// SPDX-License-Identifier: GPL-2.0-or-later /* Copyright (C) 2019 ASPEED Technology Inc. */ /* Copyright (C) 2019 IBM Corp. */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/io.h> #include <linux/math64.h> #include <linux/mmc/host.h> #include <linux/module.h> #include <linux/of_address.h> #include <linux/of.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/spinlock.h> #include "sdhci-pltfm.h" #define ASPEED_SDC_INFO … #define ASPEED_SDC_S1_MMC8 … #define ASPEED_SDC_S0_MMC8 … #define ASPEED_SDC_PHASE … #define ASPEED_SDC_S1_PHASE_IN … #define ASPEED_SDC_S0_PHASE_IN … #define ASPEED_SDC_S1_PHASE_OUT … #define ASPEED_SDC_S1_PHASE_IN_EN … #define ASPEED_SDC_S1_PHASE_OUT_EN … #define ASPEED_SDC_S0_PHASE_OUT … #define ASPEED_SDC_S0_PHASE_IN_EN … #define ASPEED_SDC_S0_PHASE_OUT_EN … #define ASPEED_SDC_PHASE_MAX … /* SDIO{10,20} */ #define ASPEED_SDC_CAP1_1_8V … /* SDIO{14,24} */ #define ASPEED_SDC_CAP2_SDR104 … struct aspeed_sdc { … }; struct aspeed_sdhci_tap_param { … }; struct aspeed_sdhci_tap_desc { … }; struct aspeed_sdhci_phase_desc { … }; struct aspeed_sdhci_pdata { … }; struct aspeed_sdhci { … }; /* * The function sets the mirror register for updating * capbilities of the current slot. * * slot | capability | caps_reg | mirror_reg * -----|-------------|----------|------------ * 0 | CAP1_1_8V | SDIO140 | SDIO10 * 0 | CAP2_SDR104 | SDIO144 | SDIO14 * 1 | CAP1_1_8V | SDIO240 | SDIO20 * 1 | CAP2_SDR104 | SDIO244 | SDIO24 */ static void aspeed_sdc_set_slot_capability(struct sdhci_host *host, struct aspeed_sdc *sdc, int capability, bool enable, u8 slot) { … } static void aspeed_sdc_configure_8bit_mode(struct aspeed_sdc *sdc, struct aspeed_sdhci *sdhci, bool bus8) { … } static u32 aspeed_sdc_set_phase_tap(const struct aspeed_sdhci_tap_desc *desc, u8 tap, bool enable, u32 reg) { … } static void aspeed_sdc_set_phase_taps(struct aspeed_sdc *sdc, const struct aspeed_sdhci_phase_desc *desc, const struct aspeed_sdhci_tap_param *taps) { … } #define PICOSECONDS_PER_SECOND … #define ASPEED_SDHCI_NR_TAPS … /* Measured value with *handwave* environmentals and static loading */ #define ASPEED_SDHCI_MAX_TAP_DELAY_PS … static int aspeed_sdhci_phase_to_tap(struct device *dev, unsigned long rate_hz, int phase_deg) { … } static void aspeed_sdhci_phases_to_taps(struct device *dev, unsigned long rate, const struct mmc_clk_phase *phases, struct aspeed_sdhci_tap_param *taps) { … } static void aspeed_sdhci_configure_phase(struct sdhci_host *host, unsigned long rate) { … } static void aspeed_sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { … } static unsigned int aspeed_sdhci_get_max_clock(struct sdhci_host *host) { … } static void aspeed_sdhci_set_bus_width(struct sdhci_host *host, int width) { … } static u32 aspeed_sdhci_readl(struct sdhci_host *host, int reg) { … } static const struct sdhci_ops aspeed_sdhci_ops = …; static const struct sdhci_pltfm_data aspeed_sdhci_pdata = …; static inline int aspeed_sdhci_calculate_slot(struct aspeed_sdhci *dev, struct resource *res) { … } static int aspeed_sdhci_probe(struct platform_device *pdev) { … } static void aspeed_sdhci_remove(struct platform_device *pdev) { … } static const struct aspeed_sdhci_pdata ast2400_sdhci_pdata = …; static const struct aspeed_sdhci_phase_desc ast2600_sdhci_phase[] = …; static const struct aspeed_sdhci_pdata ast2600_sdhci_pdata = …; static const struct of_device_id aspeed_sdhci_of_match[] = …; static struct platform_driver aspeed_sdhci_driver = …; static int aspeed_sdc_probe(struct platform_device *pdev) { … } static void aspeed_sdc_remove(struct platform_device *pdev) { … } static const struct of_device_id aspeed_sdc_of_match[] = …; MODULE_DEVICE_TABLE(of, aspeed_sdc_of_match); static struct platform_driver aspeed_sdc_driver = …; #if defined(CONFIG_MMC_SDHCI_OF_ASPEED_TEST) #include "sdhci-of-aspeed-test.c" #endif static int __init aspeed_sdc_init(void) { … } module_init(…) …; static void __exit aspeed_sdc_exit(void) { … } module_exit(aspeed_sdc_exit); MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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