diff options
48 files changed, 64 insertions, 77 deletions
diff --git a/Documentation/i2c/busses/i2c-piix4 b/Documentation/i2c/busses/i2c-piix4 index c097e0f020fe..aa959fd22450 100644 --- a/Documentation/i2c/busses/i2c-piix4 +++ b/Documentation/i2c/busses/i2c-piix4 @@ -13,7 +13,7 @@ Supported adapters: * AMD SP5100 (SB700 derivative found on some server mainboards) Datasheet: Publicly available at the AMD website http://support.amd.com/us/Embedded_TechDocs/44413.pdf - * AMD Hudson-2, CZ + * AMD Hudson-2, ML, CZ Datasheet: Not publicly available * Standard Microsystems (SMSC) SLC90E66 (Victory66) southbridge Datasheet: Publicly available at the SMSC website http://www.smsc.com diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c index b7a6acfcb300..65ef9664d5da 100644 --- a/drivers/i2c/algos/i2c-algo-bit.c +++ b/drivers/i2c/algos/i2c-algo-bit.c @@ -25,7 +25,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/delay.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/sched.h> #include <linux/i2c.h> diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index f892a424009b..8b10f88b13d9 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -24,7 +24,6 @@ #include <linux/moduleparam.h> #include <linux/delay.h> #include <linux/jiffies.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/i2c.h> #include <linux/i2c-algo-pca.h> diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c index 5c2379522aa9..34370090b753 100644 --- a/drivers/i2c/algos/i2c-algo-pcf.c +++ b/drivers/i2c/algos/i2c-algo-pcf.c @@ -30,7 +30,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/delay.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/i2c.h> #include <linux/i2c-algo-pcf.h> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 6bcdea5856af..f5ed03164d86 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -152,6 +152,7 @@ config I2C_PIIX4 ATI SB700/SP5100 ATI SB800 AMD Hudson-2 + AMD ML AMD CZ Serverworks OSB4 Serverworks CSB5 diff --git a/drivers/i2c/busses/i2c-acorn.c b/drivers/i2c/busses/i2c-acorn.c index ed9f48d566db..9d7be5af2bf2 100644 --- a/drivers/i2c/busses/i2c-acorn.c +++ b/drivers/i2c/busses/i2c-acorn.c @@ -12,7 +12,7 @@ * On Acorn machines, the following i2c devices are on the bus: * - PCF8583 real time clock & static RAM */ -#include <linux/init.h> +#include <linux/module.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c index 3f491815e2c4..7d60d3a1f621 100644 --- a/drivers/i2c/busses/i2c-ali1535.c +++ b/drivers/i2c/busses/i2c-ali1535.c @@ -58,7 +58,6 @@ #include <linux/delay.h> #include <linux/ioport.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/acpi.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c index 84ccd9496a5e..4611e4754a67 100644 --- a/drivers/i2c/busses/i2c-ali1563.c +++ b/drivers/i2c/busses/i2c-ali1563.c @@ -20,7 +20,6 @@ #include <linux/delay.h> #include <linux/i2c.h> #include <linux/pci.h> -#include <linux/init.h> #include <linux/acpi.h> #define ALI1563_MAX_TIMEOUT 500 diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c index 26bcc6127cee..4823206a4870 100644 --- a/drivers/i2c/busses/i2c-ali15x3.c +++ b/drivers/i2c/busses/i2c-ali15x3.c @@ -65,7 +65,6 @@ #include <linux/ioport.h> #include <linux/delay.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/acpi.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index e13e2aa2d05d..819d3c1062a7 100644 --- a/drivers/i2c/busses/i2c-amd756.c +++ b/drivers/i2c/busses/i2c-amd756.c @@ -41,7 +41,6 @@ #include <linux/stddef.h> #include <linux/ioport.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/acpi.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c index a44e6e77c5a1..f3d4d79855b5 100644 --- a/drivers/i2c/busses/i2c-amd8111.c +++ b/drivers/i2c/busses/i2c-amd8111.c @@ -13,7 +13,6 @@ #include <linux/kernel.h> #include <linux/stddef.h> #include <linux/ioport.