soc: qcom: add llcc support for sdm670 (9cecdb22) · Commits · e / devices / android_kernel_fairphone_FP3

Documentation/devicetree/bindings/arm/msm/qcom,llcc.txt

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		@@ -81,6 +81,10 @@ Optional Properties:
		-qcom,fg-cnt : The value of fine grained counter of activity monitor
		block.

		compatible devices:
		qcom,sdm845-llcc,
		qcom,sdm670-llcc

		Example:

		qcom,llcc@01300000 {

drivers/soc/qcom/Kconfig

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		@@ -43,6 +43,16 @@ config QCOM_SDM845_LLCC
		data required to configure LLCC so that clients can start using the
		LLCC slices.

		config QCOM_SDM670_LLCC
		tristate "Qualcomm Technologies, Inc. SDM670 LLCC driver"
		depends on QCOM_LLCC
		help
		This provides Last level cache controller driver for SDM670.
		This driver provides data required to configure LLCC, so that clients
		can start using the LLCC slices.
		Say yes here to enable llcc driver for SDM670.


		config QCOM_LLCC_AMON
		tristate "Qualcomm Technologies, Inc. LLCC Activity Monitor(AMON) driver"
		depends on QCOM_LLCC

drivers/soc/qcom/Makefile

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		@@ -3,6 +3,7 @@ obj-$(CONFIG_QCOM_CPUSS_DUMP) += cpuss_dump.o
		obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o
		obj-$(CONFIG_QCOM_LLCC) += llcc-core.o llcc-slice.o
		obj-$(CONFIG_QCOM_SDM845_LLCC) += llcc-sdm845.o
		obj-$(CONFIG_QCOM_SDM670_LLCC) += llcc-sdm670.o
		obj-$(CONFIG_QCOM_LLCC_AMON) += llcc-amon.o
		obj-$(CONFIG_QPNP_PBS) += qpnp-pbs.o
		obj-$(CONFIG_QCOM_PM) += spm.o

drivers/soc/qcom/llcc-sdm670.c

0 → 100644

+103 −0

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		/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		* only version 2 as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/of.h>
		#include <linux/platform_device.h>
		#include <linux/soc/qcom/llcc-qcom.h>

		/*
		* SCT entry contains of the following parameters
		* name: Name of the client's use case for which the llcc slice is used
		* uid: Unique id for the client's use case
		* slice_id: llcc slice id for each client
		* max_cap: The maximum capacity of the cache slice provided in KB
		* priority: Priority of the client used to select victim line for replacement
		* fixed_size: Determine of the slice has a fixed capacity
		* bonus_ways: Bonus ways to be used by any slice, bonus way is used only if
		* it't not a reserved way.
		* res_ways: Reserved ways for the cache slice, the reserved ways cannot be used
		* by any other client than the one its assigned to.
		* cache_mode: Each slice operates as a cache, this controls the mode of the
		* slice normal or TCM
		* probe_target_ways: Determines what ways to probe for access hit. When
		* configured to 1 only bonus and reseved ways are probed.
		* when configured to 0 all ways in llcc are probed.
		* dis_cap_alloc: Disable capacity based allocation for a client
		* retain_on_pc: If this bit is set and client has maitained active vote
		* then the ways assigned to this client are not flushed on power
		* collapse.
		* activate_on_init: Activate the slice immidiately after the SCT is programmed
		*/
		#define SCT_ENTRY(n, uid, sid, mc, p, fs, bway, rway, cmod, ptw, dca, rp, a) \
		{ \
		.name = n, \
		.usecase_id = uid, \
		.slice_id = sid, \
		.max_cap = mc, \
		.priority = p, \
		.fixed_size = fs, \
		.bonus_ways = bway, \
		.res_ways = rway, \
		.cache_mode = cmod, \
		.probe_target_ways = ptw, \
		.dis_cap_alloc = dca, \
		.retain_on_pc = rp, \
		.activate_on_init = a, \
		}

		static struct llcc_slice_config sdm670_data[] = {
		SCT_ENTRY("cpuss", 1, 1, 512, 1, 1, 0xF, 0x0, 0, 0, 0, 1, 1),
		SCT_ENTRY("vidsc0", 2, 2, 64, 2, 1, 0xF, 0x0, 0, 0, 0, 1, 0),
		SCT_ENTRY("vidsc1", 3, 3, 64, 2, 1, 0xF, 0x0, 0, 0, 0, 1, 0),
		SCT_ENTRY("rotator", 4, 4, 384, 2, 1, 0xF, 0x0, 0, 0, 0, 1, 0),
		SCT_ENTRY("modem", 8, 8, 512, 1, 0, 0xF, 0x0, 0, 0, 0, 1, 0),
		SCT_ENTRY("gpuhtw", 11, 11, 128, 1, 1, 0xF, 0x0, 0, 0, 0, 1, 0),
		SCT_ENTRY("gpu", 12, 12, 384, 1, 1, 0xF, 0x0, 0, 0, 0, 1, 0),
		};

		static int sdm670_qcom_llcc_probe(struct platform_device *pdev)
		{
		return qcom_llcc_probe(pdev, sdm670_data,
		ARRAY_SIZE(sdm670_data));
		}

		static const struct of_device_id sdm670_qcom_llcc_of_match[] = {
		{ .compatible = "qcom,sdm670-llcc", },
		{ },
		};

		static struct platform_driver sdm670_qcom_llcc_driver = {
		.driver = {
		.name = "sdm670-llcc",
		.owner = THIS_MODULE,
		.of_match_table = sdm670_qcom_llcc_of_match,
		},
		.probe = sdm670_qcom_llcc_probe,
		.remove = qcom_llcc_remove,
		};

		static int __init sdm670_init_qcom_llcc_init(void)
		{
		return platform_driver_register(&sdm670_qcom_llcc_driver);
		}
		module_init(sdm670_init_qcom_llcc_init);

		static void __exit sdm670_exit_qcom_llcc_exit(void)
		{
		platform_driver_unregister(&sdm670_qcom_llcc_driver);
		}
		module_exit(sdm670_exit_qcom_llcc_exit);

		MODULE_DESCRIPTION("QTI sdm670 LLCC driver");
		MODULE_LICENSE("GPL v2");