From 885e42d9c267d23d6001275e819e2448bf59ea8c Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 14 Aug 2017 10:23:24 +0200 Subject: i2c: mux: pca9541: sort include files Make it consistent with the other drivers. Signed-off-by: Wolfram Sang Signed-off-by: Peter Rosin --- drivers/i2c/muxes/i2c-mux-pca9541.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'drivers/i2c/muxes') diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c index 9e318c9516c7..be961f2855c7 100644 --- a/drivers/i2c/muxes/i2c-mux-pca9541.c +++ b/drivers/i2c/muxes/i2c-mux-pca9541.c @@ -16,15 +16,14 @@ * warranty of any kind, whether express or implied. */ -#include -#include #include -#include #include #include #include - #include +#include +#include +#include /* * The PCA9541 is a bus master selector. It supports two I2C masters connected -- cgit v1.2.3 From 2be03aedbb6d78929c9e3be0d1850830303744f7 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 14 Aug 2017 10:23:25 +0200 Subject: i2c: mux: pca954x: move header file out of I2C realm include/linux/i2c is not for client devices. Move the header file to a more appropriate location. Signed-off-by: Wolfram Sang Signed-off-by: Peter Rosin --- drivers/i2c/muxes/i2c-mux-pca9541.c | 2 +- drivers/i2c/muxes/i2c-mux-pca954x.c | 2 +- include/linux/i2c/pca954x.h | 48 ----------------------------------- include/linux/platform_data/pca954x.h | 48 +++++++++++++++++++++++++++++++++++ 4 files changed, 50 insertions(+), 50 deletions(-) delete mode 100644 include/linux/i2c/pca954x.h create mode 100644 include/linux/platform_data/pca954x.h (limited to 'drivers/i2c/muxes') diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c index be961f2855c7..6a39adaf433f 100644 --- a/drivers/i2c/muxes/i2c-mux-pca9541.c +++ b/drivers/i2c/muxes/i2c-mux-pca9541.c @@ -20,9 +20,9 @@ #include #include #include -#include #include #include +#include #include /* diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c index f1751c290af6..7b992db38021 100644 --- a/drivers/i2c/muxes/i2c-mux-pca954x.c +++ b/drivers/i2c/muxes/i2c-mux-pca954x.c @@ -39,13 +39,13 @@ #include #include #include -#include #include #include #include #include #include #include +#include #include #include #include diff --git a/include/linux/i2c/pca954x.h b/include/linux/i2c/pca954x.h deleted file mode 100644 index 1712677d5904..000000000000 --- a/include/linux/i2c/pca954x.h +++ /dev/null @@ -1,48 +0,0 @@ -/* - * - * pca954x.h - I2C multiplexer/switch support - * - * Copyright (c) 2008-2009 Rodolfo Giometti - * Copyright (c) 2008-2009 Eurotech S.p.A. - * Michael Lawnick - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - - -#ifndef _LINUX_I2C_PCA954X_H -#define _LINUX_I2C_PCA954X_H - -/* Platform data for the PCA954x I2C multiplexers */ - -/* Per channel initialisation data: - * @adap_id: bus number for the adapter. 0 = don't care - * @deselect_on_exit: set this entry to 1, if your H/W needs deselection - * of this channel after transaction. - * - */ -struct pca954x_platform_mode { - int adap_id; - unsigned int deselect_on_exit:1; - unsigned int class; -}; - -/* Per mux/switch data, used with i2c_register_board_info */ -struct pca954x_platform_data { - struct pca954x_platform_mode *modes; - int num_modes; -}; - -#endif /* _LINUX_I2C_PCA954X_H */ diff --git a/include/linux/platform_data/pca954x.h b/include/linux/platform_data/pca954x.h new file mode 100644 index 000000000000..1712677d5904 --- /dev/null +++ b/include/linux/platform_data/pca954x.h @@ -0,0 +1,48 @@ +/* + * + * pca954x.h - I2C multiplexer/switch support + * + * Copyright (c) 2008-2009 Rodolfo Giometti + * Copyright (c) 2008-2009 Eurotech S.p.A. + * Michael Lawnick + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + + +#ifndef _LINUX_I2C_PCA954X_H +#define _LINUX_I2C_PCA954X_H + +/* Platform data for the PCA954x I2C multiplexers */ + +/* Per channel initialisation data: + * @adap_id: bus number for the adapter. 