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Message-ID: <CAH9NwWerwCH4TDCiHBJf=psQGoVoEChK5EWxOjB0W9Uy+DuPhw@mail.gmail.com>
Date: Mon, 6 Feb 2012 20:07:16 +0100
From: Christian Gmeiner <christian.gmeiner@...il.com>
To: Sascha Hauer <s.hauer@...gutronix.de>
Cc: linux-kernel@...r.kernel.org, Samuel Ortiz <sameo@...ux.intel.com>,
Jean Delvare <khali@...ux-fr.org>, linux-i2c@...r.kernel.org,
linux-watchdog@...r.kernel.org, Ben Dooks <ben-linux@...ff.org>,
kernel@...gutronix.de
Subject: Re: [PATCH 1/3] mfd: Add basic support for the Congatec CGEB BIOS interface
> The Congatec CGEB is a BIOS interface found on some Congatec x86
> modules. It provides access to on board peripherals like I2C busses
> and watchdogs. This driver contains the basic support for accessing
> the CGEB interface and registers the child devices.
>
> Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
> ---
> drivers/mfd/Kconfig | 10 +
> drivers/mfd/Makefile | 1 +
> drivers/mfd/congatec-cgeb.c | 590 +++++++++++++++++++++++++++++++++++++
> include/linux/mfd/congatec-cgeb.h | 105 +++++++
> 4 files changed, 706 insertions(+), 0 deletions(-)
> create mode 100644 drivers/mfd/congatec-cgeb.c
> create mode 100644 include/linux/mfd/congatec-cgeb.h
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index f1391c2..873d04f 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -772,6 +772,16 @@ config MFD_INTEL_MSIC
> Passage) chip. This chip embeds audio, battery, GPIO, etc.
> devices used in Intel Medfield platforms.
>
> +config MFD_CONGATEC_CGEB
> + tristate "Support for the Congatec CGEB BIOS interface"
> + depends on X86_32
> + help
> + The Congatec CGEB BIOS interface provides access to onboard
> + peripherals like I2C busses and watchdogs. additional drivers must be
> + enabled in order to use the functionality of the device.
> + Say y or m here if you are using a congatec module with CGEB interface,
> + otherwise say n.
> +
> endmenu
> endif
>
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index b2292eb..cee77f7 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -104,3 +104,4 @@ obj-$(CONFIG_MFD_PM8XXX_IRQ) += pm8xxx-irq.o
> obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
> obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o
> obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o
> +obj-$(CONFIG_MFD_CONGATEC_CGEB) += congatec-cgeb.o
> diff --git a/drivers/mfd/congatec-cgeb.c b/drivers/mfd/congatec-cgeb.c
> new file mode 100644
> index 0000000..445a9c5
> --- /dev/null
> +++ b/drivers/mfd/congatec-cgeb.c
> @@ -0,0 +1,590 @@
> +/*
> + * CGEB driver
> + *
> + * (c) 2011 Sascha Hauer, Pengutronix
> + *
> + * Based on code from Congatec AG.
