From: Viresh Kumar <viresh.kumar@linaro.org> To: Ilia Lin <ilialin@codeaurora.org> Cc: mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, mark.rutland@arm.com, nm@ti.com, lgirdwood@gmail.com, broonie@kernel.org, andy.gross@linaro.org, david.brown@linaro.org, catalin.marinas@arm.com, will.deacon@arm.com, rjw@rjwysocki.net, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, rnayak@codeaurora.org, amit.kucheria@linaro.org, nicolas.dechesne@linaro.org, celster@codeaurora.org, tfinkel@codeaurora.org Subject: Re: [PATCH] cpufreq: Add Kryo CPU scaling driver Date: Mon, 21 May 2018 10:34:53 +0530 [thread overview] Message-ID: <20180521050453.vls3fe6fyake4dhk@vireshk-i7> (raw) In-Reply-To: <1526729701-8589-1-git-send-email-ilialin@codeaurora.org> More comments after Russell's reply. On 19-05-18, 14:35, Ilia Lin wrote: > +static int __init qcom_cpufreq_kryo_driver_init(void) > +{ > + struct device *cpu_dev_silver, *cpu_dev_gold; > + struct opp_table *opp_silver, *opp_gold; > + enum _msm8996_version msm8996_version; > + struct nvmem_cell *speedbin_nvmem; > + struct platform_device *pdev; > + struct device_node *np; > + u8 *speedbin; > + u32 versions; > + size_t len; > + int ret; > + > + cpu_dev_silver = get_cpu_device(SILVER_LEAD); > + if (IS_ERR_OR_NULL(cpu_dev_silver)) get_cpu_device() returns only NULL on error. > + return PTR_ERR(cpu_dev_silver); > + > + cpu_dev_gold = get_cpu_device(SILVER_LEAD); > + if (IS_ERR_OR_NULL(cpu_dev_gold)) > + return PTR_ERR(cpu_dev_gold); > + > + msm8996_version = qcom_cpufreq_kryo_get_msm_id(); > + if (NUM_OF_MSM8996_VERSIONS == msm8996_version) { > + dev_err(cpu_dev_silver, "Not Snapdragon 820/821!"); > + return -ENODEV; > + } > + > + np = dev_pm_opp_of_get_opp_desc_node(cpu_dev_silver); > + if (IS_ERR_OR_NULL(np)) same here. > + return PTR_ERR(np); > + > + if (!of_device_is_compatible(np, "operating-points-v2-kryo-cpu")) { > + ret = -ENOENT; > + goto free_np; > + } > + > + speedbin_nvmem = of_nvmem_cell_get(np, NULL); > + if (IS_ERR(speedbin_nvmem)) { > + ret = PTR_ERR(speedbin_nvmem); > + dev_err(cpu_dev_silver, "Could not get nvmem cell: %d\n", ret); > + goto free_np; > + } > + > + speedbin = nvmem_cell_read(speedbin_nvmem, &len); > + nvmem_cell_put(speedbin_nvmem); > + > + switch (msm8996_version) { > + case MSM8996_V3: > + versions = 1 << (unsigned int)(*speedbin); > + break; > + case MSM8996_SG: > + versions = 1 << ((unsigned int)(*speedbin) + 4); > + break; > + default: > + BUG(); > + break; > + } > + > + opp_silver = dev_pm_opp_set_supported_hw(cpu_dev_silver,&versions,1); > + if (IS_ERR(opp_silver)) { > + dev_err(cpu_dev_silver, "Failed to set supported hardware\n"); > + ret = PTR_ERR(opp_silver); > + goto free_np; > + } > + > + opp_gold = dev_pm_opp_set_supported_hw(cpu_dev_gold,&versions,1); > + if (IS_ERR(opp_gold)) { > + dev_err(cpu_dev_gold, "Failed to set supported hardware\n"); > + ret = PTR_ERR(opp_gold); > + goto free_opp_silver; > + } > + > + pdev = platform_device_register_simple("cpufreq-dt", -1, NULL, 0); and this only returns ERR_PTR() on error. > + if (!IS_ERR_OR_NULL(pdev)) > + return 0; > + > + ret = PTR_ERR(pdev); > + dev_err(cpu_dev_silver, "Failed to register platform device\n"); > + dev_pm_opp_put_supported_hw(opp_gold); > + > +free_opp_silver: > + dev_pm_opp_put_supported_hw(opp_silver); > + > +free_np: > + of_node_put(np); > + > + return ret; > +} > +late_initcall(qcom_cpufreq_kryo_driver_init); > + > +MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Kryo CPUfreq driver"); > +MODULE_LICENSE("GPL v2"); > -- > 1.9.1 -- viresh
WARNING: multiple messages have this Message-ID (diff)