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/delay.h> #include <linux/acpi.h> diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c index b5b89239d622..8762458ca7da 100644 --- a/drivers/i2c/busses/i2c-au1550.c +++ b/drivers/i2c/busses/i2c-au1550.c @@ -31,7 +31,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/i2c.h> #include <linux/slab.h> diff --git a/drivers/i2c/busses/i2c-cbus-gpio.c b/drivers/i2c/busses/i2c-cbus-gpio.c index ce7ffba2b020..bdf040fd8675 100644 --- a/drivers/i2c/busses/i2c-cbus-gpio.c +++ b/drivers/i2c/busses/i2c-cbus-gpio.c @@ -19,7 +19,6 @@ #include <linux/io.h> #include <linux/i2c.h> #include <linux/gpio.h> -#include <linux/init.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/errno.h> diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c index 3e5ea2c87a6e..be7f0a20d634 100644 --- a/drivers/i2c/busses/i2c-cpm.c +++ b/drivers/i2c/busses/i2c-cpm.c @@ -33,7 +33,6 @@ #include <linux/module.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/interrupt.h> #include <linux/errno.h> #include <linux/stddef.h> diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c index ff15ae90aaf5..e08e458bab02 100644 --- a/drivers/i2c/busses/i2c-eg20t.c +++ b/drivers/i2c/busses/i2c-eg20t.c @@ -18,7 +18,6 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/delay.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/i2c.h> #include <linux/fs.h> diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c index 044f85b01d06..9fd711c03dd2 100644 --- a/drivers/i2c/busses/i2c-exynos5.c +++ b/drivers/i2c/busses/i2c-exynos5.c @@ -12,7 +12,6 @@ #include <linux/module.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/time.h> #include <linux/interrupt.h> #include <linux/delay.h> diff --git a/drivers/i2c/busses/i2c-highlander.c b/drivers/i2c/busses/i2c-highlander.c index 436b0f254916..512fcfabc18e 100644 --- a/drivers/i2c/busses/i2c-highlander.c +++ b/drivers/i2c/busses/i2c-highlander.c @@ -12,7 +12,6 @@ * of this archive for more details. */ #include <linux/module.h> -#include <linux/init.h> #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/platform_device.h> diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c index 79c3d9069a48..e248257fe517 100644 --- a/drivers/i2c/busses/i2c-hydra.c +++ b/drivers/i2c/busses/i2c-hydra.c @@ -27,7 +27,6 @@ #include <linux/types.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> -#include <linux/init.h> #include <linux/io.h> #include <asm/hydra.h> diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c index f7444100f397..274312c96b12 100644 --- a/drivers/i2c/busses/i2c-ibm_iic.c +++ b/drivers/i2c/busses/i2c-ibm_iic.c @@ -36,7 +36,6 @@ #include <linux/ioport.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/interrupt.h> #include <asm/irq.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c index dd24aa0424a9..3d16c2f60a5e 100644 --- a/drivers/i2c/busses/i2c-iop3xx.c +++ b/drivers/i2c/busses/i2c-iop3xx.c @@ -34,7 +34,6 @@ #include <linux/module.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/platform_device.h> #include <linux/i2c.h> diff --git a/drivers/i2c/busses/i2c-isch.c b/drivers/i2c/busses/i2c-isch.c index af213045ab7e..cf99dbf21fd1 100644 --- a/drivers/i2c/busses/i2c-isch.c +++ b/drivers/i2c/busses/i2c-isch.c @@ -33,7 +33,6 @@ #include <linux/stddef.h> #include <linux/ioport.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/io.h> #include <linux/acpi.h> diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c index bb132ea7d2b4..8ce4f517fc56 100644 --- a/drivers/i2c/busses/i2c-ismt.c +++ b/drivers/i2c/busses/i2c-ismt.c @@ -62,7 +62,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/pci.h> #include <linux/kernel.h> #include <linux/stddef.h> diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index b6a741caf4f6..f5391633b53a 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -16,7 +16,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/sched.h> -#include <linux/init.h> #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_platform.h> diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index ac88f4000cc2..0038c451095c 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -51,7 +51,6 @@ #include <linux/kernel.h> #include <linux/stddef.h> #include <linux/ioport.