| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1481804490-8583-5-git-send-email-akdwived@codeaurora.org>
Date: Thu, 15 Dec 2016 17:51:27 +0530
From: Avaneesh Kumar Dwivedi <akdwived@...eaurora.org>
To: bjorn.andersson@...aro.org
Cc: sboyd@...eaurora.org, agross@...eaurora.org,
linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-remoteproc@...r.kernel.org,
Avaneesh Kumar Dwivedi <akdwived@...eaurora.org>
Subject: [PATCH v5 4/7] remoteproc: qcom: Modify regulator enable and disable interface.
Regulator enable/disable routine will get additional input parameter
of regulator info and count, It will read regulator info and will do
appropriate voltage and load configuration before turning them up/down.
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@...eaurora.org>
---
drivers/remoteproc/qcom_q6v5_pil.c | 100 ++++++++++++++++++++++++++-----------
1 file changed, 70 insertions(+), 30 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c
index e95d118..e19fb9d 100644
--- a/drivers/remoteproc/qcom_q6v5_pil.c
+++ b/drivers/remoteproc/qcom_q6v5_pil.c
@@ -140,7 +140,6 @@ struct q6v5 {
int active_reg_count;
int proxy_reg_count;
- struct regulator_bulk_data supply[4];
struct clk *ahb_clk;
struct clk *axi_clk;
@@ -160,12 +159,6 @@ struct q6v5 {
size_t mpss_size;
};
-enum {
- Q6V5_SUPPLY_CX,
- Q6V5_SUPPLY_MX,
- Q6V5_SUPPLY_MSS,
- Q6V5_SUPPLY_PLL,
-};
static int q6v5_regulator_init(struct device *dev, struct reg_info *regs,
const struct qcom_mss_reg_res *reg_res)
@@ -194,34 +187,69 @@ static int q6v5_regulator_init(struct device *dev, struct reg_info *regs,
return count;
}
-
-static int q6v5_regulator_enable(struct q6v5 *qproc)
+static int q6v5_regulator_enable(struct q6v5 *qproc,
+ struct reg_info *regs, int count)
{
- struct regulator *mss = qproc->supply[Q6V5_SUPPLY_MSS].consumer;
- struct regulator *mx = qproc->supply[Q6V5_SUPPLY_MX].consumer;
int ret;
+ int i;
- /* TODO: Q6V5_SUPPLY_CX is supposed to be set to super-turbo here */
+ for (i = 0; i < count; i++) {
+ if (regs[i].uV > 0) {
+ ret = regulator_set_voltage(regs[i].reg,
+ regs[i].uV, INT_MAX);
+ if (ret) {
+ dev_err(qproc->dev,
+ "Failed to request voltage for %d.\n",
+ i);
+ goto err;
+ }
+ }
- ret = regulator_set_voltage(mx, 1050000, INT_MAX);
- if (ret)
- return ret;
+ if (regs[i].uA > 0) {
+ ret = regulator_set_load(regs[i].reg,
+ regs[i].uA);
+ if (ret < 0) {
+ dev_err(qproc->dev, "Failed to set regulator mode\n");
+ goto err;
+ }
+ }
+
+ ret = regulator_enable(regs[i].reg);
+ if (ret) {
+ dev_err(qproc->dev, "Regulator enable failed\n");
+ goto err;
+ }
+ }
+
+ return 0;
+err:
+ for (; i >= 0; i--) {
+ if (regs[i].uV > 0)
+ regulator_set_voltage(regs[i].reg, 0, INT_MAX);
- regulator_set_voltage(mss, 1000000, 1150000);
+ if (regs[i].uA > 0)
+ regulator_set_load(regs[i].reg, 0);
- return regulator_bulk_enable(ARRAY_SIZE(qproc->supply), qproc->supply);
+ regulator_disable(regs[i].reg);
+ }
+
+ return ret;
}
-static void q6v5_regulator_disable(struct q6v5 *qproc)
+static void q6v5_regulator_disable(struct q6v5 *qproc,
+ struct reg_info *regs, int count)
{
- struct regulator *mss = qproc->supply[Q6V5_SUPPLY_MSS].consumer;
- struct regulator *mx = qproc->supply[Q6V5_SUPPLY_MX].consumer;
+ int i;
- /* TODO: Q6V5_SUPPLY_CX corner votes should be released */
+ for (i = 0; i < count; i++) {
+ if (regs[i].uV > 0)
+ regulator_set_voltage(regs[i].reg, 0, INT_MAX);
+
+ if (regs[i].uA > 0)
+ regulator_set_load(regs[i].reg, 0);
- regulator_bulk_disable(ARRAY_SIZE(qproc->supply), qproc->supply);
- regulator_set_voltage(mx, 0, INT_MAX);
- regulator_set_voltage(mss, 0, 1150000);
+ regulator_disable(regs[i].reg);
+ }
}
static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
@@ -513,12 +541,19 @@ static int q6v5_start(struct rproc *rproc)
struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
int ret;
- ret = q6v5_regulator_enable(qproc);
+ ret = q6v5_regulator_enable(qproc, qproc->proxy_regs,
+ qproc->proxy_reg_count);
if (ret) {
- dev_err(qproc->dev, "failed to enable supplies\n");
+ dev_err(qproc->dev, "failed to enable proxy supplies\n");
return ret;
}
+ ret = q6v5_regulator_enable(qproc, qproc->active_regs,
+ qproc->active_reg_count);
+ if (ret) {
+ dev_err(qproc->dev, "failed to enable supplies\n");
+ goto disable_proxy_reg;
+ }
ret = reset_control_deassert(qproc->mss_restart);
if (ret) {
dev_err(qproc->dev, "failed to deassert mss restart\n");
@@ -587,8 +622,11 @@ static int q6v5_start(struct rproc *rproc)
assert_reset:
reset_control_assert(qproc->mss_restart);
disable_vdd:
- q6v5_regulator_disable(qproc);
-
+ q6v5_regulator_disable(qproc, qproc->active_regs,
+ qproc->active_reg_count);
+disable_proxy_reg:
+ q6v5_regulator_disable(qproc, qproc->proxy_regs,
+ qproc->proxy_reg_count);
return ret;
}
@@ -617,8 +655,10 @@ static int q6v5_stop(struct rproc *rproc)
clk_disable_unprepare(qproc->rom_clk);
clk_disable_unprepare(qproc->axi_clk);
clk_disable_unprepare(qproc->ahb_clk);
- q6v5_regulator_disable(qproc);
-
+ q6v5_regulator_disable(qproc, qproc->active_regs,
+ qproc->active_reg_count);
+ q6v5_regulator_disable(qproc, qproc->proxy_regs,
+ qproc->proxy_reg_count);
return 0;
}
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.
Powered by blists - more mailing lists