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
- 10385 240 8 10633 2989 i2c-tegra.o
+ 9617 240 8 9865 2689 i2c-tegra.o
Signed-off-by: Michał Mirosław <mirq-linux@xxxxxxxxxxxx>
---
drivers/i2c/busses/Kconfig | 8 ++++++++
drivers/i2c/busses/i2c-tegra.c | 17 +++++++++++------
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index dce392839017..b557b832bfec 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -1079,6 +1079,14 @@ config I2C_TEGRA
If you say yes to this option, support will be included for the
I2C controller embedded in NVIDIA Tegra SOCs
+config I2C_TEGRA_DVC
+ bool "NVIDIA Tegra DVC I2C controller"
+ depends on I2C_TEGRA
+ default y if ARCH_TEGRA_2x_SOC
+ help
+ If you say yes to this option, tegra-i2c will also support
+ I2C controller that is part of DVC in Tegra20 SoCs.
+
config I2C_TEGRA_BPMP
tristate "NVIDIA Tegra BPMP I2C controller"
depends on TEGRA_BPMP || COMPILE_TEST
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index b3184c422826..60ecf6c9f649 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -294,6 +294,8 @@ struct tegra_i2c_dev {
bool is_vi;
};
+#define IS_DVC(dev) (IS_ENABLED(CONFIG_I2C_TEGRA_DVC) && dev->is_dvc)
+
static void dvc_writel(struct tegra_i2c_dev *i2c_dev, u32 val,
unsigned int reg)
{
@@ -311,7 +313,7 @@ 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);
@@ -621,7 +623,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
err = reset_control_reset(i2c_dev->rst);
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 |
@@ -685,7 +687,7 @@ 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;
@@ -915,7 +917,7 @@ 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);
/*
@@ -954,7 +956,7 @@ 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) {
@@ -1616,7 +1618,9 @@ 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_I2C_TEGRA_DVC)
{ .compatible = "nvidia,tegra20-i2c-dvc", .data = &tegra20_i2c_hw, },
+#endif
{},
};
MODULE_DEVICE_TABLE(of, tegra_i2c_of_match);
@@ -1635,7 +1639,8 @@ static void tegra_i2c_parse_dt(struct tegra_i2c_dev *i2c_dev)
multi_mode = of_property_read_bool(np, "multi-master");
i2c_dev->multimaster_mode = multi_mode;
- if (of_device_is_compatible(np, "nvidia,tegra20-i2c-dvc"))
+ if (IS_ENABLED(CONFIG_I2C_TEGRA_DVC) &&
+ of_device_is_compatible(np, "nvidia,tegra20-i2c-dvc"))
i2c_dev->is_dvc = true;
if (of_device_is_compatible(np, "nvidia,tegra210-i2c-vi"))
--
2.30.2
