Tegra410 use different offsets for existing I2C registers, update
the logic to use appropriate offsets per SoC.
As the register offsets are now defined in the SoC-specific
tegra_i2c_regs structures, the tegra_i2c_reg_addr() function is no
longer needed to translate register offsets and has been removed.
Signed-off-by: Kartik Rajput <kkartik@nvidia.com>
---
Changes in v9:
* Do not remove dvc_writel() and dvc_readl() calls.
Changes in v8:
* Replace usage of dvc_writel() with writel_relaxed().
* Remove dvc_writel().
Changes in v7:
* Fix Tegra256 reg offsets, change it to tegra264_i2c_regs as it
supports SW mutex.
Changes in v6:
* Do not remove dvc_writel().
* Keep DVC registers defined as a macro.
* Correct Tegra20 DVC register offsets.
* Remove sl_cnfg, sl_addr1 and sl_addr2 registers for DVC and VI
as they are not used.
Changes in v2:
* Replace individual is_dvc and is_vi flags with an I2C variant.
* Add tegra20_dvc_i2c_hw and tegra210_vi_i2c_hw in a separate
patch.
* Use calculated offsets for tegra20_dvc_i2c_regs and
tegra210_vi_i2c_regs.
* Initialize registers only if they are used on the given SoC.
---
drivers/i2c/busses/i2c-tegra.c | 359 ++++++++++++++++++++++-----------
1 file changed, 237 insertions(+), 122 deletions(-)
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 2ef5fba66b0f..d845b8782f4f 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -30,38 +30,29 @@
#define BYTES_PER_FIFO_WORD 4
-#define I2C_CNFG 0x000
#define I2C_CNFG_DEBOUNCE_CNT GENMASK(14, 12)
#define I2C_CNFG_PACKET_MODE_EN BIT(10)
#define I2C_CNFG_NEW_MASTER_FSM BIT(11)
#define I2C_CNFG_MULTI_MASTER_MODE BIT(17)
-#define I2C_STATUS 0x01c
-#define I2C_SL_CNFG 0x020
+
#define I2C_SL_CNFG_NACK BIT(1)
#define I2C_SL_CNFG_NEWSL BIT(2)
-#define I2C_SL_ADDR1 0x02c
-#define I2C_SL_ADDR2 0x030
-#define I2C_TLOW_SEXT 0x034
-#define I2C_TX_FIFO 0x050
-#define I2C_RX_FIFO 0x054
-#define I2C_PACKET_TRANSFER_STATUS 0x058
-#define I2C_FIFO_CONTROL 0x05c
+
#define I2C_FIFO_CONTROL_TX_FLUSH BIT(1)
#define I2C_FIFO_CONTROL_RX_FLUSH BIT(0)
#define I2C_FIFO_CONTROL_TX_TRIG(x) (((x) - 1) << 5)
#define I2C_FIFO_CONTROL_RX_TRIG(x) (((x) - 1) << 2)
-#define I2C_FIFO_STATUS 0x060
+
#define I2C_FIFO_STATUS_TX GENMASK(7, 4)
#define I2C_FIFO_STATUS_RX GENMASK(3, 0)
-#define I2C_INT_MASK 0x064
-#define I2C_INT_STATUS 0x068
+
#define I2C_INT_BUS_CLR_DONE BIT(11)
#define I2C_INT_PACKET_XFER_COMPLETE BIT(7)
#define I2C_INT_NO_ACK BIT(3)
#define I2C_INT_ARBITRATION_LOST BIT(2)
#define I2C_INT_TX_FIFO_DATA_REQ BIT(1)
#define I2C_INT_RX_FIFO_DATA_REQ BIT(0)
-#define I2C_CLK_DIVISOR 0x06c
+
#define I2C_CLK_DIVISOR_STD_FAST_MODE GENMASK(31, 16)
#define I2C_CLK_DIVISOR_HSMODE GENMASK(15, 0)
@@ -94,50 +85,38 @@
#define I2C_HEADER_CONTINUE_XFER BIT(15)
#define I2C_HEADER_SLAVE_ADDR_SHIFT 1
-#define I2C_BUS_CLEAR_CNFG 0x084
#define I2C_BC_SCLK_THRESHOLD GENMASK(23, 16)
#define I2C_BC_STOP_COND BIT(2)
#define I2C_BC_TERMINATE BIT(1)
#define I2C_BC_ENABLE BIT(0)
-#define I2C_BUS_CLEAR_STATUS 0x088
+
#define I2C_BC_STATUS BIT(0)
-#define I2C_CONFIG_LOAD 0x08c
#define I2C_MSTR_CONFIG_LOAD BIT(0)
-#define I2C_CLKEN_OVERRIDE 0x090
#define I2C_MST_CORE_CLKEN_OVR BIT(0)
-#define I2C_INTERFACE_TIMING_0 0x094