> + *
> + * CGEB is a BIOS interface found on congatech modules. It consists of
> + * code found in the BIOS memory map which is called in a ioctl like
> + * fashion. This file contains the basic driver for this interface
> + * which provides access to the GCEB interface and registers the child
> + * devices like I2C busses and watchdogs.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; version 2 of the License.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +#include <linux/kernel.h>
> +#include <linux/string.h>
> +#include <linux/version.h>
> +#include <linux/module.h>
> +#include <linux/sched.h>
> +#include <linux/io.h>
> +#include <linux/string.h>
> +#include <linux/errno.h>
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/delay.h>
> +#include <linux/platform_device.h>
> +#include <linux/mfd/congatec-cgeb.h>
> +
> +#include <generated/autoconf.h>
> +#include <stddef.h>
> +
> +#define CGOS_BOARD_MAX_SIZE_ID_STRING 16
> +
> +#define CGEB_VERSION_MAJOR 1
> +
> +#define CGEB_GET_VERSION_MAJOR(v) (((unsigned long)(v))>>24)
> +
> +/* CGEB Low Descriptor located in 0xc0000-0xfffff */
> +#define CGEB_LD_MAGIC "$CGEBLD$"
> +
> +struct cgeb_low_desc {
> + char magic[8]; /* descriptor magic string */
> + u16 size; /* size of this descriptor */
> + u16 reserved;
> + char bios_name[8]; /* BIOS name and revision "ppppRvvv" */
> + u32 hi_desc_phys_addr; /* phys addr of the high descriptor, can be 0 */
> +};
> +
> +/* CGEB High Descriptor located in 0xfff00000-0xffffffff */
> +#define CGEB_HD_MAGIC "$CGEBHD$"
> +
> +struct cgeb_high_desc {
> + char magic[8]; /* descriptor magic string */
> + u16 size; /* size of this descriptor */
> + u16 reserved;
> + u32 data_size; /* CGEB data area size */
> + u32 code_size; /* CGEB code area size */
> + u32 entry_rel; /* CGEB entry point relative to start */
> +};
> +
> +struct cgeb_far_ptr {
> + u32 off;
> + u16 seg;
> + u16 pad;
> +};
> +
> +struct cgeb_fps {
> + u32 size; /* size of the parameter structure */
> + u32 fct; /* function number */
> + struct cgeb_far_ptr data; /* CGEB data area */
> + u32 cont; /* private continuation pointer */
> + u32 subfps; /* private sub function parameter
> + * structure pointer
> + */
> + u32 subfct; /* sub function pointer */
> + u32 status; /* result codes of the function */
> + u32 unit; /* unit number or type */
> + u32 pars[4]; /* input parameters */
> + u32 rets[2]; /* return parameters */
> + void *iptr; /* input pointer */
> + void *optr; /* output pointer */
> +};
> +
> +/* continuation status codes */
> +#define CGEB_SUCCESS 0
> +#define CGEB_NEXT 1
> +#define CGEB_DELAY 2
> +#define CGEB_NOIRQS 3
> +
> +#define CGEB_DBG_STR 0x100
> +#define CGEB_DBG_HEX 0x101
> +#define CGEB_DBG_DEC 0x102
> +
> +struct cgeb_map_mem {
> + unsigned long phys; /* physical address */
> + unsigned long size; /* size in bytes */
> + struct cgeb_far_ptr virt;
> +};
> +
> +struct cgeb_map_mem_list {
> + unsigned long count; /* number of memory map entries */
> + struct cgeb_map_mem entries[];
> +};
> +
> +struct cgeb_boardinfo {
> + unsigned long size;
> + unsigned long flags;
> + unsigned long classes;
> + unsigned long primary_class;
> + char board[CGOS_BOARD_MAX_SIZE_ID_STRING];
> + /* optional */
> + char vendor[CGOS_BOARD_MAX_SIZE_ID_STRING];
> +};
> +
> +struct cgeb_i2c_info {
> + unsigned long size;
> + unsigned long type;
> + unsigned long frequency;
> + unsigned long maxFrequency;
> +};
> +
> +/* I2C Types */
> +#define CGEB_I2C_TYPE_UNKNOWN 0
> +#define CGEB_I2C_TYPE_PRIMARY 1
> +#define CGEB_I2C_TYPE_SMB 2
> +#define CGEB_I2C_TYPE_DDC 3
> +#define CGEB_I2C_TYPE_BC 4
> +
> +struct cgeb_board_data {
> + void *code;
> + void *data;
> + unsigned short ds;
> + struct cgeb_map_mem_list *map_mem;
> + struct platform_device **devices;
> + int num_devices;
> +
> + /*
> + * entry points to a bimodal C style function that expects a far pointer
> + * to a fps. If cs is 0 then it does a near return, otherwise a far
> + * return. If we ever need a far return then we must not pass cs at all.
> + * parameters are removed by the caller.
