diff options
author | 2023-04-24 12:50:20 +0200 | |
---|---|---|
committer | 2023-04-24 12:50:20 +0200 | |
commit | 38c87827ffd3c7e1dd61eee9a7dea13d487dc2ed (patch) | |
tree | e6bd1c3ae56823874a736c1512409c123c9a4219 /drivers/i2c | |
parent | i2c: omap: Improve error reporting for problems during .remove() (diff) | |
parent | i2c: xiic: xiic_xfer(): Fix runtime PM leak on error path (diff) | |
download | linux-38c87827ffd3c7e1dd61eee9a7dea13d487dc2ed.tar.gz linux-38c87827ffd3c7e1dd61eee9a7dea13d487dc2ed.tar.bz2 linux-38c87827ffd3c7e1dd61eee9a7dea13d487dc2ed.zip |
Merge branch 'i2c/for-current' into i2c/for-mergewindow
This should have been in 6.3, but sadly I missed it.
Diffstat (limited to 'drivers/i2c')
-rw-r--r-- | drivers/i2c/busses/i2c-cadence.c | 6 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-hisi.c | 13 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-imx-lpi2c.c | 6 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-mchp-pci1xxxx.c | 60 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-mxs.c | 18 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-ocores.c | 35 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-xgene-slimpro.c | 3 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-xiic.c | 4 | ||||
-rw-r--r-- | drivers/i2c/i2c-core-of.c | 5 |
9 files changed, 95 insertions, 55 deletions
diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c index f1a67c410ad3..3a4edf7e75f9 100644 --- a/drivers/i2c/busses/i2c-cadence.c +++ b/drivers/i2c/busses/i2c-cadence.c @@ -834,8 +834,10 @@ static int cdns_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, #if IS_ENABLED(CONFIG_I2C_SLAVE) /* Check i2c operating mode and switch if possible */ if (id->dev_mode == CDNS_I2C_MODE_SLAVE) { - if (id->slave_state != CDNS_I2C_SLAVE_STATE_IDLE) - return -EAGAIN; + if (id->slave_state != CDNS_I2C_SLAVE_STATE_IDLE) { + ret = -EAGAIN; + goto out; + } /* Set mode to master */ cdns_i2c_set_mode(CDNS_I2C_MODE_MASTER, id); diff --git a/drivers/i2c/busses/i2c-hisi.c b/drivers/i2c/busses/i2c-hisi.c index 8c6c7075c765..e067671b3ce2 100644 --- a/drivers/i2c/busses/i2c-hisi.c +++ b/drivers/i2c/busses/i2c-hisi.c @@ -316,6 +316,13 @@ static void hisi_i2c_xfer_msg(struct hisi_i2c_controller *ctlr) max_write == 0) break; } + + /* + * Disable the TX_EMPTY interrupt after finishing all the messages to + * avoid overwhelming the CPU. + */ + if (ctlr->msg_tx_idx == ctlr->msg_num) + hisi_i2c_disable_int(ctlr, HISI_I2C_INT_TX_EMPTY); } static irqreturn_t hisi_i2c_irq(int irq, void *context) @@ -341,7 +348,11 @@ static irqreturn_t hisi_i2c_irq(int irq, void *context) hisi_i2c_read_rx_fifo(ctlr); out: - if (int_stat & HISI_I2C_INT_TRANS_CPLT || ctlr->xfer_err) { + /* + * Only use TRANS_CPLT to indicate the completion. On error cases we'll + * get two interrupts, INT_ERR first then TRANS_CPLT. + */ + if (int_stat & HISI_I2C_INT_TRANS_CPLT) { hisi_i2c_disable_int(ctlr, HISI_I2C_INT_ALL); hisi_i2c_clear_int(ctlr, HISI_I2C_INT_ALL); complete(ctlr->completion); diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c index 188f2a36d2fd..a49b14d52a98 100644 --- a/drivers/i2c/busses/i2c-imx-lpi2c.c +++ b/drivers/i2c/busses/i2c-imx-lpi2c.c @@ -463,6 +463,8 @@ static int lpi2c_imx_xfer(struct i2c_adapter *adapter, if (num == 1 && msgs[0].len == 0) goto stop; + lpi2c_imx->rx_buf = NULL; + lpi2c_imx->tx_buf = NULL; lpi2c_imx->delivered = 0; lpi2c_imx->msglen = msgs[i].len; init_completion(&lpi2c_imx->complete); @@ -503,10 +505,14 @@ disable: static irqreturn_t lpi2c_imx_isr(int irq, void *dev_id) { struct lpi2c_imx_struct *lpi2c_imx = dev_id; + unsigned int enabled; unsigned int temp; + enabled = readl(lpi2c_imx->base + LPI2C_MIER); + lpi2c_imx_intctrl(lpi2c_imx, 0); temp = readl(lpi2c_imx->base + LPI2C_MSR); + temp &= enabled; if (temp & MSR_RDF) lpi2c_imx_read_rxfifo(lpi2c_imx); diff --git a/drivers/i2c/busses/i2c-mchp-pci1xxxx.c b/drivers/i2c/busses/i2c-mchp-pci1xxxx.c index 09af75921147..b21ffd6df927 100644 --- a/drivers/i2c/busses/i2c-mchp-pci1xxxx.c +++ b/drivers/i2c/busses/i2c-mchp-pci1xxxx.c @@ -48,9 +48,9 @@ * SR_HOLD_TIME_XK_TICKS field will indicate the number of ticks of the * baud clock required to program 'Hold Time' at X KHz. */ -#define SR_HOLD_TIME_100K_TICKS 133 -#define SR_HOLD_TIME_400K_TICKS 20 -#define SR_HOLD_TIME_1000K_TICKS 11 +#define SR_HOLD_TIME_100K_TICKS 150 +#define SR_HOLD_TIME_400K_TICKS 20 +#define SR_HOLD_TIME_1000K_TICKS 12 #define SMB_CORE_COMPLETION_REG_OFF3 (SMBUS_MAST_CORE_ADDR_BASE + 0x23) @@ -65,17 +65,17 @@ * the baud clock required to program 'fair idle delay' at X KHz. Fair idle * delay establishes the MCTP T(IDLE_DELAY) period. */ -#define FAIR_BUS_IDLE_MIN_100K_TICKS 969 -#define FAIR_BUS_IDLE_MIN_400K_TICKS 157 -#define FAIR_BUS_IDLE_MIN_1000K_TICKS 157 +#define FAIR_BUS_IDLE_MIN_100K_TICKS 992 +#define FAIR_BUS_IDLE_MIN_400K_TICKS 500 +#define FAIR_BUS_IDLE_MIN_1000K_TICKS 500 /* * FAIR_IDLE_DELAY_XK_TICKS field will indicate the number of ticks of the * baud clock required to satisfy the fairness protocol at X KHz. */ -#define FAIR_IDLE_DELAY_100K_TICKS 1000 -#define FAIR_IDLE_DELAY_400K_TICKS 500 -#define FAIR_IDLE_DELAY_1000K_TICKS 500 +#define FAIR_IDLE_DELAY_100K_TICKS 963 +#define FAIR_IDLE_DELAY_400K_TICKS 156 +#define FAIR_IDLE_DELAY_1000K_TICKS 156 #define SMB_IDLE_SCALING_100K \ ((FAIR_IDLE_DELAY_100K_TICKS << 16) | FAIR_BUS_IDLE_MIN_100K_TICKS) @@ -105,7 +105,7 @@ */ #define BUS_CLK_100K_LOW_PERIOD_TICKS 156 #define BUS_CLK_400K_LOW_PERIOD_TICKS 41 -#define BUS_CLK_1000K_LOW_PERIOD_TICKS 15 +#define BUS_CLK_1000K_LOW_PERIOD_TICKS 15 /* * BUS_CLK_XK_HIGH_PERIOD_TICKS field defines the number of I2C Baud Clock @@ -131,7 +131,7 @@ */ #define CLK_SYNC_100K 4 #define CLK_SYNC_400K 4 -#define CLK_SYNC_1000K 4 +#define CLK_SYNC_1000K 4 #define SMB_CORE_DATA_TIMING_REG_OFF (SMBUS_MAST_CORE_ADDR_BASE + 0x40) @@ -142,25 +142,25 @@ * determines the SCLK hold time following SDAT driven low during the first * START bit in a transfer. */ -#define FIRST_START_HOLD_100K_TICKS 22 -#define FIRST_START_HOLD_400K_TICKS 16 -#define FIRST_START_HOLD_1000K_TICKS 6 +#define FIRST_START_HOLD_100K_TICKS 23 +#define FIRST_START_HOLD_400K_TICKS 8 +#define FIRST_START_HOLD_1000K_TICKS 12 /* * STOP_SETUP_XK_TICKS will indicate the number of ticks of the baud clock * required to program 'STOP_SETUP' timer at X KHz. This timer determines the * SDAT setup time from the rising edge of SCLK for a STOP condition. */ -#define STOP_SETUP_100K_TICKS 157 +#define STOP_SETUP_100K_TICKS 150 #define STOP_SETUP_400K_TICKS 20 -#define STOP_SETUP_1000K_TICKS 12 +#define STOP_SETUP_1000K_TICKS 12 /* * RESTART_SETUP_XK_TICKS will indicate the number of ticks of the baud clock * required to program 'RESTART_SETUP' timer at X KHz. This timer determines the * SDAT setup time from the rising edge of SCLK for a repeated START condition. */ -#define RESTART_SETUP_100K_TICKS 157 +#define RESTART_SETUP_100K_TICKS 156 #define RESTART_SETUP_400K_TICKS 20 #define RESTART_SETUP_1000K_TICKS 12 @@ -169,7 +169,7 @@ * required to program 'DATA_HOLD' timer at X KHz. This timer determines the * SDAT hold time following SCLK driven low. */ -#define DATA_HOLD_100K_TICKS 2 +#define DATA_HOLD_100K_TICKS 12 #define DATA_HOLD_400K_TICKS 2 #define DATA_HOLD_1000K_TICKS 2 @@ -190,35 +190,35 @@ * Bus Idle Minimum time = BUS_IDLE_MIN[7:0] x Baud_Clock_Period x * (BUS_IDLE_MIN_XK_TICKS[7] ? 4,1) */ -#define BUS_IDLE_MIN_100K_TICKS 167UL -#define BUS_IDLE_MIN_400K_TICKS 139UL -#define BUS_IDLE_MIN_1000K_TICKS 133UL +#define BUS_IDLE_MIN_100K_TICKS 36UL +#define BUS_IDLE_MIN_400K_TICKS 10UL +#define BUS_IDLE_MIN_1000K_TICKS 4UL /* * CTRL_CUM_TIME_OUT_XK_TICKS defines SMBus Controller Cumulative Time-Out. * SMBus Controller Cumulative Time-Out duration = * CTRL_CUM_TIME_OUT_XK_TICKS[7:0] x Baud_Clock_Period x 2048 */ -#define CTRL_CUM_TIME_OUT_100K_TICKS 159 -#define CTRL_CUM_TIME_OUT_400K_TICKS 159 -#define CTRL_CUM_TIME_OUT_1000K_TICKS 159 +#define CTRL_CUM_TIME_OUT_100K_TICKS 76 +#define CTRL_CUM_TIME_OUT_400K_TICKS 76 +#define CTRL_CUM_TIME_OUT_1000K_TICKS 76 /* * TARGET_CUM_TIME_OUT_XK_TICKS defines SMBus Target Cumulative Time-Out duration. * SMBus Target Cumulative Time-Out duration = TARGET_CUM_TIME_OUT_XK_TICKS[7:0] x * Baud_Clock_Period x 4096 */ -#define TARGET_CUM_TIME_OUT_100K_TICKS 199 -#define TARGET_CUM_TIME_OUT_400K_TICKS 199 -#define TARGET_CUM_TIME_OUT_1000K_TICKS 199 +#define TARGET_CUM_TIME_OUT_100K_TICKS 95 +#define TARGET_CUM_TIME_OUT_400K_TICKS 95 +#define TARGET_CUM_TIME_OUT_1000K_TICKS 95 /* * CLOCK_HIGH_TIME_OUT_XK defines Clock High time out period. * Clock High time out period = CLOCK_HIGH_TIME_OUT_XK[7:0] x Baud_Clock_Period x 8 */ -#define CLOCK_HIGH_TIME_OUT_100K_TICKS 204 -#define CLOCK_HIGH_TIME_OUT_400K_TICKS 