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| 1 | +// SPDX-License-Identifier: GPL-2.0-only |
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1 | 2 | /* |
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2 | 3 | * Copyright (c) 2015 Linaro Ltd. |
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3 | 4 | * Author: Pi-Cheng Chen <pi-cheng.chen@linaro.org> |
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4 | | - * |
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5 | | - * This program is free software; you can redistribute it and/or modify |
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6 | | - * it under the terms of the GNU General Public License version 2 as |
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7 | | - * published by the Free Software Foundation. |
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8 | | - * |
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9 | | - * This program is distributed in the hope that it will be useful, |
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10 | | - * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | | - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | | - * GNU General Public License for more details. |
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13 | 5 | */ |
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14 | 6 | |
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15 | 7 | #include <linux/clk.h> |
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16 | 8 | #include <linux/cpu.h> |
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17 | | -#include <linux/cpu_cooling.h> |
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18 | 9 | #include <linux/cpufreq.h> |
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19 | 10 | #include <linux/cpumask.h> |
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20 | 11 | #include <linux/module.h> |
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.. | .. |
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48 | 39 | struct regulator *sram_reg; |
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49 | 40 | struct clk *cpu_clk; |
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50 | 41 | struct clk *inter_clk; |
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51 | | - struct thermal_cooling_device *cdev; |
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52 | 42 | struct list_head list_head; |
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53 | 43 | int intermediate_voltage; |
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54 | 44 | bool need_voltage_tracking; |
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55 | 45 | }; |
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| 46 | + |
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| 47 | +static struct platform_device *cpufreq_pdev; |
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56 | 48 | |
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57 | 49 | static LIST_HEAD(dvfs_info_list); |
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58 | 50 | |
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.. | .. |
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307 | 299 | |
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308 | 300 | #define DYNAMIC_POWER "dynamic-power-coefficient" |
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309 | 301 | |
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310 | | -static void mtk_cpufreq_ready(struct cpufreq_policy *policy) |
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311 | | -{ |
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312 | | - struct mtk_cpu_dvfs_info *info = policy->driver_data; |
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313 | | - |
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314 | | - info->cdev = of_cpufreq_cooling_register(policy); |
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315 | | -} |
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316 | | - |
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317 | 302 | static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) |
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318 | 303 | { |
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319 | 304 | struct device *cpu_dev; |
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.. | .. |
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355 | 340 | goto out_free_resources; |
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356 | 341 | } |
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357 | 342 | |
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358 | | - proc_reg = regulator_get_exclusive(cpu_dev, "proc"); |
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| 343 | + proc_reg = regulator_get_optional(cpu_dev, "proc"); |
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359 | 344 | if (IS_ERR(proc_reg)) { |
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360 | 345 | if (PTR_ERR(proc_reg) == -EPROBE_DEFER) |
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361 | 346 | pr_warn("proc regulator for cpu%d not ready, retry.\n", |
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.. | .. |
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465 | 450 | policy->driver_data = info; |
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466 | 451 | policy->clk = info->cpu_clk; |
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467 | 452 | |
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| 453 | + dev_pm_opp_of_register_em(info->cpu_dev, policy->cpus); |
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| 454 | + |
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468 | 455 | return 0; |
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469 | 456 | } |
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470 | 457 | |
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.. | .. |
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472 | 459 | { |
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473 | 460 | struct mtk_cpu_dvfs_info *info = policy->driver_data; |
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474 | 461 | |
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475 | | - cpufreq_cooling_unregister(info->cdev); |
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476 | 462 | dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table); |
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477 | 463 | |
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478 | 464 | return 0; |
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.. | .. |
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480 | 466 | |
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481 | 467 | static struct cpufreq_driver mtk_cpufreq_driver = { |
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482 | 468 | .flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK | |
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483 | | - CPUFREQ_HAVE_GOVERNOR_PER_POLICY, |
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| 469 | + CPUFREQ_HAVE_GOVERNOR_PER_POLICY | |
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| 470 | + CPUFREQ_IS_COOLING_DEV, |
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484 | 471 | .verify = cpufreq_generic_frequency_table_verify, |
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485 | 472 | .target_index = mtk_cpufreq_set_target, |
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486 | 473 | .get = cpufreq_generic_get, |
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487 | 474 | .init = mtk_cpufreq_init, |
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488 | 475 | .exit = mtk_cpufreq_exit, |
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489 | | - .ready = mtk_cpufreq_ready, |
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490 | 476 | .name = "mtk-cpufreq", |
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491 | 477 | .attr = cpufreq_generic_attr, |
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492 | 478 | }; |
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.. | .. |
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551 | 537 | { .compatible = "mediatek,mt817x", }, |
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552 | 538 | { .compatible = "mediatek,mt8173", }, |
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553 | 539 | { .compatible = "mediatek,mt8176", }, |
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| 540 | + { .compatible = "mediatek,mt8183", }, |
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| 541 | + { .compatible = "mediatek,mt8516", }, |
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554 | 542 | |
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555 | 543 | { } |
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556 | 544 | }; |
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.. | .. |
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560 | 548 | { |
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561 | 549 | struct device_node *np; |
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562 | 550 | const struct of_device_id *match; |
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563 | | - struct platform_device *pdev; |
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564 | 551 | int err; |
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565 | 552 | |
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566 | 553 | np = of_find_node_by_path("/"); |
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.. | .. |
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584 | 571 | * and the device registration codes are put here to handle defer |
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585 | 572 | * probing. |
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586 | 573 | */ |
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587 | | - pdev = platform_device_register_simple("mtk-cpufreq", -1, NULL, 0); |
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588 | | - if (IS_ERR(pdev)) { |
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| 574 | + cpufreq_pdev = platform_device_register_simple("mtk-cpufreq", -1, NULL, 0); |
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| 575 | + if (IS_ERR(cpufreq_pdev)) { |
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589 | 576 | pr_err("failed to register mtk-cpufreq platform device\n"); |
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590 | | - return PTR_ERR(pdev); |
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| 577 | + platform_driver_unregister(&mtk_cpufreq_platdrv); |
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| 578 | + return PTR_ERR(cpufreq_pdev); |
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591 | 579 | } |
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592 | 580 | |
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593 | 581 | return 0; |
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594 | 582 | } |
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595 | | -device_initcall(mtk_cpufreq_driver_init); |
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| 583 | +module_init(mtk_cpufreq_driver_init) |
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| 584 | + |
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| 585 | +static void __exit mtk_cpufreq_driver_exit(void) |
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| 586 | +{ |
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| 587 | + platform_device_unregister(cpufreq_pdev); |
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| 588 | + platform_driver_unregister(&mtk_cpufreq_platdrv); |
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| 589 | +} |
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| 590 | +module_exit(mtk_cpufreq_driver_exit) |
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596 | 591 | |
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597 | 592 | MODULE_DESCRIPTION("MediaTek CPUFreq driver"); |
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598 | 593 | MODULE_AUTHOR("Pi-Cheng Chen <pi-cheng.chen@linaro.org>"); |
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