From: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
The CBC intergrates CB and SAM on single FPGA. This is a PCI MFD driver
and provides support for the following functions as subdrivers:
* SAM I2C accelerator
* SAM MTD flash
* CBC spare GPIOs
* CBC JNX infrastructure
Signed-off-by: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
Signed-off-by: Guenter Roeck <groeck@xxxxxxxxxxx>
Signed-off-by: Rajat Jain <rajatjain@xxxxxxxxxxx>
[Ported from Juniper kernel]
Signed-off-by: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
---
drivers/mfd/Kconfig | 16 +
drivers/mfd/Makefile | 1 +
drivers/mfd/cbc-core.c | 971 +++++++++++++++++++++++++++++++++++++++++++
include/linux/mfd/cbc-core.h | 181 ++++++++
4 files changed, 1169 insertions(+)
create mode 100644 drivers/mfd/cbc-core.c
create mode 100644 include/linux/mfd/cbc-core.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 7e1fa14..6107f7a 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1384,6 +1384,22 @@ config MFD_JUNIPER_EXT_CPLD
called "ptxpmb-ext-cpld"
+config MFD_JUNIPER_CBC
+ tristate "Juniper PTX1K CBC FPGA"
+ depends on JNX_PTX1K_RCB
+ default y if JNX_PTX1K_RCB
+ select MFD_CORE
+ select MTD
+ select MTD_SAM_FLASH
+ select I2C_SAM
+ select GPIO_CBC_PRESENCE if JNX_CONNECTOR
+ help
+ Select this to enable the CBC FPGA multi-function kernel driver.
+ This FPGA is present on the PTX1K RCB Juniper platform.
+
+ This driver can be built as a module. If built as a module it will be
+ called "cbc-core"
+
config MFD_TWL4030_AUDIO
bool "TI TWL4030 Audio"
depends on TWL4030_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index da94482..0ea6dc6 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -151,6 +151,7 @@ obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
obj-$(CONFIG_MFD_JUNIPER_CPLD) += ptxpmb-cpld-core.o
obj-$(CONFIG_MFD_JUNIPER_SAM) += sam-core.o
obj-$(CONFIG_MFD_JUNIPER_EXT_CPLD) += ptxpmb-ext-cpld-core.o
+obj-$(CONFIG_MFD_JUNIPER_CBC) += cbc-core.o
obj-$(CONFIG_MFD_DB8500_PRCMU) += db8500-prcmu.o
# ab8500-core need to come after db8500-prcmu (which provides the channel)
obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
diff --git a/drivers/mfd/cbc-core.c b/drivers/mfd/cbc-core.c
new file mode 100644
index 0000000..1e6c95b
--- /dev/null
+++ b/drivers/mfd/cbc-core.c
@@ -0,0 +1,971 @@
+/*
+ * drivers/mfd/cbc-core.c
+ *
+ * Copyright (c) 2014, Juniper Networks
+ * Author: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
+ * Based on: sam-core.c
+ *
+ * The CBC FPGA intergrates the PTX1K CB and some functions of
+ * the SAM FPGA on single device. We're reusing the SAM I2C,
+ * MTD flash drivers. The JNX CB logic is implemented in
+ * drivers/jnx/jnx-cbc-ptx1k.c and drivers/jnx/jnx-cbd-fpga-ptx1k.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/of.h>
+#include <linux/irqdomain.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/sam.h>
+#include <linux/jnx/pci_ids.h>
+#include <linux/debugfs.h>
+#include <linux/mfd/cbc-core.h>
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/string.h>
+#include <linux/ctype.h>
+#endif
+
+enum {
+ CBC_CELL_SAM_I2C, /* SAM I2C accelerator */
+ CBC_CELL_SAM_MTD, /* SAM EPCS64 config flash */
+ CBC_CELL_GPIO, /* CBC spare GPIO */
+ CBC_CELL_JNX_CBD, /* CBC CB JNX driver */
+ CBC_CELL_GPIO_PRS, /* CBC presence as GPIO (CH_PRS) */
+ CBC_CELL_GPIO_PRS_OTHER,/* CBC presence ss GPIO (OTHER_CH_PRS) */
+ CBC_CELL_GPIO_PRS_SIB, /* CBC presence as GPIO (CH_PRS_SIB) */
+ CBC_NUM_MFD_CELLS
+};
+
+#define CBC_IRQ_NR 31
+#define CBC_RES_NR 2 /* iomem, irq */
+#define CBC_RES_NR_NOIRQ 1 /* iomem */
+
+struct cbc_fpga_data {
+ void __iomem *membase;
+ struct pci_dev *pdev;
+ u32 fpga_rev; /* CBC revision */
+ u32 fpga_date; /* CBC revision date */
+ int i2c_mstr_count; /* CBC/I2C SAM master count */
+ struct irq_domain *irq_domain;
+ u32 int_src; /* interrupt src reg (MSI, legacy) */
+ u32 int_en; /* interrupt en reg (MSI, legacy) */
+ spinlock_t irq_lock;
+ struct mfd_cell mfd_cells[CBC_NUM_MFD_CELLS];
+ struct resource mfd_i2c_resources[CBC_RES_NR];
+ struct resource mfd_mtd_resources[CBC_RES_NR_NOIRQ];
+ struct resource mfd_gpio_resources[CBC_RES_NR_NOIRQ];
+ struct resource mfd_jnx_resources[CBC_RES_NR_NOIRQ];
+ struct resource mfd_gpio_prs_resources[CBC_RES_NR_NOIRQ];
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *cbc_debugfs_dir;
+ u32 debug_address; /* any register offsset */
+ struct debugfs_regset32 *regset; /* all regs */
+ u32 test_int_cnt; /* TEST_INT counter */
+ u32 i2c_accel_cnt; /* INT_I2C_ACCEL cnt */
+ u32 i2c_accel_empty_cnt; /* INT_I2C_ACCEL cnt && !CBC_STATUS_IRQ_EN */
+#endif
+};
+
+/* debugfs */
+/* TODO: split into a separate file */
+#ifdef CONFIG_DEBUG_FS
+
+#define dump_register(n) \
+{ \
+ .name = __stringify(n), \
+ .offset = n, \
+}
+
+static const struct debugfs_reg32 cbc_regs[] = {
+ dump_register(CBC_TOP_REGS_INT_SRC),
+ dump_register(CBC_TOP_REGS_INT_EN),
+ dump_register(CBC_TOP_REGS_I2C_SEL),
+ dump_register(CBC_TOP_REGS_CH_PRS),
+ dump_register(CBC_TOP_REGS_RTL_REVISION),
+ dump_register(CBC_TOP_REGS_PWR_STATUS),
+ dump_register(CBC_TOP_REGS_I2CS_INT),
+ dump_register(CBC_TOP_REGS_I2CS_INT_EN),
+ dump_register(CBC_TOP_REGS_MSTR_CONFIG),
+ dump_register(CBC_TOP_REGS_MSTR_ALIVE),
+ dump_register(CBC_TOP_REGS_MSTR_ALIVE_CNT),