-#define I2C_INTERFACE_TIMING_THIGH GENMASK(13, 8)
-#define I2C_INTERFACE_TIMING_TLOW GENMASK(5, 0)
-#define I2C_INTERFACE_TIMING_1 0x098
-#define I2C_INTERFACE_TIMING_TBUF GENMASK(29, 24)
-#define I2C_INTERFACE_TIMING_TSU_STO GENMASK(21, 16)
-#define I2C_INTERFACE_TIMING_THD_STA GENMASK(13, 8)
-#define I2C_INTERFACE_TIMING_TSU_STA GENMASK(5, 0)
-
-#define I2C_HS_INTERFACE_TIMING_0 0x09c
-#define I2C_HS_INTERFACE_TIMING_THIGH GENMASK(13, 8)
-#define I2C_HS_INTERFACE_TIMING_TLOW GENMASK(5, 0)
-#define I2C_HS_INTERFACE_TIMING_1 0x0a0
-#define I2C_HS_INTERFACE_TIMING_TSU_STO GENMASK(21, 16)
-#define I2C_HS_INTERFACE_TIMING_THD_STA GENMASK(13, 8)
-#define I2C_HS_INTERFACE_TIMING_TSU_STA GENMASK(5, 0)
-
-#define I2C_MST_FIFO_CONTROL 0x0b4
+#define I2C_INTERFACE_TIMING_THIGH GENMASK(13, 8)
+#define I2C_INTERFACE_TIMING_TLOW GENMASK(5, 0)
+#define I2C_INTERFACE_TIMING_TBUF GENMASK(29, 24)
+#define I2C_INTERFACE_TIMING_TSU_STO GENMASK(21, 16)
+#define I2C_INTERFACE_TIMING_THD_STA GENMASK(13, 8)
+#define I2C_INTERFACE_TIMING_TSU_STA GENMASK(5, 0)
+
+#define I2C_HS_INTERFACE_TIMING_THIGH GENMASK(13, 8)
+#define I2C_HS_INTERFACE_TIMING_TLOW GENMASK(5, 0)
+#define I2C_HS_INTERFACE_TIMING_TSU_STO GENMASK(21, 16)
+#define I2C_HS_INTERFACE_TIMING_THD_STA GENMASK(13, 8)
+#define I2C_HS_INTERFACE_TIMING_TSU_STA GENMASK(5, 0)
+
#define I2C_MST_FIFO_CONTROL_RX_FLUSH BIT(0)
#define I2C_MST_FIFO_CONTROL_TX_FLUSH BIT(1)
#define I2C_MST_FIFO_CONTROL_RX_TRIG(x) (((x) - 1) << 4)
#define I2C_MST_FIFO_CONTROL_TX_TRIG(x) (((x) - 1) << 16)
-#define I2C_MST_FIFO_STATUS 0x0b8
#define I2C_MST_FIFO_STATUS_TX GENMASK(23, 16)
#define I2C_MST_FIFO_STATUS_RX GENMASK(7, 0)
-#define I2C_MASTER_RESET_CNTRL 0x0a8
-
-#define I2C_SW_MUTEX 0x0ec
#define I2C_SW_MUTEX_REQUEST GENMASK(3, 0)
#define I2C_SW_MUTEX_GRANT GENMASK(7, 4)
#define I2C_SW_MUTEX_ID_CCPLEX 9
@@ -159,6 +138,143 @@
*/
#define I2C_PIO_MODE_PREFERRED_LEN 32
+struct tegra_i2c_regs {
+ unsigned int cnfg;
+ unsigned int status;
+ unsigned int sl_cnfg;
+ unsigned int sl_addr1;
+ unsigned int sl_addr2;
+ unsigned int tlow_sext;
+ unsigned int tx_fifo;
+ unsigned int rx_fifo;
+ unsigned int packet_transfer_status;
+ unsigned int fifo_control;
+ unsigned int fifo_status;
+ unsigned int int_mask;
+ unsigned int int_status;
+ unsigned int clk_divisor;
+ unsigned int bus_clear_cnfg;
+ unsigned int bus_clear_status;
+ unsigned int config_load;
+ unsigned int clken_override;
+ unsigned int interface_timing_0;
+ unsigned int interface_timing_1;
+ unsigned int hs_interface_timing_0;
+ unsigned int hs_interface_timing_1;
+ unsigned int master_reset_cntrl;
+ unsigned int mst_fifo_control;
+ unsigned int mst_fifo_status;
+ unsigned int sw_mutex;
+};
+
+static const struct tegra_i2c_regs tegra20_i2c_regs = {
+ .cnfg = 0x000,
+ .status = 0x01c,
+ .sl_cnfg = 0x020,
+ .sl_addr1 = 0x02c,
+ .sl_addr2 = 0x030,
+ .tx_fifo = 0x050,
+ .rx_fifo = 0x054,
+ .packet_transfer_status = 0x058,
+ .fifo_control = 0x05c,
+ .fifo_status = 0x060,
+ .int_mask = 0x064,
+ .int_status = 0x068,
+ .clk_divisor = 0x06c,
+ .bus_clear_cnfg = 0x084,
+ .bus_clear_status = 0x088,
+ .config_load = 0x08c,
+ .clken_override = 0x090,
+ .interface_timing_0 = 0x094,
+ .interface_timing_1 = 0x098,