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/delay.h> #include <linux/dmi.h> diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c index c61f37a10a07..80e06fa45720 100644 --- a/drivers/i2c/busses/i2c-ocores.c +++ b/drivers/i2c/busses/i2c-ocores.c @@ -15,7 +15,6 @@ #include <linux/err.h> #include <linux/kernel.h> #include <linux/module.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/platform_device.h> #include <linux/i2c.h> diff --git a/drivers/i2c/busses/i2c-octeon.c b/drivers/i2c/busses/i2c-octeon.c index b929ba271b47..81042b08a947 100644 --- a/drivers/i2c/busses/i2c-octeon.c +++ b/drivers/i2c/busses/i2c-octeon.c @@ -18,7 +18,6 @@ #include <linux/delay.h> #include <linux/sched.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/io.h> #include <linux/of.h> diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c index 39e2755e3f25..845f12598e79 100644 --- a/drivers/i2c/busses/i2c-pca-platform.c +++ b/drivers/i2c/busses/i2c-pca-platform.c @@ -12,7 +12,6 @@ */ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/init.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/jiffies.h> diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index a028617b8f13..39dd8ec60dfd 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -22,7 +22,7 @@ Intel PIIX4, 440MX Serverworks OSB4, CSB5, CSB6, HT-1000, HT-1100 ATI IXP200, IXP300, IXP400, SB600, SB700/SP5100, SB800 - AMD Hudson-2, CZ + AMD Hudson-2, ML, CZ SMSC Victory66 Note: we assume there can only be one device, with one or more @@ -38,7 +38,6 @@ #include <linux/ioport.h> #include <linux/i2c.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/dmi.h> #include <linux/acpi.h> #include <linux/io.h> @@ -208,16 +207,16 @@ static int piix4_setup(struct pci_dev *PIIX4_dev, "WARNING: SMBus interface has been FORCEFULLY ENABLED!\n"); } else { dev_err(&PIIX4_dev->dev, - "Host SMBus controller not enabled!\n"); + "SMBus Host Controller not enabled!\n"); release_region(piix4_smba, SMBIOSIZE); return -ENODEV; } } if (((temp & 0x0E) == 8) || ((temp & 0x0E) == 2)) - dev_dbg(&PIIX4_dev->dev, "Using Interrupt 9 for SMBus.\n"); + dev_dbg(&PIIX4_dev->dev, "Using IRQ for SMBus\n"); else if ((temp & 0x0E) == 0) - dev_dbg(&PIIX4_dev->dev, "Using Interrupt SMI# for SMBus.\n"); + dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus\n"); else dev_err(&PIIX4_dev->dev, "Illegal Interrupt configuration " "(or code out of date)!\n"); @@ -235,7 +234,8 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, { unsigned short piix4_smba; unsigned short smba_idx = 0xcd6; - u8 smba_en_lo, smba_en_hi, i2ccfg, i2ccfg_offset = 0x10, smb_en; + u8 smba_en_lo, smba_en_hi, smb_en, smb_en_status; + u8 i2ccfg, i2ccfg_offset = 0x10; /* SB800 and later SMBus does not support forcing address */ if (force || force_addr) { @@ -245,7 +245,15 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, } /* Determine the address of the SMBus areas */ - smb_en = (aux) ? 0x28 : 0x2c; + if ((PIIX4_dev->vendor == PCI_VENDOR_ID_AMD && + PIIX4_dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS && + PIIX4_dev->revision >= 0x41) || + (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD && + PIIX4_dev->device == 0x790b && + PIIX4_dev->revision >= 0x49)) + smb_en = 0x00; + else + smb_en = (aux) ? 0x28 : 0x2c; if (!request_region(smba_idx, 2, "smba_idx")) { dev_err(&PIIX4_dev->dev, "SMBus base address index region " @@ -258,13 +266,22 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, smba_en_hi = inb_p(smba_idx + 1); release_region(smba_idx, 2); - if ((smba_en_lo & 1) == 0) { + if (!smb_en) { + smb_en_status = smba_en_lo & 0x10; + piix4_smba = smba_en_hi << 8; + if (aux) + piix4_smba |= 0x20; + } else { + smb_en_status = smba_en_lo & 0x01; + piix4_smba = ((smba_en_hi << 8) | smba_en_lo) & 0xffe0; + } + + if (!smb_en_status) { dev_err(&PIIX4_dev->dev, - "Host SMBus controller not enabled!