From: viresh.kumar@linaro.org (Viresh Kumar) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH] cpufreq: Add Kryo CPU scaling driver Date: Mon, 21 May 2018 10:34:53 +0530 [thread overview] Message-ID: <20180521050453.vls3fe6fyake4dhk@vireshk-i7> (raw) In-Reply-To: <1526729701-8589-1-git-send-email-ilialin@codeaurora.org> More comments after Russell's reply. On 19-05-18, 14:35, Ilia Lin wrote: > +static int __init qcom_cpufreq_kryo_driver_init(void) > +{ > + struct device *cpu_dev_silver, *cpu_dev_gold; > + struct opp_table *opp_silver, *opp_gold; > + enum _msm8996_version msm8996_version; > + struct nvmem_cell *speedbin_nvmem; > + struct platform_device *pdev; > + struct device_node *np; > + u8 *speedbin; > + u32 versions; > + size_t len; > + int ret; > + > + cpu_dev_silver = get_cpu_device(SILVER_LEAD); > + if (IS_ERR_OR_NULL(cpu_dev_silver)) get_cpu_device() returns only NULL on error. > + return PTR_ERR(cpu_dev_silver); > + > + cpu_dev_gold = get_cpu_device(SILVER_LEAD); > + if (IS_ERR_OR_NULL(cpu_dev_gold)) > + return PTR_ERR(cpu_dev_gold); > + > + msm8996_version = qcom_cpufreq_kryo_get_msm_id(); > + if (NUM_OF_MSM8996_VERSIONS == msm8996_version) { > + dev_err(cpu_dev_silver, "Not Snapdragon 820/821!"); > + return -ENODEV; > + } > + > + np = dev_pm_opp_of_get_opp_desc_node(cpu_dev_silver); > + if (IS_ERR_OR_NULL(np)) same here. > + return PTR_ERR(np); > + > + if (!of_device_is_compatible(np, "operating-points-v2-kryo-cpu")) { > + ret = -ENOENT; > + goto free_np; > + } > + > + speedbin_nvmem = of_nvmem_cell_get(np, NULL); > + if (IS_ERR(speedbin_nvmem)) { > + ret = PTR_ERR(speedbin_nvmem); > + dev_err(cpu_dev_silver, "Could not get nvmem cell: %d\n", ret); > + goto free_np; > + } > + > + speedbin = nvmem_cell_read(speedbin_nvmem, &len); > + nvmem_cell_put(speedbin_nvmem); > + > + switch (msm8996_version) { > + case MSM8996_V3: > + versions = 1 << (unsigned int)(*speedbin); > + break; > + case MSM8996_SG: > + versions = 1 << ((unsigned int)(*speedbin) + 4); > + break; > + default: > + BUG(); > + break; > + } > + > + opp_silver = dev_pm_opp_set_supported_hw(cpu_dev_silver,&versions,1); > + if (IS_ERR(opp_silver)) { > + dev_err(cpu_dev_silver, "Failed to set supported hardware\n"); > + ret = PTR_ERR(opp_silver); > + goto free_np; > + } > + > + opp_gold = dev_pm_opp_set_supported_hw(cpu_dev_gold,&versions,1); > + if (IS_ERR(opp_gold)) { > + dev_err(cpu_dev_gold, "Failed to set supported hardware\n"); > + ret = PTR_ERR(opp_gold); > + goto free_opp_silver; > + } > + > + pdev = platform_device_register_simple("cpufreq-dt", -1, NULL, 0); and this only returns ERR_PTR() on error. > + if (!IS_ERR_OR_NULL(pdev)) > + return 0; > + > + ret = PTR_ERR(pdev); > + dev_err(cpu_dev_silver, "Failed to register platform device\n"); > + dev_pm_opp_put_supported_hw(opp_gold); > + > +free_opp_silver: > + dev_pm_opp_put_supported_hw(opp_silver); > + > +free_np: > + of_node_put(np); > + > + return ret; > +} > +late_initcall(qcom_cpufreq_kryo_driver_init); > + > +MODULE_DESCRIPTION("Qualcomm Technologies, Inc. Kryo CPUfreq driver"); > +MODULE_LICENSE("GPL v2"); > -- > 1.9.1 -- viresh
next prev parent reply other threads:[~2018-05-21 5:04 UTC|newest] Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-05-17 11:19 [PATCH v8 00/15] CPU scaling support for msm8996 Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 01/15] soc: qcom: Separate kryo l2 accessors from PMU driver Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 02/15] clk: qcom: Make clk_alpha_pll_configure available to modules Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 03/15] clk: Use devm_ in the register fixed factor clock Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 04/15] clk: qcom: Add CPU clock driver for msm8996 Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-22 13:49 ` kbuild test robot 2018-05-22 13:49 ` kbuild test robot 2018-05-22 13:49 ` kbuild test robot 2018-05-17 11:19 ` [PATCH v8 05/15] dt-bindings: clk: qcom: Add bindings for CPU clock " Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 06/15] clk: qcom: cpu-8996: Add support to switch to alternate PLL Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 07/15] clk: qcom: cpu-8996: Add support to switch below 600Mhz Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 08/15] clk: qcom: Add ACD path to CPU clock driver for msm8996 Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 09/15] dt: qcom: Add opp and thermal to the msm8996 Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 10/15] cpufreq: Add Kryo CPU scaling driver Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-18 1:45 ` Viresh Kumar 2018-05-18 1:45 ` Viresh Kumar 2018-05-19 11:09 ` ilialin 2018-05-19 11:09 ` ilialin at codeaurora.org 2018-05-19 11:09 ` ilialin 2018-05-19 11:54 ` Russell King - ARM Linux 2018-05-19 11:54 ` Russell King - ARM Linux 2018-05-19 11:41 ` ilialin 2018-05-19 11:41 ` ilialin at codeaurora.org 2018-05-19 11:41 ` ilialin 2018-05-19 11:45 ` ilialin 2018-05-19 11:45 ` ilialin at codeaurora.org 2018-05-19 11:45 ` ilialin 2018-05-21 4:49 ` Viresh Kumar 2018-05-21 4:49 ` Viresh Kumar 2018-05-21 9:00 ` ilialin 2018-05-21 9:00 ` ilialin at codeaurora.org 2018-05-21 9:00 ` ilialin 2018-05-21 9:05 ` Viresh Kumar 2018-05-21 9:05 ` Viresh Kumar 2018-05-19 11:35 ` [PATCH] " Ilia Lin 2018-05-19 11:35 ` Ilia Lin 2018-05-21 5:04 ` Viresh Kumar [this message] 2018-05-21 5:04 ` Viresh Kumar 2018-05-21 12:50 ` Sudeep Holla 2018-05-21 12:50 ` Sudeep Holla 2018-05-21 12:57 ` ilialin 2018-05-21 12:57 ` ilialin at codeaurora.org 2018-05-21 12:57 ` ilialin 2018-05-21 12:57 ` ilialin 2018-05-21 13:04 ` Sudeep Holla 2018-05-21 13:04 ` Sudeep Holla 2018-05-22 6:56 ` ilialin 2018-05-22 6:56 ` ilialin at codeaurora.org 2018-05-22 6:56 ` ilialin 2018-05-22 6:56 ` ilialin 2018-05-22 9:12 ` Sudeep Holla 2018-05-22 9:12 ` Sudeep Holla 2018-05-22 7:59 ` ilialin 2018-05-22 7:59 ` ilialin at codeaurora.org 2018-05-22 7:59 ` ilialin 2018-05-22 7:59 ` ilialin 2018-05-22 9:18 ` Sudeep Holla 2018-05-22 9:18 ` Sudeep Holla 2018-05-22 9:38 ` Viresh Kumar 2018-05-22 9:38 ` Viresh Kumar 2018-05-22 11:29 ` Ilia Lin 2018-05-22 11:29 ` Ilia Lin 2018-05-22 13:07 ` Sudeep Holla 2018-05-22 13:07 ` Sudeep Holla 2018-05-23 5:44 ` Viresh Kumar 2018-05-23 5:44 ` Viresh Kumar 2018-05-23 9:05 ` Ilia Lin 2018-05-23 9:05 ` Ilia Lin 2018-05-23 9:32 ` Viresh Kumar 2018-05-23 9:32 ` Viresh Kumar 2018-05-23 9:40 ` Russell King - ARM Linux 2018-05-23 9:40 ` Russell King - ARM Linux 2018-05-23 9:59 ` Viresh Kumar 2018-05-23 9:59 ` Viresh Kumar 2018-05-21 10:31 ` Ilia Lin 2018-05-21 10:31 ` Ilia Lin 2018-05-21 10:37 ` Viresh Kumar 2018-05-21 10:37 ` Viresh Kumar 2018-05-21 10:54 ` Russell King - ARM Linux 2018-05-21 10:54 ` Russell King - ARM Linux 2018-05-21 11:05 ` ilialin 2018-05-21 11:05 ` ilialin at codeaurora.org 2018-05-21 11:05 ` ilialin 2018-05-21 12:11 ` Russell King - ARM Linux 2018-05-21 12:11 ` Russell King - ARM Linux 2018-05-21 12:35 ` ilialin 2018-05-21 12:35 ` ilialin at codeaurora.org 2018-05-21 12:35 ` ilialin 2018-05-21 12:41 ` Russell King - ARM Linux 2018-05-21 12:41 ` Russell King - ARM Linux 2018-05-17 11:19 ` [PATCH v8 11/15] dt-bindings: cpufreq: Document operating-points-v2-kryo-cpu Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-18 14:26 ` Rob Herring 2018-05-18 14:26 ` Rob Herring 2018-05-17 11:19 ` [PATCH v8 12/15] dt: qcom: Add qcom-cpufreq-kryo driver configuration Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 13/15] regulator: qcom_spmi: Add support for SAW Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 14/15] dt-bindings: qcom_spmi: Document SAW support Ilia Lin 2018-05-17 11:19 ` Ilia Lin 2018-05-17 11:19 ` [PATCH v8 15/15] dt: qcom: Add SAW regulator for 8x96 CPUs Ilia Lin 2018-05-17 11:19 ` Ilia Lin
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