+ .hs_interface_timing_0 = 0x09c,
+ .hs_interface_timing_1 = 0x0a0,
+ .master_reset_cntrl = 0x0a8,
+ .mst_fifo_control = 0x0b4,
+ .mst_fifo_status = 0x0b8,
+};
+
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)
+static const struct tegra_i2c_regs tegra20_dvc_i2c_regs = {
+ .cnfg = 0x040,
+ .status = 0x05c,
+ .tx_fifo = 0x060,
+ .rx_fifo = 0x064,
+ .packet_transfer_status = 0x068,
+ .fifo_control = 0x06c,
+ .fifo_status = 0x070,
+ .int_mask = 0x074,
+ .int_status = 0x078,
+ .clk_divisor = 0x07c,
+ .bus_clear_cnfg = 0x094,
+ .bus_clear_status = 0x098,
+ .config_load = 0x09c,
+ .clken_override = 0x0a0,
+ .interface_timing_0 = 0x0a4,
+ .interface_timing_1 = 0x0a8,
+ .hs_interface_timing_0 = 0x0ac,
+ .hs_interface_timing_1 = 0x0b0,
+ .master_reset_cntrl = 0x0b8,
+ .mst_fifo_control = 0x0c4,
+ .mst_fifo_status = 0x0c8,
+};
+#endif
+
+#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
+static const struct tegra_i2c_regs tegra210_vi_i2c_regs = {
+ .cnfg = 0x0c00,
+ .status = 0x0c70,
+ .tlow_sext = 0x0cd0,
+ .tx_fifo = 0x0d40,
+ .rx_fifo = 0x0d50,
+ .packet_transfer_status = 0x0d60,
+ .fifo_control = 0x0d70,
+ .fifo_status = 0x0d80,
+ .int_mask = 0x0d90,
+ .int_status = 0x0da0,
+ .clk_divisor = 0x0db0,
+ .bus_clear_cnfg = 0x0e10,
+ .bus_clear_status = 0x0e20,
+ .config_load = 0x0e30,
+ .clken_override = 0x0e40,
+ .interface_timing_0 = 0x0e50,
+ .interface_timing_1 = 0x0e60,
+ .hs_interface_timing_0 = 0x0e70,
+ .hs_interface_timing_1 = 0x0e80,
+ .master_reset_cntrl = 0x0ea0,
+ .mst_fifo_control = 0x0ed0,
+ .mst_fifo_status = 0x0ee0,
+};
+#endif
+
+static const struct tegra_i2c_regs tegra264_i2c_regs = {
+ .cnfg = 0x000,
+ .status = 0x01c,
+ .sl_cnfg = 0x020,
+ .sl_addr1 = 0x02c,
+ .sl_addr2 = 0x030,
+ .tx_fifo = 0x050,
+ .rx_fifo = 0x054,
+ .packet_transfer_status = 0x058,
+ .fifo_control = 0x05c,
+ .fifo_status = 0x060,
+ .int_mask = 0x064,
+ .int_status = 0x068,
+ .clk_divisor = 0x06c,
+ .bus_clear_cnfg = 0x084,
+ .bus_clear_status = 0x088,
+ .config_load = 0x08c,
+ .clken_override = 0x090,
+ .interface_timing_0 = 0x094,
+ .interface_timing_1 = 0x098,
+ .hs_interface_timing_0 = 0x09c,
+ .hs_interface_timing_1 = 0x0a0,
+ .master_reset_cntrl = 0x0a8,
+ .mst_fifo_control = 0x0b4,
+ .mst_fifo_status = 0x0b8,
+ .sw_mutex = 0x0ec,
+};
+
/*
* msg_end_type: The bus control which needs to be sent at end of transfer.
* @MSG_END_STOP: Send stop pulse.
@@ -236,6 +352,7 @@ enum tegra_i2c_variant {
* @enable_hs_mode_support: Enable support for high speed (HS) mode transfers.
* @has_mutex: Has mutex register for mutual exclusion with other firmwares or VMs.
* @variant: This represents the I2C controller variant.
+ * @regs: Register offsets for the specific SoC variant.
*/
struct tegra_i2c_hw_feature {
bool has_continue_xfer_support;
@@ -268,6 +385,7 @@ struct tegra_i2c_hw_feature {
bool enable_hs_mode_support;
bool has_mutex;
enum tegra_i2c_variant variant;
+ const struct tegra_i2c_regs *regs;
};
/**
@@ -351,40 +469,26 @@ static u32 dvc_readl(struct tegra_i2c_dev *i2c_dev, unsigned int reg)
return readl_relaxed(i2c_dev->base + reg);
}
-/*
- * If necessary, i2c_writel() and i2c_readl() will offset the register
- * in order to talk to the I2C block inside the DVC block.
