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-rw-r--r--drivers/i2c/busses/Kconfig3
-rw-r--r--drivers/i2c/busses/i2c-amd-mp2-pci.c5
-rw-r--r--drivers/i2c/busses/i2c-bcm2835.c12
-rw-r--r--drivers/i2c/busses/i2c-designware-core.h2
-rw-r--r--drivers/i2c/busses/i2c-designware-master.c7
-rw-r--r--drivers/i2c/busses/i2c-designware-platdrv.c13
-rw-r--r--drivers/i2c/busses/i2c-i801.c3
-rw-r--r--drivers/i2c/busses/i2c-k1.c19
-rw-r--r--drivers/i2c/busses/i2c-qcom-cci.c46
-rw-r--r--drivers/i2c/busses/i2c-stm32.c7
10 files changed, 87 insertions, 30 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index fd81e49638aa..cea87fcb4a1a 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -166,6 +166,7 @@ config I2C_I801
Arrow Lake (SOC)
Panther Lake (SOC)
Wildcat Lake (SOC)
+ Diamond Rapids (SOC)
This driver can also be built as a module. If so, the module
will be called i2c-i801.
@@ -1474,7 +1475,7 @@ config I2C_ACORN
config I2C_ELEKTOR
tristate "Elektor ISA card"
- depends on ISA && HAS_IOPORT_MAP && BROKEN_ON_SMP
+ depends on ISA && HAS_IOPORT_MAP
select I2C_ALGOPCF
help
This supports the PCF8584 ISA bus I2C adapter. Say Y if you own
diff --git a/drivers/i2c/busses/i2c-amd-mp2-pci.c b/drivers/i2c/busses/i2c-amd-mp2-pci.c
index ef7370d3dbea..60edbabc2986 100644
--- a/drivers/i2c/busses/i2c-amd-mp2-pci.c
+++ b/drivers/i2c/busses/i2c-amd-mp2-pci.c
@@ -458,13 +458,16 @@ struct amd_mp2_dev *amd_mp2_find_device(void)
{
struct device *dev;
struct pci_dev *pci_dev;
+ struct amd_mp2_dev *mp2_dev;
dev = driver_find_next_device(&amd_mp2_pci_driver.driver, NULL);
if (!dev)
return NULL;
pci_dev = to_pci_dev(dev);
- return (struct amd_mp2_dev *)pci_get_drvdata(pci_dev);
+ mp2_dev = (struct amd_mp2_dev *)pci_get_drvdata(pci_dev);
+ put_device(dev);
+ return mp2_dev;
}
EXPORT_SYMBOL_GPL(amd_mp2_find_device);
diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c
index 8554e790f8e3..0d7e2654a534 100644
--- a/drivers/i2c/busses/i2c-bcm2835.c
+++ b/drivers/i2c/busses/i2c-bcm2835.c
@@ -137,12 +137,14 @@ static int clk_bcm2835_i2c_set_rate(struct clk_hw *hw, unsigned long rate,
return 0;
}
-static long clk_bcm2835_i2c_round_rate(struct clk_hw *hw, unsigned long rate,
- unsigned long *parent_rate)
+static int clk_bcm2835_i2c_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
{
- u32 divider = clk_bcm2835_i2c_calc_divider(rate, *parent_rate);
+ u32 divider = clk_bcm2835_i2c_calc_divider(req->rate, req->best_parent_rate);
- return DIV_ROUND_UP(*parent_rate, divider);
+ req->rate = DIV_ROUND_UP(req->best_parent_rate, divider);
+
+ return 0;
}
static unsigned long clk_bcm2835_i2c_recalc_rate(struct clk_hw *hw,
@@ -156,7 +158,7 @@ static unsigned long clk_bcm2835_i2c_recalc_rate(struct clk_hw *hw,
static const struct clk_ops clk_bcm2835_i2c_ops = {
.set_rate = clk_bcm2835_i2c_set_rate,
- .round_rate = clk_bcm2835_i2c_round_rate,
+ .determine_rate = clk_bcm2835_i2c_determine_rate,
.recalc_rate = clk_bcm2835_i2c_recalc_rate,
};
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h
index 347843b4f5dd..bb5ce0a382f9 100644
--- a/drivers/i2c/busses/i2c-designware-core.h
+++ b/drivers/i2c/busses/i2c-designware-core.h
@@ -78,6 +78,7 @@
#define DW_IC_TX_ABRT_SOURCE 0x80
#define DW_IC_ENABLE_STATUS 0x9c
#define DW_IC_CLR_RESTART_DET 0xa8
+#define DW_IC_SMBUS_INTR_MASK 0xcc
#define DW_IC_COMP_PARAM_1 0xf4
#define DW_IC_COMP_VERSION 0xf8
#define DW_IC_SDA_HOLD_MIN_VERS 0x3131312A /* "111*" == v1.11* */
@@ -330,7 +331,6 @@ struct dw_i2c_dev {
struct i2c_dw_semaphore_callbacks {
int (*probe)(struct dw_i2c_dev *dev);
- void (*remove)(struct dw_i2c_dev *dev);
};
int i2c_dw_init_regmap(struct dw_i2c_dev *dev);
diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c
index 41e9b5ecad20..45bfca05bb30 100644
--- a/drivers/i2c/busses/i2c-designware-master.c
+++ b/drivers/i2c/busses/i2c-designware-master.c
@@ -220,6 +220,13 @@ static int i2c_dw_init_master(struct dw_i2c_dev *dev)
/* Disable the adapter */
__i2c_dw_disable(dev);
+ /*
+ * Mask SMBus interrupts to block storms from broken
+ * firmware that leaves IC_SMBUS=1; the handler never
+ * services them.
