mtd: rawnand: vf610_nfc: remove old hooks
Now that the driver is using ->exec_op(), remove the old hooks. Signed-off-by: Stefan Agner <stefan@agner.ch> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
This commit is contained in:
Stefan Agner
Boris Brezillon
Родитель
1cbe30b0dd
Коммит
ecc40b8df5
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@ -60,21 +60,6 @@
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#define OOB_64 0x0040
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#define OOB_MAX 0x0100
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/*
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* NFC_CMD2[CODE] values. See section:
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* - 31.4.7 Flash Command Code Description, Vybrid manual
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* - 23.8.6 Flash Command Sequencer, MPC5125 manual
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*
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* Briefly these are bitmasks of controller cycles.
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*/
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#define READ_PAGE_CMD_CODE 0x7EE0
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#define READ_ONFI_PARAM_CMD_CODE 0x4860
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#define PROGRAM_PAGE_CMD_CODE 0x7FC0
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#define ERASE_CMD_CODE 0x4EC0
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#define READ_ID_CMD_CODE 0x4804
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#define RESET_CMD_CODE 0x4040
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#define STATUS_READ_CMD_CODE 0x4068
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/* NFC_CMD2[CODE] controller cycle bit masks */
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#define COMMAND_CMD_BYTE1 BIT(14)
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#define COMMAND_CAR_BYTE1 BIT(13)
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@ -162,13 +147,6 @@
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#define ECC_STATUS_MASK 0x80
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#define ECC_STATUS_ERR_COUNT 0x3F
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enum vf610_nfc_alt_buf {
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ALT_BUF_DATA = 0,
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ALT_BUF_ID = 1,
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ALT_BUF_STAT = 2,
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ALT_BUF_ONFI = 3,
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};
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enum vf610_nfc_variant {
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NFC_VFC610 = 1,
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};
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@ -178,13 +156,9 @@ struct vf610_nfc {
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struct device *dev;
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void __iomem *regs;
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struct completion cmd_done;
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uint buf_offset;
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int write_sz;
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/* Status and ID are in alternate locations. */
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enum vf610_nfc_alt_buf alt_buf;
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enum vf610_nfc_variant variant;
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struct clk *clk;
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bool use_hw_ecc;
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/*
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* Indicate that user data is accessed (full page/oob). This is
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* useful to indicate the driver whether to swap byte endianness.
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@ -231,20 +205,6 @@ static inline void vf610_nfc_set_field(struct vf610_nfc *nfc, u32 reg,
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(vf610_nfc_read(nfc, reg) & (~mask)) | val << shift);
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}
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static inline void vf610_nfc_memcpy(void *dst, const void __iomem *src,
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size_t n)
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{
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/*
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* Use this accessor for the internal SRAM buffers. On the ARM
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* Freescale Vybrid SoC it's known that the driver can treat
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* the SRAM buffer as if it's memory. Other platform might need
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* to treat the buffers differently.
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*
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* For the time being, use memcpy
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*/
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memcpy(dst, src, n);
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}
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static inline bool vf610_nfc_kernel_is_little_endian(void)
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{
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#ifdef __LITTLE_ENDIAN
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@ -354,53 +314,6 @@ static void vf610_nfc_done(struct vf610_nfc *nfc)
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vf610_nfc_clear_status(nfc);
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}
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static u8 vf610_nfc_get_id(struct vf610_nfc *nfc, int col)
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{
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u32 flash_id;
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if (col < 4) {
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flash_id = vf610_nfc_read(nfc, NFC_FLASH_STATUS1);
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flash_id >>= (3 - col) * 8;
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} else {
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flash_id = vf610_nfc_read(nfc, NFC_FLASH_STATUS2);
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flash_id >>= 24;
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}
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return flash_id & 0xff;
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}
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static u8 vf610_nfc_get_status(struct vf610_nfc *nfc)
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{
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return vf610_nfc_read(nfc, NFC_FLASH_STATUS2) & STATUS_BYTE1_MASK;
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}
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static void vf610_nfc_send_command(struct vf610_nfc *nfc, u32 cmd_byte1,
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u32 cmd_code)
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{
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u32 tmp;
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vf610_nfc_clear_status(nfc);
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tmp = vf610_nfc_read(nfc, NFC_FLASH_CMD2);
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tmp &= ~(CMD_BYTE1_MASK | CMD_CODE_MASK | BUFNO_MASK);
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tmp |= cmd_byte1 << CMD_BYTE1_SHIFT;