- */
-static u32 tegra_i2c_reg_addr(struct tegra_i2c_dev *i2c_dev, unsigned int reg)
-{
- if (IS_DVC(i2c_dev))
- reg += (reg >= I2C_TX_FIFO) ? 0x10 : 0x40;
- else if (IS_VI(i2c_dev))
- reg = 0xc00 + (reg << 2);
-
- return reg;
-}
-
static void i2c_writel(struct tegra_i2c_dev *i2c_dev, u32 val, unsigned int reg)
{
- writel_relaxed(val, i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg));
+ writel_relaxed(val, i2c_dev->base + reg);
/* read back register to make sure that register writes completed */
- if (reg != I2C_TX_FIFO)
- readl_relaxed(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg));
+ if (reg != i2c_dev->hw->regs->tx_fifo)
+ readl_relaxed(i2c_dev->base + reg);
else if (IS_VI(i2c_dev))
- readl_relaxed(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, I2C_INT_STATUS));
+ readl_relaxed(i2c_dev->base + i2c_dev->hw->regs->int_status);
}
static u32 i2c_readl(struct tegra_i2c_dev *i2c_dev, unsigned int reg)
{
- return readl_relaxed(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg));
+ return readl_relaxed(i2c_dev->base + reg);
}
static void i2c_writesl(struct tegra_i2c_dev *i2c_dev, void *data,
unsigned int reg, unsigned int len)
{
- writesl(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg), data, len);
+ writesl(i2c_dev->base + reg, data, len);
}
static void i2c_writesl_vi(struct tegra_i2c_dev *i2c_dev, void *data,
@@ -405,12 +509,12 @@ static void i2c_writesl_vi(struct tegra_i2c_dev *i2c_dev, void *data,
static void i2c_readsl(struct tegra_i2c_dev *i2c_dev, void *data,
unsigned int reg, unsigned int len)
{
- readsl(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg), data, len);
+ readsl(i2c_dev->base + reg, data, len);
}
static bool tegra_i2c_mutex_acquired(struct tegra_i2c_dev *i2c_dev)
{
- unsigned int reg = tegra_i2c_reg_addr(i2c_dev, I2C_SW_MUTEX);
+ unsigned int reg = i2c_dev->hw->regs->sw_mutex;
u32 val, id;
val = readl(i2c_dev->base + reg);
@@ -421,7 +525,7 @@ static bool tegra_i2c_mutex_acquired(struct tegra_i2c_dev *i2c_dev)
static bool tegra_i2c_mutex_trylock(struct tegra_i2c_dev *i2c_dev)
{
- unsigned int reg = tegra_i2c_reg_addr(i2c_dev, I2C_SW_MUTEX);
+ unsigned int reg = i2c_dev->hw->regs->sw_mutex;
u32 val, id;
val = readl(i2c_dev->base + reg);
@@ -459,7 +563,7 @@ static int tegra_i2c_mutex_lock(struct tegra_i2c_dev *i2c_dev)
static int tegra_i2c_mutex_unlock(struct tegra_i2c_dev *i2c_dev)
{
- unsigned int reg = tegra_i2c_reg_addr(i2c_dev, I2C_SW_MUTEX);
+ unsigned int reg = i2c_dev->hw->regs->sw_mutex;
u32 val, id;
if (!i2c_dev->hw->has_mutex)
@@ -482,16 +586,16 @@ static void tegra_i2c_mask_irq(struct tegra_i2c_dev *i2c_dev, u32 mask)
{
u32 int_mask;
- int_mask = i2c_readl(i2c_dev, I2C_INT_MASK) & ~mask;
- i2c_writel(i2c_dev, int_mask, I2C_INT_MASK);
+ int_mask = i2c_readl(i2c_dev, i2c_dev->hw->regs->int_mask) & ~mask;
+ i2c_writel(i2c_dev, int_mask, i2c_dev->hw->regs->int_mask);
}
static void tegra_i2c_unmask_irq(struct tegra_i2c_dev *i2c_dev, u32 mask)
{
u32 int_mask;
- int_mask = i2c_readl(i2c_dev, I2C_INT_MASK) | mask;
- i2c_writel(i2c_dev, int_mask, I2C_INT_MASK);
+ int_mask = i2c_readl(i2c_dev, i2c_dev->hw->regs->int_mask) | mask;
+ i2c_writel(i2c_dev, int_mask, i2c_dev->hw->regs->int_mask);
}
static void tegra_i2c_dma_complete(void *args)
@@ -635,34 +739,34 @@ static void tegra_i2c_vi_init(struct tegra_i2c_dev *i2c_dev)
value = FIELD_PREP(I2C_INTERFACE_TIMING_THIGH, 2) |
FIELD_PREP(I2C_INTERFACE_TIMING_TLOW, 4);
- i2c_writel(i2c_dev, value, I2C_INTERFACE_TIMING_0);
+ i2c_writel(i2c_dev, value, i2c_dev->hw->regs->interface_timing_0);
value = FIELD_PREP(I2C_INTERFACE_TIMING_TBUF, 4) |
FIELD_PREP(I2C_INTERFACE_TIMING_TSU_STO, 7) |
FIELD_PREP(I2C_INTERFACE_TIMING_THD_STA, 4) |
FIELD_PREP(I2C_INTERFACE_TIMING_TSU_STA, 4);
