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author | Wolfram Sang <wsa@kernel.org> | 2021-01-28 12:03:25 +0300 |
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committer | Wolfram Sang <wsa@kernel.org> | 2021-01-28 12:03:25 +0300 |
commit | 2e7f3db5d886701c2a31219530845f642fe700d9 (patch) | |
tree | cc14a072dec431cdb69597f76282e6375420e71f /drivers/i2c | |
parent | 73cc584cfced260133cfc635f9921d66da676749 (diff) | |
parent | 6ee1d745b7c9fd573fba142a2efdad76a9f1cb04 (diff) | |
download | linux-2e7f3db5d886701c2a31219530845f642fe700d9.tar.xz |
Merge tag 'v5.11-rc5' into i2c/for-5.12
Linux 5.11-rc5
Diffstat (limited to 'drivers/i2c')
-rw-r--r-- | drivers/i2c/busses/Kconfig | 1 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-imx.c | 20 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-mt65xx.c | 27 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-octeon-core.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-sprd.c | 8 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-tegra-bpmp.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-tegra.c | 24 |
8 files changed, 74 insertions, 12 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 2a89d0b061ee..abf85326113c 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -996,6 +996,7 @@ config I2C_SIMTEC config I2C_SPRD tristate "Spreadtrum I2C interface" depends on I2C=y && (ARCH_SPRD || COMPILE_TEST) + depends on COMMON_CLK help If you say yes to this option, support will be included for the Spreadtrum I2C interface. diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 1400a8716388..207332faefd8 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -1449,7 +1449,7 @@ static int i801_add_mux(struct i801_priv *priv) /* Register GPIO descriptor lookup table */ lookup = devm_kzalloc(dev, - struct_size(lookup, table, mux_config->n_gpios), + struct_size(lookup, table, mux_config->n_gpios + 1), GFP_KERNEL); if (!lookup) return -ENOMEM; diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index 149e2898cd2f..ca47e4041ca5 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -241,6 +241,19 @@ static struct imx_i2c_hwdata vf610_i2c_hwdata = { }; +static const struct platform_device_id imx_i2c_devtype[] = { + { + .name = "imx1-i2c", + .driver_data = (kernel_ulong_t)&imx1_i2c_hwdata, + }, { + .name = "imx21-i2c", + .driver_data = (kernel_ulong_t)&imx21_i2c_hwdata, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, imx_i2c_devtype); + static const struct of_device_id i2c_imx_dt_ids[] = { { .compatible = "fsl,imx1-i2c", .data = &imx1_i2c_hwdata, }, { .compatible = "fsl,imx21-i2c", .data = &imx21_i2c_hwdata, }, @@ -1330,7 +1343,11 @@ static int i2c_imx_probe(struct platform_device *pdev) return -ENOMEM; match = device_get_match_data(&pdev->dev); - i2c_imx->hwdata = match; + if (match) + i2c_imx->hwdata = match; + else + i2c_imx->hwdata = (struct imx_i2c_hwdata *) + platform_get_device_id(pdev)->driver_data; /* Setup i2c_imx driver structure */ strlcpy(i2c_imx->adapter.name, pdev->name, sizeof(i2c_imx->adapter.name)); @@ -1498,6 +1515,7 @@ static struct platform_driver i2c_imx_driver = { .of_match_table = i2c_imx_dt_ids, .acpi_match_table = i2c_imx_acpi_ids, }, + .id_table = imx_i2c_devtype, }; static int __init i2c_adap_imx_init(void) diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 33de99b7bc20..0818d3e50734 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -38,6 +38,7 @@ #define I2C_IO_CONFIG_OPEN_DRAIN 0x0003 #define I2C_IO_CONFIG_PUSH_PULL 0x0000 #define I2C_SOFT_RST 0x0001 +#define I2C_HANDSHAKE_RST 0x0020 #define I2C_FIFO_ADDR_CLR 0x0001 #define I2C_DELAY_LEN 0x0002 #define I2C_TIME_CLR_VALUE 0x0000 @@ -45,6 +46,7 @@ #define I2C_WRRD_TRANAC_VALUE 0x0002 #define I2C_RD_TRANAC_VALUE 0x0001 #define I2C_SCL_MIS_COMP_VALUE 0x0000 +#define I2C_CHN_CLR_FLAG 0x0000 #define I2C_DMA_CON_TX 0x0000 #define I2C_DMA_CON_RX 0x0001 @@ -54,7 +56,9 @@ #define I2C_DMA_START_EN 0x0001 #define I2C_DMA_INT_FLAG_NONE 0x0000 #define I2C_DMA_CLR_FLAG 0x0000 +#define I2C_DMA_WARM_RST 0x0001 #define I2C_DMA_HARD_RST 0x0002 +#define I2C_DMA_HANDSHAKE_RST 0x0004 #define MAX_SAMPLE_CNT_DIV 8 #define MAX_STEP_CNT_DIV 64 @@ -475,11 +479,24 @@ static void mtk_i2c_init_hw(struct mtk_i2c *i2c) { u16 control_reg; - writel(I2C_DMA_HARD_RST, i2c->pdmabase + OFFSET_RST); - udelay(50); - writel(I2C_DMA_CLR_FLAG, i2c->pdmabase + OFFSET_RST); - - mtk_i2c_writew(i2c, I2C_SOFT_RST, OFFSET_SOFTRESET); + if (i2c->dev_comp->dma_sync) { + writel(I2C_DMA_WARM_RST, i2c->pdmabase + OFFSET_RST); + udelay(10); + writel(I2C_DMA_CLR_FLAG, i2c->pdmabase + OFFSET_RST); + udelay(10); + writel(I2C_DMA_HANDSHAKE_RST | I2C_DMA_HARD_RST, + i2c->pdmabase + OFFSET_RST); + mtk_i2c_writew(i2c, I2C_HANDSHAKE_RST | I2C_SOFT_RST, + OFFSET_SOFTRESET); + udelay(10); + writel(I2C_DMA_CLR_FLAG, i2c->pdmabase + OFFSET_RST); + mtk_i2c_writew(i2c, I2C_CHN_CLR_FLAG, OFFSET_SOFTRESET); + } else { + writel(I2C_DMA_HARD_RST, i2c->pdmabase + OFFSET_RST); + udelay(50); + writel(I2C_DMA_CLR_FLAG, i2c->pdmabase + OFFSET_RST); + mtk_i2c_writew(i2c, I2C_SOFT_RST, OFFSET_SOFTRESET); + } /* Set ioconfig */ if (i2c->use_push_pull) diff --git a/drivers/i2c/busses/i2c-octeon-core.c b/drivers/i2c/busses/i2c-octeon-core.c index d9607905dc2f..845eda70b8ca 100644 --- a/drivers/i2c/busses/i2c-octeon-core.c +++ b/drivers/i2c/busses/i2c-octeon-core.c @@ -347,7 +347,7 @@ static int octeon_i2c_read(struct octeon_i2c *i2c, int target, if (result) return result; if (recv_len && i == 0) { - if (data[i] > I2C_SMBUS_BLOCK_MAX + 1) + if (data[i] > I2C_SMBUS_BLOCK_MAX) return -EPROTO; length += data[i]; } diff --git a/drivers/i2c/busses/i2c-sprd.c b/drivers/i2c/busses/i2c-sprd.c index 19cda6742423..2917fecf6c80 100644 --- a/drivers/i2c/busses/i2c-sprd.c +++ b/drivers/i2c/busses/i2c-sprd.c @@ -72,6 +72,8 @@ /* timeout (ms) for pm runtime autosuspend */ #define SPRD_I2C_PM_TIMEOUT 1000 +/* timeout (ms) for transfer message */ +#define I2C_XFER_TIMEOUT 1000 /* SPRD i2c data structure */ struct sprd_i2c { @@ -244,6 +246,7 @@ static int sprd_i2c_handle_msg(struct i2c_adapter *i2c_adap, struct i2c_msg *msg, bool is_last_msg) { struct sprd_i2c *i2c_dev = i2c_adap->algo_data; + unsigned long time_left; i2c_dev->msg = msg; i2c_dev->buf = msg->buf; @@ -273,7 +276,10 @@ static int sprd_i2c_handle_msg(struct i2c_adapter *i2c_adap, sprd_i2c_opt_start(i2c_dev); - wait_for_completion(&i2c_dev->complete); + time_left = wait_for_completion_timeout(&i2c_dev->complete, + msecs_to_jiffies(I2C_XFER_TIMEOUT)); + if (!time_left) + return -ETIMEDOUT; return i2c_dev->err; } diff --git a/drivers/i2c/busses/i2c-tegra-bpmp.c b/drivers/i2c/busses/i2c-tegra-bpmp.c index ec7a7e917edd..c0c7d01473f2 100644 --- a/drivers/i2c/busses/i2c-tegra-bpmp.c +++ b/drivers/i2c/busses/i2c-tegra-bpmp.c @@ -80,7 +80,7 @@ static int tegra_bpmp_xlate_flags(u16 flags, u16 *out) flags &= ~I2C_M_RECV_LEN; } - return (flags != 0) ? -EINVAL : 0; + return 0; } /** diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 6f08c0c3238d..8b113ae32dc7 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -326,6 +326,8 @@ static void i2c_writel(struct tegra_i2c_dev *i2c_dev, u32 val, unsigned int 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)); + else if (i2c_dev->is_vi) + readl_relaxed(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, I2C_INT_STATUS)); } static u32 i2c_readl(struct tegra_i2c_dev *i2c_dev, unsigned int reg) @@ -339,6 +341,21 @@ static void i2c_writesl(struct tegra_i2c_dev *i2c_dev, void *data, writesl(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg), data, len); } +static void i2c_writesl_vi(struct tegra_i2c_dev *i2c_dev, void *data, + unsigned int reg, unsigned int len) +{ + u32 *data32 = data; + + /* + * VI I2C controller has known hardware bug where writes get stuck + * when immediate multiple writes happen to TX_FIFO register. + * Recommended software work around is to read I2C register after + * each write to TX_FIFO register to flush out the data. + */ + while (len--) + i2c_writel(i2c_dev, *data32++, reg); +} + static void i2c_readsl(struct tegra_i2c_dev *i2c_dev, void *data, unsigned int reg, unsigned int len) { @@ -533,7 +550,7 @@ static int tegra_i2c_poll_register(struct tegra_i2c_dev *i2c_dev, void __iomem *addr = i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg); u32 val; - if (!i2c_dev->atomic_mode) + if (!i2c_dev->atomic_mode && !in_irq()) return readl_relaxed_poll_timeout(addr, val, !(val & mask), delay_us, timeout_us); @@ -811,7 +828,10 @@ static int tegra_i2c_fill_tx_fifo(struct tegra_i2c_dev *i2c_dev) i2c_dev->msg_buf_remaining = buf_remaining; i2c_dev->msg_buf = buf + words_to_transfer * BYTES_PER_FIFO_WORD; - i2c_writesl(i2c_dev, buf, I2C_TX_FIFO, words_to_transfer); + if (i2c_dev->is_vi) + i2c_writesl_vi(i2c_dev, buf, I2C_TX_FIFO, words_to_transfer); + else + i2c_writesl(i2c_dev, buf, I2C_TX_FIFO, words_to_transfer); buf += words_to_transfer * BYTES_PER_FIFO_WORD; } |