> + */
> + void __attribute__((regparm(0)))(*entry)(unsigned short,
> + struct cgeb_fps *, unsigned short);
> +};
> +
> +static unsigned short get_data_segment(void)
> +{
> + unsigned short ret;
> +
> + asm volatile("mov %%ds, %0\n"
> + : "=r"(ret)
> + :
> + : "memory"
> + );
> +
> + return ret;
> +}
> +
> +/*
> + * cgeb_invoke - invoke CGEB BIOS call.
> + *
> + * @board: board context data
> + * @p: CGEB parameters for this call
> + * @fct: CGEB function code
> + * @return: 0 on success or negative error code on failure.
> + *
> + * Call the CGEB BIOS code with the given parameters.
> + */
> +unsigned int cgeb_call(struct cgeb_board_data *board,
> + struct cgeb_function_parameters *p, cgeb_function_t fct)
> +{
> + struct cgeb_fps fps;
> + int i;
> +
> + memset(&fps, 0, sizeof(fps));
> +
> + fps.size = sizeof(fps);
> + fps.fct = fct;
> + fps.data.off = (unsigned long) board->data;
> + fps.data.seg = board->ds;
> + fps.data.pad = 0;
> + fps.status = 0;
> + fps.cont = fps.subfct = fps.subfps = 0;
> + fps.unit = p->unit;
> + for (i = 0; i < 4; i++)
> + fps.pars[i] = p->pars[i];
> + fps.iptr = p->iptr;
> + fps.optr = p->optr;
> +
> + while (1) {
> + pr_debug("CGEB: CGEB: -> size %02x, fct %02x, data %04x:%08x, status %08x\n",
> + fps.size, fps.fct, fps.data.seg, fps.data.off,
> + fps.status);
> +
> + board->entry(0, &fps, fps.data.seg);
> +
> + switch (fps.status) {
> + case CGEB_SUCCESS:
> + goto out;
> + case CGEB_NEXT:
> + break; /* simply call again */
> + case CGEB_NOIRQS:
> + current->state = TASK_INTERRUPTIBLE;
> + schedule_timeout(0);
> + break;
> + case CGEB_DELAY:
> + usleep_range(fps.rets[0], fps.rets[0] + 1000);
> + break;
> + case CGEB_DBG_STR:
> + if (fps.optr)
> + pr_debug("CGEB: %s\n", (char *)fps.optr);
> + break;
> + case CGEB_DBG_HEX:
> + pr_debug("CGEB: 0x%08x\n", fps.rets[0]);
> + break;
> + case CGEB_DBG_DEC:
> + pr_debug("CGEB: %d\n", fps.rets[0]);
> + break;
> +
> + default:
> + /* unknown continuation code */
> + return -EINVAL;
> + }
> + }
> +out:
> + for (i = 0; i < 2; i++)
> + p->rets[i] = fps.rets[i];
> + p->optr = fps.optr;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(cgeb_call);
> +
> +/*
> + * cgeb_call_simple - convenience wrapper for cgeb_call
> + *
> + * @board: board context data
> + * @p: CGEB parameters for this call
> + * @fct: CGEB function code
> + * @return: 0 on success or negative error code on failure.
> + *
> + * Call the CGEB BIOS code with the given parameters.
> + */
description of cgeb_call_simple() is wrong regarding function
arguments.
