[RFC PATCH v4 05/14] i2c: tegra: Avoid tegra_i2c_init_dma() for Tegra210 vi i2c
From: Sowjanya Komatineni <skomatineni@nvidia.com>
Date: 2020-07-23 23:48:31
Also in:
linux-i2c, linux-media, linux-tegra, lkml
Subsystem:
i2c subsystem, i2c subsystem host drivers, tegra i2c driver, the rest · Maintainers:
Wolfram Sang, Andi Shyti, Laxman Dewangan, Linus Torvalds
VI I2C is on host1x bus so APB DMA can't be used for Tegra210 VI I2C and there are no tx and rx dma channels for VI I2C. So, avoid attempt of requesting DMA channels. Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com> --- drivers/i2c/busses/i2c-tegra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 1bf3666..00d3e4d 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c@@ -421,7 +421,7 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev) dma_addr_t dma_phys; int err; - if (!i2c_dev->hw->has_apb_dma) + if (!i2c_dev->hw->has_apb_dma || i2c_dev->is_vi) return 0; if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) {
--
2.7.4