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i2c: tegra: Add GPCDMA support

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Enable support for GPCDMA, which is used in I2C controllers
in Tegra 186 and above. The chips before that used APB DMA.
This change works under the presumption that all chips apart from
those supporting APB DMA is using GPCDMA.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Akhil R 2022-09-06 20:17:14 +05:30 committed by Wolfram Sang
parent 03d4287add
commit 48cb6356fa
1 changed files with 8 additions and 3 deletions
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11
drivers/i2c/busses/i2c-tegra.c
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@ -443,11 +443,16 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev)
u32 *dma_buf;
int err;
if (!i2c_dev->hw->has_apb_dma || i2c_dev->is_vi)
if (i2c_dev->is_vi)
return 0;
if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) {
dev_dbg(i2c_dev->dev, "DMA support not enabled\n");
if (!i2c_dev->hw->has_apb_dma) {
if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) {
dev_dbg(i2c_dev->dev, "APB DMA support not enabled\n");
return 0;
}
} else if (!IS_ENABLED(CONFIG_TEGRA186_GPC_DMA)) {
dev_dbg(i2c_dev->dev, "GPC DMA support not enabled\n");
return 0;
}