projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| cb849fc5 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| fa236a7e KD |
2 | /* |
| 3 | * Copyright 2016 Broadcom | |
| fa236a7e KD |
4 | */ |
| 5 | ||
| 6 | #ifndef __SPI_BCM_QSPI_H__ | |
| 7 | #define __SPI_BCM_QSPI_H__ | |
| 8 | ||
| 9 | #include <linux/types.h> | |
| 10 | #include <linux/io.h> | |
| 11 | ||
| 4e3b2d23 KD |
12 | /* BSPI interrupt masks */ |
| 13 | #define INTR_BSPI_LR_OVERREAD_MASK BIT(4) | |
| 14 | #define INTR_BSPI_LR_SESSION_DONE_MASK BIT(3) | |
| 15 | #define INTR_BSPI_LR_IMPATIENT_MASK BIT(2) | |
| 16 | #define INTR_BSPI_LR_SESSION_ABORTED_MASK BIT(1) | |
| 17 | #define INTR_BSPI_LR_FULLNESS_REACHED_MASK BIT(0) | |
| 18 | ||
| 19 | #define BSPI_LR_INTERRUPTS_DATA \ | |
| 20 | (INTR_BSPI_LR_SESSION_DONE_MASK | \ | |
| 21 | INTR_BSPI_LR_FULLNESS_REACHED_MASK) | |
| 22 | ||
| 23 | #define BSPI_LR_INTERRUPTS_ERROR \ | |
| 24 | (INTR_BSPI_LR_OVERREAD_MASK | \ | |
| 25 | INTR_BSPI_LR_IMPATIENT_MASK | \ | |
| 26 | INTR_BSPI_LR_SESSION_ABORTED_MASK) | |
| 27 | ||
| 28 | #define BSPI_LR_INTERRUPTS_ALL \ | |
| 29 | (BSPI_LR_INTERRUPTS_ERROR | \ | |
| 30 | BSPI_LR_INTERRUPTS_DATA) | |
| 31 | ||
| fa236a7e KD |
32 | /* MSPI Interrupt masks */ |
| 33 | #define INTR_MSPI_HALTED_MASK BIT(6) | |
| 34 | #define INTR_MSPI_DONE_MASK BIT(5) | |
| 35 | ||
| 36 | #define MSPI_INTERRUPTS_ALL \ | |
| 37 | (INTR_MSPI_DONE_MASK | \ | |
| 38 | INTR_MSPI_HALTED_MASK) | |
| 39 | ||
| cc20a386 KD |
40 | #define QSPI_INTERRUPTS_ALL \ |
| 41 | (MSPI_INTERRUPTS_ALL | \ | |
| 42 | BSPI_LR_INTERRUPTS_ALL) | |
| 43 | ||
| fa236a7e KD |
44 | struct platform_device; |
| 45 | struct dev_pm_ops; | |
| 46 | ||
| cc20a386 KD |
47 | enum { |
| 48 | MSPI_DONE = 0x1, | |
| 49 | BSPI_DONE = 0x2, | |
| 50 | BSPI_ERR = 0x4, | |
| 51 | MSPI_BSPI_DONE = 0x7 | |
| 52 | }; | |
| 53 | ||
| 54 | struct bcm_qspi_soc_intc { | |
| 55 | void (*bcm_qspi_int_ack)(struct bcm_qspi_soc_intc *soc_intc, int type); | |
| 56 | void (*bcm_qspi_int_set)(struct bcm_qspi_soc_intc *soc_intc, int type, | |
| 57 | bool en); | |
| 58 | u32 (*bcm_qspi_get_int_status)(struct bcm_qspi_soc_intc *soc_intc); | |
| 59 | }; | |
| fa236a7e KD |
60 | |
| 61 | /* Read controller register*/ | |
| 62 | static inline u32 bcm_qspi_readl(bool be, void __iomem *addr) | |
| 63 | { | |
| 64 | if (be) | |
| 65 | return ioread32be(addr); | |
| 66 | else | |
| 67 | return readl_relaxed(addr); | |
| 68 | } | |
| 69 | ||
| 70 | /* Write controller register*/ | |
| 71 | static inline void bcm_qspi_writel(bool be, | |
| 72 | unsigned int data, void __iomem *addr) | |
| 73 | { | |
| 74 | if (be) | |
| 75 | iowrite32be(data, addr); | |
| 76 | else | |
| 77 | writel_relaxed(data, addr); | |
| 78 | } | |
| 79 | ||
| cc20a386 KD |
80 | static inline u32 get_qspi_mask(int type) |
| 81 | { | |
| 82 | switch (type) { | |
| 83 | case MSPI_DONE: | |
| 84 | return INTR_MSPI_DONE_MASK; | |
| 85 | case BSPI_DONE: | |
| 86 | return BSPI_LR_INTERRUPTS_ALL; | |
| 87 | case MSPI_BSPI_DONE: | |
| 88 | return QSPI_INTERRUPTS_ALL; | |
| 89 | case BSPI_ERR: | |
| 90 | return BSPI_LR_INTERRUPTS_ERROR; | |
| 91 | } | |
| 92 | ||
| 93 | return 0; | |
| 94 | } | |
| 95 | ||
| fa236a7e KD |
96 | /* The common driver functions to be called by the SoC platform driver */ |
| 97 | int bcm_qspi_probe(struct platform_device *pdev, | |
| 98 | struct bcm_qspi_soc_intc *soc_intc); | |
| 666ea0ad | 99 | void bcm_qspi_remove(struct platform_device *pdev); |
| fa236a7e KD |
100 | |
| 101 | /* pm_ops used by the SoC platform driver called on PM suspend/resume */ | |
| 102 | extern const struct dev_pm_ops bcm_qspi_pm_ops; | |
| 103 | ||
| 104 | #endif /* __SPI_BCM_QSPI_H__ */ |