204 -#define CLOCK_HIGH_TIME_OUT_1000K_TICKS 204 +#define CLOCK_HIGH_TIME_OUT_100K_TICKS 97 +#define CLOCK_HIGH_TIME_OUT_400K_TICKS 97 +#define CLOCK_HIGH_TIME_OUT_1000K_TICKS 97 #define TO_SCALING_100K \ ((BUS_IDLE_MIN_100K_TICKS << 24) | (CTRL_CUM_TIME_OUT_100K_TICKS << 16) | \ diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c index d113bed79545..e0f3b3545cfe 100644 --- a/drivers/i2c/busses/i2c-mxs.c +++ b/drivers/i2c/busses/i2c-mxs.c @@ -171,7 +171,7 @@ static void mxs_i2c_dma_irq_callback(void *param) } static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap, - struct i2c_msg *msg, uint32_t flags) + struct i2c_msg *msg, u8 *buf, uint32_t flags) { struct dma_async_tx_descriptor *desc; struct mxs_i2c_dev *i2c = i2c_get_adapdata(adap); @@ -226,7 +226,7 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap, } /* Queue the DMA data transfer. */ - sg_init_one(&i2c->sg_io[1], msg->buf, msg->len); + sg_init_one(&i2c->sg_io[1], buf, msg->len); dma_map_sg(i2c->dev, &i2c->sg_io[1], 1, DMA_FROM_DEVICE); desc = dmaengine_prep_slave_sg(i2c->dmach, &i2c->sg_io[1], 1, DMA_DEV_TO_MEM, @@ -259,7 +259,7 @@ static int mxs_i2c_dma_setup_xfer(struct i2c_adapter *adap, /* Queue the DMA data transfer. */ sg_init_table(i2c->sg_io, 2); sg_set_buf(&i2c->sg_io[0], &i2c->addr_data, 1); - sg_set_buf(&i2c->sg_io[1], msg->buf, msg->len); + sg_set_buf(&i2c->sg_io[1], buf, msg->len); dma_map_sg(i2c->dev, i2c->sg_io, 2, DMA_TO_DEVICE); desc = dmaengine_prep_slave_sg(i2c->dmach, i2c->sg_io, 2, DMA_MEM_TO_DEV, @@ -563,6 +563,7 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, struct mxs_i2c_dev *i2c = i2c_get_adapdata(adap); int ret; int flags; + u8 *dma_buf; int use_pio = 0; unsigned long time_left; @@ -588,13 +589,20 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, if (ret && (ret != -ENXIO)) mxs_i2c_reset(i2c); } else { + dma_buf = i2c_get_dma_safe_msg_buf(msg, 1); + if (!dma_buf) + return -ENOMEM; + reinit_completion(&i2c->cmd_complete); - ret = mxs_i2c_dma_setup_xfer(adap, msg, flags); - if (ret) + ret = mxs_i2c_dma_setup_xfer(adap, msg, dma_buf, flags); + if (ret) { + i2c_put_dma_safe_msg_buf(dma_buf, msg, false); return ret; + } time_left = wait_for_completion_timeout(&i2c->cmd_complete, msecs_to_jiffies(1000)); + i2c_put_dma_safe_msg_buf(dma_buf, msg, true); if (!time_left) goto timeout; diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c index a0af027db04c..2e575856c5cd 100644 --- a/drivers/i2c/busses/i2c-ocores.c +++ b/drivers/i2c/busses/i2c-ocores.c @@ -342,18 +342,18 @@ static int ocores_poll_wait(struct ocores_i2c *i2c) * ocores_isr(), we just add our polling code around it. * * It can run in atomic context + * + * Return: 0 on success, -ETIMEDOUT on timeout */ -static void ocores_process_polling(struct ocores_i2c *i2c) +static int ocores_process_polling(struct ocores_i2c *i2c) { - while (1) { - irqreturn_t ret; - int err; + irqreturn_t ret; + int err = 0; + while (1) { err = ocores_poll_wait(i2c); - if (err) { - i2c->state = STATE_ERROR; + if (err) break; /* timeout */ - } ret = ocores_isr(-1, i2c); if (ret == IRQ_NONE) @@ -364,13 +364,15 @@ static void ocores_process_polling(struct ocores_i2c *i2c) break; } } + + return err; } static int ocores_xfer_core(struct ocores_i2c *i2c, struct i2c_msg *msgs, int num, bool polling) { - int ret; + int ret = 0; u8 ctrl; ctrl = oc_getreg(i2c, OCI2C_CONTROL); @@ -388,15 +390,16 @@ static int ocores_xfer_core(struct ocores_i2c *i2c, oc_setreg(i2c, OCI2C_CMD, OCI2C_CMD_START); if (polling) { - ocores_process_polling(i2c); + ret = ocores_process_polling(i2c); } else { - ret = wait_event_timeout(i2c->wait, - (i2c->state == STATE_ERROR) || - (i2c->state == STATE_DONE), HZ); - if (ret == 0) { - ocores_process_timeout(i2c); - return -ETIMEDOUT; - } + if (wait_event_timeout(i2c->wait, + (i2c->state == STATE_ERROR) || + (i2c->state == STATE_DONE), HZ) == 0) + ret = -ETIMEDOUT; + } + if (ret) { + ocores_process_timeout(i2c); + return ret; } return (i2c->state == STATE_DONE) ? num : -EIO; diff --git a/drivers/i2c/busses/i2c-xgene-slimpro.c b/drivers/i2c/busses/i2c-xgene-slimpro.c index 63259b3ea5ab..3538d36368a9 100644 --- a/drivers/i2c/busses/i2c-xgene-slimpro.c +++ b/drivers/i2c/busses/i2c-xgene-slimpro.c @@ -308,6 +308,9 @@ static int slimpro_i2c_blkwr(struct slimpro_i2c_dev *ctx, u32 chip, u32 msg[3]; int rc; + if (writelen > I2C_SMBUS_BLOCK_MAX) + return -EINVAL; + memcpy(ctx->dma_buffer, data, writelen); paddr = dma_map_single(ctx->dev, ctx->dma_buffer, writelen, DMA_TO_DEVICE); diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c index e7d37eb20f2b..8a3d9817cb41 100644 --- a/drivers/i2c/busses/i2c-xiic.c +++ b/drivers/i2c/busses/i2c-xiic.c @@ -1164,7 +1164,7 @@ static int xiic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) err = xiic_start_xfer(i2c, msgs, num); if (err < 0) { dev_err(adap->dev.parent, "Error xiic_start_xfer\n"); - return err; + goto out; } err = wait_for_completion_timeout(&i2c->completion, XIIC_XFER_TIMEOUT); @@ -1178,6 +1178,8 @@ static int xiic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) err = (i2c->state == STATE_DONE) ? num : -EIO; } mutex_unlock(&i2c->lock); + +out: pm_runtime_mark_last_busy(i2c->dev); pm_runtime_put_autosuspend(i2c->dev); return err; diff --git a/drivers/i2c/i2c-core-of.c b/drivers/i2c/i2c-core-of.c index aa93467784c2..5c1376386897 100644 --- a/drivers/i2c/i2c-core-of.c +++ b/drivers/i2c/i2c-core-of.c @@ -178,6 +178,11 @@ static int of_i2c_notify(struct notifier_block *nb, unsigned long action, return NOTIFY_OK; } + /* + * Clear the flag before adding the device so that fw_devlink + * doesn't skip adding consumers to this device. + */ + rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE; client = of_i2c_register_device(adap, rd->dn); if (IS_ERR(client)) { dev_err(&adap->dev, "failed to create client for '%pOF'\n", |