+ dump_register(CBC_TOP_REGS_FPGA_REV),
+ dump_register(CBC_TOP_REGS_FPGA_DATE),
+ dump_register(CBC_TOP_REGS_DEVICE_CTRL),
+ dump_register(CBC_TOP_REGS_SLOT_ID),
+ dump_register(CBC_TOP_REGS_SCRATCH),
+ dump_register(CBC_TOP_REGS_RE_HALT),
+ dump_register(CBC_TOP_REGS_OTHER_CH_PRS_CHANGE),
+ dump_register(CBC_TOP_REGS_FPC_SPARE_A),
+ dump_register(CBC_TOP_REGS_FT_SPARE),
+ dump_register(CBC_TOP_REGS_CB_SPARE),
+ dump_register(CBC_TOP_REGS_MTTR_0),
+ dump_register(CBC_TOP_REGS_MTTR_1),
+ dump_register(CBC_TOP_REGS_MTTR_2),
+ dump_register(CBC_TOP_REGS_MSTR_FRC),
+ dump_register(CBC_TOP_REGS_MSTR_RSN),
+ dump_register(CBC_TOP_REGS_ME_WRITE_0),
+ dump_register(CBC_TOP_REGS_ME_WRITE_1),
+ dump_register(CBC_TOP_REGS_ME_WRITE_2),
+ dump_register(CBC_TOP_REGS_ME_WRITE_3),
+ dump_register(CBC_TOP_REGS_ME_WRITE_4),
+ dump_register(CBC_TOP_REGS_ME_WRITE_5),
+ dump_register(CBC_TOP_REGS_ME_READ_0),
+ dump_register(CBC_TOP_REGS_ME_READ_1),
+ dump_register(CBC_TOP_REGS_ME_READ_2),
+ dump_register(CBC_TOP_REGS_ME_READ_3),
+ dump_register(CBC_TOP_REGS_ME_READ_4),
+ dump_register(CBC_TOP_REGS_ME_READ_5),
+ dump_register(CBC_TOP_REGS_ME_STATUS),
+ dump_register(CBC_TOP_REGS_LIU_CONFIG),
+ dump_register(CBC_TOP_REGS_CBC_8112_8614_RST),
+ dump_register(CBC_TOP_REGS_CCG_CONFIG),
+ dump_register(CBC_TOP_REGS_SFPP_CONTROL),
+ dump_register(CBC_TOP_REGS_SFPP_PCIE_FT_STATUS),
+ dump_register(CBC_TOP_REGS_GPIO_CTRL),
+ dump_register(CBC_TOP_REGS_GPIO_OUTPUT_DATA),
+ dump_register(CBC_TOP_REGS_GPIO_INPUT_DATA),
+ dump_register(CBC_TOP_REGS_CCG_STATUS_RT),
+ dump_register(CBC_TOP_REGS_CCG_STATUS_LATCHED),
+ dump_register(CBC_TOP_REGS_CCG_STATUS_INTERRUPT_ENABLE),
+ dump_register(CBC_TOP_REGS_OTHER_LED),
+ dump_register(CBC_TOP_REGS_SFPP_I2C_RW_CONTROL),
+ dump_register(CBC_TOP_REGS_SFPP_I2C_REG_ADDRESS),
+ dump_register(CBC_TOP_REGS_SFPP_I2C_WDATA),
+ dump_register(CBC_TOP_REGS_SFPP_I2C_RDATA),
+ dump_register(CBC_TOP_REGS_SFPP_I2C_STATUS),
+ dump_register(CBC_TOP_REGS_SFPP_I2C_DEV_ADDRESS),
+ dump_register(CBC_TOP_REGS_SIB_SPARE_OUTPUTENABLE),
+ dump_register(CBC_TOP_REGS_SIB_SPARE_OUTPUT),
+ dump_register(CBC_TOP_REGS_SIB_SPARE_INPUT),
+ dump_register(CBC_TOP_REGS_FPC_SPARE_OUTPUTENABLE),
+ dump_register(CBC_TOP_REGS_FPC_SPARE_OUTPUT),
+ dump_register(CBC_TOP_REGS_FPC_SPARE_INPUT),
+ dump_register(CBC_TOP_REGS_OTHER_SPARE_OUTPUTENABLE),
+ dump_register(CBC_TOP_REGS_OTHER_SPARE_OUTPUT),
+ dump_register(CBC_TOP_REGS_OTHER_SPARE_INPUT),
+ dump_register(CBC_TOP_REGS_MSI_INT_SRC),
+ dump_register(CBC_TOP_REGS_MSI_INT_EN),
+ dump_register(CBC_TOP_REGS_TOD_LOCK),
+ dump_register(CBC_TOP_REGS_TOD_TIME_79_48),
+ dump_register(CBC_TOP_REGS_TOD_TIME_47_16),
+ dump_register(CBC_TOP_REGS_TOD_TIME_15_0),
+ dump_register(CBC_TOP_REGS_TOD_CLKACC_CRC),
+ dump_register(CBC_TOP_REGS_APS_COMMAND_REGISTER),
+ dump_register(CBC_TOP_REGS_APS_STATUS_REGISTER),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA0),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA1),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA2),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA3),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA4),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA5),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA6),
+ dump_register(CBC_TOP_REGS_APS_FRAME_DATA7),
+ dump_register(CBC_TOP_REGS_APS_APS_REV_REG),
+ dump_register(CBC_TOP_REGS_APS_APS_DEBUG0),
+ dump_register(CBC_TOP_REGS_APS_COUNTER_GOOD_FRAMES),
+ dump_register(CBC_TOP_REGS_APS_COUNTER_BAD_FRAMES),
+ dump_register(CBC_TOP_REGS_APS_APS_LINK_STATUS),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG0),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG1),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG2),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG3),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG4),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG5),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG6),
+ dump_register(CBC_TOP_REGS_APS_INTERRUPT_LOG7),
+ dump_register(CBC_INFO_I2C_MASTER_COUNT),
+ dump_register(CBC_INFO_FAST_I2C_CONFIG_A),
+ dump_register(CBC_INFO_FAST_I2C_CONFIG_B),
+ dump_register(CBC_INFO_FEATURES),
+ dump_register(CBC_INFO_PMA_CONTROL),
+ dump_register(CBC_INFO_PMA_STATUS),
+ dump_register(CBC_STATUS_IRQ_EN),
+ dump_register(CBC_STATUS_IRQ_ST),
+ dump_register(CBC_REMOTE_UPGRADE_CONTROL),
+ dump_register(CBC_REMOTE_UPGRADE_STATUS),
+ dump_register(CBC_FLASH_IF_ADDRESS),
+ dump_register(CBC_FLASH_IF_BYTE_COUNT),
+ dump_register(CBC_FLASH_IF_CONTROL),
+ dump_register(CBC_FLASH_IF_STATUS),
+ dump_register(CBC_FLASH_IF_WRITE_DATA),
+ dump_register(CBC_FLASH_IF_READ_DATA),
+};
+
+/*
+ * Usage:
+ * #echo ADDR > <debugfs>/cbc-core/register-address
+ * #cat <debugfs>/cbc-core/register-value
+ *
+ */
+static int cbc_debugfs_addr_print(struct seq_file *s, void *p)
+{
+ struct cbc_fpga_data *cbc = (struct cbc_fpga_data *)s->private;
+
+ seq_printf(s, "0x%08X\n", cbc->debug_address);
+
+ return 0;
+}
+
+static int cbc_debugfs_addr_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, cbc_debugfs_addr_print, inode->i_private);
+}
+
+static ssize_t cbc_debugfs_addr_write(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ struct cbc_fpga_data *cbc =