- i2c_writel(i2c_dev, value, I2C_INTERFACE_TIMING_1);
+ i2c_writel(i2c_dev, value, i2c_dev->hw->regs->interface_timing_1);
value = FIELD_PREP(I2C_HS_INTERFACE_TIMING_THIGH, 3) |
FIELD_PREP(I2C_HS_INTERFACE_TIMING_TLOW, 8);
- i2c_writel(i2c_dev, value, I2C_HS_INTERFACE_TIMING_0);
+ i2c_writel(i2c_dev, value, i2c_dev->hw->regs->hs_interface_timing_0);
value = FIELD_PREP(I2C_HS_INTERFACE_TIMING_TSU_STO, 11) |
FIELD_PREP(I2C_HS_INTERFACE_TIMING_THD_STA, 11) |
FIELD_PREP(I2C_HS_INTERFACE_TIMING_TSU_STA, 11);
- i2c_writel(i2c_dev, value, I2C_HS_INTERFACE_TIMING_1);
+ i2c_writel(i2c_dev, value, i2c_dev->hw->regs->hs_interface_timing_1);
value = FIELD_PREP(I2C_BC_SCLK_THRESHOLD, 9) | I2C_BC_STOP_COND;
- i2c_writel(i2c_dev, value, I2C_BUS_CLEAR_CNFG);
+ i2c_writel(i2c_dev, value, i2c_dev->hw->regs->bus_clear_cnfg);
- i2c_writel(i2c_dev, 0x0, I2C_TLOW_SEXT);
+ i2c_writel(i2c_dev, 0x0, i2c_dev->hw->regs->tlow_sext);
}
static int tegra_i2c_poll_register(struct tegra_i2c_dev *i2c_dev,
u32 reg, u32 mask, u32 delay_us,
u32 timeout_us)
{
- void __iomem *addr = i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg);
+ void __iomem *addr = i2c_dev->base + reg;
u32 val;
if (!i2c_dev->atomic_mode)
@@ -681,11 +785,11 @@ static int tegra_i2c_flush_fifos(struct tegra_i2c_dev *i2c_dev)
if (i2c_dev->hw->has_mst_fifo) {
mask = I2C_MST_FIFO_CONTROL_TX_FLUSH |
I2C_MST_FIFO_CONTROL_RX_FLUSH;
- offset = I2C_MST_FIFO_CONTROL;
+ offset = i2c_dev->hw->regs->mst_fifo_control;
} else {
mask = I2C_FIFO_CONTROL_TX_FLUSH |
I2C_FIFO_CONTROL_RX_FLUSH;
- offset = I2C_FIFO_CONTROL;
+ offset = i2c_dev->hw->regs->fifo_control;
}
val = i2c_readl(i2c_dev, offset);
@@ -708,9 +812,9 @@ static int tegra_i2c_wait_for_config_load(struct tegra_i2c_dev *i2c_dev)
if (!i2c_dev->hw->has_config_load_reg)
return 0;
- i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);
+ i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, i2c_dev->hw->regs->config_load);
- err = tegra_i2c_poll_register(i2c_dev, I2C_CONFIG_LOAD, 0xffffffff,
+ err = tegra_i2c_poll_register(i2c_dev, i2c_dev->hw->regs->config_load, 0xffffffff,
1000, I2C_CONFIG_LOAD_TIMEOUT);
if (err) {
dev_err(i2c_dev->dev, "failed to load config\n");
@@ -731,10 +835,10 @@ static int tegra_i2c_master_reset(struct tegra_i2c_dev *i2c_dev)
* SW needs to wait for 2us after assertion and de-assertion of this soft
* reset.
*/
- i2c_writel(i2c_dev, 0x1, I2C_MASTER_RESET_CNTRL);
+ i2c_writel(i2c_dev, 0x1, i2c_dev->hw->regs->master_reset_cntrl);
fsleep(2);
- i2c_writel(i2c_dev, 0x0, I2C_MASTER_RESET_CNTRL);
+ i2c_writel(i2c_dev, 0x0, i2c_dev->hw->regs->master_reset_cntrl);
fsleep(2);
return 0;
@@ -776,8 +880,8 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
if (i2c_dev->hw->has_multi_master_mode)
val |= I2C_CNFG_MULTI_MASTER_MODE;
- i2c_writel(i2c_dev, val, I2C_CNFG);
- i2c_writel(i2c_dev, 0, I2C_INT_MASK);
+ i2c_writel(i2c_dev, val, i2c_dev->hw->regs->cnfg);
+ i2c_writel(i2c_dev, 0, i2c_dev->hw->regs->int_mask);
if (IS_VI(i2c_dev))
tegra_i2c_vi_init(i2c_dev);
@@ -822,12 +926,12 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
clk_divisor = FIELD_PREP(I2C_CLK_DIVISOR_HSMODE,
i2c_dev->hw->clk_divisor_hs_mode) |
FIELD_PREP(I2C_CLK_DIVISOR_STD_FAST_MODE, non_hs_mode);
- i2c_writel(i2c_dev, clk_divisor, I2C_CLK_DIVISOR);
+ i2c_writel(i2c_dev, clk_divisor, i2c_dev->hw->regs->clk_divisor);
if (i2c_dev->hw->has_interface_timing_reg) {
val = FIELD_PREP(I2C_INTERFACE_TIMING_THIGH, thigh) |
FIELD_PREP(I2C_INTERFACE_TIMING_TLOW, tlow);
- i2c_writel(i2c_dev, val, I2C_INTERFACE_TIMING_0);
+ i2c_writel(i2c_dev, val, i2c_dev->hw->regs->interface_timing_0);
}
/*
@@ -835,7 +939,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
* Otherwise, preserve the chip default values.