\n"); + "SMBus Host Controller not enabled!\n"); return -ENODEV; } - piix4_smba = ((smba_en_hi << 8) | smba_en_lo) & 0xffe0; if (acpi_check_region(piix4_smba, SMBIOSIZE, piix4_driver.name)) return -ENODEV; @@ -277,7 +294,8 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, /* Aux SMBus does not support IRQ information */ if (aux) { dev_info(&PIIX4_dev->dev, - "SMBus Host Controller at 0x%x\n", piix4_smba); + "Auxiliary SMBus Host Controller at 0x%x\n", + piix4_smba); return piix4_smba; } @@ -292,9 +310,9 @@ static int piix4_setup_sb800(struct pci_dev *PIIX4_dev, release_region(piix4_smba + i2ccfg_offset, 1); if (i2ccfg & 1) - dev_dbg(&PIIX4_dev->dev, "Using IRQ for SMBus.\n"); + dev_dbg(&PIIX4_dev->dev, "Using IRQ for SMBus\n"); else - dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus.\n"); + dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus\n"); dev_info(&PIIX4_dev->dev, "SMBus Host Controller at 0x%x, revision %d\n", diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c index f6389e2c9d02..8564768fee32 100644 --- a/drivers/i2c/busses/i2c-pmcmsp.c +++ b/drivers/i2c/busses/i2c-pmcmsp.c @@ -26,7 +26,6 @@ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/init.h> #include <linux/platform_device.h> #include <linux/i2c.h> #include <linux/interrupt.h> diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c index 8c87f4a9793b..01e967763c2a 100644 --- a/drivers/i2c/busses/i2c-powermac.c +++ b/drivers/i2c/busses/i2c-powermac.c @@ -24,7 +24,6 @@ #include <linux/kernel.h> #include <linux/types.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/of_irq.h> diff --git a/drivers/i2c/busses/i2c-puv3.c b/drivers/i2c/busses/i2c-puv3.c index ac80199885be..c83fc3ccdd2b 100644 --- a/drivers/i2c/busses/i2c-puv3.c +++ b/drivers/i2c/busses/i2c-puv3.c @@ -17,7 +17,6 @@ #include <linux/types.h> #include <linux/delay.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/clk.h> #include <linux/platform_device.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index 2c2fd7c2b116..0282d4d42805 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -26,7 +26,6 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/err.h> -#include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/i2c.h> @@ -111,6 +110,7 @@ struct rcar_i2c_priv { void __iomem *io; struct i2c_adapter adap; struct i2c_msg *msg; + struct clk *clk; spinlock_t lock; wait_queue_head_t wait; @@ -227,18 +227,12 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv, u32 bus_speed, struct device *dev) { - struct clk *clkp = clk_get(dev, NULL); u32 scgd, cdf; u32 round, ick; u32 scl; u32 cdf_width; unsigned long rate; - if (IS_ERR(clkp)) { - dev_err(dev, "couldn't get clock\n"); - return PTR_ERR(clkp); - } - switch (priv->devtype) { case I2C_RCAR_GEN1: cdf_width = 2; @@ -266,7 +260,7 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv, * clkp : peripheral_clk * F[] : integer up-valuation */ - rate = clk_get_rate(clkp); + rate = clk_get_rate(priv->clk); cdf = rate / 20000000; if (cdf >= 1 << cdf_width) { dev_err(dev, "Input clock %lu too high\n", rate); @@ -308,7 +302,7 @@ static int rcar_i2c_clock_calculate(struct rcar_i2c_priv *priv, scgd_find: dev_dbg(dev, "clk %d/%d(%lu), round %u, CDF:0x%x, SCGD: 0x%x\n", - scl, bus_speed, clk_get_rate(clkp), round, cdf, scgd); + scl, bus_speed, clk_get_rate(priv->clk), round, cdf, scgd); /* * keep icccr value @@ -604,7 +598,7 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap, * error handling */ if (rcar_i2c_flags_has(priv, ID_NACK)) { - ret = -EREMOTEIO; + ret = -ENXIO; break; } @@ -623,7 +617,7 