From: Pankaj Bansal <pankaj.bansal@nxp.com> To: Leo Li <leoyang.li@nxp.com> Cc: Alexandru Marginean <alexandru.marginean@nxp.com>, Pankaj Bansal <pankaj.bansal@nxp.com>, linuxppc-dev@lists.ozlabs.org, Wang Dongsheng <dongsheng.wang@freescale.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/2] fsl: add i2c controlled qixis driver Date: Fri, 5 Oct 2018 14:25:05 +0530 [thread overview] Message-ID: <20181005085505.29024-3-pankaj.bansal@nxp.com> (raw) In-Reply-To: <20181005085505.29024-1-pankaj.bansal@nxp.com> FPGA on LX2160AQDS/LX2160ARDB connected on I2C bus, so add qixis driver which is basically an i2c client driver to control FPGA. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com> --- drivers/soc/fsl/Kconfig | 9 ++++ drivers/soc/fsl/Makefile | 1 + drivers/soc/fsl/qixis_ctrl.c | 75 ++++++++++++++++++++++++++++++++ include/linux/fsl/qixis_ctrl.h | 20 +++++++++ 4 files changed, 105 insertions(+) diff --git a/drivers/soc/fsl/Kconfig b/drivers/soc/fsl/Kconfig index 8f80e8bbf29e..c355c2cbbd45 100644 --- a/drivers/soc/fsl/Kconfig +++ b/drivers/soc/fsl/Kconfig @@ -28,4 +28,13 @@ config FSL_MC_DPIO other DPAA2 objects. This driver does not expose the DPIO objects individually, but groups them under a service layer API. + +config FSL_QIXIS + tristate "QIXIS system controller driver" + select REGMAP_I2C + default n + help + Say y here to enable QIXIS system controller api. The qixis driver + provides FPGA functions to control system. + endmenu diff --git a/drivers/soc/fsl/Makefile b/drivers/soc/fsl/Makefile index 803ef1bfb5ff..47e0cfc66ca4 100644 --- a/drivers/soc/fsl/Makefile +++ b/drivers/soc/fsl/Makefile @@ -5,5 +5,6 @@ obj-$(CONFIG_FSL_DPAA) += qbman/ obj-$(CONFIG_QUICC_ENGINE) += qe/ obj-$(CONFIG_CPM) += qe/ +obj-$(CONFIG_FSL_QIXIS) += qixis_ctrl.o obj-$(CONFIG_FSL_GUTS) += guts.o obj-$(CONFIG_FSL_MC_DPIO) += dpio/ diff --git a/drivers/soc/fsl/qixis_ctrl.c b/drivers/soc/fsl/qixis_ctrl.c new file mode 100644 index 000000000000..b94649fb9726 --- /dev/null +++ b/drivers/soc/fsl/qixis_ctrl.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* Freescale QIXIS system controller driver. + * + * Copyright 2015 Freescale Semiconductor, Inc. + * Copyright 2018 NXP + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/fsl/qixis_ctrl.h> +#include <linux/io.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +static struct regmap *qixis_regmap; + +static struct regmap_config qixis_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int fsl_qixis_i2c_probe(struct i2c_client *client) +{ + struct platform_device *pdev; + struct device_node *child; + u32 qver; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EOPNOTSUPP; + + qixis_regmap = regmap_init_i2c(client, &qixis_regmap_config); + + /* create platform device for each of the child node of FPGA node */ + for_each_child_of_node(client->dev.of_node, child) { + pdev = of_platform_device_create(child, NULL, &client->dev); + }; + + regmap_read(qixis_regmap, offsetof(struct fsl_qixis_regs, qixis_ver), + &qver); + + pr_info("Freescale QIXIS Version: 0x%08x\n", qver); + + return 0; +} + +static int fsl_qixis_i2c_remove(struct i2c_client *client) +{ + return 0; +} + +static const struct of_device_id fsl_qixis_of_match[] = { + { .compatible = "fsl,fpga-qixis-i2c" }, + {} +}; +MODULE_DEVICE_TABLE(of, fsl_qixis_of_match); + +static struct i2c_driver fsl_qixis_i2c_driver = { + .driver = { + .name = "qixis_ctrl", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(fsl_qixis_of_match), + }, + .probe_new = fsl_qixis_i2c_probe, + .remove = fsl_qixis_i2c_remove, +}; +module_i2c_driver(fsl_qixis_i2c_driver); + +MODULE_AUTHOR("Wang Dongsheng <dongsheng.wang@freescale.com>"); +MODULE_DESCRIPTION("Freescale QIXIS system controller driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/fsl/qixis_ctrl.h b/include/linux/fsl/qixis_ctrl.h new file mode 100644 index 000000000000..00e80ef21adc --- /dev/null +++ b/include/linux/fsl/qixis_ctrl.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0+ + * + * Definitions for Freescale QIXIS system controller. + * + * Copyright 2015 Freescale Semiconductor, Inc. + * Copyright 2018 NXP + */ + +#ifndef _FSL_QIXIS_CTRL_H_ +#define _FSL_QIXIS_CTRL_H_ + +/* QIXIS MAP */ +struct fsl_qixis_regs { + u8 id; /* Identification Registers */ + u8 version; /* Version Register */ + u8 qixis_ver; /* QIXIS Version Register */ + u8 reserved1[0x1f]; +}; + +#endif -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: pankaj.bansal@nxp.com (Pankaj Bansal) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/2] fsl: add i2c controlled qixis driver Date: Fri, 5 Oct 2018 14:25:05 +0530 [thread overview] Message-ID: <20181005085505.29024-3-pankaj.bansal@nxp.com> (raw) In-Reply-To: <20181005085505.29024-1-pankaj.bansal@nxp.com> FPGA on LX2160AQDS/LX2160ARDB connected on I2C bus, so add qixis driver which is basically an i2c client driver to control FPGA. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Pankaj Bansal <pankaj.bansal@nxp.com> --- drivers/soc/fsl/Kconfig | 9 ++++ drivers/soc/fsl/Makefile | 1 + drivers/soc/fsl/qixis_ctrl.c | 75 ++++++++++++++++++++++++++++++++ include/linux/fsl/qixis_ctrl.h | 20 +++++++++ 4 files changed, 105 insertions(+) diff --git a/drivers/soc/fsl/Kconfig b/drivers/soc/fsl/Kconfig index 8f80e8bbf29e..c355c2cbbd45 100644 --- a/drivers/soc/fsl/Kconfig +++ b/drivers/soc/fsl/Kconfig @@ -28,4 +28,13 @@ config FSL_MC_DPIO other DPAA2 objects. This driver does not expose the DPIO objects individually, but groups them under a service layer API. + +config FSL_QIXIS + tristate "QIXIS system controller driver" + select REGMAP_I2C + default n + help + Say y here to enable QIXIS system controller api. The qixis driver + provides FPGA functions to control system. + endmenu diff --git a/drivers/soc/fsl/Makefile b/drivers/soc/fsl/Makefile index 803ef1bfb5ff..47e0cfc66ca4 100644 --- a/drivers/soc/fsl/Makefile +++ b/drivers/soc/fsl/Makefile @@ -5,5 +5,6 @@ obj-$(CONFIG_FSL_DPAA) += qbman/ obj-$(CONFIG_QUICC_ENGINE) += qe/ obj-$(CONFIG_CPM) += qe/ +obj-$(CONFIG_FSL_QIXIS) += qixis_ctrl.o obj-$(CONFIG_FSL_GUTS) += guts.o obj-$(CONFIG_FSL_MC_DPIO) += dpio/ diff --git a/drivers/soc/fsl/qixis_ctrl.c b/drivers/soc/fsl/qixis_ctrl.c new file mode 100644 index 000000000000..b94649fb9726 --- /dev/null +++ b/drivers/soc/fsl/qixis_ctrl.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/* Freescale QIXIS system controller driver. + * + * Copyright 2015 Freescale Semiconductor, Inc. + * Copyright 2018 NXP + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/fsl/qixis_ctrl.h> +#include <linux/io.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> + +static struct regmap *qixis_regmap; + +static struct regmap_config qixis_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int fsl_qixis_i2c_probe(struct i2c_client *client) +{ + struct platform_device *pdev; + struct device_node *child; + u32 qver; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EOPNOTSUPP; + + qixis_regmap = regmap_init_i2c(client, &qixis_regmap_config); + + /* create platform device for each of the child node of FPGA node */ + for_each_child_of_node(client->dev.of_node, child) { + pdev = of_platform_device_create(child, NULL, &client->dev); + }; + + regmap_read(qixis_regmap, offsetof(struct fsl_qixis_regs, qixis_ver), + &qver); + + pr_info("Freescale QIXIS Version: 0x%08x\n", qver); + + return 0; +} + +static int fsl_qixis_i2c_remove(struct i2c_client *client) +{ + return 0; +} + +static const struct of_device_id fsl_qixis_of_match[] = { + { .compatible = "fsl,fpga-qixis-i2c" }, + {} +}; +MODULE_DEVICE_TABLE(of, fsl_qixis_of_match); + +static struct i2c_driver fsl_qixis_i2c_driver = { + .driver = { + .name = "qixis_ctrl", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(fsl_qixis_of_match), + }, + .probe_new = fsl_qixis_i2c_probe, + .remove = fsl_qixis_i2c_remove, +}; +module_i2c_driver(fsl_qixis_i2c_driver); + +MODULE_AUTHOR("Wang Dongsheng <dongsheng.wang@freescale.com>"); +MODULE_DESCRIPTION("Freescale QIXIS system controller driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/fsl/qixis_ctrl.h b/include/linux/fsl/qixis_ctrl.h new file mode 100644 index 000000000000..00e80ef21adc --- /dev/null +++ b/include/linux/fsl/qixis_ctrl.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0+ + * + * Definitions for Freescale QIXIS system controller. + * + * Copyright 2015 Freescale Semiconductor, Inc. + * Copyright 2018 NXP + */ + +#ifndef _FSL_QIXIS_CTRL_H_ +#define _FSL_QIXIS_CTRL_H_ + +/* QIXIS MAP */ +struct fsl_qixis_regs { + u8 id; /* Identification Registers */ + u8 version; /* Version Register */ + u8 qixis_ver; /* QIXIS Version Register */ + u8 reserved1[0x1f]; +}; + +#endif -- 2.17.1
next prev parent reply other threads:[~2018-10-05 5:03 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-10-05 8:55 [PATCH 0/2] add i2c controlled qixis driver Pankaj Bansal 2018-10-05 8:55 ` Pankaj Bansal 2018-10-05 8:55 ` [PATCH 1/2] dt-bindings: soc: fsl: Document Qixis FPGA usage Pankaj Bansal 2018-10-05 8:55 ` Pankaj Bansal 2018-10-05 8:55 ` Pankaj Bansal [this message] 2018-10-05 8:55 ` [PATCH 2/2] fsl: add i2c controlled qixis driver Pankaj Bansal 2018-12-06 0:12 ` Li Yang 2018-12-06 0:12 ` Li Yang
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