+ */
+ regmap_write(dev->map, DW_IC_SMBUS_INTR_MASK, 0);
+
/* Write standard speed timing parameters */
regmap_write(dev->map, DW_IC_SS_SCL_HCNT, dev->ss_hcnt);
regmap_write(dev->map, DW_IC_SS_SCL_LCNT, dev->ss_lcnt);
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 34d881572351..7be99656a67d 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -197,15 +197,6 @@ static int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)
return 0;
}
-static void i2c_dw_remove_lock_support(struct dw_i2c_dev *dev)
-{
- if (dev->semaphore_idx < 0)
- return;
-
- if (i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove)
- i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove(dev);
-}
-
static int dw_i2c_plat_probe(struct platform_device *pdev)
{
u32 flags = (uintptr_t)device_get_match_data(&pdev->dev);
@@ -248,7 +239,7 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
ret = i2c_dw_probe_lock_support(dev);
if (ret) {
- ret = dev_err_probe(device, ret, "failed to probe lock support\n");
+ dev_err_probe(device, ret, "failed to probe lock support\n");
goto exit_reset;
}
@@ -339,8 +330,6 @@ static void dw_i2c_plat_remove(struct platform_device *pdev)
i2c_dw_prepare_clk(dev, false);
- i2c_dw_remove_lock_support(dev);
-
reset_control_assert(dev->rst);
}
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 57fbec1259be..81e6e2d7ad3d 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -84,6 +84,7 @@
* Panther Lake-H (SOC) 0xe322 32 hard yes yes yes
* Panther Lake-P (SOC) 0xe422 32 hard yes yes yes
* Wildcat Lake-U (SOC) 0x4d22 32 hard yes yes yes
+ * Diamond Rapids (SOC) 0x5827 32 hard yes yes yes
*
* Features supported by this driver:
* Software PEC no
@@ -242,6 +243,7 @@
#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_P_SMBUS 0x51a3
#define PCI_DEVICE_ID_INTEL_ALDER_LAKE_M_SMBUS 0x54a3
#define PCI_DEVICE_ID_INTEL_BIRCH_STREAM_SMBUS 0x5796
+#define PCI_DEVICE_ID_INTEL_DIAMOND_RAPIDS_SMBUS 0x5827
#define PCI_DEVICE_ID_INTEL_BROXTON_SMBUS 0x5ad4
#define PCI_DEVICE_ID_INTEL_ARROW_LAKE_H_SMBUS 0x7722
#define PCI_DEVICE_ID_INTEL_RAPTOR_LAKE_S_SMBUS 0x7a23
@@ -1054,6 +1056,7 @@ static const struct pci_device_id i801_ids[] = {
{ PCI_DEVICE_DATA(INTEL, METEOR_LAKE_SOC_S_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, METEOR_LAKE_PCH_S_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, BIRCH_STREAM_SMBUS, FEATURES_ICH5) },
+ { PCI_DEVICE_DATA(INTEL, DIAMOND_RAPIDS_SMBUS, FEATURES_ICH5) },
{ PCI_DEVICE_DATA(INTEL, ARROW_LAKE_H_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_H_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_P_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
diff --git a/drivers/i2c/busses/i2c-k1.c b/drivers/i2c/busses/i2c-k1.c
index 6b918770e612..d42c03ef5db5 100644
--- a/drivers/i2c/busses/i2c-k1.c
+++ b/drivers/i2c/busses/i2c-k1.c
@@ -158,11 +158,16 @@ static int spacemit_i2c_handle_err(struct spacemit_i2c_dev *i2c)
{
dev_dbg(i2c->dev, "i2c error status: 0x%08x\n", i2c->status);
- if (i2c->status & (SPACEMIT_SR_BED | SPACEMIT_SR_ALD)) {
+ /* Arbitration Loss Detected */
+ if (i2c->status & SPACEMIT_SR_ALD) {
spacemit_i2c_reset(i2c);
return -EAGAIN;
}
