diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/mtd/spi/spansion.c | 9 | ||||
-rw-r--r-- | drivers/mtd/spi/spi_flash.c | 14 | ||||
-rw-r--r-- | drivers/mtd/spi/winbond.c | 28 | ||||
-rw-r--r-- | drivers/spi/armada100_spi.c | 11 | ||||
-rw-r--r-- | drivers/spi/exynos_spi.c | 69 | ||||
-rw-r--r-- | drivers/spi/tegra114_spi.c | 4 | ||||
-rw-r--r-- | drivers/spi/tegra20_sflash.c | 2 |
7 files changed, 99 insertions, 38 deletions
diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c index dad30b5..b3ef90f 100644 --- a/drivers/mtd/spi/spansion.c +++ b/drivers/mtd/spi/spansion.c @@ -90,6 +90,13 @@ static const struct spansion_spi_flash_params spansion_spi_flash_table[] = { .name = "S25FL032P", }, { + .idcode1 = 0x0216, + .idcode2 = 0x4d00, + .pages_per_sector = 256, + .nr_sectors = 128, + .name = "S25FL064P", + }, + { .idcode1 = 0x2018, .idcode2 = 0x4d01, .pages_per_sector = 256, @@ -101,7 +108,7 @@ static const struct spansion_spi_flash_params spansion_spi_flash_table[] = { .idcode2 = 0x4d01, .pages_per_sector = 256, .nr_sectors = 512, - .name = "S25FL256S", + .name = "S25FL256S_64K", }, }; diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 111185a..0e38f59 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -124,9 +124,6 @@ int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, } } - debug("SF: program %s %zu bytes @ %#x\n", - ret ? "failure" : "success", len, offset); - spi_release_bus(flash->spi); return ret; } @@ -150,8 +147,10 @@ int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, u8 cmd[5]; /* Handle memory-mapped SPI */ - if (flash->memory_map) + if (flash->memory_map) { memcpy(data, flash->memory_map + offset, len); + return 0; + } cmd[0] = CMD_READ_ARRAY_FAST; spi_flash_addr(offset, cmd); @@ -205,7 +204,7 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) { - u32 start, end, erase_size; + u32 end, erase_size; int ret; u8 cmd[4]; @@ -225,8 +224,7 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) cmd[0] = CMD_ERASE_4K; else cmd[0] = CMD_ERASE_64K; - start = offset; - end = start + len; + end = offset + len; while (offset < end) { spi_flash_addr(offset, cmd); @@ -248,8 +246,6 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) goto out; } - debug("SF: Successfully erased %zu bytes @ %#x\n", len, start); - out: spi_release_bus(flash->spi); return ret; diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c index 2716209..8457808 100644 --- a/drivers/mtd/spi/winbond.c +++ b/drivers/mtd/spi/winbond.c @@ -18,6 +18,21 @@ struct winbond_spi_flash_params { static const struct winbond_spi_flash_params winbond_spi_flash_table[] = { { + .id = 0x2014, + .nr_blocks = 16, + .name = "W25P80", + }, + { + .id = 0x2015, + .nr_blocks = 32, + .name = "W25P16", + }, + { + .id = 0x2016, + .nr_blocks = 64, + .name = "W25P32", + }, + { .id = 0x3013, .nr_blocks = 8, .name = "W25X40", @@ -63,13 +78,18 @@ static const struct winbond_spi_flash_params winbond_spi_flash_table[] = { .name = "W25Q128", }, { + .id = 0x4019, + .nr_blocks = 512, + .name = "W25Q256", + }, + { .id = 0x5014, - .nr_blocks = 128, - .name = "W25Q80", + .nr_blocks = 16, + .name = "W25Q80BW", }, { .id = 0x6016, - .nr_blocks = 512, + .nr_blocks = 64, .name = "W25Q32DW", }, { @@ -104,7 +124,7 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode) } flash->page_size = 256; - flash->sector_size = 4096; + flash->sector_size = (idcode[1] == 0x20) ? 65536 : 4096; flash->size = 4096 * 16 * params->nr_blocks; return flash; diff --git a/drivers/spi/armada100_spi.c b/drivers/spi/armada100_spi.c index afdbe05..b237c7c 100644 --- a/drivers/spi/armada100_spi.c +++ b/drivers/spi/armada100_spi.c @@ -182,15 +182,8 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, goto done; } - if (dout) - pss->tx = dout; - else - pss->tx = NULL; - - if (din) - pss->rx = din; - else - pss->rx = NULL; + pss->tx = dout; + pss->rx = din; if (flags & SPI_XFER_BEGIN) { spi_cs_activate(slave); diff --git a/drivers/spi/exynos_spi.c b/drivers/spi/exynos_spi.c index 607e1cd..01378d0 100644 --- a/drivers/spi/exynos_spi.c +++ b/drivers/spi/exynos_spi.c @@ -51,6 +51,7 @@ struct exynos_spi_slave { unsigned int mode; enum periph_id periph_id; /* Peripheral ID for this device */ unsigned int fifo_size; + int skip_preamble; }; static struct spi_bus *spi_get_bus(unsigned dev_index) @@ -105,6 +106,8 @@ struct spi_slave *spi_setup_slave(unsigned int busnum, unsigned int cs, else spi_slave->fifo_size = 256; + spi_slave->skip_preamble = 0; + spi_slave->freq = bus->frequency; if (max_hz) spi_slave->freq = min(max_hz, spi_slave->freq); @@ -217,17 +220,23 @@ static void spi_request_bytes(struct exynos_spi *regs, int count) writel(count | SPI_PACKET_CNT_EN, ®s->pkt_cnt); } -static void spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, - void **dinp, void const **doutp) +static int spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, + void **dinp, void const **doutp, unsigned long flags) { struct exynos_spi *regs = spi_slave->regs; uchar *rxp = *dinp; const uchar *txp = *doutp; int rx_lvl, tx_lvl; uint out_bytes, in_bytes; + int toread; + unsigned start = get_timer(0); + int stopping; out_bytes = in_bytes = todo; + stopping = spi_slave->skip_preamble && (flags & SPI_XFER_END) && + !(spi_slave->mode & SPI_SLAVE); + /* * If there's something to send, do a software reset and set a * transaction size. @@ -238,6 +247,8 @@ static void spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, * Bytes are transmitted/received in pairs. Wait to receive all the * data because then transmission will be done as well. */ + toread = in_bytes; + while (in_bytes) { int temp; @@ -248,15 +259,43 @@ static void spi_rx_tx(struct exynos_spi_slave *spi_slave, int todo, writel(temp, ®s->tx_data); out_bytes--; } - if (rx_lvl > 0 && in_bytes) { + if (rx_lvl > 0) { temp = readl(®s->rx_data); - if (rxp) - *rxp++ = temp; - in_bytes--; + if (spi_slave->skip_preamble) { + if (temp == SPI_PREAMBLE_END_BYTE) { + spi_slave->skip_preamble = 0; + stopping = 0; + } + } else { + if (rxp || stopping) + *rxp++ = temp; + in_bytes--; + } + toread--; + } else if (!toread) { + /* + * We have run out of input data, but haven't read + * enough bytes after the preamble yet. Read some more, + * and make sure that we transmit dummy bytes too, to + * keep things going. + */ + assert(!out_bytes); + out_bytes = in_bytes; + toread = in_bytes; + txp = NULL; + spi_request_bytes(regs, toread); + } + if (spi_slave->skip_preamble && get_timer(start) > 100) { + printf("SPI timeout: in_bytes=%d, out_bytes=%d, ", + in_bytes, out_bytes); + return -1; } } + *dinp = rxp; *doutp = txp; + + return 0; } /** @@ -276,6 +315,7 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, struct exynos_spi_slave *spi_slave = to_exynos_spi(slave); int upto, todo; int bytelen; + int ret = 0; /* spi core configured to do 8 bit transfers */ if (bitlen % 8) { @@ -289,16 +329,24 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, /* Exynos SPI limits each transfer to 65535 bytes */ bytelen = bitlen / 8; - for (upto = 0; upto < bytelen; upto += todo) { + for (upto = 0; !ret && upto < bytelen; upto += todo) { todo = min(bytelen - upto, (1 << 16) - 1); - spi_rx_tx(spi_slave, todo, &din, &dout); + ret = spi_rx_tx(spi_slave, todo, &din, &dout, flags); + if (ret) + break; } /* Stop the transaction, if necessary. */ - if ((flags & SPI_XFER_END)) + if ((flags & SPI_XFER_END) && !(spi_slave->mode & SPI_SLAVE)) { spi_cs_deactivate(slave); + if (spi_slave->skip_preamble) { + assert(!spi_slave->skip_preamble); + debug("Failed to complete premable transaction\n"); + ret = -1; + } + } - return 0; + return ret; } /** @@ -325,6 +373,7 @@ void spi_cs_activate(struct spi_slave *slave) clrbits_le32(&spi_slave->regs->cs_reg, SPI_SLAVE_SIG_INACT); debug("Activate CS, bus %d\n", spi_slave->slave.bus); + spi_slave->skip_preamble = spi_slave->mode & SPI_PREAMBLE; } /** diff --git a/drivers/spi/tegra114_spi.c b/drivers/spi/tegra114_spi.c index b11a0a1..4d2af48 100644 --- a/drivers/spi/tegra114_spi.c +++ b/drivers/spi/tegra114_spi.c @@ -152,13 +152,11 @@ struct spi_slave *tegra114_spi_setup_slave(unsigned int bus, unsigned int cs, return NULL; } - spi = malloc(sizeof(struct tegra_spi_slave)); + spi = spi_alloc_slave(struct tegra_spi_slave, bus, cs); if (!spi) { printf("SPI error: malloc of SPI structure failed\n"); return NULL; } - spi->slave.bus = bus; - spi->slave.cs = cs; spi->ctrl = &spi_ctrls[bus]; if (!spi->ctrl) { printf("SPI error: could not find controller for bus %d\n", diff --git a/drivers/spi/tegra20_sflash.c b/drivers/spi/tegra20_sflash.c index 9322ce7..7c3a3fc 100644 --- a/drivers/spi/tegra20_sflash.c +++ b/drivers/spi/tegra20_sflash.c @@ -132,8 +132,6 @@ struct spi_slave *tegra20_spi_setup_slave(unsigned int bus, unsigned int cs, printf("SPI error: malloc of SPI structure failed\n"); return NULL; } - spi->slave.bus = bus; - spi->slave.cs = cs; spi->ctrl = &spi_ctrls[bus]; if (!spi->ctrl) { printf("SPI error: could not find controller for bus %d\n", |