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tmp |= cmd_code << CMD_CODE_SHIFT;
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vf610_nfc_write(nfc, NFC_FLASH_CMD2, tmp);
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}
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static void vf610_nfc_send_commands(struct vf610_nfc *nfc, u32 cmd_byte1,
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u32 cmd_byte2, u32 cmd_code)
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{
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u32 tmp;
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vf610_nfc_send_command(nfc, cmd_byte1, cmd_code);
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tmp = vf610_nfc_read(nfc, NFC_FLASH_CMD1);
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tmp &= ~CMD_BYTE2_MASK;
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tmp |= cmd_byte2 << CMD_BYTE2_SHIFT;
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vf610_nfc_write(nfc, NFC_FLASH_CMD1, tmp);
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}
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static irqreturn_t vf610_nfc_irq(int irq, void *data)
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{
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struct mtd_info *mtd = data;
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@ -412,19 +325,6 @@ static irqreturn_t vf610_nfc_irq(int irq, void *data)
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return IRQ_HANDLED;
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}
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static void vf610_nfc_addr_cycle(struct vf610_nfc *nfc, int column, int page)
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{
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if (column != -1) {
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if (nfc->chip.options & NAND_BUSWIDTH_16)
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column = column / 2;
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vf610_nfc_set_field(nfc, NFC_COL_ADDR, COL_ADDR_MASK,
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COL_ADDR_SHIFT, column);
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}
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if (page != -1)
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vf610_nfc_set_field(nfc, NFC_ROW_ADDR, ROW_ADDR_MASK,
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ROW_ADDR_SHIFT, page);
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}
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static inline void vf610_nfc_ecc_mode(struct vf610_nfc *nfc, int ecc_mode)
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{
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vf610_nfc_set_field(nfc, NFC_FLASH_CONFIG,
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@ -437,169 +337,6 @@ static inline void vf610_nfc_transfer_size(struct vf610_nfc *nfc, int size)
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vf610_nfc_write(nfc, NFC_SECTOR_SIZE, size);
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}
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static void vf610_nfc_command(struct mtd_info *mtd, unsigned command,
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int column, int page)
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{
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struct vf610_nfc *nfc = mtd_to_nfc(mtd);
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int trfr_sz = nfc->chip.options & NAND_BUSWIDTH_16 ? 1 : 0;
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nfc->buf_offset = max(column, 0);
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nfc->alt_buf = ALT_BUF_DATA;
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switch (command) {
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case NAND_CMD_SEQIN:
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/* Use valid column/page from preread... */
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vf610_nfc_addr_cycle(nfc, column, page);
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nfc->buf_offset = 0;
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/*
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* SEQIN => data => PAGEPROG sequence is done by the controller
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* hence we do not need to issue the command here...
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*/
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return;
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case NAND_CMD_PAGEPROG:
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trfr_sz += nfc->write_sz;
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vf610_nfc_transfer_size(nfc, trfr_sz);
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vf610_nfc_send_commands(nfc, NAND_CMD_SEQIN,
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command, PROGRAM_PAGE_CMD_CODE);
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if (nfc->use_hw_ecc)
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vf610_nfc_ecc_mode(nfc, nfc->ecc_mode);
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else
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vf610_nfc_ecc_mode(nfc, ECC_BYPASS);
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break;
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case NAND_CMD_RESET:
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vf610_nfc_transfer_size(nfc, 0);
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vf610_nfc_send_command(nfc, command, RESET_CMD_CODE);
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break;
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case NAND_CMD_READOOB:
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trfr_sz += mtd->oobsize;
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column = mtd->writesize;
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vf610_nfc_transfer_size(nfc, trfr_sz);
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vf610_nfc_send_commands(nfc, NAND_CMD_READ0,
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NAND_CMD_READSTART, READ_PAGE_CMD_CODE);
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vf610_nfc_addr_cycle(nfc, column, page);
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vf610_nfc_ecc_mode(nfc, ECC_BYPASS);
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break;
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case NAND_CMD_READ0:
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trfr_sz += mtd->writesize + mtd->oobsize;
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vf610_nfc_transfer_size(nfc, trfr_sz);
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vf610_nfc_send_commands(nfc, NAND_CMD_READ0,
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NAND_CMD_READSTART, READ_PAGE_CMD_CODE);
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vf610_nfc_addr_cycle(nfc, column, page);
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vf610_nfc_ecc_mode(nfc, nfc->ecc_mode);
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break;
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case NAND_CMD_PARAM:
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nfc->alt_buf = ALT_BUF_ONFI;
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trfr_sz = 3 * sizeof(struct nand_onfi_params);
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vf610_nfc_transfer_size(nfc, trfr_sz);
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vf610_nfc_send_command(nfc, command, READ_ONFI_PARAM_CMD_CODE);
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vf610_nfc_addr_cycle(nfc, -1, column);
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vf610_nfc_ecc_mode(nfc, ECC_BYPASS);
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break;