+ ((struct seq_file *)(file->private_data))->private;
+ unsigned long user_address;
+ int err;
+
+ err = kstrtoul_from_user(user_buf, count, 0, &user_address);
+ if (err)
+ return err;
+
+ if (user_address > 0xffffff) {
+ dev_err(&cbc->pdev->dev, "debugfs error input > 0xffffff\n");
+ return -EINVAL;
+ }
+ cbc->debug_address = user_address;
+
+ return count;
+}
+
+static const struct file_operations cbc_debugfs_addr_fops = {
+ .open = cbc_debugfs_addr_open,
+ .write = cbc_debugfs_addr_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int cbc_debugfs_val_print(struct seq_file *s, void *p)
+{
+ struct cbc_fpga_data *cbc = (struct cbc_fpga_data *)s->private;
+
+ seq_printf(s, "0x%08X\n", ioread32(cbc->membase + cbc->debug_address));
+
+ return 0;
+}
+
+static int cbc_debugfs_val_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, cbc_debugfs_val_print, inode->i_private);
+}
+
+static ssize_t cbc_debugfs_val_write(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ struct cbc_fpga_data *cbc =
+ ((struct seq_file *)(file->private_data))->private;
+ unsigned long user_val;
+ int err;
+
+ err = kstrtoul_from_user(user_buf, count, 0, &user_val);
+ if (err)
+ return err;
+
+ iowrite32(user_val, cbc->membase + cbc->debug_address);
+ ioread32(cbc->membase + cbc->debug_address);
+
+ return count;
+}
+
+static const struct file_operations cbc_debugfs_val_fops = {
+ .open = cbc_debugfs_val_open,
+ .write = cbc_debugfs_val_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+/*
+ * Usage:
+ * #echo 1 > <debugfs>/cbc-core/test-int
+ * #cat <debugfs>/cbc-core/test-int
+ *
+ */
+static void cbc_fire_test_int(struct cbc_fpga_data *cbc)
+{
+ u32 int_en;
+
+ /* Disable and enable the TEST_INT bit */
+ int_en = ioread32(cbc->membase + cbc->int_en);
+ iowrite32(int_en & ~BIT(INT_TEST), cbc->membase + cbc->int_en);
+ ioread32(cbc->membase + cbc->int_en);
+ iowrite32(int_en | BIT(INT_TEST), cbc->membase + cbc->int_en);
+ ioread32(cbc->membase + cbc->int_en);
+}
+
+static int cbc_debugfs_test_int_print(struct seq_file *s, void *p)
+{
+ struct cbc_fpga_data *cbc = (struct cbc_fpga_data *)s->private;
+
+ seq_printf(s, "0x%08X\n", cbc->test_int_cnt);
+ return 0;
+}
+
+static int cbc_debugfs_test_int_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, cbc_debugfs_test_int_print, inode->i_private);
+}
+
+/* write address triggers a page read */
+static ssize_t cbc_debugfs_test_int_write(struct file *file,
+ const char __user *user_buf, size_t count, loff_t *ppos)
+{
+ struct cbc_fpga_data *cbc =
+ ((struct seq_file *)(file->private_data))->private;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul_from_user(user_buf, count, 0, &val);
+ if (err)
+ return err;
+
+ if (val)
+ cbc_fire_test_int(cbc);
+
+ return count;
+}
+
+static const struct file_operations cbc_debugfs_test_int_fops = {
+ .open = cbc_debugfs_test_int_open,
+ .write = cbc_debugfs_test_int_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+
+static int cbc_debugfs_i2c_accel_int_print(struct seq_file *s, void *p)
+{
+ struct cbc_fpga_data *cbc = (struct cbc_fpga_data *)s->private;
+
+ seq_printf(s, "%d:%d\n", cbc->i2c_accel_cnt,
+ cbc->i2c_accel_empty_cnt);
+
+ return 0;
+}
+
+static int cbc_debugfs_i2c_accel_int_open(struct inode *inode,
+ struct file *file)
+{
+ return single_open(file, cbc_debugfs_i2c_accel_int_print,
+ inode->i_private);
+}
+
+static const struct file_operations cbc_debugfs_i2c_accel_int_fops = {
+ .open = cbc_debugfs_i2c_accel_int_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int cbc_debugfs_init(struct cbc_fpga_data *cbc)
+{
+ struct dentry *file;
+ struct device *dev = &cbc->pdev->dev;
+
+ cbc->cbc_debugfs_dir = debugfs_create_dir("cbc-core", NULL);
+ if (!cbc->cbc_debugfs_dir)
+ return -ENOMEM;
+/* regset dump */
+ cbc->regset = devm_kzalloc(dev, sizeof(*cbc->regset), GFP_KERNEL);
+ if (!cbc->regset)
+ goto err;
+
+ cbc->regset->regs = cbc_regs;
+ cbc->regset->nregs = ARRAY_SIZE(cbc_regs);
+ cbc->regset->base = cbc->membase;
+
+ file = debugfs_create_regset32("regdump", S_IRUGO,
+ cbc->cbc_debugfs_dir, cbc->regset);
+ if (!file)
+ goto err;
+
+/* Any register read/write */
+ file = debugfs_create_file("register-address",
+ (S_IRUGO | S_IWUSR | S_IWGRP),
+ cbc->cbc_debugfs_dir, cbc, &cbc_debugfs_addr_fops);
+ if (!file)
+ goto err;
+
+ file = debugfs_create_file("register-value",
+ (S_IRUGO | S_IWUSR | S_IWGRP),
+ cbc->cbc_debugfs_dir, cbc, &cbc_debugfs_val_fops);
+
+ if (!file)
+ goto err;
+
+/* TEST_INT */
+ file = debugfs_create_file("test-int",
+ (S_IRUGO | S_IWUSR | S_IWGRP),
+ cbc->cbc_debugfs_dir, cbc, &cbc_debugfs_test_int_fops);
+ if (!file)
+ goto err;
+
+/* I2C_ACCEL_INT */
+ file = debugfs_create_file("i2c-accel-int",
+ (S_IRUGO | S_IWUSR | S_IWGRP),
+ cbc->cbc_debugfs_dir, cbc, &cbc_debugfs_i2c_accel_int_fops);
+ if (!file)
+ goto err;
+
+ return 0;
+err:
+ debugfs_remove_recursive(cbc->cbc_debugfs_dir);
+ dev_err(dev, "failed to create debugfs entries.\n");
+
+ return -ENOMEM;
+}
+
+static void cbc_debugfs_remove(struct cbc_fpga_data *cbc)
+{
+ debugfs_remove_recursive(cbc->cbc_debugfs_dir);
+}
+#endif
+
+/*
+ * CBC/SAM interrupt handling
+ * The CBC_STATUS_IRQ_EN register is not used in the CBC
+ * The CBC_STATUS_IRQ_ST register just reports the pending
+ * interrupts for each master.