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap, pm_runtime_put(dev); - if (ret < 0) + if (ret < 0 && ret != -ENXIO) dev_err(dev, "error %d : %x\n", ret, priv->flags); return ret; @@ -664,6 +658,12 @@ static int rcar_i2c_probe(struct platform_device *pdev) return -ENOMEM; } + priv->clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->clk)) { + dev_err(dev, "cannot get clock\n"); + return PTR_ERR(priv->clk); + } + bus_speed = 100000; /* default 100 kHz */ ret = of_property_read_u32(dev->of_node, "clock-frequency", &bus_speed); if (ret < 0 && pdata && pdata->bus_speed) diff --git a/drivers/i2c/busses/i2c-scmi.c b/drivers/i2c/busses/i2c-scmi.c index 599235514138..dfc98df7b1b6 100644 --- a/drivers/i2c/busses/i2c-scmi.c +++ b/drivers/i2c/busses/i2c-scmi.c @@ -12,7 +12,6 @@ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/stddef.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/acpi.h> diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c index 5e8f136e233f..d76f3d9737ec 100644 --- a/drivers/i2c/busses/i2c-sh7760.c +++ b/drivers/i2c/busses/i2c-sh7760.c @@ -11,7 +11,6 @@ #include <linux/delay.h> #include <linux/err.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/interrupt.h> #include <linux/ioport.h> #include <linux/platform_device.h> diff --git a/drivers/i2c/busses/i2c-simtec.c b/drivers/i2c/busses/i2c-simtec.c index 4fc87e7c94c9..294c80f21d65 100644 --- a/drivers/i2c/busses/i2c-simtec.c +++ b/drivers/i2c/busses/i2c-simtec.c @@ -20,7 +20,6 @@ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/init.h> #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/slab.h> diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index 36a9556d7cfa..19b8505d0cdd 100644 --- a/drivers/i2c/busses/i2c-sis630.c +++ b/drivers/i2c/busses/i2c-sis630.c @@ -45,7 +45,6 @@ #include <linux/delay.h> #include <linux/pci.h> #include <linux/ioport.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/acpi.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index b9faf9b6002b..f8aa0c29f02b 100644 --- a/drivers/i2c/busses/i2c-sis96x.c +++ b/drivers/i2c/busses/i2c-sis96x.c @@ -36,7 +36,6 @@ #include <linux/stddef.h> #include <linux/ioport.h> #include <linux/i2c.h> -#include <linux/init.h> #include <linux/acpi.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c index be662511c58b..49d7f14b9d27 100644 --- a/drivers/i2c/busses/i2c-via.c +++ b/drivers/i2c/busses/i2c-via.c @@ -22,7 +22,6 @@ #include <linux/module.h> #include <linux/pci.h> #include <linux/ioport.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> #include <linux/io.h> diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c index 6f9918f37b91..28107502517f 100644 --- a/drivers/i2c/busses/i2c-xiic.c +++ b/drivers/i2c/busses/i2c-xiic.c @@ -30,7 +30,6 @@ */ #include <linux/kernel.h> #include <linux/module.h> -#include <linux/init.h> #include <linux/errno.h> #include <linux/err.h> #include <linux/delay.h> diff --git a/drivers/i2c/busses/i2c-xlr.c b/drivers/i2c/busses/i2c-xlr.c index 7945b05d3ea0..17f7352eca6b 100644 --- a/drivers/i2c/busses/i2c-xlr.c +++ b/drivers/i2c/busses/i2c-xlr.c @@ -11,7 +11,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> -#include <linux/init.h> #include <linux/ioport.h> #include <linux/delay.h> #include <linux/errno.h> diff --git a/drivers/i2c/busses/scx200_i2c.c b/drivers/i2c/busses/scx200_i2c.c index ae1258b95d60..8eadf0f47ad7 100644 --- a/drivers/i2c/busses/scx200_i2c.c +++ b/drivers/i2c/busses/scx200_i2c.c @@ -26,7 +26,6 @@ #include <linux/module.h> #include <linux/errno.