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case NAND_CMD_ERASE1:
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vf610_nfc_transfer_size(nfc, 0);
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vf610_nfc_send_commands(nfc, command,
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NAND_CMD_ERASE2, ERASE_CMD_CODE);
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vf610_nfc_addr_cycle(nfc, column, page);
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break;
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case NAND_CMD_READID:
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nfc->alt_buf = ALT_BUF_ID;
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nfc->buf_offset = 0;
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vf610_nfc_transfer_size(nfc, 0);
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vf610_nfc_send_command(nfc, command, READ_ID_CMD_CODE);
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vf610_nfc_addr_cycle(nfc, -1, column);
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break;
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case NAND_CMD_STATUS:
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nfc->alt_buf = ALT_BUF_STAT;
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vf610_nfc_transfer_size(nfc, 0);
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vf610_nfc_send_command(nfc, command, STATUS_READ_CMD_CODE);
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break;
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default:
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return;
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}
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vf610_nfc_done(nfc);
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nfc->use_hw_ecc = false;
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nfc->write_sz = 0;
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}
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static void vf610_nfc_read_buf(struct mtd_info *mtd, u_char *buf, int len)
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{
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struct vf610_nfc *nfc = mtd_to_nfc(mtd);
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uint c = nfc->buf_offset;
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/* Alternate buffers are only supported through read_byte */
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WARN_ON(nfc->alt_buf);
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vf610_nfc_memcpy(buf, nfc->regs + NFC_MAIN_AREA(0) + c, len);
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nfc->buf_offset += len;
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}
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static void vf610_nfc_write_buf(struct mtd_info *mtd, const uint8_t *buf,
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int len)
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{
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struct vf610_nfc *nfc = mtd_to_nfc(mtd);
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uint c = nfc->buf_offset;
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uint l;
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l = min_t(uint, len, mtd->writesize + mtd->oobsize - c);
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vf610_nfc_memcpy(nfc->regs + NFC_MAIN_AREA(0) + c, buf, l);
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nfc->write_sz += l;
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nfc->buf_offset += l;
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}
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static uint8_t vf610_nfc_read_byte(struct mtd_info *mtd)
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{
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struct vf610_nfc *nfc = mtd_to_nfc(mtd);
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u8 tmp;
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uint c = nfc->buf_offset;
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switch (nfc->alt_buf) {
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case ALT_BUF_ID:
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tmp = vf610_nfc_get_id(nfc, c);
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break;
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case ALT_BUF_STAT:
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tmp = vf610_nfc_get_status(nfc);
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break;
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#ifdef __LITTLE_ENDIAN
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case ALT_BUF_ONFI:
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/* Reverse byte since the controller uses big endianness */
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c = nfc->buf_offset ^ 0x3;
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/* fall-through */
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#endif
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default:
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tmp = *((u8 *)(nfc->regs + NFC_MAIN_AREA(0) + c));
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break;
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}
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nfc->buf_offset++;
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return tmp;
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}
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static u16 vf610_nfc_read_word(struct mtd_info *mtd)
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{
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u16 tmp;
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vf610_nfc_read_buf(mtd, (u_char *)&tmp, sizeof(tmp));
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return tmp;
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}
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/* If not provided, upper layers apply a fixed delay. */
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static int vf610_nfc_dev_ready(struct mtd_info *mtd)
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{
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/* NFC handles R/B internally; always ready. */
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return 1;
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}
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static inline void vf610_nfc_run(struct vf610_nfc *nfc, u32 col, u32 row,
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u32 cmd1, u32 cmd2, u32 trfr_sz)
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{
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@ -1075,12 +812,6 @@ static int vf610_nfc_probe(struct platform_device *pdev)
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goto err_disable_clk;
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}
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chip->dev_ready = vf610_nfc_dev_ready;
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chip->cmdfunc = vf610_nfc_command;
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chip->read_byte = vf610_nfc_read_byte;
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chip->read_word = vf610_nfc_read_word;
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chip->read_buf = vf610_nfc_read_buf;
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chip->write_buf = vf610_nfc_write_buf;
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chip->exec_op = vf610_nfc_exec_op;
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chip->select_chip = vf610_nfc_select_chip;
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chip->onfi_set_features = nand_onfi_get_set_features_notsupp;
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