0 = don't care + * @deselect_on_exit: set this entry to 1, if your H/W needs deselection + * of this channel after transaction. + * + */ +struct pca954x_platform_mode { + int adap_id; + unsigned int deselect_on_exit:1; + unsigned int class; +}; + +/* Per mux/switch data, used with i2c_register_board_info */ +struct pca954x_platform_data { + struct pca954x_platform_mode *modes; + int num_modes; +}; + +#endif /* _LINUX_I2C_PCA954X_H */ -- cgit v1.2.3 From 26b1083b4545ec08a7dcfe759323a2e142d60d75 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 14 Aug 2017 10:23:26 +0200 Subject: i2c: mux: mlxcpld: move header file out of I2C realm include/linux/i2c is not for client devices. Move the header file to a more appropriate location. Signed-off-by: Wolfram Sang Signed-off-by: Peter Rosin --- drivers/i2c/muxes/i2c-mux-mlxcpld.c | 2 +- include/linux/i2c/mlxcpld.h | 52 ------------------------------- include/linux/platform_data/x86/mlxcpld.h | 52 +++++++++++++++++++++++++++++++ 3 files changed, 53 insertions(+), 53 deletions(-) delete mode 100644 include/linux/i2c/mlxcpld.h create mode 100644 include/linux/platform_data/x86/mlxcpld.h (limited to 'drivers/i2c/muxes') diff --git a/drivers/i2c/muxes/i2c-mux-mlxcpld.c b/drivers/i2c/muxes/i2c-mux-mlxcpld.c index e53f2abd1350..12ad8d65faf6 100644 --- a/drivers/i2c/muxes/i2c-mux-mlxcpld.c +++ b/drivers/i2c/muxes/i2c-mux-mlxcpld.c @@ -38,9 +38,9 @@ #include #include #include +#include #include #include -#include #define CPLD_MUX_MAX_NCHANS 8 diff --git a/include/linux/i2c/mlxcpld.h b/include/linux/i2c/mlxcpld.h deleted file mode 100644 index b08dcb183fca..000000000000 --- a/include/linux/i2c/mlxcpld.h +++ /dev/null @@ -1,52 +0,0 @@ -/* - * mlxcpld.h - Mellanox I2C multiplexer support in CPLD - * - * Copyright (c) 2016 Mellanox Technologies. All rights reserved. - * Copyright (c) 2016 Michael Shych - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the names of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef _LINUX_I2C_MLXCPLD_H -#define _LINUX_I2C_MLXCPLD_H - -/* Platform data for the CPLD I2C multiplexers */ - -/* mlxcpld_mux_plat_data - per mux data, used with i2c_register_board_info - * @adap_ids - adapter array - * @num_adaps - number of adapters - * @sel_reg_addr - mux select register offset in CPLD space - */ -struct mlxcpld_mux_plat_data { - int *adap_ids; - int num_adaps; - int sel_reg_addr; -}; - -#endif /* _LINUX_I2C_MLXCPLD_H */ diff --git a/include/linux/platform_data/x86/mlxcpld.h b/include/linux/platform_data/x86/mlxcpld.h new file mode 100644 index 000000000000..b08dcb183fca --- /dev/null +++ b/include/linux/platform_data/x86/mlxcpld.h @@ -0,0 +1,52 @@ +/* + * mlxcpld.h - Mellanox I2C multiplexer support in CPLD + * + * Copyright (c) 2016 Mellanox Technologies. All rights reserved. + * Copyright (c) 2016 Michael Shych + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _LINUX_I2C_MLXCPLD_H +#define _LINUX_I2C_MLXCPLD_H + +/* Platform data for the CPLD I2C multiplexers */ + +/* mlxcpld_mux_plat_data - per mux data, used with i2c_register_board_info + * @adap_ids - adapter array + * @num_adaps - number of adapters + * @sel_reg_addr - mux select register offset in CPLD space + */ +struct mlxcpld_mux_plat_data { + int *adap_ids; + int num_adaps; + int sel_reg_addr; +}; + +#endif /* _LINUX_I2C_MLXCPLD_H */ -- cgit v1.2.3 From c4aee3e1b0de8e732fafd0d13e75ab7bdbc606ef Mon Sep 17 00:00:00 2001 From: Peter Rosin Date: Sun, 21 May 2017 18:48:07 +0200 Subject: i2c: mux: pinctrl: remove platform_data No platform (at least no upstreamed platform) has ever used this platform_data. Just drop it and simplify the code. Reviewed-by: Stephen Warren Acked-by: Wolfram Sang Signed-off-by: Peter Rosin --- drivers/i2c/muxes/Kconfig | 1 + drivers/i2c/muxes/i2c-mux-pinctrl.c | 219 ++++++++++++------------------------ include/linux/i2c-mux-pinctrl.h | 41 ------- 3 files changed, 72 insertions(+), 189 deletions(-) delete mode 100644 include/linux/i2c-mux-pinctrl.h (limited to 'drivers/i2c/muxes') diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig index 2c64d0e0740f..1bba95ecc7c0 100644 --- a/drivers/i2c/muxes/Kconfig +++ b/drivers/i2c/muxes/Kconfig @@ -76,6 +76,7 @@ config I2C_MUX_PCA954x config I2C_MUX_PINCTRL tristate "pinctrl-based I2C multiplexer" depends on PINCTRL + depends on OF || COMPILE_TEST help If you say yes to this option, support will be included for an I2C multiplexer that uses the pinctrl subsystem, i.e. pin multiplexing. diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c index 7c0c264b07bc..aa4a3bf9507f 100644 --- a/drivers/i2c/muxes/i2c-mux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c @@ -20,14 +20,12 @@ #include #include #include -#include #include #include #include #include "../../pinctrl/core.h" struct i2c_mux_pinctrl { - struct i2c_mux_pinctrl_platform_data *pdata; struct pinctrl *pinctrl; struct pinctrl_state **states; struct pinctrl_state *state_idle; @@ -47,80 +45,6 @@ static int i2c_mux_pinctrl_deselect(struct i2c_mux_core *muxc, u32 chan) return pinctrl_select_state(mux->pinctrl, mux->state_idle); } -#ifdef CONFIG_OF -static int i2c_mux_pinctrl_parse_dt(struct i2c_mux_pinctrl *mux, - struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - int num_names, i, ret; - struct device_node *adapter_np; - struct i2c_adapter *adapter; - - if (!np) - return 0; - - mux->pdata = devm_kzalloc(&pdev->dev, sizeof(*mux->pdata), GFP_KERNEL); - if (!mux->pdata) - return -ENOMEM; - - num_names = of_property_count_strings(np, "pinctrl-names"); - if (num_names < 0) { - dev_err(&pdev->dev, "Cannot parse pinctrl-names: %d\n", - num_names); - return num_names; - } - - mux->pdata->pinctrl_states = devm_kzalloc(&pdev->dev, - sizeof(*mux->pdata->pinctrl_states) * num_names, - GFP_KERNEL); - if (!mux->pdata->pinctrl_states) - return -ENOMEM; - - for (i = 0; i < num_names; i++) { - ret = of_property_read_string_index(np, "pinctrl-names", i, - &mux->pdata->pinctrl_states[mux->pdata->bus_count]); - if (ret < 0) { - dev_err(&pdev->dev, "Cannot parse pinctrl-names: %d\n", - ret); - return ret; - } - if (!strcmp(mux->pdata->pinctrl_states[mux->pdata->bus_count], - "idle")) { - if (i != num_names - 1) { - dev_err(&pdev->dev, - "idle state must be last\n"); - return -EINVAL; - } - mux->pdata->pinctrl_state_idle = "idle"; - } else { - mux->pdata->bus_count++; - } - } - - adapter_np = of_parse_phandle(np, "i2c-parent", 0); - if (!adapter_np) { - dev_err(&pdev->dev, "Cannot parse i2c-parent\n"); - return -ENODEV; - } - adapter = of_find_i2c_adapter_by_node(adapter_np); - of_node_put(adapter_np); - if (!adapter) { - dev_err(&pdev->dev, "Cannot find parent bus\n"); - return -EPROBE_DEFER; - } - mux->pdata->parent_bus_num = i2c_adapter_id(adapter); - put_device(&adapter->dev); - - return 0; -} -#else -static inline int i2c_mux_pinctrl_parse_dt(struct i2c_mux_pinctrl *mux, - struct platform_device *pdev) -{ - return 0; -} -#endif - static struct i2c_adapter *i2c_mux_pinctrl_root_adapter( struct pinctrl_state *state) { @@ -141,110 +65,109 @@ static struct i2c_adapter *i2c_mux_pinctrl_root_adapter( return root; } +static struct i2c_adapter *i2c_mux_pinctrl_parent_adapter(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct device_node *parent_np; + struct i2c_adapter *parent; + + parent_np = of_parse_phandle(np, "i2c-parent", 0); + if (!parent_np) { + dev_err(dev, "Cannot parse i2c-parent\n"); + return ERR_PTR(-ENODEV); + } + parent = of_find_i2c_adapter_by_node(parent_np); + of_node_put(parent_np); + if (!parent) + return ERR_PTR(-EPROBE_DEFER); + + return parent; +} + static int i2c_mux_pinctrl_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; struct i2c_mux_core *muxc; struct i2c_mux_pinctrl *mux; + struct i2c_adapter *parent; struct i2c_adapter *root; - int i, ret; - - mux = devm_kzalloc(&pdev->dev, sizeof(*mux), GFP_KERNEL); - if (!mux) { - ret = -ENOMEM; - goto err; - } + int num_names, i, ret; + const char *name; - mux->pdata = dev_get_platdata(&pdev->dev); - if (!mux->pdata) { - ret = i2c_mux_pinctrl_parse_dt(mux, pdev); - if (ret < 0) - goto err; - } - if (!mux->pdata) { - dev_err(&pdev->dev, "Missing platform data\n"); - ret = -ENODEV; - goto err; + num_names = of_property_count_strings(np, "pinctrl-names"); + if (num_names < 0) { + dev_err(dev, "Cannot parse pinctrl-names: %d\n", + num_names); + return num_names; } - mux->states = devm_kzalloc(&pdev->dev, - sizeof(*mux->states) * mux->pdata->bus_count, - GFP_KERNEL); - if (!mux->states) { - dev_err(&pdev->dev, "Cannot allocate states\n"); - ret = -ENOMEM; - goto err; - } + parent = i2c_mux_pinctrl_parent_adapter(dev); + if (IS_ERR(parent)) + return PTR_ERR(parent); - muxc = i2c_mux_alloc(NULL, &pdev->dev, mux->pdata->bus_count, 0, 0, - i2c_mux_pinctrl_select, NULL); + muxc = i2c_mux_alloc(parent, dev, num_names, + sizeof(*mux) + num_names * sizeof(*mux->states), + 0, i2c_mux_pinctrl_select, NULL); if (!muxc) { ret = -ENOMEM; - goto err; + goto err_put_parent; } - muxc->priv = mux; + mux = i2c_mux_priv(muxc); + mux->states = (struct pinctrl_state **)(mux + 1); platform_set_drvdata(pdev, muxc); - mux->pinctrl = devm_pinctrl_get(&pdev->dev); + mux->pinctrl = devm_pinctrl_get(dev); if (IS_ERR(mux->pinctrl)) { ret = PTR_ERR(mux->pinctrl); - dev_err(&pdev->dev, "Cannot get pinctrl: %d\n", ret); - goto err; + dev_err(dev, "Cannot get pinctrl: %d\n", ret); + goto err_put_parent; } - for (i = 0; i < mux->pdata->bus_count; i++) { - mux->states[i] = pinctrl_lookup_state(mux->pinctrl, - mux->pdata->pinctrl_states[i]); + + for (i = 0; i < num_names; i++) { + ret = of_property_read_string_index(np, "pinctrl-names", i, + &name); + if (ret < 0) { + dev_err(dev, "Cannot parse pinctrl-names: %d\n", ret); + goto err_put_parent; + } + + mux->states[i] = pinctrl_lookup_state(mux->pinctrl, name); if (IS_ERR(mux->states[i])) { ret = PTR_ERR(mux->states[i]); - dev_err(&pdev->dev, - "Cannot look up pinctrl state %s: %d\n", - mux->pdata->pinctrl_states[i], ret); - goto err; - } - } - if (mux->pdata->pinctrl_state_idle) { - mux->state_idle = pinctrl_lookup_state(mux->pinctrl, - mux->pdata->pinctrl_state_idle); - if (IS_ERR(mux->state_idle)) { - ret = PTR_ERR(mux->state_idle); - dev_err(&pdev->dev, - "Cannot look up pinctrl state %s: %d\n", - mux->pdata->pinctrl_state_idle, ret); - goto err; + dev_err(dev, "Cannot look up pinctrl state %s: %d\n", + name, ret); + goto err_put_parent; } - muxc->deselect = i2c_mux_pinctrl_deselect; - } + if (strcmp(name, "idle")) + continue; - muxc->parent = i2c_get_adapter(mux->pdata->parent_bus_num); - if (!muxc->parent) { - dev_err(&pdev->dev, "Parent adapter (%d) not found\n", - mux->pdata->parent_bus_num); - ret = -EPROBE_DEFER; - goto err; + if (i != num_names - 1) { + dev_err(dev, "idle state must be last\n"); + ret = -EINVAL; + goto err_put_parent; + } + mux->state_idle = mux->states[i]; + muxc->deselect = i2c_mux_pinctrl_deselect; } root = i2c_root_adapter(&muxc->parent->dev); muxc->mux_locked = true; - for (i = 0; i < mux->pdata->bus_count; i++) { + for (i = 0; i < num_names; i++) { if (root != i2c_mux_pinctrl_root_adapter(mux->states[i])) { muxc->mux_locked = false; break; } } - if (muxc->mux_locked && mux->pdata->pinctrl_state_idle && - root != i2c_mux_pinctrl_root_adapter(mux->state_idle)) - muxc->mux_locked = false; - if (muxc->mux_locked) - dev_info(&pdev->dev, "mux-locked i2c mux\n"); + dev_info(dev, "mux-locked i2c mux\n"); - for (i = 0; i < mux->pdata->bus_count; i++) { - u32 bus = mux->pdata->base_bus_num ? - (mux->pdata->base_bus_num + i) : 0; - - ret = i2c_mux_add_adapter(muxc, bus, i, 0); + /* Do not add any adapter for the idle state (if it's there at all). */ + for (i = 0; i < num_names - !!mux->state_idle; i++) { + ret = i2c_mux_add_adapter(muxc, 0, i, 0); if (ret) goto err_del_adapter; } @@ -253,8 +176,9 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev) err_del_adapter: i2c_mux_del_adapters(muxc); +err_put_parent: i2c_put_adapter(muxc->parent); -err: + return ret; } @@ -264,16 +188,15 @@ static int i2c_mux_pinctrl_remove(struct platform_device *pdev) i2c_mux_del_adapters(muxc); i2c_put_adapter(muxc->parent); + return 0; } -#ifdef CONFIG_OF static const struct of_device_id i2c_mux_pinctrl_of_match[] = { { .compatible = "i2c-mux-pinctrl", }, {}, }; MODULE_DEVICE_TABLE(of, i2c_mux_pinctrl_of_match); -#endif static struct platform_driver i2c_mux_pinctrl_driver = { .driver = { diff --git a/include/linux/i2c-mux-pinctrl.h b/include/linux/i2c-mux-pinctrl.h deleted file mode 100644 index a65c86429e84..000000000000 --- a/include/linux/i2c-mux-pinctrl.h +++ /dev/null @@ -1,41 +0,0 @@ -/* - * i2c-mux-pinctrl platform data - * - * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -#ifndef _LINUX_I2C_MUX_PINCTRL_H -#define _LINUX_I2C_MUX_PINCTRL_H - -/** - * struct i2c_mux_pinctrl_platform_data - Platform data for i2c-mux-pinctrl - * @parent_bus_num: Parent I2C bus number - * @base_bus_num: Base I2C bus number for the child busses. 0 for dynamic. - * @bus_count: Number of child busses. Also the number of elements in - * @pinctrl_states - * @pinctrl_states: The names of the pinctrl state to select for each child bus - * @pinctrl_state_idle: The pinctrl state to select when no child bus is being - * accessed. If NULL, the most recently used pinctrl state will be left - * selected. - */ -struct i2c_mux_pinctrl_platform_data { - int parent_bus_num; - int base_bus_num; - int bus_count; - const char **pinctrl_states; - const char *pinctrl_state_idle; -}; - -#endif -- cgit v1.2.3 From fc2046718a1bdccc38d749c4453215891f7a014c Mon Sep 17 00:00:00 2001 From: Peter Rosin Date: Sun, 21 May 2017 18:49:03 +0200 Subject: i2c: mux: pinctrl: drop the idle_state member The information is available elsewhere. Reviewed-by: Stephen Warren Signed-off-by: Peter Rosin --- drivers/i2c/muxes/i2c-mux-pinctrl.