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From: Sricharan R <sricharan@codeaurora.org>
To: Ilia Lin <ilialin@codeaurora.org>,
	mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org,
	mark.rutland@arm.com, rjw@rjwysocki.net, viresh.kumar@linaro.org,
	lgirdwood@gmail.com, broonie@kernel.org, andy.gross@linaro.org,
	david.brown@linaro.org, catalin.marinas@arm.com,
	will.deacon@arm.com, 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
Cc: rnayak@codeaurora.org, amit.kucheria@linaro.org,
	nicolas.dechesne@linaro.org, celster@codeaurora.org,
	tfinkel@codeaurora.org
Subject: Re: [PATCH v4 12/14] cpufreq: Add Kryo CPU scaling driver
Date: Mon, 2 Apr 2018 20:26:00 +0530	[thread overview]
Message-ID: <c17f3623-849f-cba8-8118-623e4e8261da@codeaurora.org> (raw)
In-Reply-To: <1522358807-10413-13-git-send-email-ilialin@codeaurora.org>

Hi Ilia,

> diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
> index 7f56fe5..71350e2 100644
> --- a/drivers/cpufreq/Kconfig.arm
> +++ b/drivers/cpufreq/Kconfig.arm
> @@ -134,6 +134,17 @@ config ARM_OMAP2PLUS_CPUFREQ
>  	depends on ARCH_OMAP2PLUS
>  	default ARCH_OMAP2PLUS
>  
> +config ARM_QCOM_CPUFREQ_KRYO
> +	tristate "Qualcomm Technologies, Inc. Kryo based"

 Does this need to be 'tristate' ?. 'cpu-freq-dt' driver is already
 built as module.

<..>

> +
> +#include <linux/cpu.h>
> +#include <linux/err.h>
> +#include <linux/init.h>
> +#include <linux/io.h>

 Is io.h required ?

Regards,
  Sricharan

> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/nvmem-consumer.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_opp.h>
> +#include <linux/slab.h>
> +#include <linux/soc/qcom/smem.h>
> +
> +#define MSM_ID_SMEM	137
> +#define SILVER_LEAD	0
> +#define GOLD_LEAD	2
> +
> +enum _msm_id {
> +	MSM8996V3 = 0xF6ul,
> +	APQ8096V3 = 0x123ul,
> +	MSM8996SG = 0x131ul,
> +	APQ8096SG = 0x138ul,
> +};
> +
> +enum _msm8996_version {
> +	MSM8996_V3,
> +	MSM8996_SG,
> +	NUM_OF_MSM8996_VERSIONS,
> +};
> +
> +static enum _msm8996_version __init qcom_cpufreq_kryo_get_msm_id(void)
> +{
> +	size_t len;
> +	u32 *msm_id;
> +	enum _msm8996_version version;
> +
> +	msm_id = qcom_smem_get(QCOM_SMEM_HOST_ANY, MSM_ID_SMEM, &len);
> +	/* The first 4 bytes are format, next to them is the actual msm-id */
> +	msm_id++;
> +
> +	switch ((enum _msm_id)*msm_id) {
> +	case MSM8996V3:
> +	case APQ8096V3:
> +		version = MSM8996_V3;
> +		break;
> +	case MSM8996SG:
> +	case APQ8096SG:
> +		version = MSM8996_SG;
> +		break;
> +	default:
> +		version = NUM_OF_MSM8996_VERSIONS;
> +	}
> +
> +	return version;
> +}
> +
> +static int __init qcom_cpufreq_kryo_driver_init(void)
> +{
> +	struct platform_device *pdev;
> +	struct device *cpu_dev;
> +	struct device_node *np;
> +	struct nvmem_cell *speedbin_nvmem;
> +	enum _msm8996_version msm8996_version;
> +	u8 *speedbin;
> +	size_t len;
> +	int ret;
> +	u32 versions;
> +
> +	cpu_dev = get_cpu_device(SILVER_LEAD);
> +	if (IS_ERR_OR_NULL(cpu_dev))
> +		return PTR_ERR(cpu_dev);
> +
> +	msm8996_version = qcom_cpufreq_kryo_get_msm_id();
> +	if (NUM_OF_MSM8996_VERSIONS == msm8996_version) {
> +		dev_err(cpu_dev, "Not Snapdragon 820/821!");
> +		return -ENODEV;
> +        }
> +
> +	np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
> +	if (IS_ERR_OR_NULL(np))
> +		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, "Could not get nvmem cell: %d\n", ret);
> +		goto free_np;
> +	}
> +
> +	speedbin = nvmem_cell_read(speedbin_nvmem, &len);
> +
> +	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;
> +	}
> +
> +	ret = PTR_ERR_OR_ZERO(dev_pm_opp_set_supported_hw(cpu_dev,&versions,1));
> +	if (0 > ret)
> +		goto free_np;
> +
> +	cpu_dev = get_cpu_device(GOLD_LEAD);
> +	ret = PTR_ERR_OR_ZERO(dev_pm_opp_set_supported_hw(cpu_dev,&versions,1));
> +
> +	of_node_put(np);
> +
> +	pdev = platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
> +	if (IS_ERR(pdev)) {
> +		return PTR_ERR(pdev);
> +	}
> +
> +	return 0;
> +
> +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");
> 