*/
if (i2c_dev->hw->has_interface_timing_reg && tsu_thd)
- i2c_writel(i2c_dev, tsu_thd, I2C_INTERFACE_TIMING_1);
+ i2c_writel(i2c_dev, tsu_thd, i2c_dev->hw->regs->interface_timing_1);
/* Write HS mode registers. These will get used only for HS mode*/
if (i2c_dev->hw->enable_hs_mode_support) {
@@ -845,8 +949,8 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
val = FIELD_PREP(I2C_HS_INTERFACE_TIMING_THIGH, thigh) |
FIELD_PREP(I2C_HS_INTERFACE_TIMING_TLOW, tlow);
- i2c_writel(i2c_dev, val, I2C_HS_INTERFACE_TIMING_0);
- i2c_writel(i2c_dev, tsu_thd, I2C_HS_INTERFACE_TIMING_1);
+ i2c_writel(i2c_dev, val, i2c_dev->hw->regs->hs_interface_timing_0);
+ i2c_writel(i2c_dev, tsu_thd, i2c_dev->hw->regs->hs_interface_timing_1);
}
clk_multiplier = (tlow + thigh + 2) * (non_hs_mode + 1);
@@ -859,12 +963,12 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
}
if (!IS_DVC(i2c_dev) && !IS_VI(i2c_dev)) {
- u32 sl_cfg = i2c_readl(i2c_dev, I2C_SL_CNFG);
+ u32 sl_cfg = i2c_readl(i2c_dev, i2c_dev->hw->regs->sl_cnfg);
sl_cfg |= I2C_SL_CNFG_NACK | I2C_SL_CNFG_NEWSL;
- i2c_writel(i2c_dev, sl_cfg, I2C_SL_CNFG);
- i2c_writel(i2c_dev, 0xfc, I2C_SL_ADDR1);
- i2c_writel(i2c_dev, 0x00, I2C_SL_ADDR2);
+ i2c_writel(i2c_dev, sl_cfg, i2c_dev->hw->regs->sl_cnfg);
+ i2c_writel(i2c_dev, 0xfc, i2c_dev->hw->regs->sl_addr1);
+ i2c_writel(i2c_dev, 0x00, i2c_dev->hw->regs->sl_addr2);
}
err = tegra_i2c_flush_fifos(i2c_dev);
@@ -872,7 +976,7 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
return err;
if (i2c_dev->multimaster_mode && i2c_dev->hw->has_slcg_override_reg)
- i2c_writel(i2c_dev, I2C_MST_CORE_CLKEN_OVR, I2C_CLKEN_OVERRIDE);
+ i2c_writel(i2c_dev, I2C_MST_CORE_CLKEN_OVR, i2c_dev->hw->regs->clken_override);
err = tegra_i2c_wait_for_config_load(i2c_dev);
if (err)
@@ -893,9 +997,9 @@ static int tegra_i2c_disable_packet_mode(struct tegra_i2c_dev *i2c_dev)
*/
udelay(DIV_ROUND_UP(2 * 1000000, i2c_dev->timings.bus_freq_hz));
- cnfg = i2c_readl(i2c_dev, I2C_CNFG);
+ cnfg = i2c_readl(i2c_dev, i2c_dev->hw->regs->cnfg);
if (cnfg & I2C_CNFG_PACKET_MODE_EN)
- i2c_writel(i2c_dev, cnfg & ~I2C_CNFG_PACKET_MODE_EN, I2C_CNFG);
+ i2c_writel(i2c_dev, cnfg & ~I2C_CNFG_PACKET_MODE_EN, i2c_dev->hw->regs->cnfg);
return tegra_i2c_wait_for_config_load(i2c_dev);
}
@@ -915,10 +1019,10 @@ static int tegra_i2c_empty_rx_fifo(struct tegra_i2c_dev *i2c_dev)
return -EINVAL;
if (i2c_dev->hw->has_mst_fifo) {
- val = i2c_readl(i2c_dev, I2C_MST_FIFO_STATUS);
+ val = i2c_readl(i2c_dev, i2c_dev->hw->regs->mst_fifo_status);
rx_fifo_avail = FIELD_GET(I2C_MST_FIFO_STATUS_RX, val);
} else {
- val = i2c_readl(i2c_dev, I2C_FIFO_STATUS);
+ val = i2c_readl(i2c_dev, i2c_dev->hw->regs->fifo_status);
rx_fifo_avail = FIELD_GET(I2C_FIFO_STATUS_RX, val);
}
@@ -927,7 +1031,7 @@ static int tegra_i2c_empty_rx_fifo(struct tegra_i2c_dev *i2c_dev)
if (words_to_transfer > rx_fifo_avail)
words_to_transfer = rx_fifo_avail;
- i2c_readsl(i2c_dev, buf, I2C_RX_FIFO, words_to_transfer);
+ i2c_readsl(i2c_dev, buf, i2c_dev->hw->regs->rx_fifo, words_to_transfer);
buf += words_to_transfer * BYTES_PER_FIFO_WORD;
buf_remaining -= words_to_transfer * BYTES_PER_FIFO_WORD;
@@ -943,7 +1047,7 @@ static int tegra_i2c_empty_rx_fifo(struct tegra_i2c_dev *i2c_dev)
* when (words_to_transfer was > rx_fifo_avail) earlier
* in this function.
