diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-amd-asf-plat.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-cgbc.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-common.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-master.c | 4 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-pcidrv.c | 4 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 4 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-slave.c | 4 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-imx.c | 9 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-ljca.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-microchip-corei2c.c | 122 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-nomadik.c | 1 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 8 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-pnx.c | 4 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-rcar.c | 20 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-riic.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/i2c-atr.c | 14 | ||||
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 1 | ||||
| -rw-r--r-- | drivers/i2c/i2c-core-of-prober.c | 10 | ||||
| -rw-r--r-- | drivers/i2c/i2c-slave-testunit.c | 19 | ||||
| -rw-r--r-- | drivers/i2c/muxes/i2c-demux-pinctrl.c | 6 |
20 files changed, 165 insertions, 75 deletions
diff --git a/drivers/i2c/busses/i2c-amd-asf-plat.c b/drivers/i2c/busses/i2c-amd-asf-plat.c index ba47df5370c7..7512614bf4b7 100644 --- a/drivers/i2c/busses/i2c-amd-asf-plat.c +++ b/drivers/i2c/busses/i2c-amd-asf-plat.c @@ -364,6 +364,6 @@ static struct platform_driver amd_asf_driver = { }; module_platform_driver(amd_asf_driver); -MODULE_IMPORT_NS(PIIX4_SMBUS); +MODULE_IMPORT_NS("PIIX4_SMBUS"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("AMD Alert Standard Format Driver"); diff --git a/drivers/i2c/busses/i2c-cgbc.c b/drivers/i2c/busses/i2c-cgbc.c index eba0b205de11..f054d167ac47 100644 --- a/drivers/i2c/busses/i2c-cgbc.c +++ b/drivers/i2c/busses/i2c-cgbc.c @@ -395,7 +395,7 @@ static struct platform_driver cgbc_i2c_driver = { .name = "cgbc-i2c", }, .probe = cgbc_i2c_probe, - .remove_new = cgbc_i2c_remove, + .remove = cgbc_i2c_remove, }; module_platform_driver(cgbc_i2c_driver); diff --git a/drivers/i2c/busses/i2c-designware-common.c b/drivers/i2c/busses/i2c-designware-common.c index 857783d458fb..183a35038eef 100644 --- a/drivers/i2c/busses/i2c-designware-common.c +++ b/drivers/i2c/busses/i2c-designware-common.c @@ -29,7 +29,7 @@ #include <linux/types.h> #include <linux/units.h> -#define DEFAULT_SYMBOL_NAMESPACE I2C_DW_COMMON +#define DEFAULT_SYMBOL_NAMESPACE "I2C_DW_COMMON" #include "i2c-designware-core.h" diff --git a/drivers/i2c/busses/i2c-designware-master.c b/drivers/i2c/busses/i2c-designware-master.c index eca8998d640f..c8cbe5b1aeb1 100644 --- a/drivers/i2c/busses/i2c-designware-master.c +++ b/drivers/i2c/busses/i2c-designware-master.c @@ -22,7 +22,7 @@ #include <linux/regmap.h> #include <linux/reset.h> -#define DEFAULT_SYMBOL_NAMESPACE I2C_DW +#define DEFAULT_SYMBOL_NAMESPACE "I2C_DW" #include "i2c-designware-core.h" @@ -1094,4 +1094,4 @@ EXPORT_SYMBOL_GPL(i2c_dw_probe_master); MODULE_DESCRIPTION("Synopsys DesignWare I2C bus master adapter"); MODULE_LICENSE("GPL"); -MODULE_IMPORT_NS(I2C_DW_COMMON); +MODULE_IMPORT_NS("I2C_DW_COMMON"); diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c index 