+ */
+static void sam_enable_irq(struct device *dev, enum sam_irq_type type,
+ int irq, u32 mask)
+{
+}
+
+static void sam_disable_irq(struct device *dev, enum sam_irq_type type,
+ int irq, u32 mask)
+{
+}
+
+static u32 sam_irq_status(struct device *dev, enum sam_irq_type type, int irq)
+{
+ struct cbc_fpga_data *cbc = dev_get_drvdata(dev);
+
+ return ioread32(cbc->membase + CBC_STATUS_IRQ_ST);
+}
+
+static void sam_irq_status_clear(struct device *dev, enum sam_irq_type type,
+ int irq, u32 mask)
+{
+ struct cbc_fpga_data *cbc = dev_get_drvdata(dev);
+
+ iowrite32(mask, cbc->membase + CBC_STATUS_IRQ_ST);
+ ioread32(cbc->membase + CBC_STATUS_IRQ_ST);
+
+ /*
+ * Clear the MSI INT_I2C_ACCEL interrupt.
+ * This might cause additional interrupt, but we
+ * won't miss the MSI in the windows from clearing the
+ * CBC_STATUS_IRQ_ST and INT_I2C_ACCEL.
+ */
+ iowrite32(BIT(INT_I2C_ACCEL), cbc->membase + cbc->int_src);
+ ioread32(cbc->membase + cbc->int_src);
+}
+
+static irqreturn_t cbc_irq_handler(int irq, void *data)
+{
+ struct cbc_fpga_data *cbc = data;
+ u32 int_src;
+ int i, iirq, ret = IRQ_NONE;
+
+ int_src = ioread32(cbc->membase + cbc->int_src);
+
+ /* (CBC) Test interrupt - just count */
+ if (int_src & BIT(INT_TEST)) {
+ cbc->test_int_cnt++;
+ iowrite32(BIT(INT_TEST), cbc->membase + cbc->int_src);
+ ioread32(cbc->membase + cbc->int_src);
+ ret = IRQ_HANDLED;
+ }
+
+#ifdef CONFIG_DEBUG_FS
+ if (int_src & BIT(INT_I2C_ACCEL)) {
+ u32 irq_st;
+
+ cbc->i2c_accel_cnt++;
+ irq_st = ioread32(cbc->membase + CBC_STATUS_IRQ_ST);
+ if (!irq_st)
+ cbc->i2c_accel_empty_cnt++;
+ }
+#endif
+
+ for (i = 0; i < CBC_IRQ_NR; i++) {
+ if (int_src & BIT(i)) {
+ iirq = irq_find_mapping(cbc->irq_domain, i);
+ if (iirq) {
+ generic_handle_irq(iirq);
+ ret = IRQ_HANDLED;
+ }
+ }
+ }
+
+ return ret;
+}
+
+/* irq_chip */
+static void cbc_irq_unmask(struct irq_data *data)
+{
+ struct cbc_fpga_data *cbc = irq_data_get_irq_chip_data(data);
+ unsigned long flags;
+ int irq = data->hwirq & 0x3f;
+ u32 int_en;
+
+ spin_lock_irqsave(&cbc->irq_lock, flags);
+
+ int_en = ioread32(cbc->membase + cbc->int_en);
+ iowrite32(int_en | BIT(irq), cbc->membase + cbc->int_en);
+ ioread32(cbc->membase + cbc->int_en);
+
+ spin_unlock_irqrestore(&cbc->irq_lock, flags);
+}
+
+static void cbc_irq_mask(struct irq_data *data)
+{
+ struct cbc_fpga_data *cbc = irq_data_get_irq_chip_data(data);
+ unsigned long flags;
+ int irq = data->hwirq & 0x3f;
+ u32 int_en;
+
+ spin_lock_irqsave(&cbc->irq_lock, flags);
+
+ int_en = ioread32(cbc->membase + cbc->int_en);
+ iowrite32(int_en & ~BIT(irq), cbc->membase + cbc->int_en);
+ ioread32(cbc->membase + cbc->int_en);
+
+ spin_unlock_irqrestore(&cbc->irq_lock, flags);
+}
+
+static void cbc_irq_ack(struct irq_data *data)
+{
+ struct cbc_fpga_data *cbc = irq_data_get_irq_chip_data(data);
+ int irq = data->hwirq & 0x3f;
+
+ iowrite32(BIT(irq), cbc->membase + cbc->int_src);
+ ioread32(cbc->membase + cbc->int_src);
+}
+
+struct irq_chip cbc_irq_chip = {
+ .name = "cbc-core",
+ .irq_ack = cbc_irq_ack,
+ .irq_mask = cbc_irq_mask,
+ .irq_unmask = cbc_irq_unmask,
+};
+
+/* irq_domain */
+static int cbc_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ irq_set_chip_data(virq, h->host_data);
+ irq_set_chip_and_handler(virq, &cbc_irq_chip, handle_level_irq);
+ irq_set_noprobe(virq);
+
+ return 0;
+}
+
+static struct irq_domain_ops cbc_irq_domain_ops = {
+ .map = cbc_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+static int cbc_request_interrupt(struct cbc_fpga_data *cbc)
+{
+ int err;
+ struct pci_dev *pdev = cbc->pdev;
+ struct device *dev = &pdev->dev;
+
+ if (!pdev->irq)
+ return -ENODEV;
+
+ if (!pci_enable_msi(pdev)) {
+ cbc->int_src = CBC_TOP_REGS_MSI_INT_SRC;
+ cbc->int_en = CBC_TOP_REGS_MSI_INT_EN;
+ } else {
+ cbc->int_src = CBC_TOP_REGS_INT_SRC;
+ cbc->int_en = CBC_TOP_REGS_INT_EN;
+ }
+
+ cbc->irq_domain = irq_domain_add_linear(dev->of_node, CBC_IRQ_NR,
+ &cbc_irq_domain_ops, cbc);
+ if (!cbc->irq_domain) {
+ dev_err(dev, "could not create irq domain\n");
+ return -ENOMEM;
+ }
+
+ err = devm_request_irq(dev, pdev->irq, cbc_irq_handler,
+ 0, dev_driver_string(dev), cbc);
+
+ if (err) {
+ dev_err(dev, "failed to request irq %d\n", pdev->irq);
+ irq_domain_remove(cbc->irq_domain);
+ pci_disable_msi(pdev);
+ return err;
+ }
+
+ return 0;
+}
+
+static void cbc_free_interrupt(struct cbc_fpga_data *cbc)
+{
+ struct pci_dev *pdev = cbc->pdev;
+
+ devm_free_irq(&pdev->dev, pdev->irq, cbc);
+ if (cbc->irq_domain)
+ irq_domain_remove(cbc->irq_domain);
+ pci_disable_msi(pdev);
+}
+
+/* scratch access test */
+static int cbc_test_scratch(struct cbc_fpga_data *cbc)
+{
+ struct pci_dev *pdev = cbc->pdev;
+ struct device *dev = &pdev->dev;
+ u32 acc, i;
+
+ /*
+ * Check rw register access -> use the scratch reg.