+ /* Bus Error No ACK/NAK */
+ if (i2c->status & SPACEMIT_SR_BED)
+ spacemit_i2c_reset(i2c);
+
return i2c->status & SPACEMIT_SR_ACKNAK ? -ENXIO : -EIO;
}
@@ -224,6 +229,12 @@ static void spacemit_i2c_check_bus_release(struct spacemit_i2c_dev *i2c)
}
}
+static inline void
+spacemit_i2c_clear_int_status(struct spacemit_i2c_dev *i2c, u32 mask)
+{
+ writel(mask & SPACEMIT_I2C_INT_STATUS_MASK, i2c->base + SPACEMIT_ISR);
+}
+
static void spacemit_i2c_init(struct spacemit_i2c_dev *i2c)
{
u32 val;
@@ -267,12 +278,8 @@ static void spacemit_i2c_init(struct spacemit_i2c_dev *i2c)
val = readl(i2c->base + SPACEMIT_IRCR);
val |= SPACEMIT_RCR_SDA_GLITCH_NOFIX;
writel(val, i2c->base + SPACEMIT_IRCR);
-}
-static inline void
-spacemit_i2c_clear_int_status(struct spacemit_i2c_dev *i2c, u32 mask)
-{
- writel(mask & SPACEMIT_I2C_INT_STATUS_MASK, i2c->base + SPACEMIT_ISR);
+ spacemit_i2c_clear_int_status(i2c, SPACEMIT_I2C_INT_STATUS_MASK);
}
static void spacemit_i2c_start(struct spacemit_i2c_dev *i2c)
diff --git a/drivers/i2c/busses/i2c-qcom-cci.c b/drivers/i2c/busses/i2c-qcom-cci.c
index e631d79baf14..884055df1560 100644
--- a/drivers/i2c/busses/i2c-qcom-cci.c
+++ b/drivers/i2c/busses/i2c-qcom-cci.c
@@ -783,8 +783,54 @@ static const struct cci_data cci_v2_data = {
},
};
+static const struct cci_data cci_msm8953_data = {
+ .num_masters = 2,
+ .queue_size = { 64, 16 },
+ .quirks = {
+ .max_write_len = 11,
+ .max_read_len = 12,
+ },
+ .params[I2C_MODE_STANDARD] = {
+ .thigh = 78,
+ .tlow = 114,
+ .tsu_sto = 28,
+ .tsu_sta = 28,
+ .thd_dat = 10,
+ .thd_sta = 77,
+ .tbuf = 118,
+ .scl_stretch_en = 0,
+ .trdhld = 6,
+ .tsp = 1
+ },
+ .params[I2C_MODE_FAST] = {
+ .thigh = 20,
+ .tlow = 28,
+ .tsu_sto = 21,
+ .tsu_sta = 21,
+ .thd_dat = 13,
+ .thd_sta = 18,
+ .tbuf = 32,
+ .scl_stretch_en = 0,
+ .trdhld = 6,
+ .tsp = 3
+ },
+ .params[I2C_MODE_FAST_PLUS] = {
+ .thigh = 16,
+ .tlow = 22,
+ .tsu_sto = 17,
+ .tsu_sta = 18,
+ .thd_dat = 16,
+ .thd_sta = 15,
+ .tbuf = 19,
+ .scl_stretch_en = 1,
+ .trdhld = 3,
+ .tsp = 3
+ },
+};
+
static const struct of_device_id cci_dt_match[] = {
{ .compatible = "qcom,msm8226-cci", .data = &cci_v1_data},
+ { .compatible = "qcom,msm8953-cci", .data = &cci_msm8953_data},
{ .compatible = "qcom,msm8974-cci", .data = &cci_v1_5_data},
{ .compatible = "qcom,msm8996-cci", .data = &cci_v2_data},
diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c
index f84ec056e36d..becf8977979f 100644
--- a/drivers/i2c/busses/i2c-stm32.c
+++ b/drivers/i2c/busses/i2c-stm32.c
@@ -27,8 +27,8 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev,
if (IS_ERR(dma->chan_tx)) {
ret = PTR_ERR(dma->chan_tx);
if (ret != -ENODEV)
- ret = dev_err_probe(dev, ret,
- "can't request DMA tx channel\n");
+ dev_err_probe(dev, ret, "can't request DMA tx channel\n");
+
goto fail_al;
}
@@ -48,8 +48,7 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev,
if (IS_ERR(dma->chan_rx)) {
ret = PTR_ERR(dma->chan_rx);
if (ret != -ENODEV)
- ret = dev_err_probe(dev, ret,
- "can't request DMA rx channel\n");
+ dev_err_probe(dev, ret, "can't request DMA rx channel\n");
goto fail_tx;
}
generated by cgit (git 2.34.1) at 2025-12-10 15:41:41 +0000