| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Huang Shijie | 476 | 77.65% | 6 | 33.33% |
| Miquel Raynal | 59 | 9.62% | 2 | 11.11% |
| Boris Brezillon | 29 | 4.73% | 4 | 22.22% |
| Sascha Hauer | 24 | 3.92% | 2 | 11.11% |
| Stefan Agner | 22 | 3.59% | 2 | 11.11% |
| Fabio Estevam | 2 | 0.33% | 1 | 5.56% |
| Shawn Guo | 1 | 0.16% | 1 | 5.56% |
| Total | 613 | 18 |
/* SPDX-License-Identifier: GPL-2.0+ */ /* * Freescale GPMI NAND Flash Driver * * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. * Copyright (C) 2008 Embedded Alley Solutions, Inc. */ #ifndef __DRIVERS_MTD_NAND_GPMI_NAND_H #define __DRIVERS_MTD_NAND_GPMI_NAND_H #include <linux/mtd/rawnand.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #define GPMI_CLK_MAX 5 /* MX6Q needs five clocks */ struct resources { void __iomem *gpmi_regs; void __iomem *bch_regs; unsigned int dma_low_channel; unsigned int dma_high_channel; struct clk *clock[GPMI_CLK_MAX]; }; /** * struct bch_geometry - BCH geometry description. * @gf_len: The length of Galois Field. (e.g., 13 or 14) * @ecc_strength: A number that describes the strength of the ECC * algorithm. * @page_size: The size, in bytes, of a physical page, including * both data and OOB. * @metadata_size: The size, in bytes, of the metadata. * @ecc_chunk_size: The size, in bytes, of a single ECC chunk. Note * the first chunk in the page includes both data and * metadata, so it's a bit larger than this value. * @ecc_chunk_count: The number of ECC chunks in the page, * @payload_size: The size, in bytes, of the payload buffer. * @auxiliary_size: The size, in bytes, of the auxiliary buffer. * @auxiliary_status_offset: The offset into the auxiliary buffer at which * the ECC status appears. * @block_mark_byte_offset: The byte offset in the ECC-based page view at * which the underlying physical block mark appears. * @block_mark_bit_offset: The bit offset into the ECC-based page view at * which the underlying physical block mark appears. */ struct bch_geometry { unsigned int gf_len; unsigned int ecc_strength; unsigned int page_size; unsigned int metadata_size; unsigned int ecc_chunk_size; unsigned int ecc_chunk_count; unsigned int payload_size; unsigned int auxiliary_size; unsigned int auxiliary_status_offset; unsigned int block_mark_byte_offset; unsigned int block_mark_bit_offset; }; /** * struct boot_rom_geometry - Boot ROM geometry description. * @stride_size_in_pages: The size of a boot block stride, in pages. * @search_area_stride_exponent: The logarithm to base 2 of the size of a * search area in boot block strides. */ struct boot_rom_geometry { unsigned int stride_size_in_pages; unsigned int search_area_stride_exponent; }; enum gpmi_type { IS_MX23, IS_MX28, IS_MX6Q, IS_MX6SX, IS_MX7D, }; struct gpmi_devdata { enum gpmi_type type; int bch_max_ecc_strength; int max_chain_delay; /* See the async EDO mode */ const char * const *clks; const int clks_count; }; /** * struct gpmi_nfc_hardware_timing - GPMI hardware timing parameters. * @must_apply_timings: Whether controller timings have already been * applied or not (useful only while there is * support for only one chip select) * @clk_rate: The clock rate that must be used to derive the * following parameters * @timing0: HW_GPMI_TIMING0 register * @timing1: HW_GPMI_TIMING1 register * @ctrl1n: HW_GPMI_CTRL1n register */ struct gpmi_nfc_hardware_timing { bool must_apply_timings; unsigned long int clk_rate; u32 timing0; u32 timing1; u32 ctrl1n; }; struct gpmi_nand_data { /* Devdata */ const struct gpmi_devdata *devdata; /* System Interface */ struct device *dev; struct platform_device *pdev; /* Resources */ struct resources resources; /* Flash Hardware */ struct gpmi_nfc_hardware_timing hw; /* BCH */ struct bch_geometry bch_geometry; struct completion bch_done; /* NAND Boot issue */ bool swap_block_mark; struct boot_rom_geometry rom_geometry; /* MTD / NAND */ struct nand_chip nand; /* General-use Variables */ int current_chip; unsigned int command_length; struct scatterlist cmd_sgl; char *cmd_buffer; struct scatterlist data_sgl; char *data_buffer_dma; void *page_buffer_virt; dma_addr_t page_buffer_phys; unsigned int page_buffer_size; void *payload_virt; dma_addr_t payload_phys; void *auxiliary_virt; dma_addr_t auxiliary_phys; void *raw_buffer; /* DMA channels */ #define DMA_CHANS 8 struct dma_chan *dma_chans[DMA_CHANS]; struct completion dma_done; /* private */ void *private; }; /* Common Services */ int common_nfc_set_geometry(struct gpmi_nand_data *); struct dma_chan *get_dma_chan(struct gpmi_nand_data *); bool prepare_data_dma(struct gpmi_nand_data *, const void *buf, int len, enum dma_data_direction dr); int start_dma_without_bch_irq(struct gpmi_nand_data *, struct dma_async_tx_descriptor *); int start_dma_with_bch_irq(struct gpmi_nand_data *, struct dma_async_tx_descriptor *); /* GPMI-NAND helper function library */ int gpmi_init(struct gpmi_nand_data *); void gpmi_clear_bch(struct gpmi_nand_data *); void gpmi_dump_info(struct gpmi_nand_data *); int bch_set_geometry(struct gpmi_nand_data *); int gpmi_is_ready(struct gpmi_nand_data *, unsigned chip); int gpmi_send_command(struct gpmi_nand_data *); int gpmi_enable_clk(struct gpmi_nand_data *this); int gpmi_disable_clk(struct gpmi_nand_data *this); int gpmi_setup_data_interface(struct nand_chip *chip, int chipnr, const struct nand_data_interface *conf); void gpmi_nfc_apply_timings(struct gpmi_nand_data *this); int gpmi_read_data(struct gpmi_nand_data *, void *buf, int len); int gpmi_send_data(struct gpmi_nand_data *, const void *buf, int len); int gpmi_send_page(struct gpmi_nand_data *, dma_addr_t payload, dma_addr_t auxiliary); int gpmi_read_page(struct gpmi_nand_data *, dma_addr_t payload, dma_addr_t auxiliary); void gpmi_copy_bits(u8 *dst, size_t dst_bit_off, const u8 *src, size_t src_bit_off, size_t nbits); /* BCH : Status Block Completion Codes */ #define STATUS_GOOD 0x00 #define STATUS_ERASED 0xff #define STATUS_UNCORRECTABLE 0xfe /* Use the devdata to distinguish different Archs. */ #define GPMI_IS_MX23(x) ((x)->devdata->type == IS_MX23) #define GPMI_IS_MX28(x) ((x)->devdata->type == IS_MX28) #define GPMI_IS_MX6Q(x) ((x)->devdata->type == IS_MX6Q) #define GPMI_IS_MX6SX(x) ((x)->devdata->type == IS_MX6SX) #define GPMI_IS_MX7D(x) ((x)->devdata->type == IS_MX7D) #define GPMI_IS_MX6(x) (GPMI_IS_MX6Q(x) || GPMI_IS_MX6SX(x) || \ GPMI_IS_MX7D(x)) #endif
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