+ * Earlier revisions fail on scratch rw test
+ */
+ iowrite32(0xA5A5A5A5, cbc->membase + CBC_TOP_REGS_SCRATCH);
+ acc = ioread32(cbc->membase + CBC_TOP_REGS_SCRATCH);
+ if (acc != 0xA5A5A5A5) {
+ dev_err(dev,
+ "CBC scratch write failed: %08x -> %08x",
+ 0xA5A5A5A5, acc);
+ return -EIO;
+ }
+
+ for (i = 0; i < 0xf0000000; i += 0x01010101) {
+ iowrite32(i, cbc->membase + CBC_TOP_REGS_SCRATCH);
+ acc = ioread32(cbc->membase + CBC_TOP_REGS_SCRATCH);
+ if (acc != i) {
+ dev_err(dev, "CBC scratch write failed: %08x -> %08x",
+ i, acc);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Check if the CBC is capable of generating interrupts.
+ * Use the test interrupt bit. The counter is incremented
+ * from the interrupt handler. We want it > 0
+ */
+static int cbc_test_interrupts(struct cbc_fpga_data *cbc)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(100);
+
+ cbc->test_int_cnt = 0;
+ cbc_fire_test_int(cbc);
+
+ while (!cbc->test_int_cnt) {
+ if (time_after(jiffies, timeout))
+ break;
+ schedule_timeout_interruptible(msecs_to_jiffies(10));
+ }
+
+ return cbc->test_int_cnt;
+}
+
+/* sysfs entries */
+static ssize_t version_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct cbc_fpga_data *cbc = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%u\n", cbc->fpga_rev);
+}
+
+static ssize_t cbc_date_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct cbc_fpga_data *cbc = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%08x\n", cbc->fpga_date);
+}
+
+static DEVICE_ATTR(version, S_IRUGO, version_show, NULL);
+static DEVICE_ATTR(cbc_date, S_IRUGO, cbc_date_show, NULL);
+
+static struct attribute *cbc_attrs[] = {
+ &dev_attr_version.attr,
+ &dev_attr_cbc_date.attr,
+ NULL,
+};
+
+static struct attribute_group cbc_attr_group = {
+ .attrs = cbc_attrs,
+};
+
+/* SAM drivers interrupt handling */
+static struct sam_platform_data cbc_sam_plat_data = {
+ .enable_irq = sam_enable_irq,
+ .disable_irq = sam_disable_irq,
+ .irq_status = sam_irq_status,
+ .irq_status_clear = sam_irq_status_clear,
+ .i2c_mux_channels = 4,
+};
+
+/*
+ * List of modules to be loaded. Should only be necessary if devicetree
+ * is not configured, but doesn't hurt otherwise.
+ */
+const char *cbc_modules[] = {
+ "i2c-sam",
+ "sam-flash",
+ "gpio-cbc",
+ NULL
+};
+
+static void cbc_request_modules(bool wait)
+{
+ struct module *m;
+ int i;
+
+ for (i = 0; cbc_modules[i]; i++) {
+ mutex_lock(&module_mutex);
+ m = find_module(cbc_modules[i]);
+ mutex_unlock(&module_mutex);
+ if (!m) {
+ if (wait)
+ request_module(cbc_modules[i]);
+ else
+ request_module_nowait(cbc_modules[i]);
+ }
+ }
+}
+
+static struct cbc_fpga_platdata cbc_fpga_platdata[] = {
+ [JNX_CBD_FPGA_PTX1K] = {
+ .board_type = JNX_CBD_FPGA_PTX1K,
+ },
+ [JNX_CBD_FPGA_PTX1K_P2] = {
+ .board_type = JNX_CBD_FPGA_PTX1K_P2,
+ },
+ [JNX_CBD_FPGA_PTX21K] = {
+ .board_type = JNX_CBD_FPGA_PTX21K,
+ },
+};
+
+static int cbc_fpga_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ int err;
+ struct cbc_fpga_data *cbc;
+ struct device *dev = &pdev->dev;
+
+ /* Request modules, but keep going */
+ cbc_request_modules(false);
+
+ err = pcim_enable_device(pdev);
+ if (err)
+ return err;
+
+ err = pcim_iomap_regions(pdev, 1 << 0, "cbc-core");
+ if (err)
+ return err;
+
+ cbc = devm_kzalloc(dev, sizeof(*cbc), GFP_KERNEL);
+ if (cbc == NULL)
+ return -ENOMEM;
+
+ cbc->membase = pcim_iomap_table(pdev)[0];
+ cbc->pdev = pdev;
+ pci_set_drvdata(pdev, cbc);
+
+/* Check IO */
+ err = cbc_test_scratch(cbc);
+ if (err)
+ return err;
+
+/* CBC Revision ID */
+ cbc->fpga_rev = ioread32(cbc->membase + CBC_TOP_REGS_RTL_REVISION);
+ cbc->fpga_date = ioread32(cbc->membase + CBC_TOP_REGS_FPGA_DATE);
+ cbc->i2c_mstr_count =
+ ioread32(cbc->membase + CBC_INFO_I2C_MASTER_COUNT) & 0xff;
+
+ spin_lock_init(&cbc->irq_lock);
+
+ /* i2c accel */
+ cbc->mfd_cells[CBC_CELL_SAM_I2C].name = "i2c-sam";
+ cbc->mfd_cells[CBC_CELL_SAM_I2C].num_resources = CBC_RES_NR;
+ cbc->mfd_cells[CBC_CELL_SAM_I2C].resources = cbc->mfd_i2c_resources;
+ cbc->mfd_cells[CBC_CELL_SAM_I2C].of_compatible = "jnx,i2c-sam";
+ cbc->mfd_cells[CBC_CELL_SAM_I2C].platform_data = &cbc_sam_plat_data;
+ cbc->mfd_cells[CBC_CELL_SAM_I2C].pdata_size =
+ sizeof(struct sam_platform_data);
+
+ cbc->mfd_i2c_resources[0].start = CBC_I2C_ACCEL_IF_MEM_START;
+ cbc->mfd_i2c_resources[0].end = CBC_I2C_ACCEL_IF_MEM_END;
+ cbc->mfd_i2c_resources[0].flags = IORESOURCE_MEM;
+ cbc->mfd_i2c_resources[1].start =
+ cbc->mfd_i2c_resources[1].end = INT_I2C_ACCEL;
