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Date: Fri, 11 Dec 2009 09:53:51 +0200
From: Juha Keski-Saari <ext-juha.1.keski-saari@...ia.com>
To: lrg@...mlogic.co.uk, broonie@...nsource.wolfsonmicro.com,
dbrownell@...rs.sourceforge.net, sameo@...ux.intel.com,
linux-kernel@...r.kernel.org
Cc: peter.de-schrijver@...ia.com, eduardo.valentin@...ia.com,
ext-juha.1.keski-saari@...ia.com
Subject: [PATCH 1/1] twl4030-regulator: extend twlreg_info to contain turnon delay and remap
Extend the twlreg_info structure to hold the turnon delay and remap config
value for regulators, and implement turnon delay in reg_enable
Signed-off-by: Juha Keski-Saari <ext-juha.1.keski-saari@...ia.com>
---
drivers/regulator/twl4030-regulator.c | 63 ++++++++++++++++++---------------
1 files changed, 34 insertions(+), 29 deletions(-)
diff --git a/drivers/regulator/twl4030-regulator.c b/drivers/regulator/twl4030-regulator.c
index 477c965..a0e43f3 100644
--- a/drivers/regulator/twl4030-regulator.c
+++ b/drivers/regulator/twl4030-regulator.c
@@ -12,6 +12,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
+#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
@@ -43,6 +44,12 @@ struct twlreg_info {
/* chip constraints on regulator behavior */
u16 min_mV;
+ /* regulator specific turn-on delay */
+ u16 delay;
+
+ /* stte REMAP default configuration */
+ u8 remap;
+
/* used by regulator core */
struct regulator_desc desc;
};
@@ -108,13 +115,18 @@ static int twl4030reg_enable(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int grp;
+ int ret;
grp = twl4030reg_read(info, VREG_GRP);
if (grp < 0)
return grp;
grp |= P1_GRP;
- return twl4030reg_write(info, VREG_GRP, grp);
+ ret = twl4030reg_write(info, VREG_GRP, grp);
+
+ udelay(info->delay);
+
+ return ret;
}
static int twl4030reg_disable(struct regulator_dev *rdev)
@@ -401,36 +413,29 @@ static struct regulator_ops twl4030fixed_ops = {
* software control over them after boot.
*/
static struct twlreg_info twl4030_regs[] = {
- TWL_ADJUSTABLE_LDO(VAUX1, 0x17, 1),
- TWL_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2),
- TWL_ADJUSTABLE_LDO(VAUX2, 0x1b, 2),
- TWL_ADJUSTABLE_LDO(VAUX3, 0x1f, 3),
- TWL_ADJUSTABLE_LDO(VAUX4, 0x23, 4),
- TWL_ADJUSTABLE_LDO(VMMC1, 0x27, 5),
- TWL_ADJUSTABLE_LDO(VMMC2, 0x2b, 6),
- TWL_ADJUSTABLE_LDO(VPLL1, 0x2f, 7),
- TWL_ADJUSTABLE_LDO(VPLL2, 0x33, 8),
- TWL_ADJUSTABLE_LDO(VSIM, 0x37, 9),
- TWL_ADJUSTABLE_LDO(VDAC, 0x3b, 10),
- TWL_FIXED_LDO(VINTANA1, 0x3f, 1500, 11),
- TWL_ADJUSTABLE_LDO(VINTANA2, 0x43, 12),
- TWL_FIXED_LDO(VINTDIG, 0x47, 1500, 13),
- TWL_ADJUSTABLE_LDO(VIO, 0x4b, 14),
- TWL_ADJUSTABLE_LDO(VDD1, 0x55, 15),
- TWL_ADJUSTABLE_LDO(VDD2, 0x63, 16),
- TWL_FIXED_LDO(VUSB1V5, 0x71, 1500, 17),
- TWL_FIXED_LDO(VUSB1V8, 0x74, 1800, 18),
- TWL_FIXED_LDO(VUSB3V1, 0x77, 3100, 19),
+ TWL_ADJUSTABLE_LDO(VAUX1, 0x17, 1, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VAUX2_4030, 0x1b, 2, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VAUX2, 0x1b, 2, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VAUX3, 0x1f, 3, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VAUX4, 0x23, 4, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VMMC1, 0x27, 5, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VMMC2, 0x2b, 6, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VPLL1, 0x2f, 7, 100, 0x00),
+ TWL_ADJUSTABLE_LDO(VPLL2, 0x33, 8, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VSIM, 0x37, 9, 100, 0x00),
+ TWL_ADJUSTABLE_LDO(VDAC, 0x3b, 10, 100, 0x08),
+ TWL_FIXED_LDO(VINTANA1, 0x3f, 1500, 11, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VINTANA2, 0x43, 12, 100, 0x08),
+ TWL_FIXED_LDO(VINTDIG, 0x47, 1500, 13, 100, 0x08),
+ TWL_ADJUSTABLE_LDO(VIO, 0x4b, 14, 1000, 0x08),
+ TWL_ADJUSTABLE_LDO(VDD1, 0x55, 15, 1000, 0x08),
+ TWL_ADJUSTABLE_LDO(VDD2, 0x63, 16, 1000, 0x08),
+ TWL_FIXED_LDO(VUSB1V5, 0x71, 1500, 17, 100, 0x08),
+ TWL_FIXED_LDO(VUSB1V8, 0x74, 1800, 18, 100, 0x08),
+ TWL_FIXED_LDO(VUSB3V1, 0x77, 3100, 19, 150, 0x08),
/* VUSBCP is managed *only* by the USB subchip */
};
-static const u8 REG_REMAP_table[] = {
- 0x08, 0x08, 0x08, 0x08, 0x00, 0x08, 0x08,
- 0x08, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08,
- 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
- 0x08,
-};
-
static int twl4030reg_probe(struct platform_device *pdev)
{
int i;
@@ -482,7 +487,7 @@ static int twl4030reg_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, rdev);
- twl4030reg_write(info, VREG_REMAP, REG_REMAP_table[pdev->id]);
+ twl4030reg_write(info, VREG_REMAP, info->remap);
/* NOTE: many regulators support short-circuit IRQs (presentable
* as REGULATOR_OVER_CURRENT notifications?) configured via:
--
1.6.3.3
--
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