balajitk@xxxxxx>
Maybe use 2013 here instead?
yes
+static int pbias_regulator_enable(struct regulator_dev *rdev)
+{
+ struct pbias_regulator_data *data = rdev_get_drvdata(rdev);
+ const struct pbias_reg_info *info = data->info;
+ int ret;
+
+ ret = regmap_update_bits(data->syscon, data->pbias_reg,
+ info->enable_mask, info->enable);
+
+ return ret;
+}
Do we need need to check the values after enable here? AFAIK setting
the PBIAS voltage change can also fail and that's probably why it has
failure due to mismatch in input voltage, should to be avoided and should
be taken care in s/w by the caller before pbias regulator set voltage/enable.
also the interrupt available.
But interrupt was never used/tested AFAIK, there is some settling time
before the generated interrupt status is truely valid, so pbias interrupt is not
reliable.
+static const struct pbias_reg_info pbias_mmc_omap3 = {
+ .enable = BIT(1),
+ .enable_mask = BIT(1),
+ .vmode = BIT(0),
+ .name = "pbias_mmc_omap3"
+};
+
+static const struct pbias_reg_info pbias_sim_omap3 = {
+ .enable = BIT(9),
+ .enable_mask = BIT(9),
+ .vmode = BIT(8),
+ .name = "pbias_sim_omap3"
+};
+
+static const struct pbias_reg_info pbias_mmc_omap4 = {
+ .enable = BIT(26) | BIT(22),
+ .enable_mask = BIT(26) | BIT(25) | BIT(22),
+ .vmode = BIT(21),
+ .name = "pbias_mmc_omap4"
+};
+
+static const struct pbias_reg_info pbias_mmc_omap5 = {
+ .enable = BIT(27) | BIT(26),
+ .enable_mask = BIT(27) | BIT(25) | BIT(26),
+ .vmode = BIT(21),
+ .name = "pbias_mmc_omap5"
+};
+static struct of_regulator_match pbias_matches[] = {
+ { .name = "pbias_mmc_omap3", .driver_data = (void *)&pbias_mmc_omap3},
+ { .name = "pbias_sim_omap3", .driver_data = (void *)&pbias_sim_omap3},
+ { .name = "pbias_mmc_omap4", .driver_data = (void *)&pbias_mmc_omap4},
+ { .name = "pbias_mmc_omap5", .driver_data = (void *)&pbias_mmc_omap5},
+};
We probably need also pbias_mmc_omap2430 as that regiter mapping is
separate from omap3?
between omap2430 and omap3430, 3460 pbias register address are different,
other than that enable,enable_mask and vmode are
one and the same, so re-used "pbias_mmc_omap3" name and struct pbias_reg_info pbias_mmc_omap3
for omap2430 too, save one entry in of_regulator_match!
If separate name is needed for omap2430, I can add one for 2430,
and reuse the "const struct pbias_reg_info pbias_mmc_omap3" of omap3
since the bit map for enable/disable and voltage configuration will be same.
Then pbias_matches will look like.
>> +static struct of_regulator_match pbias_matches[] = {
>> + { .name = "pbias_mmc_omap2430", .driver_data = (void *)&pbias_mmc_omap3},
>> + { .name = "pbias_mmc_omap3", .driver_data = (void *)&pbias_mmc_omap3},
>> + { .name = "pbias_sim_omap3", .driver_data = (void *)&pbias_sim_omap3},
>> + { .name = "pbias_mmc_omap4", .driver_data = (void *)&pbias_mmc_omap4},
>> + { .name = "pbias_mmc_omap5", .driver_data = (void *)&pbias_mmc_omap5},
>> +};
Let me know if you still think that separate regulator name is needed for 2430,
I can respin this series.
Other than that, good to see this finally happen. This should allow us to
get rid of most of the platform data callbacks for omap_hsmmc.c driver.
Regards,
Tony
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