evie/android_kernel_oneplus_msm8998
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regulator: msm-gfx-ldo: Add LDO initial configuration

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Add LDO initial configuration for msmtitanium.

CRs-Fixed: 975536
Change-Id: If3dea4c4422a1b11b4922b95a99c5e2fe3418a26
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
This commit is contained in:
Anirudh Ghayal 2016-02-10 23:45:08 +05:30 • committed by David Keitel
parent 87c74153a8
commit 5f4e7073d9
1 changed files with 30 additions and 11 deletions
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41
drivers/regulator/msm_gfx_ldo.c
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@ -28,6 +28,11 @@
#include <linux/slab.h>
#include <linux/uaccess.h>
#define LDO_ATEST_REG 0x0
#define LDO_CFG0_REG 0x4
#define LDO_CFG1_REG 0x8
#define LDO_CFG2_REG 0xC
#define LDO_VREF_TEST_CFG 0x14
#define ENABLE_LDO_STATUS_BIT (BIT(8) | BIT(12))
#define LDO_AUTOBYPASS_BIT BIT(20)
@ -89,6 +94,11 @@ struct fuse_param {
unsigned bit_end;
};
struct ldo_config {
u32 offset;
u32 value;
};
struct msm_gfx_ldo {
struct device *dev;
struct regulator_desc rdesc;
@ -111,6 +121,7 @@ struct msm_gfx_ldo {
const struct fuse_param **init_volt_param;
bool ldo_enable;
bool ldo_bypass_fuse_enable;
struct ldo_config *ldo_init_config;
void __iomem *efuse_base;
phys_addr_t efuse_addr;
@ -125,6 +136,15 @@ struct msm_gfx_ldo {
};
#define MSMTITANIUM_LDO_FUSE_CORNERS 3
#define LDO_MAX_OFFSET 0xFFFF
static struct ldo_config msmtitanium_ldo_config[] = {
{LDO_ATEST_REG, 0x00000203},
{LDO_CFG0_REG, 0x05008600},
{LDO_CFG1_REG, 0x0},
{LDO_CFG2_REG, 0x0000C3FC},
{LDO_VREF_TEST_CFG, 0x004B1102},
{LDO_MAX_OFFSET, LDO_MAX_OFFSET},
};
static struct fuse_param msmtitanium_ldo_enable_param[] = {
{65, 10, 10},
@ -888,7 +908,7 @@ static int msm_gfx_ldo_init(struct platform_device *pdev,
{
struct resource *res;
u32 len, ctl;
int rc;
int rc, i = 0;
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ldo_addr");
if (!res || !res->start) {
@ -920,16 +940,14 @@ static int msm_gfx_ldo_init(struct platform_device *pdev,
ctl &= ~LDO_CLAMP_IO_BIT;
writel_relaxed(ctl, ldo_vreg->ldo_base + PWRSWITCH_CTRL_REG);
/* enable ldo status routing */
ctl = readl_relaxed(ldo_vreg->ldo_base + LDO_VREF_TEST_CFG);
ctl |= ENABLE_LDO_STATUS_BIT;
writel_relaxed(ctl, ldo_vreg->ldo_base + LDO_VREF_TEST_CFG);
/* enable auto-bypass */
ctl = readl_relaxed(ldo_vreg->ldo_base + LDO_VREF_TEST_CFG);
ctl |= LDO_AUTOBYPASS_BIT;
writel_relaxed(ctl, ldo_vreg->ldo_base + LDO_VREF_TEST_CFG);
i = 0;
while (ldo_vreg->ldo_init_config &&
ldo_vreg->ldo_init_config[i].offset != LDO_MAX_OFFSET) {
writel_relaxed(ldo_vreg->ldo_init_config[i].value,
ldo_vreg->ldo_base +
ldo_vreg->ldo_init_config[i].offset);
i++;
}
/* complete the writes */
mb();
@ -1056,6 +1074,7 @@ static int msm_gfx_ldo_target_init(struct msm_gfx_ldo *ldo_vreg)
ldo_vreg->init_volt_param[i] =
msmtitanium_init_voltage_param[i];
ldo_vreg->ldo_init_config = msmtitanium_ldo_config;
ldo_vreg->ref_volt = msmtitanium_fuse_ref_volt;
ldo_vreg->ldo_enable_param = msmtitanium_ldo_enable_param;
ldo_vreg->ldo_bypass_fuse_enable = true;