This is a note to let you know that I've just added the patch titled
i2c: tegra: allow DVC support to be compiled out
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i2c-tegra-allow-dvc-support-to-be-compiled-out.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 15e8b7b3a415c876e111b298e66e3d7cb251eacc
Author: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
Date: Sat May 6 23:19:01 2023 +0200
i2c: tegra: allow DVC support to be compiled out
[ Upstream commit a55efa7edf37dc428da7058b25c58a54dc9db4e4 ]
Save a bit of code for newer Tegra platforms by compiling out
DVC's I2C mode support that's used only for Tegra2.
$ size i2c-tegra.o
text data bss dec hex filename
- 11381 292 8 11681 2da1 i2c-tegra.o
+ 10193 292 8 10493 28fd i2c-tegra.o
Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
Reviewed-by: Dmitry Osipenko <digetx@xxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxx>
Stable-dep-of: 14d069d92951 ("i2c: tegra: Do not mark ACPI devices as irq safe")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index aa469b33ee2ee..cc9dfd4f6c362 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -298,6 +298,8 @@ struct tegra_i2c_dev {
bool is_vi;
};
+#define IS_DVC(dev) (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && (dev)->is_dvc)
+
static void dvc_writel(struct tegra_i2c_dev *i2c_dev, u32 val,
unsigned int reg)
{
@@ -315,7 +317,7 @@ static u32 dvc_readl(struct tegra_i2c_dev *i2c_dev, unsigned int reg)
*/
static u32 tegra_i2c_reg_addr(struct tegra_i2c_dev *i2c_dev, unsigned int reg)
{
- if (i2c_dev->is_dvc)
+ if (IS_DVC(i2c_dev))
reg += (reg >= I2C_TX_FIFO) ? 0x10 : 0x40;
else if (i2c_dev->is_vi)
reg = 0xc00 + (reg << 2);
@@ -639,7 +641,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
WARN_ON_ONCE(err);
- if (i2c_dev->is_dvc)
+ if (IS_DVC(i2c_dev))
tegra_dvc_init(i2c_dev);
val = I2C_CNFG_NEW_MASTER_FSM | I2C_CNFG_PACKET_MODE_EN |
@@ -703,7 +705,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
return err;
}
- if (!i2c_dev->is_dvc && !i2c_dev->is_vi) {
+ if (!IS_DVC(i2c_dev) && !i2c_dev->is_vi) {
u32 sl_cfg = i2c_readl(i2c_dev, I2C_SL_CNFG);
sl_cfg |= I2C_SL_CNFG_NACK | I2C_SL_CNFG_NEWSL;
@@ -933,7 +935,7 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id)
}
i2c_writel(i2c_dev, status, I2C_INT_STATUS);
- if (i2c_dev->is_dvc)
+ if (IS_DVC(i2c_dev))
dvc_writel(i2c_dev, DVC_STATUS_I2C_DONE_INTR, DVC_STATUS);
/*
@@ -972,7 +974,7 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id)
i2c_writel(i2c_dev, status, I2C_INT_STATUS);
- if (i2c_dev->is_dvc)
+ if (IS_DVC(i2c_dev))
dvc_writel(i2c_dev, DVC_STATUS_I2C_DONE_INTR, DVC_STATUS);
if (i2c_dev->dma_mode) {
@@ -1660,7 +1662,9 @@ static const struct of_device_id tegra_i2c_of_match[] = {
{ .compatible = "nvidia,tegra114-i2c", .data = &tegra114_i2c_hw, },
{ .compatible = "nvidia,tegra30-i2c", .data = &tegra30_i2c_hw, },
{ .compatible = "nvidia,tegra20-i2c", .data = &tegra20_i2c_hw, },
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)
{ .compatible = "nvidia,tegra20-i2c-dvc", .data = &tegra20_i2c_hw, },
+#endif
{},
};
MODULE_DEVICE_TABLE(of, tegra_i2c_of_match);
@@ -1675,7 +1679,8 @@ static void tegra_i2c_parse_dt(struct tegra_i2c_dev *i2c_dev)
multi_mode = device_property_read_bool(i2c_dev->dev, "multi-master");
i2c_dev->multimaster_mode = multi_mode;
- if (of_device_is_compatible(np, "nvidia,tegra20-i2c-dvc"))
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) &&
+ of_device_is_compatible(np, "nvidia,tegra20-i2c-dvc"))
i2c_dev->is_dvc = true;
if (of_device_is_compatible(np, "nvidia,tegra210-i2c-vi"))
