+++ /dev/null
-From 0fb08a02baf5114fd3bdbc5aa92d6a6cd6d5ef3f Mon Sep 17 00:00:00 2001
-From: Manoharan Vijaya Raghavan <mraghava@codeaurora.org>
-Date: Tue, 24 Jan 2017 20:58:46 +0530
-Subject: ipq: scm: TZ don't need clock to be enabled/disabled for ipq
-
-When SCM was made as a platform driver, clock management was
-addedfor firmware calls. This is not required for IPQ.
-
-Change-Id: I3d29fafe0266e51f708f2718bab03907078b0f4d
-Signed-off-by: Manoharan Vijaya Raghavan <mraghava@codeaurora.org>
----
- drivers/firmware/qcom_scm.c | 87 +++++++++++++++++++++++++++++----------------
- 1 file changed, 57 insertions(+), 30 deletions(-)
-
-(limited to 'drivers/firmware/qcom_scm.c')
-
---- a/drivers/firmware/qcom_scm.c
-+++ b/drivers/firmware/qcom_scm.c
-@@ -28,12 +28,15 @@
-
- #include "qcom_scm.h"
-
-+#define SCM_NOCLK 1
-+
- struct qcom_scm {
- struct device *dev;
- struct clk *core_clk;
- struct clk *iface_clk;
- struct clk *bus_clk;
- struct reset_controller_dev reset;
-+ int is_clkdisabled;
- };
-
- static struct qcom_scm *__scm;
-@@ -42,6 +45,9 @@ static int qcom_scm_clk_enable(void)
- {
- int ret;
-
-+ if (__scm->is_clkdisabled)
-+ return 0;
-+
- ret = clk_prepare_enable(__scm->core_clk);
- if (ret)
- goto bail;
-@@ -66,6 +72,9 @@ bail:
-
- static void qcom_scm_clk_disable(void)
- {
-+ if (__scm->is_clkdisabled)
-+ return;
-+
- clk_disable_unprepare(__scm->core_clk);
- clk_disable_unprepare(__scm->iface_clk);
- clk_disable_unprepare(__scm->bus_clk);
-@@ -320,37 +329,61 @@ bool qcom_scm_is_available(void)
- }
- EXPORT_SYMBOL(qcom_scm_is_available);
-
-+static const struct of_device_id qcom_scm_dt_match[] = {
-+ { .compatible = "qcom,scm-apq8064",},
-+ { .compatible = "qcom,scm-msm8660",},
-+ { .compatible = "qcom,scm-msm8960",},
-+ { .compatible = "qcom,scm-ipq807x", .data = (void *)SCM_NOCLK },
-+ { .compatible = "qcom,scm-ipq806x", .data = (void *)SCM_NOCLK },
-+ { .compatible = "qcom,scm-ipq40xx", .data = (void *)SCM_NOCLK },
-+ { .compatible = "qcom,scm-msm8960",},
-+ { .compatible = "qcom,scm-msm8960",},
-+ { .compatible = "qcom,scm",},
-+ {}
-+};
-+
- static int qcom_scm_probe(struct platform_device *pdev)
- {
- struct qcom_scm *scm;
-+ const struct of_device_id *id;
- int ret;
-
- scm = devm_kzalloc(&pdev->dev, sizeof(*scm), GFP_KERNEL);
- if (!scm)
- return -ENOMEM;
-
-- scm->core_clk = devm_clk_get(&pdev->dev, "core");
-- if (IS_ERR(scm->core_clk)) {
-- if (PTR_ERR(scm->core_clk) == -EPROBE_DEFER)
-- return PTR_ERR(scm->core_clk);
-+ id = of_match_device(qcom_scm_dt_match, &pdev->dev);
-+ if (id)
-+ scm->is_clkdisabled = (unsigned int)id->data;
-+ else
-+ scm->is_clkdisabled = 0;
-+
-+ if (!(scm->is_clkdisabled)) {
-+
-+ scm->core_clk = devm_clk_get(&pdev->dev, "core");
-+ if (IS_ERR(scm->core_clk)) {
-+ if (PTR_ERR(scm->core_clk) == -EPROBE_DEFER)
-+ return PTR_ERR(scm->core_clk);
-
-- scm->core_clk = NULL;
-- }
--
-- if (of_device_is_compatible(pdev->dev.of_node, "qcom,scm")) {
-- scm->iface_clk = devm_clk_get(&pdev->dev, "iface");
-- if (IS_ERR(scm->iface_clk)) {
-- if (PTR_ERR(scm->iface_clk) != -EPROBE_DEFER)
-- dev_err(&pdev->dev, "failed to acquire iface clk\n");
-- return PTR_ERR(scm->iface_clk);
-+ scm->core_clk = NULL;
- }
-
-- scm->bus_clk = devm_clk_get(&pdev->dev, "bus");
-- if (IS_ERR(scm->bus_clk)) {
-- if (PTR_ERR(scm->bus_clk) != -EPROBE_DEFER)
-- dev_err(&pdev->dev, "failed to acquire bus clk\n");
-- return PTR_ERR(scm->bus_clk);
-+ if (of_device_is_compatible(pdev->dev.of_node, "qcom,scm")) {
-+ scm->iface_clk = devm_clk_get(&pdev->dev, "iface");
-+ if (IS_ERR(scm->iface_clk)) {
-+ if (PTR_ERR(scm->iface_clk) != -EPROBE_DEFER)
-+ dev_err(&pdev->dev, "failed to acquire iface clk\n");
-+ return PTR_ERR(scm->iface_clk);
-+ }
-+
-+ scm->bus_clk = devm_clk_get(&pdev->dev, "bus");
-+ if (IS_ERR(scm->bus_clk)) {
-+ if (PTR_ERR(scm->bus_clk) != -EPROBE_DEFER)
-+ dev_err(&pdev->dev, "failed to acquire bus clk\n");
-+ return PTR_ERR(scm->bus_clk);
-+ }
- }
-+
- }
-
- scm->reset.ops = &qcom_scm_pas_reset_ops;
-@@ -358,10 +391,12 @@ static int qcom_scm_probe(struct platfor
- scm->reset.of_node = pdev->dev.of_node;
- reset_controller_register(&scm->reset);
-
-- /* vote for max clk rate for highest performance */
-- ret = clk_set_rate(scm->core_clk, INT_MAX);
-- if (ret)
-- return ret;
-+ if (!(scm->is_clkdisabled)) {
-+ /* vote for max clk rate for highest performance */
-+ ret = clk_set_rate(scm->core_clk, INT_MAX);
-+ if (ret)
-+ return ret;
-+ }
-
- __scm = scm;
- __scm->dev = &pdev->dev;
-@@ -371,14 +406,6 @@ static int qcom_scm_probe(struct platfor
- return 0;
- }
-
--static const struct of_device_id qcom_scm_dt_match[] = {
-- { .compatible = "qcom,scm-apq8064",},
-- { .compatible = "qcom,scm-msm8660",},
-- { .compatible = "qcom,scm-msm8960",},
-- { .compatible = "qcom,scm",},
-- {}
--};
--
- static struct platform_driver qcom_scm_driver = {
- .driver = {
- .name = "qcom_scm",
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