diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/301-arch-0011-drivers-soc-fsl-add-qixis-driver.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/301-arch-0011-drivers-soc-fsl-add-qixis-driver.patch | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/301-arch-0011-drivers-soc-fsl-add-qixis-driver.patch b/target/linux/layerscape/patches-5.4/301-arch-0011-drivers-soc-fsl-add-qixis-driver.patch new file mode 100644 index 0000000000..bd82274be2 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/301-arch-0011-drivers-soc-fsl-add-qixis-driver.patch @@ -0,0 +1,152 @@ +From 68e332146b6f0a1d2a4514810986a7cf3c3117e3 Mon Sep 17 00:00:00 2001 +From: Pankaj Bansal <pankaj.bansal@nxp.com> +Date: Thu, 28 Feb 2019 17:22:28 +0530 +Subject: [PATCH] drivers: soc: fsl: add qixis driver + +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: Pankaj Bansal <pankaj.bansal@nxp.com> +--- + drivers/soc/fsl/Kconfig | 11 +++++ + drivers/soc/fsl/Makefile | 1 + + drivers/soc/fsl/qixis_ctrl.c | 105 +++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 117 insertions(+) + create mode 100644 drivers/soc/fsl/qixis_ctrl.c + +--- a/drivers/soc/fsl/Kconfig ++++ b/drivers/soc/fsl/Kconfig +@@ -40,4 +40,15 @@ config DPAA2_CONSOLE + /dev/dpaa2_mc_console and /dev/dpaa2_aiop_console, + which can be used to dump the Management Complex and AIOP + firmware logs. ++ ++config FSL_QIXIS ++ tristate "QIXIS system controller driver" ++ depends on OF ++ select REGMAP_I2C ++ select REGMAP_MMIO ++ default n ++ help ++ Say y here to enable QIXIS system controller api. The qixis driver ++ provides FPGA functions to control system. ++ + endmenu +--- a/drivers/soc/fsl/Makefile ++++ b/drivers/soc/fsl/Makefile +@@ -6,6 +6,7 @@ + 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/ + obj-$(CONFIG_DPAA2_CONSOLE) += dpaa2-console.o +--- /dev/null ++++ b/drivers/soc/fsl/qixis_ctrl.c +@@ -0,0 +1,105 @@ ++// SPDX-License-Identifier: GPL-2.0+ ++ ++/* Freescale QIXIS system controller driver. ++ * ++ * Copyright 2015 Freescale Semiconductor, Inc. ++ * Copyright 2018-2019 NXP ++ */ ++ ++#include <linux/err.h> ++#include <linux/i2c.h> ++#include <linux/module.h> ++#include <linux/mfd/core.h> ++#include <linux/of.h> ++#include <linux/regmap.h> ++ ++/* QIXIS MAP */ ++struct fsl_qixis_regs { ++ u8 id; /* Identification Registers */ ++ u8 version; /* Version Register */ ++ u8 qixis_ver; /* QIXIS Version Register */ ++ u8 reserved1[0x1f]; ++}; ++ ++struct qixis_priv { ++ struct regmap *regmap; ++}; ++ ++static struct regmap_config qixis_regmap_config = { ++ .reg_bits = 8, ++ .val_bits = 8, ++}; ++ ++static const struct mfd_cell fsl_qixis_devs[] = { ++ { ++ .name = "reg-mux", ++ .of_compatible = "reg-mux", ++ }, ++}; ++ ++static int fsl_qixis_i2c_probe(struct i2c_client *client) ++{ ++ struct qixis_priv *priv; ++ int ret = 0; ++ u32 qver; ++ ++ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) ++ return -EOPNOTSUPP; ++ ++ priv = devm_kzalloc(&client->dev, sizeof(struct qixis_priv), ++ GFP_KERNEL); ++ if (!priv) ++ return -ENOMEM; ++ ++ priv->regmap = regmap_init_i2c(client, &qixis_regmap_config); ++ regmap_read(priv->regmap, offsetof(struct fsl_qixis_regs, qixis_ver), ++ &qver); ++ pr_info("Freescale QIXIS Version: 0x%08x\n", qver); ++ ++ i2c_set_clientdata(client, priv); ++ ++ if (of_device_is_compatible(client->dev.of_node, "simple-mfd")) ++ ret = devm_mfd_add_devices(&client->dev, -1, fsl_qixis_devs, ++ ARRAY_SIZE(fsl_qixis_devs), NULL, 0, ++ NULL); ++ if (ret) ++ goto error; ++ ++ return ret; ++error: ++ regmap_exit(priv->regmap); ++ ++ return ret; ++} ++ ++static int fsl_qixis_i2c_remove(struct i2c_client *client) ++{ ++ struct qixis_priv *priv; ++ ++ priv = i2c_get_clientdata(client); ++ regmap_exit(priv->regmap); ++ ++ return 0; ++} ++ ++static const struct of_device_id fsl_qixis_i2c_of_match[] = { ++ { .compatible = "fsl,fpga-qixis-i2c" }, ++ {} ++}; ++MODULE_DEVICE_TABLE(of, fsl_qixis_i2c_of_match); ++ ++static struct i2c_driver fsl_qixis_i2c_driver = { ++ .driver = { ++ .name = "qixis_ctrl_i2c", ++ .owner = THIS_MODULE, ++ .of_match_table = of_match_ptr(fsl_qixis_i2c_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"); ++ |