38265c3dc454..8e0267c7cc29 100644 --- a/drivers/i2c/busses/i2c-designware-pcidrv.c +++ b/drivers/i2c/busses/i2c-designware-pcidrv.c @@ -368,5 +368,5 @@ module_pci_driver(dw_i2c_driver); MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>"); MODULE_DESCRIPTION("Synopsys DesignWare PCI I2C bus adapter"); MODULE_LICENSE("GPL"); -MODULE_IMPORT_NS(I2C_DW); -MODULE_IMPORT_NS(I2C_DW_COMMON); +MODULE_IMPORT_NS("I2C_DW"); +MODULE_IMPORT_NS("I2C_DW_COMMON"); diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 3e12aab6bf2d..d6e1ee935399 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -397,5 +397,5 @@ module_exit(dw_i2c_exit_driver); MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>"); MODULE_DESCRIPTION("Synopsys DesignWare I2C bus adapter"); MODULE_LICENSE("GPL"); -MODULE_IMPORT_NS(I2C_DW); -MODULE_IMPORT_NS(I2C_DW_COMMON); +MODULE_IMPORT_NS("I2C_DW"); +MODULE_IMPORT_NS("I2C_DW_COMMON"); diff --git a/drivers/i2c/busses/i2c-designware-slave.c b/drivers/i2c/busses/i2c-designware-slave.c index fad568e3523b..dc2b788eac5b 100644 --- a/drivers/i2c/busses/i2c-designware-slave.c +++ b/drivers/i2c/busses/i2c-designware-slave.c @@ -16,7 +16,7 @@ #include <linux/pm_runtime.h> #include <linux/regmap.h> -#define DEFAULT_SYMBOL_NAMESPACE I2C_DW +#define DEFAULT_SYMBOL_NAMESPACE "I2C_DW" #include "i2c-designware-core.h" @@ -282,4 +282,4 @@ EXPORT_SYMBOL_GPL(i2c_dw_probe_slave); MODULE_AUTHOR("Luis Oliveira <lolivei@synopsys.com>"); MODULE_DESCRIPTION("Synopsys DesignWare I2C bus slave adapter"); MODULE_LICENSE("GPL v2"); -MODULE_IMPORT_NS(I2C_DW_COMMON); +MODULE_IMPORT_NS("I2C_DW_COMMON"); diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index f751d231ded8..5c9a8dfbc4a0 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -335,6 +335,7 @@ static const struct of_device_id i2c_imx_dt_ids[] = { { .compatible = "fsl,imx6sll-i2c", .data = &imx6_i2c_hwdata, }, { .compatible = "fsl,imx6sx-i2c", .data = &imx6_i2c_hwdata, }, { .compatible = "fsl,imx6ul-i2c", .data = &imx6_i2c_hwdata, }, + { .compatible = "fsl,imx7d-i2c", .data = &imx6_i2c_hwdata, }, { .compatible = "fsl,imx7s-i2c", .data = &imx6_i2c_hwdata, }, { .compatible = "fsl,imx8mm-i2c", .data = &imx6_i2c_hwdata, }, { .compatible = "fsl,imx8mn-i2c", .data = &imx6_i2c_hwdata, }, @@ -532,22 +533,20 @@ static void i2c_imx_dma_free(struct imx_i2c_struct *i2c_imx) static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy, bool atomic) { + bool multi_master = i2c_imx->multi_master; unsigned long orig_jiffies = jiffies; unsigned int temp; - if (!i2c_imx->multi_master) - return 0; - while (1) { temp = imx_i2c_read_reg(i2c_imx, IMX_I2C_I2SR); /* check for arbitration lost */ - if (temp & I2SR_IAL) { + if (multi_master && (temp & I2SR_IAL)) { i2c_imx_clear_irq(i2c_imx, I2SR_IAL); return -EAGAIN; } - if (for_busy && (temp & I2SR_IBB)) { + if (for_busy && (!multi_master || (temp & I2SR_IBB))) { i2c_imx->stopped = 0; break; } diff --git a/drivers/i2c/busses/i2c-ljca.c b/drivers/i2c/busses/i2c-ljca.c index 1dc516ef0fdd..93274f0c2d72 100644 --- a/drivers/i2c/busses/i2c-ljca.c +++ b/drivers/i2c/busses/i2c-ljca.c @@ -340,4 +340,4 @@ MODULE_AUTHOR("Zhifeng Wang <zhifeng.wang@intel.com>"); MODULE_AUTHOR("Lixu Zhang <lixu.zhang@intel.com>"); MODULE_DESCRIPTION("Intel La Jolla Cove Adapter USB-I2C driver"); MODULE_LICENSE("GPL"); -MODULE_IMPORT_NS(LJCA); +MODULE_IMPORT_NS("LJCA"); diff --git a/drivers/i2c/busses/i2c-microchip-corei2c.c b/drivers/i2c/busses/i2c-microchip-corei2c.c index d1543e7d8380..5db73429125c 100644 --- a/drivers/i2c/busses/i2c-microchip-corei2c.c +++ b/drivers/i2c/busses/i2c-microchip-corei2c.c @@ -93,27 +93,35 @@ * @base: pointer to register struct * @dev: device reference * @i2c_clk: clock reference for i2c input clock + * @msg_queue: pointer to the messages requiring sending * @buf: pointer to msg buffer for easier use * @msg_complete: xfer completion object * @adapter: core i2c abstraction * @msg_err: error code for completed message * @bus_clk_rate: current i2c bus clock rate * @isr_status: cached copy of local ISR status + * @total_num: total number of messages to be sent/received + * @current_num: index of the current message being sent/received * @msg_len: number of bytes transferred in msg * @addr: address of the current slave + * @restart_needed: whether or not a repeated start is required after current message */ struct mchp_corei2c_dev { void __iomem *base; struct device *dev; struct clk *i2c_clk; + struct i2c_msg *msg_queue; u8 *buf; struct completion msg_complete; struct i2c_adapter adapter; int msg_err; + int total_num; + int current_num; u32 bus_clk_rate; u32 isr_status; u16 msg_len; u8 addr; + bool restart_needed; }; static void mchp_corei2c_core_disable(struct mchp_corei2c_dev *idev) @@ -222,6 +230,47 @@ static int mchp_corei2c_fill_tx(struct mchp_corei2c_dev *idev) return 0; } +static void mchp_corei2c_next_msg(struct mchp_corei2c_dev *idev) +{ + struct i2c_msg *this_msg; + u8 ctrl; + + if (idev->current_num >= idev->total_num) { + complete(&idev->msg_complete); + return; + } + + /* + * If there's been an error, the isr needs to return control + * to the "main" part of the driver, so as not to keep sending + * messages once it completes and clears the SI bit. + */ + if (idev->msg_err) { + complete(&idev->msg_complete); + return; + } + + this_msg = idev->msg_queue++; + + if (idev->current_num < (idev->total_num - 1)) { + struct i2c_msg *next_msg = idev->msg_queue; + + idev->restart_needed = next_msg->flags & I2C_M_RD; + } else { + idev->restart_needed = false; + } + + idev->addr = i2c_8bit_addr_from_msg(this_msg); + idev->msg_len = this_msg->len; + idev->buf = this_msg->buf; + + ctrl = readb(idev->base + CORE_I2C_CTRL); + ctrl |= CTRL_STA; + writeb(ctrl, idev->base + CORE_I2C_CTRL); + + idev->current_num++; +} + static irqreturn_t mchp_corei2c_handle_isr(struct mchp_corei2c_dev *idev) { u32 status = idev->isr_status; @@ -238,8 +287,6 @@ static irqreturn_t mchp_corei2c_handle_isr(struct mchp_corei2c_dev *idev) ctrl &= ~CTRL_STA; writeb(idev->addr, idev->base + CORE_I2C_DATA); writeb(ctrl, idev->base + CORE_I2C_CTRL); - if (idev->msg_len == 0) - finished = true; break; case STATUS_M_ARB_LOST: idev->msg_err = -EAGAIN; @@ -247,10 +294,14 @@ static irqreturn_t mchp_corei2c_handle_isr(struct mchp_corei2c_dev *idev) break; case STATUS_M_SLAW_ACK: case STATUS_M_TX_DATA_ACK: - if (idev->msg_len > 0) + if (idev->msg_len > 0) { mchp_corei2c_fill_tx(idev); - else - last_byte = true; + } else { + if (idev->restart_needed) + finished = true; + else + last_byte = true; + } break; case STATUS_M_TX_DATA_NACK: case STATUS_M_SLAR_NACK: @@ -287,7 +338,7 @@ static irqreturn_t mchp_corei2c_handle_isr(struct mchp_corei2c_dev *idev) mchp_corei2c_stop(idev); if (last_byte || finished) - complete(&idev->msg_complete); + mchp_corei2c_next_msg(idev); return IRQ_HANDLED; } @@ -311,21 +362,48 @@ static irqreturn_t mchp_corei2c_isr(int irq, void *_dev) return ret; } -static int mchp_corei2c_xfer_msg(struct mchp_corei2c_dev *idev, - struct i2c_msg *msg) +static int mchp_corei2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, + int num) { - u8 ctrl; + struct mchp_corei2c_dev *idev = i2c_get_adapdata(adap); + struct i2c_msg *this_msg = msgs; unsigned long time_left; + u8 ctrl; + + mchp_corei2c_core_enable(idev); + + /* + * The isr controls the flow of a transfer, this info needs to be saved + * to a location that it can access the queue information from. + */ + idev->restart_needed = false; + idev->msg_queue = msgs; + idev->total_num = num; + idev->current_num = 0; - idev->addr = i2c_8bit_addr_from_msg(msg); - idev->msg_len = msg->len; - idev->buf = msg->buf; + /* + * But the first entry to the isr is triggered by the start in this + * function, so the first message needs to be "dequeued". + */ + idev->addr = i2c_8bit_addr_from_msg(this_msg); + idev->msg_len = this_msg->len; + idev->buf = this_msg->buf; idev->msg_err = 0; - reinit_completion(&idev->msg_complete); + if (idev->total_num > 1) { + struct i2c_msg *next_msg = msgs + 1; - mchp_corei2c_core_enable(idev); + idev->restart_needed = next_msg->flags & I2C_M_RD; + } + idev->current_num++; + idev->msg_queue++; + + reinit_completion(&idev->msg_complete); + + /* + * Send the first start to pass control to the isr + */ ctrl = readb(idev->base + CORE_I2C_CTRL); ctrl |= CTRL_STA; writeb(ctrl, idev->base + CORE_I2C_CTRL); @@ -335,20 +413,8 @@ static int mchp_corei2c_xfer_msg(struct mchp_corei2c_dev *idev, if (!time_left) return -ETIMEDOUT; - return idev->msg_err; -} - -static int mchp_corei2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, - int num) -{ - struct mchp_corei2c_dev *idev = i2c_get_adapdata(adap); - int i, ret; - - for (i = 0; i < num; i++) { - ret = mchp_corei2c_xfer_msg(idev, msgs++); - if (ret) - return ret; - } + if (idev->msg_err) + return idev->msg_err; return num; } diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index efb33802804f..d2877e4cc28d 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c @@ -1075,6 +1075,7 @@ static const struct of_device_id nmk_i2c_eyeq_match_table[] = { .compatible = "mobileye,eyeq6h-i2c", .data = (void *)NMK_I2C_EYEQ_FLAG_32B_BUS, }, + { /* sentinel */ } }; static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index 9402fa3811c5..dd75916157f0 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -195,7 +195,7 @@ int piix4_sb800_region_request(struct device *dev, struct sb800_mmio_cfg *mmio_c return 0; } -EXPORT_SYMBOL_NS_GPL(piix4_sb800_region_request, PIIX4_SMBUS); +EXPORT_SYMBOL_NS_GPL(piix4_sb800_region_request, "PIIX4_SMBUS"); void piix4_sb800_region_release(struct device *dev, struct sb800_mmio_cfg *mmio_cfg) { @@ -208,7 +208,7 @@ void piix4_sb800_region_release(struct device *dev, struct sb800_mmio_cfg *mmio_ release_region(SB800_PIIX4_SMB_IDX, SB800_PIIX4_SMB_MAP_SIZE); } -EXPORT_SYMBOL_NS_GPL(piix4_sb800_region_release, PIIX4_SMBUS); +EXPORT_SYMBOL_NS_GPL(piix4_sb800_region_release, "PIIX4_SMBUS"); static bool piix4_sb800_use_mmio(struct pci_dev *PIIX4_dev) { @@ -591,7 +591,7 @@ int piix4_transaction(struct i2c_adapter *piix4_adapter, unsigned short piix4_sm