-- 
"QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

WARNING: multiple messages have this Message-ID
From: sricharan@codeaurora.org (Sricharan R)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 12/14] cpufreq: Add Kryo CPU scaling driver
Date: Mon, 2 Apr 2018 20:26:00 +0530	[thread overview]
Message-ID: <c17f3623-849f-cba8-8118-623e4e8261da@codeaurora.org> (raw)
In-Reply-To: <1522358807-10413-13-git-send-email-ilialin@codeaurora.org>

Hi Ilia,

> diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
> index 7f56fe5..71350e2 100644
> --- a/drivers/cpufreq/Kconfig.arm
> +++ b/drivers/cpufreq/Kconfig.arm
> @@ -134,6 +134,17 @@ config ARM_OMAP2PLUS_CPUFREQ
>  	depends on ARCH_OMAP2PLUS
>  	default ARCH_OMAP2PLUS
>  
> +config ARM_QCOM_CPUFREQ_KRYO
> +	tristate "Qualcomm Technologies, Inc. Kryo based"

 Does this need to be 'tristate' ?. 'cpu-freq-dt' driver is already
 built as module.

<..>

> +
> +#include <linux/cpu.h>
> +#include <linux/err.h>
> +#include <linux/init.h>
> +#include <linux/io.h>

 Is io.h required ?

Regards,
  Sricharan

> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/nvmem-consumer.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/pm_opp.h>
> +#include <linux/slab.h>
> +#include <linux/soc/qcom/smem.h>
> +
> +#define MSM_ID_SMEM	137
> +#define SILVER_LEAD	0
> +#define GOLD_LEAD	2
> +
> +enum _msm_id {
> +	MSM8996V3 = 0xF6ul,
> +	APQ8096V3 = 0x123ul,
> +	MSM8996SG = 0x131ul,
> +	APQ8096SG = 0x138ul,
> +};
> +
> +enum _msm8996_version {
> +	MSM8996_V3,
> +	MSM8996_SG,
> +	NUM_OF_MSM8996_VERSIONS,
> +};
> +
> +static enum _msm8996_version __init qcom_cpufreq_kryo_get_msm_id(void)
> +{
> +	size_t len;
> +	u32 *msm_id;
> +	enum _msm8996_version version;
> +
> +	msm_id = qcom_smem_get(QCOM_SMEM_HOST_ANY, MSM_ID_SMEM, &len);
> +	/* The first 4 bytes are format, next to them is the actual msm-id */
> +	msm_id++;
> +
> +	switch ((enum _msm_id)*msm_id) {
> +	case MSM8996V3:
> +	case APQ8096V3:
> +		version = MSM8996_V3;
> +		break;
> +	case MSM8996SG:
> +	case APQ8096SG:
> +		version = MSM8996_SG;
> +		break;
> +	default:
> +		version = NUM_OF_MSM8996_VERSIONS;
> +	}
> +
> +	return version;
> +}
> +
> +static int __init qcom_cpufreq_kryo_driver_init(void)
> +{
> +	struct platform_device *pdev;
> +	struct device *cpu_dev;
> +	struct device_node *np;
> +	struct nvmem_cell *speedbin_nvmem;
> +	enum _msm8996_version msm8996_version;
> +	u8 *speedbin;
> +	size_t len;
> +	int ret;
> +	u32 versions;
> +
> +	cpu_dev = get_cpu_device(SILVER_LEAD);
> +	if (IS_ERR_OR_NULL(cpu_dev))
> +		return PTR_ERR(cpu_dev);
> +
> +	msm8996_version = qcom_cpufreq_kryo_get_msm_id();
> +	if (NUM_OF_MSM8996_VERSIONS == msm8996_version) {
> +		dev_err(cpu_dev, "Not Snapdragon 820/821!");
> +		return -ENODEV;
> +        }
> +
> +	np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
> +	if (IS_ERR_OR_NULL(np))
> +		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, "Could not get nvmem cell: %d\n", ret);
> +		goto free_np;
> +	}
> +
> +	speedbin = nvmem_cell_read(speedbin_nvmem, &len);
> +
> +	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;
> +	}
> +
> +	ret = PTR_ERR_OR_ZERO(dev_pm_opp_set_supported_hw(cpu_dev,&versions,1));
> +	if (0 > ret)
> +		goto free_np;
> +
> +	cpu_dev = get_cpu_device(GOLD_LEAD);
> +	ret = PTR_ERR_OR_ZERO(dev_pm_opp_set_supported_hw(cpu_dev,&versions,1));
> +
> +	of_node_put(np);
> +
> +	pdev = platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
> +	if (IS_ERR(pdev)) {
> +		return PTR_ERR(pdev);
> +	}
> +
> +	return 0;
> +
> +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");
> 