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'drivers/i2c/muxes') diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c index aa4a3bf9507f..20b90a7a1e61 100644 --- a/drivers/i2c/muxes/i2c-mux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c @@ -28,7 +28,6 @@ struct i2c_mux_pinctrl { struct pinctrl *pinctrl; struct pinctrl_state **states; - struct pinctrl_state *state_idle; }; static int i2c_mux_pinctrl_select(struct i2c_mux_core *muxc, u32 chan) @@ -40,9 +39,7 @@ static int i2c_mux_pinctrl_select(struct i2c_mux_core *muxc, u32 chan) static int i2c_mux_pinctrl_deselect(struct i2c_mux_core *muxc, u32 chan) { - struct i2c_mux_pinctrl *mux = i2c_mux_priv(muxc); - - return pinctrl_select_state(mux->pinctrl, mux->state_idle); + return i2c_mux_pinctrl_select(muxc, muxc->num_adapters); } static struct i2c_adapter *i2c_mux_pinctrl_root_adapter( @@ -149,7 +146,6 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev) ret = -EINVAL; goto err_put_parent; } - mux->state_idle = mux->states[i]; muxc->deselect = i2c_mux_pinctrl_deselect; } @@ -166,7 +162,7 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev) dev_info(dev, "mux-locked i2c mux\n"); /* Do not add any adapter for the idle state (if it's there at all). */ - for (i = 0; i < num_names - !!mux->state_idle; i++) { + for (i = 0; i < num_names - !!muxc->deselect; i++) { ret = i2c_mux_add_adapter(muxc, 0, i, 0); if (ret) goto err_del_adapter; -- cgit v1.2.3 From be9bac020cacd0cdf758b4a6d847a0ba835475b9 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 17 Aug 2017 14:53:55 +0300 Subject: i2c: mux: pinctrl: potential NULL dereference on error If i2c_mux_alloc() fails then we'd have a NULL dereference here. Fixes: c4aee3e1b0de ("i2c: mux: pinctrl: remove platform_data") Signed-off-by: Dan Carpenter Signed-off-by: Peter Rosin --- drivers/i2c/muxes/i2c-mux-pinctrl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/i2c/muxes') diff --git a/drivers/i2c/muxes/i2c-mux-pinctrl.c b/drivers/i2c/muxes/i2c-mux-pinctrl.c index 20b90a7a1e61..cc6818aabab5 100644 --- a/drivers/i2c/muxes/i2c-mux-pinctrl.c +++ b/drivers/i2c/muxes/i2c-mux-pinctrl.c @@ -173,7 +173,7 @@ static int i2c_mux_pinctrl_probe(struct platform_device *pdev) err_del_adapter: i2c_mux_del_adapters(muxc); err_put_parent: - i2c_put_adapter(muxc->parent); + i2c_put_adapter(parent); return ret; } -- cgit v1.2.3 From fabf08a0cd63ce39287646ceea10ac34781418f4 Mon Sep 17 00:00:00 2001 From: Peter Rosin Date: Tue, 1 Aug 2017 15:16:21 +0200 Subject: i2c: mux: i2c-arb-gpio-challenge: allow compiling w/o OF support It simplifies some tests. Signed-off-by: Peter Rosin --- drivers/i2c/muxes/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/i2c/muxes') diff --git a/drivers/i2c/muxes/Kconfig b/drivers/i2c/muxes/Kconfig index 1bba95ecc7c0..55a10946abb6 100644 --- a/drivers/i2c/muxes/Kconfig +++ b/drivers/i2c/muxes/Kconfig @@ -8,7 +8,7 @@ menu "Multiplexer I2C Chip support" config I2C_ARB_GPIO_CHALLENGE tristate "GPIO-based I2C arbitration" depends on GPIOLIB || COMPILE_TEST - depends on OF + depends on OF || COMPILE_TEST help If you say yes to this option, support will be included for an I2C multimaster arbitration scheme using GPIOs and a challenge & -- cgit v1.2.3