+ cbc->mfd_i2c_resources[1].flags = IORESOURCE_IRQ;
+
+ /* epcs64,128 mtd flash */
+ cbc->mfd_cells[CBC_CELL_SAM_MTD].name = "flash-sam";
+ cbc->mfd_cells[CBC_CELL_SAM_MTD].num_resources = CBC_RES_NR_NOIRQ;
+ cbc->mfd_cells[CBC_CELL_SAM_MTD].resources = cbc->mfd_mtd_resources;
+ cbc->mfd_cells[CBC_CELL_SAM_MTD].of_compatible = "jnx,flash-sam";
+
+ cbc->mfd_mtd_resources[0].start = CBC_FLASH_IF_MEM_START;
+ cbc->mfd_mtd_resources[0].end = CBC_FLASH_IF_MEM_END;
+ cbc->mfd_mtd_resources[0].flags = IORESOURCE_MEM;
+
+ /* CBC GPIO */
+ cbc->mfd_cells[CBC_CELL_GPIO].name = "gpio-cbc";
+ cbc->mfd_cells[CBC_CELL_GPIO].num_resources = CBC_RES_NR_NOIRQ;
+ cbc->mfd_cells[CBC_CELL_GPIO].resources = cbc->mfd_gpio_resources;
+ cbc->mfd_cells[CBC_CELL_GPIO].of_compatible = "jnx,gpio-cbc";
+ cbc->mfd_gpio_resources[0].flags = IORESOURCE_MEM;
+
+ /* CBC JNX */
+ cbc->mfd_cells[CBC_CELL_JNX_CBD].name = "jnx-cbd-fpga";
+ cbc->mfd_cells[CBC_CELL_JNX_CBD].num_resources = CBC_RES_NR_NOIRQ;
+ cbc->mfd_cells[CBC_CELL_JNX_CBD].resources = cbc->mfd_jnx_resources;
+ cbc->mfd_cells[CBC_CELL_JNX_CBD].of_compatible = "jnx,jnx-cbd-fpga";
+ cbc->mfd_cells[CBC_CELL_JNX_CBD].platform_data =
+ &cbc_fpga_platdata[id->driver_data];
+ cbc->mfd_cells[CBC_CELL_JNX_CBD].pdata_size =
+ sizeof(struct cbc_fpga_platdata);
+
+ cbc->mfd_jnx_resources[0].flags = IORESOURCE_MEM;
+
+ /* CBC presence detect as GPIO (CH_PRS) */
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS].name = "gpio-cbc-presence";
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS].id = 0;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS].num_resources =
+ CBC_RES_NR_NOIRQ;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS].resources =
+ cbc->mfd_gpio_prs_resources;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS].of_compatible =
+ "jnx,gpio-cbc-presence";
+ cbc->mfd_gpio_prs_resources[0].flags = IORESOURCE_MEM;
+
+ /* CBC presence detect as GPIO (OTHER_CH_PRS) */
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_OTHER].name = "gpio-cbc-presence";
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_OTHER].id = 1;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_OTHER].num_resources =
+ CBC_RES_NR_NOIRQ;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_OTHER].resources =
+ cbc->mfd_gpio_prs_resources;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_OTHER].of_compatible =
+ "jnx,gpio-cbc-presence-other";
+ cbc->mfd_gpio_prs_resources[0].flags = IORESOURCE_MEM;
+
+ /* CBC presence detect as GPIO (CH_PRS_SIB) */
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_SIB].name = "gpio-cbc-presence";
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_SIB].id = 2;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_SIB].num_resources =
+ CBC_RES_NR_NOIRQ;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_SIB].resources =
+ cbc->mfd_gpio_prs_resources;
+ cbc->mfd_cells[CBC_CELL_GPIO_PRS_SIB].of_compatible =
+ "jnx,gpio-cbc-presence-sib";
+ cbc->mfd_gpio_prs_resources[0].flags = IORESOURCE_MEM;
+
+ /* CBC is using MSI, make sure bus master is enabled */
+ pci_set_master(pdev);
+
+ /* Setup interrupts - MSI/INTx */
+ err = cbc_request_interrupt(cbc);
+ if (err < 0)
+ return err;
+
+ err = cbc_test_interrupts(cbc);
+ if (!err) {
+ dev_warn(dev, "Interrupt test failed, using poll mode");
+ cbc->mfd_cells[CBC_CELL_SAM_I2C].num_resources =
+ CBC_RES_NR_NOIRQ;
+ }
+
+ /* Request modules for good. */
+ cbc_request_modules(true);
+
+ err = mfd_add_devices(dev, pdev->bus->number, cbc->mfd_cells,
+ ARRAY_SIZE(cbc->mfd_cells), &pdev->resource[0],
+ 0, cbc->irq_domain);
+ if (err < 0)
+ goto err_int;
+
+ err = sysfs_create_group(&pdev->dev.kobj, &cbc_attr_group);
+ if (err) {
+ sysfs_remove_group(&pdev->dev.kobj, &cbc_attr_group);
+ dev_err(&pdev->dev, "Failed to create attr group\n");
+ goto err_mfd;
+ }
+
+ dev_dbg(dev, "CBC/SAM I2C: Master count: %u\n", cbc->i2c_mstr_count);
+ dev_info(dev, "CBC FPGA Revision #%u (%02X/%02X/%04X)\n",
+ cbc->fpga_rev & 0xffff, (cbc->fpga_date >> 24) & 0xff,
+ (cbc->fpga_date >> 16) & 0xff, cbc->fpga_date & 0xffff);
+
+#ifdef CONFIG_DEBUG_FS
+ cbc_debugfs_init(cbc);
+#endif
+ return 0;
+
+err_mfd:
+ mfd_remove_devices(dev);
+
+err_int:
+ cbc_free_interrupt(cbc);
+
+ return err;
+}
+
+static void cbc_fpga_remove(struct pci_dev *pdev)
+{
+ struct cbc_fpga_data *cbc = pci_get_drvdata(pdev);
+
+#ifdef CONFIG_DEBUG_FS
+ cbc_debugfs_remove(cbc);
+#endif
+ sysfs_remove_group(&pdev->dev.kobj, &cbc_attr_group);
+ mfd_remove_devices(&pdev->dev);