-- 
"QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

  parent reply	other threads:[~2018-04-02 14:56 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-29 21:26 [PATCH v4 00/14] CPU scaling support for msm8996 Ilia Lin
2018-03-29 21:26 ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 01/14] soc: qcom: Separate kryo l2 accessors from PMU driver Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-31  4:39   ` kbuild test robot
2018-03-31  4:39     ` kbuild test robot
2018-03-31  4:39     ` kbuild test robot
2018-04-01 22:34   ` Bjorn Andersson
2018-04-01 22:34     ` Bjorn Andersson
2018-03-29 21:26 ` [PATCH v4 02/14] clk: qcom: Make clk_alpha_pll_configure available to modules Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 03/14] clk: qcom: Add CPU clock driver for msm8996 Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 04/14] clk: qcom: Add DT bindings for " Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-04-05 13:18   ` Rob Herring
2018-04-05 13:18     ` Rob Herring
2018-03-29 21:26 ` [PATCH v4 05/14] clk: qcom: cpu-8996: Add support to switch to alternate PLL Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 06/14] clk: qcom: cpu-8996: Add support to switch below 600Mhz Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 07/14] clk: qcom: Add ACD path to CPU clock driver for msm8996 Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 08/14] dt: qcom: Add opp and thermal to the msm8996 Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-04-02  9:16   ` Viresh Kumar
2018-04-02  9:16     ` Viresh Kumar
2018-05-04  6:04     ` Viresh Kumar
2018-05-04  6:04       ` Viresh Kumar
2018-05-04  6:04       ` Viresh Kumar
2018-05-04  6:48       ` ilialin
2018-05-04  6:48         ` ilialin at codeaurora.org
2018-05-04  6:48         ` ilialin
2018-05-04  6:48         ` ilialin
2018-05-04  7:03         ` Viresh Kumar
2018-05-04  7:03           ` Viresh Kumar
2018-05-04  7:03           ` Viresh Kumar
2018-03-29 21:26 ` [PATCH v4 09/14] regulator: qcom_spmi: Add support for SAW Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 10/14] dt-bindings: Add support for SAW documentation Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-04-09 20:21   ` Rob Herring
2018-04-09 20:21     ` Rob Herring
2018-04-17 11:09     ` Mark Brown
2018-04-17 11:09       ` Mark Brown
2018-03-29 21:26 ` [PATCH v4 11/14] dt: qcom: Add SAW regulator for 8x96 CPUs Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-03-29 21:26 ` [PATCH v4 12/14] cpufreq: Add Kryo CPU scaling driver Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-04-02  9:26   ` Viresh Kumar
2018-04-02  9:26     ` Viresh Kumar
2018-04-02 14:56   ` Sricharan R [this message]
2018-04-02 14:56     ` Sricharan R
2018-03-29 21:26 ` [PATCH v4 13/14] dt-bindings: cpufreq: Document operating-points-v2-kryo-cpu Ilia Lin
2018-03-29 21:26   ` Ilia Lin
2018-04-02  9:30   ` Viresh Kumar
2018-04-02  9:30     ` Viresh Kumar
2018-04-02 15:07     ` Sricharan R
2018-04-02 15:07       ` Sricharan R
2018-04-03  2:41       ` Sricharan R
2018-04-03  2:41         ` Sricharan R
2018-04-03  4:23         ` Viresh Kumar
2018-04-03  4:23           ` Viresh Kumar
2018-04-03 16:39           ` Sricharan R
2018-04-03 16:39             ` Sricharan R
2018-03-29 21:26 ` [PATCH v4 14/14] dt: qcom: Add qcom-cpufreq-kryo driver configuration Ilia Lin
2018-03-29 21:26   ` Ilia Lin

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