inb_p(SMBHSTDAT1)); return result; } -EXPORT_SYMBOL_NS_GPL(piix4_transaction, PIIX4_SMBUS); +EXPORT_SYMBOL_NS_GPL(piix4_transaction, "PIIX4_SMBUS"); /* Return negative errno on error. */ static s32 piix4_access(struct i2c_adapter * adap, u16 addr, @@ -767,7 +767,7 @@ int piix4_sb800_port_sel(u8 port, struct sb800_mmio_cfg *mmio_cfg) return (smba_en_lo & piix4_port_mask_sb800); } -EXPORT_SYMBOL_NS_GPL(piix4_sb800_port_sel, PIIX4_SMBUS); +EXPORT_SYMBOL_NS_GPL(piix4_sb800_port_sel, "PIIX4_SMBUS"); /* * Handles access to multiple SMBus ports on the SB800. diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c index d4d139b97513..9a1af5bbd604 100644 --- a/drivers/i2c/busses/i2c-pnx.c +++ b/drivers/i2c/busses/i2c-pnx.c @@ -95,7 +95,7 @@ enum { static inline int wait_timeout(struct i2c_pnx_algo_data *data) { - long timeout = data->timeout; + long timeout = jiffies_to_msecs(data->timeout); while (timeout > 0 && (ioread32(I2C_REG_STS(data)) & mstatus_active)) { mdelay(1); @@ -106,7 +106,7 @@ static inline int wait_timeout(struct i2c_pnx_algo_data *data) static inline int wait_reset(struct i2c_pnx_algo_data *data) { - long timeout = data->timeout; + long timeout = jiffies_to_msecs(data->timeout); while (timeout > 0 && (ioread32(I2C_REG_CTL(data)) & mcntrl_reset)) { mdelay(1); diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index a7b77d14ee86..5693a38da7b5 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -130,6 +130,8 @@ #define ID_P_PM_BLOCKED BIT(31) #define ID_P_MASK GENMASK(31, 27) +#define ID_SLAVE_NACK BIT(0) + enum rcar_i2c_type { I2C_RCAR_GEN1, I2C_RCAR_GEN2, @@ -166,6 +168,7 @@ struct rcar_i2c_priv { int irq; struct i2c_client *host_notify_client; + u8 slave_flags; }; #define rcar_i2c_priv_to_dev(p) ((p)->adap.dev.parent) @@ -655,6 +658,7 @@ static bool rcar_i2c_slave_irq(struct rcar_i2c_priv *priv) { u32 ssr_raw, ssr_filtered; u8 value; + int ret; ssr_raw = rcar_i2c_read(priv, ICSSR) & 0xff; ssr_filtered = ssr_raw & rcar_i2c_read(priv, ICSIER); @@ -670,7 +674,10 @@ static bool rcar_i2c_slave_irq(struct rcar_i2c_priv *priv) rcar_i2c_write(priv, ICRXTX, value); rcar_i2c_write(priv, ICSIER, SDE | SSR | SAR); } else { - i2c_slave_event(priv->slave, I2C_SLAVE_WRITE_REQUESTED, &value); + ret = i2c_slave_event(priv->slave, I2C_SLAVE_WRITE_REQUESTED, &value); + if (ret) + priv->slave_flags |= ID_SLAVE_NACK; + rcar_i2c_read(priv, ICRXTX); /* dummy read */ rcar_i2c_write(priv, ICSIER, SDR | SSR | SAR); } @@ -683,18 +690,21 @@ static bool rcar_i2c_slave_irq(struct rcar_i2c_priv *priv) if (ssr_filtered & SSR) { i2c_slave_event(priv->slave, I2C_SLAVE_STOP, &value); rcar_i2c_write(priv, ICSCR, SIE | SDBS); /* clear our NACK */ + priv->slave_flags &= ~ID_SLAVE_NACK; rcar_i2c_write(priv, ICSIER, SAR); rcar_i2c_write(priv, ICSSR, ~SSR & 0xff); } /* master wants to write to us */ if (ssr_filtered & SDR) { - int ret; - value = rcar_i2c_read(priv, ICRXTX); ret = i2c_slave_event(priv->slave, I2C_SLAVE_WRITE_RECEIVED, &value); - /* Send NACK in case of error */ - rcar_i2c_write(priv, ICSCR, SIE | SDBS | (ret < 0 ? FNA : 0)); + if (ret) + priv->slave_flags |= ID_SLAVE_NACK; + + /* Send NACK in case of error, but it will come 1 byte late :( */ + rcar_i2c_write(priv, ICSCR, SIE | SDBS | + (priv->slave_flags & ID_SLAVE_NACK ? FNA : 0)); rcar_i2c_write(priv, ICSSR, ~SDR & 0xff); } diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index