// SPDX-License-Identifier: GPL-2.0+ /* * Power domain driver for Broadcom BCM2835 * * Copyright (C) 2018 Broadcom */ #include <dt-bindings/soc/bcm2835-pm.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/mfd/bcm2835-pm.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/pm_domain.h> #include <linux/reset-controller.h> #include <linux/types.h> #define PM_GNRIC … #define PM_AUDIO … #define PM_STATUS … #define PM_RSTC … #define PM_RSTS … #define PM_WDOG … #define PM_PADS0 … #define PM_PADS2 … #define PM_PADS3 … #define PM_PADS4 … #define PM_PADS5 … #define PM_PADS6 … #define PM_CAM0 … #define PM_CAM0_LDOHPEN … #define PM_CAM0_LDOLPEN … #define PM_CAM0_CTRLEN … #define PM_CAM1 … #define PM_CAM1_LDOHPEN … #define PM_CAM1_LDOLPEN … #define PM_CAM1_CTRLEN … #define PM_CCP2TX … #define PM_CCP2TX_LDOEN … #define PM_CCP2TX_CTRLEN … #define PM_DSI0 … #define PM_DSI0_LDOHPEN … #define PM_DSI0_LDOLPEN … #define PM_DSI0_CTRLEN … #define PM_DSI1 … #define PM_DSI1_LDOHPEN … #define PM_DSI1_LDOLPEN … #define PM_DSI1_CTRLEN … #define PM_HDMI … #define PM_HDMI_RSTDR … #define PM_HDMI_LDOPD … #define PM_HDMI_CTRLEN … #define PM_USB … /* The power gates must be enabled with this bit before enabling the LDO in the * USB block. */ #define PM_USB_CTRLEN … #define PM_PXLDO … #define PM_PXBG … #define PM_DFT … #define PM_SMPS … #define PM_XOSC … #define PM_SPAREW … #define PM_SPARER … #define PM_AVS_RSTDR … #define PM_AVS_STAT … #define PM_AVS_EVENT … #define PM_AVS_INTEN … #define PM_DUMMY … #define PM_IMAGE … #define PM_GRAFX … #define PM_PROC … #define PM_ENAB … #define PM_ISPRSTN … #define PM_H264RSTN … #define PM_PERIRSTN … #define PM_V3DRSTN … #define PM_ISFUNC … #define PM_MRDONE … #define PM_MEMREP … #define PM_ISPOW … #define PM_POWOK … #define PM_POWUP … #define PM_INRUSH_SHIFT … #define PM_INRUSH_3_5_MA … #define PM_INRUSH_5_MA … #define PM_INRUSH_10_MA … #define PM_INRUSH_20_MA … #define PM_INRUSH_MASK … #define PM_PASSWORD … #define PM_WDOG_TIME_SET … #define PM_RSTC_WRCFG_CLR … #define PM_RSTS_HADWRH_SET … #define PM_RSTC_WRCFG_SET … #define PM_RSTC_WRCFG_FULL_RESET … #define PM_RSTC_RESET … #define PM_READ(reg) … #define PM_WRITE(reg, val) … #define ASB_BRDG_VERSION … #define ASB_CPR_CTRL … #define ASB_V3D_S_CTRL … #define ASB_V3D_M_CTRL … #define ASB_ISP_S_CTRL … #define ASB_ISP_M_CTRL … #define ASB_H264_S_CTRL … #define ASB_H264_M_CTRL … #define ASB_REQ_STOP … #define ASB_ACK … #define ASB_EMPTY … #define ASB_FULL … #define ASB_AXI_BRDG_ID … #define BCM2835_BRDG_ID … struct bcm2835_power_domain { … }; struct bcm2835_power { … }; static int bcm2835_asb_control(struct bcm2835_power *power, u32 reg, bool enable) { … } static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg) { … } static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg) { … } static int bcm2835_power_power_off(struct bcm2835_power_domain *pd, u32 pm_reg) { … } static int bcm2835_power_power_on(struct bcm2835_power_domain *pd, u32 pm_reg) { … } static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd, u32 pm_reg, u32 asb_m_reg, u32 asb_s_reg, u32 reset_flags) { … } static int bcm2835_asb_power_off(struct bcm2835_power_domain *pd, u32 pm_reg, u32 asb_m_reg, u32 asb_s_reg, u32 reset_flags) { … } static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain) { … } static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain) { … } static int bcm2835_init_power_domain(struct bcm2835_power *power, int pd_xlate_index, const char *name) { … } /** bcm2835_reset_reset - Resets a block that has a reset line in the * PM block. * * The consumer of the reset controller must have the power domain up * -- there's no reset ability with the power domain down. To reset * the sub-block, we just disable its access to memory through the * ASB, reset, and re-enable. */ static int bcm2835_reset_reset(struct reset_controller_dev *rcdev, unsigned long id) { … } static int bcm2835_reset_status(struct reset_controller_dev *rcdev, unsigned long id) { … } static const struct reset_control_ops bcm2835_reset_ops = …; static const char *const power_domain_names[] = …; static int bcm2835_power_probe(struct platform_device *pdev) { … } static struct platform_driver bcm2835_power_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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