diff options
| -rw-r--r-- | src/soc/nvidia/tegra210/spi.c | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/src/soc/nvidia/tegra210/spi.c b/src/soc/nvidia/tegra210/spi.c index c2656eb225..b01289c3eb 100644 --- a/src/soc/nvidia/tegra210/spi.c +++ b/src/soc/nvidia/tegra210/spi.c @@ -834,69 +834,6 @@ int spi_xfer(struct spi_slave *slave, const void *dout, return ret; } -#define JEDEC_READ 0x03 -#define JEDEC_READ_OUTSIZE 0x04 -#define JEDEC_FAST_READ_DUAL 0x3b -#define JEDEC_FAST_READ_DUAL_OUTSIZE 0x05 - -static struct spi_slave *boot_slave; - -static ssize_t tegra_spi_readat(const struct region_device *rdev, void *dest, - size_t offset, size_t count) -{ - u8 spi_read_cmd[JEDEC_FAST_READ_DUAL_OUTSIZE]; - unsigned int read_cmd_bytes; - int ret = count; - struct tegra_spi_channel *channel; - - channel = to_tegra_spi(boot_slave->bus); - - if (channel->dual_mode) { - /* - * Command 0x3b will interleave data only, command 0xbb will - * interleave the address as well. It's nice to see the address - * plainly when debugging, and we're mostly concerned with - * large transfers so the optimization of using 0xbb isn't - * really worthwhile. - */ - spi_read_cmd[0] = JEDEC_FAST_READ_DUAL; - spi_read_cmd[4] = 0x00; /* dummy byte */ - read_cmd_bytes = JEDEC_FAST_READ_DUAL_OUTSIZE; - } else { - spi_read_cmd[0] = JEDEC_READ; - read_cmd_bytes = JEDEC_READ_OUTSIZE; - } - spi_read_cmd[1] = (offset >> 16) & 0xff; - spi_read_cmd[2] = (offset >> 8) & 0xff; - spi_read_cmd[3] = offset & 0xff; - - spi_claim_bus(boot_slave); - - if (spi_xfer(boot_slave, spi_read_cmd, - read_cmd_bytes, NULL, 0) < 0) { - ret = -1; - printk(BIOS_ERR, "%s: Failed to transfer %zu bytes\n", - __func__, sizeof(spi_read_cmd)); - goto tegra_spi_cbfs_read_exit; - } - - if (channel->dual_mode) { - setbits_le32(&channel->regs->command1, SPI_CMD1_BOTH_EN_BIT); - } - if (spi_xfer(boot_slave, NULL, 0, dest, count)) { - ret = -1; - printk(BIOS_ERR, "%s: Failed to transfer %zu bytes\n", - __func__, count); - } - if (channel->dual_mode) - clrbits_le32(&channel->regs->command1, SPI_CMD1_BOTH_EN_BIT); - -tegra_spi_cbfs_read_exit: - /* de-assert /CS */ - spi_release_bus(boot_slave); - return ret; -} - struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs) { struct tegra_spi_channel *channel = to_tegra_spi(bus); @@ -905,35 +842,3 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs) return &channel->slave; } - -static const struct region_device_ops tegra_spi_ops = { - .mmap = mmap_helper_rdev_mmap, - .munmap = mmap_helper_rdev_munmap, - .readat = tegra_spi_readat, -}; - -__attribute__((unused)) -static struct mmap_helper_region_device mdev = - MMAP_HELPER_REGION_INIT(&tegra_spi_ops, 0, CONFIG_ROM_SIZE); - -#if !IS_ENABLED(CONFIG_COMMON_CBFS_SPI_WRAPPER) -const struct region_device *boot_device_ro(void) -{ - return &mdev.rdev; -} - -void boot_device_init(void) -{ - struct tegra_spi_channel *boot_chan; - - boot_chan = &tegra_spi_channels[CONFIG_BOOT_MEDIA_SPI_BUS - 1]; - boot_chan->slave.cs = CONFIG_BOOT_MEDIA_SPI_CHIP_SELECT; - -#if CONFIG_SPI_FLASH_FAST_READ_DUAL_OUTPUT_3B == 1 - boot_chan->dual_mode = 1; -#endif - boot_slave = &boot_chan->slave; - - mmap_helper_device_init(&mdev, _cbfs_cache, _cbfs_cache_size); -} -#endif |