+ cbc_free_interrupt(cbc);
+}
+
+static const struct pci_device_id cbc_fpga_id_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_JUNIPER, PCI_DEVICE_ID_JNX_CBC),
+ .driver_data = JNX_CBD_FPGA_PTX1K },
+ { PCI_DEVICE(PCI_VENDOR_ID_JUNIPER, PCI_DEVICE_ID_JNX_CBC_P2),
+ .driver_data = JNX_CBD_FPGA_PTX1K_P2 },
+ { PCI_DEVICE(PCI_VENDOR_ID_JUNIPER, PCI_DEVICE_ID_JNX_OMG_CBC),
+ .driver_data = JNX_CBD_FPGA_PTX21K },
+ { }
+};
+MODULE_DEVICE_TABLE(pci, cbc_fpga_id_tbl);
+
+static struct pci_driver cbc_fpga_driver = {
+ .name = "cbc-core",
+ .id_table = cbc_fpga_id_tbl,
+ .probe = cbc_fpga_probe,
+ .remove = cbc_fpga_remove,
+};
+
+module_pci_driver(cbc_fpga_driver);
+
+MODULE_DESCRIPTION("Juniper PTX1K RCB CBC MFD core driver");
+MODULE_AUTHOR("Georgi Vlaev <gvlaev@xxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/cbc-core.h b/include/linux/mfd/cbc-core.h
new file mode 100644
index 0000000..dc510a7
--- /dev/null
+++ b/include/linux/mfd/cbc-core.h
@@ -0,0 +1,181 @@
+/*
+ * PTX1K CBC FPGA registers
+ *
+ * Copyright (C) 2014 Juniper Networks
+ * Author: Georgi Vlaev <gvlaev@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __CBC_CORE_H__
+#define __CBC_CORE_H__
+
+enum jnx_cbd_fpga_board_types {
+ JNX_CBD_FPGA_PTX1K, JNX_CBD_FPGA_PTX1K_P2, JNX_CBD_FPGA_PTX21K };
+
+struct cbc_fpga_platdata {
+ enum jnx_cbd_fpga_board_types board_type;
+};
+
+#define CBC_TOP_REGS_INT_SRC 0x000
+#define CBC_TOP_REGS_INT_EN 0x004
+#define CBC_TOP_REGS_I2C_SEL 0x010
+#define CBC_TOP_REGS_CH_PRS 0x014
+#define CBC_TOP_REGS_RTL_REVISION 0x018
+#define CBC_TOP_REGS_PWR_STATUS 0x01c
+#define CBC_TOP_REGS_I2CS_INT 0x020
+#define CBC_TOP_REGS_I2CS_INT_EN 0x024
+#define CBC_TOP_REGS_MSTR_CONFIG 0x03c
+#define CBC_TOP_REGS_MSTR_ALIVE 0x040
+#define CBC_TOP_REGS_MSTR_ALIVE_CNT 0x044
+#define CBC_TOP_REGS_FPGA_REV 0x060
+#define CBC_TOP_REGS_FPGA_DATE 0x064
+#define CBC_TOP_REGS_DEVICE_CTRL 0x0c0
+#define CBC_TOP_REGS_SLOT_ID 0x0c4
+#define CBC_TOP_REGS_SCRATCH 0x0c8
+#define CBC_TOP_REGS_RE_HALT 0x0cc
+#define CBC_TOP_REGS_OTHER_CH_PRS_CHANGE 0x0d4
+#define CBC_TOP_REGS_FPC_SPARE_A 0x0dc
+#define CBC_TOP_REGS_FT_SPARE 0x0e4
+#define CBC_TOP_REGS_CB_SPARE 0x0e8
+#define CBC_TOP_REGS_MTTR_0 0x0ec
+#define CBC_TOP_REGS_MTTR_1 0x0f0
+#define CBC_TOP_REGS_MTTR_2 0x0f4
+#define CBC_TOP_REGS_MSTR_FRC 0x0f8
+#define CBC_TOP_REGS_MSTR_RSN 0x0fc
+#define CBC_TOP_REGS_ME_WRITE_0 0x100
+#define CBC_TOP_REGS_ME_WRITE_1 0x104
+#define CBC_TOP_REGS_ME_WRITE_2 0x108
+#define CBC_TOP_REGS_ME_WRITE_3 0x10c
+#define CBC_TOP_REGS_ME_WRITE_4 0x110
+#define CBC_TOP_REGS_ME_WRITE_5 0x114
+#define CBC_TOP_REGS_ME_READ_0 0x120
+#define CBC_TOP_REGS_ME_READ_1 0x124
+#define CBC_TOP_REGS_ME_READ_2 0x128
+#define CBC_TOP_REGS_ME_READ_3 0x12c
+#define CBC_TOP_REGS_ME_READ_4 0x130
+#define CBC_TOP_REGS_ME_READ_5 0x134
+#define CBC_TOP_REGS_ME_STATUS 0x13c
+#define CBC_TOP_REGS_LIU_CONFIG 0x140
+#define CBC_TOP_REGS_CBC_8112_8614_RST 0x144
+#define CBC_TOP_REGS_CCG_CONFIG 0x148
+#define CBC_TOP_REGS_SFPP_CONTROL 0x14c
+#define CBC_TOP_REGS_SFPP_PCIE_FT_STATUS 0x150
+#define CBC_TOP_REGS_GPIO_CTRL 0x168
+#define CBC_TOP_REGS_GPIO_OUTPUT_DATA 0x16c
+#define CBC_TOP_REGS_GPIO_INPUT_DATA 0x170
+#define CBC_TOP_REGS_CCG_STATUS_RT 0x174
+#define CBC_TOP_REGS_CCG_STATUS_LATCHED 0x178
+#define CBC_TOP_REGS_CCG_STATUS_INTERRUPT_ENABLE 0x17c
+#define CBC_TOP_REGS_OTHER_LED 0x180
+#define CBC_TOP_REGS_SFPP_I2C_RW_CONTROL 0x190
+#define CBC_TOP_REGS_SFPP_I2C_REG_ADDRESS 0x194
+#define CBC_TOP_REGS_SFPP_I2C_WDATA 0x198
+#define CBC_TOP_REGS_SFPP_I2C_RDATA 0x19c
+#define CBC_TOP_REGS_SFPP_I2C_STATUS 0x1a0
+#define CBC_TOP_REGS_SFPP_I2C_DEV_ADDRESS 0x1a4
+#define CBC_TOP_REGS_SIB_SPARE_OUTPUTENABLE 0x1a8
+#define CBC_TOP_REGS_SIB_SPARE_OUTPUT 0x1ac
+#define CBC_TOP_REGS_SIB_SPARE_INPUT 0x1c0
+#define CBC_TOP_REGS_FPC_SPARE_OUTPUTENABLE 0x1c4
+#define CBC_TOP_REGS_FPC_SPARE_OUTPUT 0x1c8
+#define CBC_TOP_REGS_FPC_SPARE_INPUT 0x1cc
+#define CBC_TOP_REGS_OTHER_SPARE_OUTPUTENABLE 0x1d0
+#define CBC_TOP_REGS_OTHER_SPARE_OUTPUT 0x1d4
+#define CBC_TOP_REGS_OTHER_SPARE_INPUT 0x1d8
+#define CBC_TOP_REGS_MSI_INT_SRC 0x1e0
+#define CBC_TOP_REGS_MSI_INT_EN 0x1e4
+#define CBC_TOP_REGS_TOD_LOCK 0x1f0
+#define CBC_TOP_REGS_TOD_TIME_79_48 0x1f4
+#define CBC_TOP_REGS_TOD_TIME_47_16 0x1f8
+#define CBC_TOP_REGS_TOD_TIME_15_0 0x1fc
+#define CBC_TOP_REGS_TOD_CLKACC_CRC 0x200
+#define CBC_TOP_REGS_APS_COMMAND_REGISTER 0x400
+#define CBC_TOP_REGS_APS_STATUS_REGISTER 0x404