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> #include <linux/io.h> diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 82f7a5354dfe..5fb80b8962a2 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -261,10 +261,9 @@ static int i2c_device_probe(struct device *dev) acpi_dev_pm_attach(&client->dev, true); status = driver->probe(client, i2c_match_id(driver->id_table, client)); - if (status) { - i2c_set_clientdata(client, NULL); + if (status) acpi_dev_pm_detach(&client->dev, true); - } + return status; } @@ -272,7 +271,7 @@ static int i2c_device_remove(struct device *dev) { struct i2c_client *client = i2c_verify_client(dev); struct i2c_driver *driver; - int status; + int status = 0; if (!client || !dev->driver) return 0; @@ -281,12 +280,8 @@ static int i2c_device_remove(struct device *dev) if (driver->remove) { dev_dbg(dev, "remove\n"); status = driver->remove(client); - } else { - dev->driver = NULL; - status = 0; } - if (status == 0) - i2c_set_clientdata(client, NULL); + acpi_dev_pm_detach(&client->dev, true); return status; } diff --git a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c index c58e093b6032..69afffa8f427 100644 --- a/drivers/i2c/muxes/i2c-arb-gpio-challenge.c +++ b/drivers/i2c/muxes/i2c-arb-gpio-challenge.c @@ -19,7 +19,6 @@ #include <linux/kernel.h> #include <linux/i2c.h> #include <linux/i2c-mux.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/of_gpio.h> #include <linux/platform_device.h> diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c index 8a8c56f4b026..d8989c823f50 100644 --- a/drivers/i2c/muxes/i2c-mux-gpio.c +++ b/drivers/i2c/muxes/i2c-mux-gpio.c @@ -12,7 +12,6 @@ #include <linux/i2c-mux.h> #include <linux/i2c-mux-gpio.h> #include <linux/platform_device.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/gpio.h> diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c index c4f08ad31183..cb772775da43 100644 --- a/drivers/i2c/muxes/i2c-mux-pca9541.c +++ b/drivers/i2c/muxes/i2c-mux-pca9541.c @@ -17,7 +17,6 @@ */ #include <linux/module.h> -#include <linux/init.h> #include <linux/jiffies.h> #include <linux/delay.h> #include <linux/slab.h> diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c index 8720b6a11237..550bd36aa5d6 100644 --- a/drivers/i2c/muxes/i2c-mux-pca954x.c +++ b/drivers/i2c/muxes/i2c-mux-pca954x.c @@ -40,7 +40,6 @@ #include <linux/i2c.h> #include <linux/i2c-mux.h> #include <linux/i2c/pca954x.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/of_gpio.h> #include <linux/slab.h> diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c index d7978dc4ad0b..4ff0ef3e07a6 100644 --- a/drivers/i2c/muxes/i2c-mux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c @@ -18,7 +18,6 @@ #include <linux/i2c.h> #include <linux/i2c-mux.h> -#include <linux/init.h> #include <linux/module.h> #include <linux/pinctrl/consumer.h> #include <linux/i2c-mux-pinctrl.h> diff --git a/include/linux/i2c.h b/include/linux/i2c.h index d9c8dbd3373f..deddeb8c337c 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -342,11 +342,25 @@ i2c_register_board_info(int busnum, struct i2c_board_info const *info, } #endif /* I2C_BOARDINFO */ -/* +/** + * struct i2c_algorithm - represent I2C transfer method + * @master_xfer: Issue a set of i2c transactions to the given I2C adapter + * defined by the msgs array, with num messages available to transfer via + * the adapter specified by adap. + * @smbus_xfer: Issue smbus transactions to the given I2C adapter. If this + * is not present, then the bus layer will try and convert the SMBus calls + * into I2C transfers instead. + * @functionality: Return the flags that this algorithm/adapter pair supports + * from the I2C_FUNC_* flags. + * * The following structs are for those who like to implement new bus drivers: * i2c_algorithm is the interface to a class of hardware solutions which can * be addressed using the same bus algorithms - i.e. bit-banging or the PCF8584 * to name two of the most common. + * + * The return codes from the @master_xfer field should indicate the type of + * error code that occured during the transfer, as documented in the kernel + * Documentation file Documentation/i2c/fault-codes. */ struct i2c_algorithm { /* If an adapter algorithm can't do I2C-level access, set master_xfer |