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| author | Mark Brown <broonie@kernel.org> | 2019-12-25 21:18:54 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-12-25 21:18:54 +0300 |
| commit | 790514ed7715334949125de39989720dc0985f15 (patch) | |
| tree | c2dd3cdabcf825170349f9f39b284dc59e11e065 /drivers/spi/spi-ti-qspi.c | |
| parent | 0d9c75481a8e0129f82e0b09a5e36eb1cc76c2b8 (diff) | |
| parent | 9cd34efbd3012171c102910ce17ee632a3cccb44 (diff) | |
| download | linux-790514ed7715334949125de39989720dc0985f15.tar.xz | |
Merge branch 'for-5.5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi into spi-5.6
Diffstat (limited to 'drivers/spi/spi-ti-qspi.c')
| -rw-r--r-- | drivers/spi/spi-ti-qspi.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index a18835128ad0..ad2942b3d0a9 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -62,6 +62,7 @@ struct ti_qspi { u32 dc; bool mmap_enabled; + int current_cs; }; #define QSPI_PID (0x0) @@ -485,6 +486,7 @@ static void ti_qspi_enable_memory_map(struct spi_device *spi) MEM_CS_EN(spi->chip_select)); } qspi->mmap_enabled = true; + qspi->current_cs = spi->chip_select; } static void ti_qspi_disable_memory_map(struct spi_device *spi) @@ -496,6 +498,7 @@ static void ti_qspi_disable_memory_map(struct spi_device *spi) regmap_update_bits(qspi->ctrl_base, qspi->ctrl_reg, MEM_CS_MASK, 0); qspi->mmap_enabled = false; + qspi->current_cs = -1; } static void ti_qspi_setup_mmap_read(struct spi_device *spi, u8 opcode, @@ -541,7 +544,7 @@ static int ti_qspi_exec_mem_op(struct spi_mem *mem, mutex_lock(&qspi->list_lock); - if (!qspi->mmap_enabled) + if (!qspi->mmap_enabled || qspi->current_cs != mem->spi->chip_select) ti_qspi_enable_memory_map(mem->spi); ti_qspi_setup_mmap_read(mem->spi, op->cmd.opcode, op->data.buswidth, op->addr.nbytes, op->dummy.nbytes); @@ -797,6 +800,7 @@ no_dma: } } qspi->mmap_enabled = false; + qspi->current_cs = -1; ret = devm_spi_register_master(&pdev->dev, master); if (!ret) |