*/
- val = i2c_readl(i2c_dev, I2C_RX_FIFO);
+ val = i2c_readl(i2c_dev, i2c_dev->hw->regs->rx_fifo);
val = cpu_to_le32(val);
memcpy(buf, &val, buf_remaining);
buf_remaining = 0;
@@ -968,10 +1072,10 @@ static int tegra_i2c_fill_tx_fifo(struct tegra_i2c_dev *i2c_dev)
u32 val;
if (i2c_dev->hw->has_mst_fifo) {
- val = i2c_readl(i2c_dev, I2C_MST_FIFO_STATUS);
+ val = i2c_readl(i2c_dev, i2c_dev->hw->regs->mst_fifo_status);
tx_fifo_avail = FIELD_GET(I2C_MST_FIFO_STATUS_TX, val);
} else {
- val = i2c_readl(i2c_dev, I2C_FIFO_STATUS);
+ val = i2c_readl(i2c_dev, i2c_dev->hw->regs->fifo_status);
tx_fifo_avail = FIELD_GET(I2C_FIFO_STATUS_TX, val);
}
@@ -1002,9 +1106,9 @@ static int tegra_i2c_fill_tx_fifo(struct tegra_i2c_dev *i2c_dev)
i2c_dev->msg_buf = buf + words_to_transfer * BYTES_PER_FIFO_WORD;
if (IS_VI(i2c_dev))
- i2c_writesl_vi(i2c_dev, buf, I2C_TX_FIFO, words_to_transfer);
+ i2c_writesl_vi(i2c_dev, buf, i2c_dev->hw->regs->tx_fifo, words_to_transfer);
else
- i2c_writesl(i2c_dev, buf, I2C_TX_FIFO, words_to_transfer);
+ i2c_writesl(i2c_dev, buf, i2c_dev->hw->regs->tx_fifo, words_to_transfer);
buf += words_to_transfer * BYTES_PER_FIFO_WORD;
}
@@ -1026,7 +1130,7 @@ static int tegra_i2c_fill_tx_fifo(struct tegra_i2c_dev *i2c_dev)
i2c_dev->msg_buf_remaining = 0;
i2c_dev->msg_buf = NULL;
- i2c_writel(i2c_dev, val, I2C_TX_FIFO);
+ i2c_writel(i2c_dev, val, i2c_dev->hw->regs->tx_fifo);
}
return 0;
@@ -1038,13 +1142,13 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id)
struct tegra_i2c_dev *i2c_dev = dev_id;
u32 status;
- status = i2c_readl(i2c_dev, I2C_INT_STATUS);
+ status = i2c_readl(i2c_dev, i2c_dev->hw->regs->int_status);
if (status == 0) {
dev_warn(i2c_dev->dev, "IRQ status 0 %08x %08x %08x\n",
- i2c_readl(i2c_dev, I2C_PACKET_TRANSFER_STATUS),
- i2c_readl(i2c_dev, I2C_STATUS),
- i2c_readl(i2c_dev, I2C_CNFG));
+ i2c_readl(i2c_dev, i2c_dev->hw->regs->packet_transfer_status),
+ i2c_readl(i2c_dev, i2c_dev->hw->regs->status),
+ i2c_readl(i2c_dev, i2c_dev->hw->regs->cnfg));
i2c_dev->msg_err |= I2C_ERR_UNKNOWN_INTERRUPT;
goto err;
}
@@ -1087,7 +1191,7 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id)
}
}
- i2c_writel(i2c_dev, status, I2C_INT_STATUS);
+ i2c_writel(i2c_dev, status, i2c_dev->hw->regs->int_status);
if (IS_DVC(i2c_dev))
dvc_writel(i2c_dev, DVC_STATUS_I2C_DONE_INTR, DVC_STATUS);
@@ -1125,7 +1229,7 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id)
if (i2c_dev->hw->supports_bus_clear)
tegra_i2c_mask_irq(i2c_dev, I2C_INT_BUS_CLR_DONE);
- i2c_writel(i2c_dev, status, I2C_INT_STATUS);
+ i2c_writel(i2c_dev, status, i2c_dev->hw->regs->int_status);
if (IS_DVC(i2c_dev))
dvc_writel(i2c_dev, DVC_STATUS_I2C_DONE_INTR, DVC_STATUS);
@@ -1148,9 +1252,9 @@ static void tegra_i2c_config_fifo_trig(struct tegra_i2c_dev *i2c_dev,
int err;
if (i2c_dev->hw->has_mst_fifo)
- reg = I2C_MST_FIFO_CONTROL;
+ reg = i2c_dev->hw->regs->mst_fifo_control;
else
- reg = I2C_FIFO_CONTROL;
+ reg = i2c_dev->hw->regs->fifo_control;
if (i2c_dev->dma_mode) {
if (len & 0xF)
@@ -1161,7 +1265,7 @@ static void tegra_i2c_config_fifo_trig(struct tegra_i2c_dev *i2c_dev,
dma_burst = 8;
if (i2c_dev->msg_read) {
- reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_RX_FIFO);
+ reg_offset = i2c_dev->hw->regs->rx_fifo;
slv_config.src_addr = i2c_dev->base_phys + reg_offset;
slv_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
@@ -1172,7 +1276,7 @@ static void tegra_i2c_config_fifo_trig(struct tegra_i2c_dev *i2c_dev,
else
val = I2C_FIFO_CONTROL_RX_TRIG(dma_burst);
} else {
- reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_TX_FIFO);
+ reg_offset = i2c_dev->hw->regs->tx_fifo;
slv_config.dst_addr = i2c_dev->base_phys + reg_offset;
slv_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
@@ -1215,7 +1319,7 @@ static unsigned long tegra_i2c_poll_completion(struct tegra_i2c_dev *i2c_dev,
ktime_t ktimeout = ktime_add_ms(ktime, timeout_ms);
do {
- u32 status = i2c_readl(i2c_dev, I2C_INT_STATUS);
+ u32 status = i2c_readl(i2c_dev, i2c_dev->hw->regs->int_status);
if (status)
tegra_i2c_isr(i2c_dev->irq, i2c_dev);
@@ -1274,14 +1378,14 @@ static int tegra_i2c_issue_bus_clear(struct i2c_adapter *adap)
val = FIELD_PREP(I2C_BC_SCLK_THRESHOLD, 9) | I2C_BC_STOP_COND |
I2C_BC_TERMINATE;
- i2c_writel(i2c_dev, val, I2C_BUS_CLEAR_CNFG);
+ i2c_writel(i2c_dev, val, i2c_dev->hw->regs->bus_clear_cnfg);
