diff options
Diffstat (limited to 'target/linux/ar71xx')
5 files changed, 8 insertions, 208 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/rb4xx_cpld.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/rb4xx_cpld.h index 5b17e94b64..37512ba1a1 100644 --- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/rb4xx_cpld.h +++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ath79/rb4xx_cpld.h @@ -39,10 +39,5 @@ struct rb4xx_cpld_platform_data { extern int rb4xx_cpld_change_cfg(unsigned mask, unsigned value); extern int rb4xx_cpld_read(unsigned char *rx_buf, - const unsigned char *verify_buf, unsigned cnt); -extern int rb4xx_cpld_read_from(unsigned addr, - unsigned char *rx_buf, - const unsigned char *verify_buf, - unsigned cnt); extern int rb4xx_cpld_write(const unsigned char *buf, unsigned count); diff --git a/target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c b/target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c index 5b9841b76b..981bfcf69d 100644 --- a/target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c +++ b/target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c @@ -107,7 +107,7 @@ static unsigned char rb4xx_nand_read_byte(struct mtd_info *mtd) unsigned char data = 0; int err; - err = rb4xx_cpld_read(&data, NULL, 1); + err = rb4xx_cpld_read(&data, 1); if (err) { pr_err("rb4xx_nand: read data failed, err=%d\n", err); data = 0xff; @@ -131,7 +131,7 @@ static void rb4xx_nand_read_buf(struct mtd_info *mtd, unsigned char *buf, { int err; - err = rb4xx_cpld_read(buf, NULL, len); + err = rb4xx_cpld_read(buf, len); if (err) pr_err("rb4xx_nand: read buf failed, err=%d\n", err); } diff --git a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx-cpld.c b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx-cpld.c index a8d52825eb..f6ec350525 100644 --- a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx-cpld.c +++ b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx-cpld.c @@ -131,73 +131,7 @@ int rb4xx_cpld_change_cfg(unsigned mask, unsigned value) } EXPORT_SYMBOL_GPL(rb4xx_cpld_change_cfg); -int rb4xx_cpld_read_from(unsigned addr, unsigned char *rx_buf, - const unsigned char *verify_buf, unsigned count) -{ - const unsigned char cmd[5] = { - CPLD_CMD_READ_FAST, - (addr >> 16) & 0xff, - (addr >> 8) & 0xff, - addr & 0xff, - 0 - }; - struct spi_transfer t[2] = { - { - .tx_buf = &cmd, - .len = 5, - }, - { - .tx_buf = verify_buf, - .rx_buf = rx_buf, - .len = count, - .verify = (verify_buf != NULL), - }, - }; - struct spi_message m; - - if (rb4xx_cpld == NULL) - return -ENODEV; - - spi_message_init(&m); - m.fast_read = 1; - spi_message_add_tail(&t[0], &m); - spi_message_add_tail(&t[1], &m); - return spi_sync(rb4xx_cpld->spi, &m); -} -EXPORT_SYMBOL_GPL(rb4xx_cpld_read_from); - -#if 0 -int rb4xx_cpld_read(unsigned char *buf, unsigned char *verify_buf, - unsigned count) -{ - struct spi_transfer t[2]; - struct spi_message m; - unsigned char cmd[2]; - - if (rb4xx_cpld == NULL) - return -ENODEV; - - spi_message_init(&m); - memset(&t, 0, sizeof(t)); - - /* send command */ - t[0].tx_buf = cmd; - t[0].len = sizeof(cmd); - spi_message_add_tail(&t[0], &m); - - cmd[0] = CPLD_CMD_READ_NAND; - cmd[1] = 0; - - /* read data */ - t[1].rx_buf = buf; - t[1].len = count; - spi_message_add_tail(&t[1], &m); - - return spi_sync(rb4xx_cpld->spi, &m); -} -#else -int rb4xx_cpld_read(unsigned char *rx_buf, const unsigned char *verify_buf, - unsigned count) +int rb4xx_cpld_read(unsigned char *rx_buf, unsigned count) { static const unsigned char cmd[2] = { CPLD_CMD_READ_NAND, 0 }; struct spi_transfer t[2] = { @@ -205,10 +139,8 @@ int rb4xx_cpld_read(unsigned char *rx_buf, const unsigned char *verify_buf, .tx_buf = &cmd, .len = 2, }, { - .tx_buf = verify_buf, .rx_buf = rx_buf, .len = count, - .verify = (verify_buf != NULL), }, }; struct spi_message m; @@ -221,40 +153,10 @@ int rb4xx_cpld_read(unsigned char *rx_buf, const unsigned char *verify_buf, spi_message_add_tail(&t[1], &m); return spi_sync(rb4xx_cpld->spi, &m); } -#endif EXPORT_SYMBOL_GPL(rb4xx_cpld_read); int rb4xx_cpld_write(const unsigned char *buf, unsigned count) { -#if 0 - struct spi_transfer t[3]; - struct spi_message m; - unsigned char cmd[1]; - - if (rb4xx_cpld == NULL) - return -ENODEV; - - memset(&t, 0, sizeof(t)); - spi_message_init(&m); - - /* send command */ - t[0].tx_buf = cmd; - t[0].len = sizeof(cmd); - spi_message_add_tail(&t[0], &m); - - cmd[0] = CPLD_CMD_WRITE_NAND; - - /* write data */ - t[1].tx_buf = buf; - t[1].len = count; - spi_message_add_tail(&t[1], &m); - - /* send idle */ - t[2].len = 1; - spi_message_add_tail(&t[2], &m); - - return spi_sync(rb4xx_cpld->spi, &m); -#else static const unsigned char cmd = CPLD_CMD_WRITE_NAND; struct spi_transfer t[3] = { { @@ -263,10 +165,10 @@ int rb4xx_cpld_write(const unsigned char *buf, unsigned count) }, { .tx_buf = buf, .len = count, - .fast_write = 1, + .tx_nbits = SPI_NBITS_DUAL, }, { .len = 1, - .fast_write = 1, + .tx_nbits = SPI_NBITS_DUAL, }, }; struct spi_message m; @@ -279,7 +181,6 @@ int rb4xx_cpld_write(const unsigned char *buf, unsigned count) spi_message_add_tail(&t[1], &m); spi_message_add_tail(&t[2], &m); return spi_sync(rb4xx_cpld->spi, &m); -#endif } EXPORT_SYMBOL_GPL(rb4xx_cpld_write); diff --git a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c index 357fd41708..d8c71fb5a7 100644 --- a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c +++ b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c @@ -135,7 +135,6 @@ static void do_spi_byte_fast(void __iomem *base, unsigned char byte) static int rb4xx_spi_txrx(void __iomem *base, struct spi_transfer *t) { - const unsigned char *rxv_ptr = NULL; const unsigned char *tx_ptr = t->tx_buf; unsigned char *rx_ptr = t->rx_buf; unsigned i; @@ -145,94 +144,21 @@ static int rb4xx_spi_txrx(void __iomem *base, struct spi_transfer *t) (t->tx_buf ? 1 : 0), (t->rx_buf ? 1 : 0)); - if (t->verify) { - rxv_ptr = tx_ptr; - tx_ptr = NULL; - } - for (i = 0; i < t->len; ++i) { unsigned char sdata = tx_ptr ? tx_ptr[i] : 0; - if (t->fast_write) + if (t->tx_nbits == SPI_NBITS_DUAL) do_spi_byte_fast(base, sdata); else do_spi_byte(base, sdata); - if (rx_ptr) { + if (rx_ptr) rx_ptr[i] = __raw_readl(base + AR71XX_SPI_REG_RDS) & 0xff; - } else if (rxv_ptr) { - unsigned char c = __raw_readl(base + AR71XX_SPI_REG_RDS); - if (rxv_ptr[i] != c) - return i; - } } return i; } -static int rb4xx_spi_read_fast(struct rb4xx_spi *rbspi, - struct spi_message *m) -{ - struct spi_transfer *t; - const unsigned char *tx_ptr; - unsigned addr; - void __iomem *base = rbspi->base; - - /* check for exactly two transfers */ - if (list_empty(&m->transfers) || - list_is_last(m->transfers.next, &m->transfers) || - !list_is_last(m->transfers.next->next, &m->transfers)) { - return -1; - } - - /* first transfer contains command and address */ - t = list_entry(m->transfers.next, - struct spi_transfer, transfer_list); - - if (t->len != 5 || t->tx_buf == NULL) - return -1; - - tx_ptr = t->tx_buf; - if (tx_ptr[0] != CPLD_CMD_READ_FAST) - return -1; - - addr = tx_ptr[1]; - addr = tx_ptr[2] | (addr << 8); - addr = tx_ptr[3] | (addr << 8); - addr += (unsigned) base; - - m->actual_length += t->len; - - /* second transfer contains data itself */ - t = list_entry(m->transfers.next->next, - struct spi_transfer, transfer_list); - - if (t->tx_buf && !t->verify) - return -1; - - __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS); - __raw_writel(rbspi->spi_ctrl_fread, base + AR71XX_SPI_REG_CTRL); - __raw_writel(0, base + AR71XX_SPI_REG_FS); - - if (t->rx_buf) { - memcpy(t->rx_buf, (const void *)addr, t->len); - } else if (t->tx_buf) { - unsigned char buf[t->len]; - memcpy(buf, (const void *)addr, t->len); - if (memcmp(t->tx_buf, buf, t->len) != 0) - m->status = -EMSGSIZE; - } - m->actual_length += t->len; - - if (rbspi->spi_ctrl_flash != rbspi->spi_ctrl_fread) { - __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS); - __raw_writel(rbspi->spi_ctrl_flash, base + AR71XX_SPI_REG_CTRL); - __raw_writel(0, base + AR71XX_SPI_REG_FS); - } - - return 0; -} - static int rb4xx_spi_msg(struct rb4xx_spi *rbspi, struct spi_message *m) { struct spi_transfer *t = NULL; @@ -242,10 +168,6 @@ static int rb4xx_spi_msg(struct rb4xx_spi *rbspi, struct spi_message *m) if (list_empty(&m->transfers)) return -1; - if (m->fast_read) - if (rb4xx_spi_read_fast(rbspi, m) == 0) - return -1; - __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS); __raw_writel(SPI_CTRL_FASTEST, base + AR71XX_SPI_REG_CTRL); do_spi_init(m->spi); @@ -402,6 +324,7 @@ static int rb4xx_spi_probe(struct platform_device *pdev) master->bus_num = 0; master->num_chipselect = 3; + master->mode_bits = SPI_TX_DUAL; master->setup = rb4xx_spi_setup; master->transfer = rb4xx_spi_transfer; diff --git a/target/linux/ar71xx/patches-4.4/431-spi-add-various-flags.patch b/target/linux/ar71xx/patches-4.4/431-spi-add-various-flags.patch deleted file mode 100644 index bf5aff5c7e..0000000000 --- a/target/linux/ar71xx/patches-4.4/431-spi-add-various-flags.patch +++ /dev/null @@ -1,19 +0,0 @@ ---- a/include/linux/spi/spi.h -+++ b/include/linux/spi/spi.h -@@ -695,6 +695,8 @@ struct spi_transfer { - unsigned cs_change:1; - unsigned tx_nbits:3; - unsigned rx_nbits:3; -+ unsigned verify:1; -+ unsigned fast_write:1; - #define SPI_NBITS_SINGLE 0x01 /* 1bit transfer */ - #define SPI_NBITS_DUAL 0x02 /* 2bits transfer */ - #define SPI_NBITS_QUAD 0x04 /* 4bits transfer */ -@@ -740,6 +742,7 @@ struct spi_message { - struct spi_device *spi; - - unsigned is_dma_mapped:1; -+ unsigned fast_read:1; - - /* REVISIT: we might want a flag affecting the behavior of the - * last transfer ... allowing things like "read 16 bit length L" |