+#define CBC_TOP_REGS_APS_FRAME_DATA0 0x420
+#define CBC_TOP_REGS_APS_FRAME_DATA1 0x424
+#define CBC_TOP_REGS_APS_FRAME_DATA2 0x428
+#define CBC_TOP_REGS_APS_FRAME_DATA3 0x42c
+#define CBC_TOP_REGS_APS_FRAME_DATA4 0x430
+#define CBC_TOP_REGS_APS_FRAME_DATA5 0x434
+#define CBC_TOP_REGS_APS_FRAME_DATA6 0x438
+#define CBC_TOP_REGS_APS_FRAME_DATA7 0x43c
+#define CBC_TOP_REGS_APS_APS_REV_REG 0x440
+#define CBC_TOP_REGS_APS_APS_DEBUG0 0x444
+#define CBC_TOP_REGS_APS_COUNTER_GOOD_FRAMES 0x448
+#define CBC_TOP_REGS_APS_COUNTER_BAD_FRAMES 0x44c
+#define CBC_TOP_REGS_APS_APS_LINK_STATUS 0x450
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG0 0x454
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG1 0x458
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG2 0x45c
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG3 0x460
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG4 0x464
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG5 0x468
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG6 0x46c
+#define CBC_TOP_REGS_APS_INTERRUPT_LOG7 0x470
+
+/* CBC: SAM register base is @0x1000 */
+#define CBC_SAM_BASE 0x1000
+#define CBC_INFO_I2C_MASTER_COUNT (CBC_SAM_BASE + 0x00c)
+#define CBC_INFO_FAST_I2C_CONFIG_A (CBC_SAM_BASE + 0x018)
+#define CBC_INFO_FAST_I2C_CONFIG_B (CBC_SAM_BASE + 0x01c)
+#define CBC_INFO_FEATURES (CBC_SAM_BASE + 0x020)
+#define CBC_INFO_PMA_CONTROL (CBC_SAM_BASE + 0x040)
+#define CBC_INFO_PMA_STATUS (CBC_SAM_BASE + 0x044)
+#define CBC_STATUS_IRQ_EN (CBC_SAM_BASE + 0x104)
+#define CBC_STATUS_IRQ_ST (CBC_SAM_BASE + 0x108)
+/* remote upgrade_if */
+#define CBC_REMOTE_UPGRADE_CONTROL (CBC_SAM_BASE + 0x200)
+#define CBC_REMOTE_UPGRADE_STATUS (CBC_SAM_BASE + 0x204)
+/* flash_if */
+#define CBC_FLASH_IF_ADDRESS (CBC_SAM_BASE + 0x300)
+#define CBC_FLASH_IF_BYTE_COUNT (CBC_SAM_BASE + 0x304)
+#define CBC_FLASH_IF_CONTROL (CBC_SAM_BASE + 0x308)
+#define CBC_FLASH_IF_STATUS (CBC_SAM_BASE + 0x30c)
+#define CBC_FLASH_IF_WRITE_DATA (CBC_SAM_BASE + 0x400)
+#define CBC_FLASH_IF_READ_DATA (CBC_SAM_BASE + 0x500)
+
+/* Constants used for FPGA upgrades */
+#define SAM_FPGA_FLASH_VALID_BIT 0xA5A5A5A5
+#define SAM_FPGA_FLASH_VALID_BIT_ADDR 0x7F0000 /* EPCS64 */
+
+/* FPGA remote upgrade registers */
+#define SAM_FPGA_REMOTE_UPGRADE_TRIG_BIT 0x08000000
+#define SAM_FPGA_REMOTE_UPGRADE_STATUS_BUSY 0x01000000
+#define SAM_FPGA_REMOTE_UPGRADE_READ_PARAM 0x80000000
+#define SAM_FPGA_REMOTE_UPGRADE_WRITE_PARAM 0x40000000
+#define SAM_FPGA_REMOTE_UPGRADE_CONTROL_RESET 0x10000000
+
+#define SAM_FPGA_REMOTE_UPGRADE_PAGE_SEL (0x04 << 24)
+#define SAM_FPGA_REMOTE_UPGRADE_ANF (0x05 << 24)
+#define SAM_FPGA_USER_IMAGE_BASE 0x400000
+
+/* CBC/SAM flash */
+#define FLASH_STATUS_BUSY 0x01
+#define SAM_FLASH_IF_CONTROL_READ 0x01
+#define SAM_FLASH_IF_CONTROL_READ_SID 0x80
+#define ECS64_PAGE_SIZE 0x100
+
+/* MFD resources */
+/* CBC/SAM flash - mtd/devices/flash-sam.c */
+#define CBC_FLASH_IF_MEM_START (CBC_SAM_BASE)
+#define CBC_FLASH_IF_MEM_END (CBC_SAM_BASE + 0x05ff)
+/* CBC/SAM I2C Accel - i2c/busses/i2c-sam.c */
+#define CBC_I2C_ACCEL_IF_MEM_START (CBC_SAM_BASE)
+#define CBC_I2C_ACCEL_IF_MEM_END (CBC_SAM_BASE + 0x1ffff)
+
+/* MSI & legacy nterrupts [W1C] */
+#define INT_TEST 31 /* Test interrupt */
+#define INT_MSTRSHIP_LOSS 30 /* Mastership loss */
+#define INT_I2C_ACCEL 25 /* Cascade I2C accel int */
+#define INT_CASI2CS 24 /* casI2CS_INT */
+#define INT_SFPP_PCIE_STATUS_CHANGE 23 /* SFPP status, PCIe status */
+#define INT_CCG 22 /* CCG INT */
+#define INT_PSM_STATUS_CHANGE 21 /* PSMSatusChange */
+#define INT_OTHERCH_PRS_CHANGE 18 /* OTHER_CH_PRS change */
+#define INT_CH_PRS_CHANGE 16 /* CH_PRS_change */
+#define INT_2C_CTRL 14 /* I2C_CTRL_INT */
+
+#endif /*__CBC_CORE_H__*/
--
1.9.1
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[PATCH 1/6] mfd: Add support for the PTX1K CBC FPGA
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- Subject: [PATCH 1/6] mfd: Add support for the PTX1K CBC FPGA
- From: Pantelis Antoniou <pantelis.antoniou@xxxxxxxxxxxx>
- Date: Fri, 7 Oct 2016 18:20:09 +0300
- In-reply-to: <1475853614-22409-1-git-send-email-pantelis.antoniou@konsulko.com>
- References: <1475853614-22409-1-git-send-email-pantelis.antoniou@konsulko.com>
- References:
- [PATCH 0/6] Introduce Juniper CBC FPGA
- From: Pantelis Antoniou
- [PATCH 0/6] Introduce Juniper CBC FPGA
- Prev by Date: [PATCH 3/4] gpio: ptxpmb-ext-cpld: Add driver for Juniper's PTXPMB extended CPLD
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