err = tegra_i2c_wait_for_config_load(i2c_dev);
if (err)
return err;
val |= I2C_BC_ENABLE;
- i2c_writel(i2c_dev, val, I2C_BUS_CLEAR_CNFG);
+ i2c_writel(i2c_dev, val, i2c_dev->hw->regs->bus_clear_cnfg);
tegra_i2c_unmask_irq(i2c_dev, I2C_INT_BUS_CLR_DONE);
time_left = tegra_i2c_wait_completion(i2c_dev, &i2c_dev->msg_complete, 50);
@@ -1292,7 +1396,7 @@ static int tegra_i2c_issue_bus_clear(struct i2c_adapter *adap)
return -ETIMEDOUT;
}
- val = i2c_readl(i2c_dev, I2C_BUS_CLEAR_STATUS);
+ val = i2c_readl(i2c_dev, i2c_dev->hw->regs->bus_clear_status);
if (!(val & I2C_BC_STATUS)) {
dev_err(i2c_dev->dev, "un-recovered arbitration lost\n");
return -EIO;
@@ -1317,14 +1421,14 @@ static void tegra_i2c_push_packet_header(struct tegra_i2c_dev *i2c_dev,
if (i2c_dev->dma_mode && !i2c_dev->msg_read)
*dma_buf++ = packet_header;
else
- i2c_writel(i2c_dev, packet_header, I2C_TX_FIFO);
+ i2c_writel(i2c_dev, packet_header, i2c_dev->hw->regs->tx_fifo);
packet_header = i2c_dev->msg_len - 1;
if (i2c_dev->dma_mode && !i2c_dev->msg_read)
*dma_buf++ = packet_header;
else
- i2c_writel(i2c_dev, packet_header, I2C_TX_FIFO);
+ i2c_writel(i2c_dev, packet_header, i2c_dev->hw->regs->tx_fifo);
packet_header = I2C_HEADER_IE_ENABLE;
@@ -1352,7 +1456,7 @@ static void tegra_i2c_push_packet_header(struct tegra_i2c_dev *i2c_dev,
if (i2c_dev->dma_mode && !i2c_dev->msg_read)
*dma_buf++ = packet_header;
else
- i2c_writel(i2c_dev, packet_header, I2C_TX_FIFO);
+ i2c_writel(i2c_dev, packet_header, i2c_dev->hw->regs->tx_fifo);
}
static int tegra_i2c_error_recover(struct tegra_i2c_dev *i2c_dev,
@@ -1473,7 +1577,7 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
tegra_i2c_unmask_irq(i2c_dev, int_mask);
dev_dbg(i2c_dev->dev, "unmasked IRQ: %02x\n",
- i2c_readl(i2c_dev, I2C_INT_MASK));
+ i2c_readl(i2c_dev, i2c_dev->hw->regs->int_mask));
if (i2c_dev->dma_mode) {
time_left = tegra_i2c_wait_completion(i2c_dev,
@@ -1648,6 +1752,7 @@ static const struct tegra_i2c_hw_feature tegra20_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra20_i2c_regs,
};
#if IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC)
@@ -1680,6 +1785,7 @@ static const struct tegra_i2c_hw_feature tegra20_dvc_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DVC,
+ .regs = &tegra20_dvc_i2c_regs,
};
#endif
@@ -1712,6 +1818,7 @@ static const struct tegra_i2c_hw_feature tegra30_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra20_i2c_regs,
};
static const struct tegra_i2c_hw_feature tegra114_i2c_hw = {
@@ -1743,6 +1850,7 @@ static const struct tegra_i2c_hw_feature tegra114_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra20_i2c_regs,
};
static const struct tegra_i2c_hw_feature tegra124_i2c_hw = {
@@ -1774,6 +1882,7 @@ static const struct tegra_i2c_hw_feature tegra124_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra20_i2c_regs,
};
static const struct tegra_i2c_hw_feature tegra210_i2c_hw = {
@@ -1805,6 +1914,7 @@ static const struct tegra_i2c_hw_feature tegra210_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra20_i2c_regs,
};
#if IS_ENABLED(CONFIG_ARCH_TEGRA_210_SOC)
@@ -1837,6 +1947,7 @@ static const struct tegra_i2c_hw_feature tegra210_vi_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_VI,
+ .regs = &tegra210_vi_i2c_regs,
};
#endif
@@ -1869,6 +1980,7 @@ static const struct tegra_i2c_hw_feature tegra186_i2c_hw = {
.enable_hs_mode_support = false,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra20_i2c_regs,
};
static const struct tegra_i2c_hw_feature tegra194_i2c_hw = {
@@ -1902,6 +2014,7 @@ static const struct tegra_i2c_hw_feature tegra194_i2c_hw = {
.enable_hs_mode_support = true,
.has_mutex = false,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra20_i2c_regs,
};
static const struct tegra_i2c_hw_feature tegra256_i2c_hw = {
@@ -1935,6 +2048,7 @@ static const struct tegra_i2c_hw_feature tegra256_i2c_hw = {
.enable_hs_mode_support = true,
.has_mutex = true,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra264_i2c_regs,
};
static const struct tegra_i2c_hw_feature tegra264_i2c_hw = {
@@ -1968,6 +2082,7 @@ static const struct tegra_i2c_hw_feature tegra264_i2c_hw = {
.enable_hs_mode_support = true,
.has_mutex = true,
.variant = TEGRA_I2C_VARIANT_DEFAULT,
+ .regs = &tegra264_i2c_regs,
};
static const struct of_device_id tegra_i2c_of_match[] = {
--
2.43.0© 2016 - 2026 Red Hat, Inc.