From ab0822d57d8ccde7161aef56b97313fc24162d61 Mon Sep 17 00:00:00 2001 From: "spjoshi@codeaurora.org" Date: Tue, 15 Nov 2016 17:19:24 -0800 Subject: firmware: qcom: scm: Remove core, iface and bus clocks dependency Core, iface and bus clocks are not required to be voted from SCM driver for some of the Qualcomm chipsets. Remove dependency on these clocks from driver. Suggested-by: Bjorn Andersson Signed-off-by: Sarangdhar Joshi Acked-by: Bjorn Andersson Signed-off-by: Andy Gross --- drivers/firmware/qcom_scm.c | 49 ++++++++++++++++++++++++++++++++++----------- 1 file changed, 37 insertions(+), 12 deletions(-) (limited to 'drivers/firmware') diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 9bf66aefdbd0..7a104d31ef0f 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -28,6 +28,10 @@ #include "qcom_scm.h" +#define SCM_HAS_CORE_CLK BIT(0) +#define SCM_HAS_IFACE_CLK BIT(1) +#define SCM_HAS_BUS_CLK BIT(2) + struct qcom_scm { struct device *dev; struct clk *core_clk; @@ -323,32 +327,40 @@ EXPORT_SYMBOL(qcom_scm_is_available); static int qcom_scm_probe(struct platform_device *pdev) { struct qcom_scm *scm; + unsigned long clks; 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); + clks = (unsigned long)of_device_get_match_data(&pdev->dev); + if (clks & SCM_HAS_CORE_CLK) { + 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; + scm->core_clk = NULL; + } } - if (of_device_is_compatible(pdev->dev.of_node, "qcom,scm")) { + if (clks & SCM_HAS_IFACE_CLK) { 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"); + dev_err(&pdev->dev, + "failed to acquire iface clk\n"); return PTR_ERR(scm->iface_clk); } + } + if (clks & SCM_HAS_BUS_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"); + dev_err(&pdev->dev, + "failed to acquire bus clk\n"); return PTR_ERR(scm->bus_clk); } } @@ -374,10 +386,23 @@ static int qcom_scm_probe(struct platform_device *pdev) } 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",}, + { .compatible = "qcom,scm-apq8064", + .data = (void *) SCM_HAS_CORE_CLK, + }, + { .compatible = "qcom,scm-msm8660", + .data = (void *) SCM_HAS_CORE_CLK, + }, + { .compatible = "qcom,scm-msm8960", + .data = (void *) SCM_HAS_CORE_CLK, + }, + { .compatible = "qcom,scm-msm8996", + .data = NULL, /* no clocks */ + }, + { .compatible = "qcom,scm", + .data = (void *)(SCM_HAS_CORE_CLK + | SCM_HAS_IFACE_CLK + | SCM_HAS_BUS_CLK), + }, {} }; -- cgit v1.2.3-59-g8ed1b