c218f73c3650..9264adc97ca9 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -352,7 +352,7 @@ static int riic_init_hw(struct riic_dev *riic) if (brl <= (0x1F + 3)) break; - total_ticks /= 2; + total_ticks = DIV_ROUND_UP(total_ticks, 2); rate /= 2; } diff --git a/drivers/i2c/i2c-atr.c b/drivers/i2c/i2c-atr.c index f21475ae5921..8fe9ddff8e96 100644 --- a/drivers/i2c/i2c-atr.c +++ b/drivers/i2c/i2c-atr.c @@ -412,7 +412,7 @@ static int i2c_atr_bus_notifier_call(struct notifier_block *nb, dev_name(dev), ret); break; - case BUS_NOTIFY_DEL_DEVICE: + case BUS_NOTIFY_REMOVED_DEVICE: i2c_atr_detach_client(client->adapter, client); break; @@ -547,7 +547,7 @@ err_destroy_mutex: return ERR_PTR(ret); } -EXPORT_SYMBOL_NS_GPL(i2c_atr_new, I2C_ATR); +EXPORT_SYMBOL_NS_GPL(i2c_atr_new, "I2C_ATR"); void i2c_atr_delete(struct i2c_atr *atr) { @@ -562,7 +562,7 @@ void i2c_atr_delete(struct i2c_atr *atr) mutex_destroy(&atr->lock); kfree(atr); } -EXPORT_SYMBOL_NS_GPL(i2c_atr_delete, I2C_ATR); +EXPORT_SYMBOL_NS_GPL(i2c_atr_delete, "I2C_ATR"); int i2c_atr_add_adapter(struct i2c_atr *atr, u32 chan_id, struct device *adapter_parent, @@ -657,7 +657,7 @@ err_fwnode_put: kfree(chan); return ret; } -EXPORT_SYMBOL_NS_GPL(i2c_atr_add_adapter, I2C_ATR); +EXPORT_SYMBOL_NS_GPL(i2c_atr_add_adapter, "I2C_ATR"); void i2c_atr_del_adapter(struct i2c_atr *atr, u32 chan_id) { @@ -690,19 +690,19 @@ void i2c_atr_del_adapter(struct i2c_atr *atr, u32 chan_id) kfree(chan->orig_addrs); kfree(chan); } -EXPORT_SYMBOL_NS_GPL(i2c_atr_del_adapter, I2C_ATR); +EXPORT_SYMBOL_NS_GPL(i2c_atr_del_adapter, "I2C_ATR"); void i2c_atr_set_driver_data(struct i2c_atr *atr, void *data) { atr->priv = data; } -EXPORT_SYMBOL_NS_GPL(i2c_atr_set_driver_data, I2C_ATR); +EXPORT_SYMBOL_NS_GPL(i2c_atr_set_driver_data, "I2C_ATR"); void *i2c_atr_get_driver_data(struct i2c_atr *atr) { return atr->priv; } -EXPORT_SYMBOL_NS_GPL(i2c_atr_get_driver_data, I2C_ATR); +EXPORT_SYMBOL_NS_GPL(i2c_atr_get_driver_data, "I2C_ATR"); MODULE_AUTHOR("Luca Ceresoli <luca.ceresoli@bootlin.com>"); MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>"); diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 7c810893bfa3..75d30861ffe2 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1562,6 +1562,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap) res = device_add(&adap->dev); if (res) { pr_err("adapter '%s': can't register device (%d)\n", adap->name, res); + put_device(&adap->dev); goto out_list; } diff --git a/drivers/i2c/i2c-core-of-prober.c b/drivers/i2c/i2c-core-of-prober.c index b9ca785f8b17..0a66267e4836 100644 --- a/drivers/i2c/i2c-core-of-prober.c +++ b/drivers/i2c/i2c-core-of-prober.c @@ -181,7 +181,7 @@ out_put_i2c_adapter: return ret; } -EXPORT_SYMBOL_NS_GPL(i2c_of_probe_component, I2C_OF_PROBER); +EXPORT_SYMBOL_NS_GPL(i2c_of_probe_component, "I2C_OF_PROBER"); static int i2c_of_probe_simple_get_supply(struct device *dev, struct device_node *node, struct i2c_of_probe_simple_ctx *ctx) @@ -366,7 +366,7 @@ out_put_node: of_node_put(node); return ret; } -EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_enable, I2C_OF_PROBER); +EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_enable, "I2C_OF_PROBER"); /** * i2c_of_probe_simple_cleanup_early - \ @@ -383,7 +383,7 @@ void i2c_of_probe_simple_cleanup_early(struct device *dev, void *data) i2c_of_probe_simple_put_gpiod(ctx); } -EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_cleanup_early, I2C_OF_PROBER); +EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_cleanup_early, "I2C_OF_PROBER"); /** * i2c_of_probe_simple_cleanup - Clean up and release resources for I2C OF prober simple helpers @@ -405,11 +405,11 @@ void i2c_of_probe_simple_cleanup(struct device *dev, void *data) i2c_of_probe_simple_disable_regulator(dev, ctx); i2c_of_probe_simple_put_supply(ctx); } -EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_cleanup, I2C_OF_PROBER); +EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_cleanup, "I2C_OF_PROBER"); struct i2c_of_probe_ops i2c_of_probe_simple_ops = { .enable = i2c_of_probe_simple_enable, .cleanup_early = i2c_of_probe_simple_cleanup_early, .cleanup = i2c_of_probe_simple_cleanup, }; -EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_ops, I2C_OF_PROBER); +EXPORT_SYMBOL_NS_GPL(i2c_of_probe_simple_ops, "I2C_OF_PROBER"); diff --git a/drivers/i2c/i2c-slave-testunit.c b/drivers/i2c/i2c-slave-testunit.c index 0d6fbaa48248..6de4307050dd 100644 --- a/drivers/i2c/i2c-slave-testunit.c +++ b/drivers/i2c/i2c-slave-testunit.c @@ -38,6 +38,7 @@ enum testunit_regs { enum testunit_flags { TU_FLAG_IN_PROCESS, + TU_FLAG_NACK, }; struct testunit_data { @@ -90,8 +91,10 @@ static int i2c_slave_testunit_slave_cb(struct i2c_client *client, switch (event) { case I2C_SLAVE_WRITE_REQUESTED: - if (test_bit(TU_FLAG_IN_PROCESS, &tu->flags)) - return -EBUSY; + if (test_bit(TU_FLAG_IN_PROCESS | TU_FLAG_NACK, &tu->flags)) { + ret = -EBUSY; + break; + } memset(tu->regs, 0, TU_NUM_REGS); tu->reg_idx = 0; @@ -99,8 +102,10 @@ static int i2c_slave_testunit_slave_cb(struct i2c_client *client, break; case I2C_SLAVE_WRITE_RECEIVED: - if (test_bit(TU_FLAG_IN_PROCESS, &tu->flags)) - return -EBUSY; + if (test_bit(TU_FLAG_IN_PROCESS | TU_FLAG_NACK, &tu->flags)) { + ret = -EBUSY; + break; + } if (tu->reg_idx < TU_NUM_REGS) tu->regs[tu->reg_idx] = *val; @@ -129,6 +134,8 @@ static int i2c_slave_testunit_slave_cb(struct i2c_client *client, * here because we still need them in the workqueue! */ tu->reg_idx = 0; + + clear_bit(TU_FLAG_NACK, &tu->flags); break; case I2C_SLAVE_READ_PROCESSED: @@ -151,6 +158,10 @@ static int i2c_slave_testunit_slave_cb(struct i2c_client *client, break; } + /* If an error occurred somewhen, we NACK everything until next STOP */ + if (ret) + set_bit(TU_FLAG_NACK, &tu->flags); + return ret; } diff --git a/drivers/i2c/muxes/i2c-demux-pinctrl.c b/drivers/i2c/muxes/i2c-demux-pinctrl.c index dce18f763a09..77a740561fd7 100644 --- a/drivers/i2c/muxes/i2c-demux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-demux-pinctrl.c @@ -68,7 +68,7 @@ static int i2c_demux_activate_master(struct i2c_demux_pinctrl_priv *priv, u32 ne } /* - * Check if there are pinctrl states at all. Note: we cant' use + * Check if there are pinctrl states at all. Note: we can't use * devm_pinctrl_get_select() because we need to distinguish between * the -ENODEV from devm_pinctrl_get() and pinctrl_lookup_state(). */ @@ -261,7 +261,9 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev) pm_runtime_no_callbacks(&pdev->dev); /* switch to first parent as active master */ - i2c_demux_activate_master(priv, 0); + err = i2c_demux_activate_master(priv, 0); + if (err) + goto err_rollback; err = device_create_file(&pdev->dev, &dev_attr_available_masters); if (err) |