> +int cgeb_call_simple(struct cgeb_board_data *board,
> + cgeb_function_t fct, unsigned long unit,
> + unsigned long *optr, unsigned long *result)
> +{
> + struct cgeb_function_parameters p;
> + unsigned int ret;
> +
> + memset(&p, 0, sizeof(p));
> + p.unit = unit;
> + p.optr = optr;
> +
> + ret = cgeb_call(board, &p, fct);
> + if (optr)
> + *optr = (unsigned long)p.optr;
> + if (result)
> + *result = p.rets[0];
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(cgeb_call_simple);
> +
> +static void *cgeb_find_magic(void *_mem, size_t len, char *magic)
> +{
> + unsigned long magic0 = ((unsigned long *) magic)[0];
> + unsigned long magic1 = ((unsigned long *) magic)[1];
> + int i = 0;
> +
> + while (i < len) {
> + u32 *mem = _mem + i;
> + if (mem[0] == magic0 && mem[1] == magic1)
> + return mem;
> + i += 16;
> + }
> +
> + return NULL;
> +}
> +
> +static void cgeb_unmap_memory(struct cgeb_board_data *board)
> +{
> + struct cgeb_map_mem_list *pmm;
> + struct cgeb_map_mem *pmme;
> + unsigned long i;
> +
> + if (!board->map_mem)
> + return;
> +
> + pmm = board->map_mem;
> + pmme = pmm->entries;
> + for (i = 0; i < pmm->count; i++, pmme++) {
> + if (pmme->virt.off)
> + iounmap((void *)pmme->virt.off);
> + pmme->virt.off = 0;
> + pmme->virt.seg = 0;
> + }
> +}
> +
> +static int cgeb_map_memory(struct cgeb_board_data *board)
> +{
> + struct cgeb_map_mem_list *pmm;
> + struct cgeb_map_mem *pmme;
> + int i;
> + int ret;
> +
> + ret = cgeb_call_simple(board, CgebMapGetMem, 0, (void *)&board->map_mem,
> + NULL);
> + if (ret)
> + return ret;
> + if (!board->map_mem)
> + return 0;
> +
> + pmm = board->map_mem;
> + pmme = pmm->entries;
> +
> + pr_debug("CGEB: Memory Map with %lu entries\n", pmm->count);
> +
> + for (i = 0; i < pmm->count; i++, pmme++) {
> + if (pmme->phys && pmme->size) {
> + pmme->virt.off =
> + (unsigned long) ioremap_cache(pmme->phys,
> + pmme->size);
> + if (!pmme->virt.off)
> + return -ENOMEM;
> + } else {
> + pmme->virt.off = 0;
> + }
> +
> + pmme->virt.seg = (pmme->virt.off) ? board->ds : 0;
> +
> + pr_debug("CGEB: Map phys %08lx, size %08lx, virt %04x:%08x\n",
> + pmme->phys, pmme->size, pmme->virt.seg,
> + pmme->virt.off);
> + }
> +
> + return cgeb_call_simple(board, CgebMapChanged, 0, NULL, NULL);
> +}
> +
> +static struct cgeb_board_data *cgeb_open(unsigned long base, unsigned long len)
> +{
> + unsigned long dw;
> + struct cgeb_boardinfo *pbi;
> + struct cgeb_low_desc *low_desc;
> + struct cgeb_high_desc *high_desc = NULL;
> + unsigned long high_desc_phys;
> + unsigned long high_desc_len;
> + void __iomem *pcur, *high_desc_virt;
> + int ret;
> +
> + struct cgeb_board_data *board;
> +
> + board = kzalloc(sizeof(*board), GFP_KERNEL);
> + if (!board)
> + return NULL;
> +
> + pcur = ioremap_cache(base, len);
> + if (!pcur)
> + goto err_kfree;
> +
> + /* look for the CGEB descriptor */
> + low_desc = cgeb_find_magic(pcur, len, CGEB_LD_MAGIC);
> + if (!low_desc)
> + goto err_kfree;
> +
> + pr_debug("CGEB: Found CGEB_LD_MAGIC\n");
> +
> + if (low_desc->size < sizeof(struct cgeb_low_desc) - sizeof(long))
> + goto err_kfree;
> +
> + if (low_desc->size >= sizeof(struct cgeb_low_desc)
> + && low_desc->hi_desc_phys_addr)
> + high_desc_phys = low_desc->hi_desc_phys_addr;
> + else
> + high_desc_phys = 0xfff00000;
> +
> + high_desc_len = (unsigned long) -(long) high_desc_phys;
> +
> + pr_debug("CGEB: Looking for CGEB hi desc between phys 0x%lx and 0x%x\n",
> + high_desc_phys, -1);
> +
> + high_desc_virt = ioremap_cache(high_desc_phys, high_desc_len);
> + if (!high_desc_virt)
> + goto err_kfree;
> +
> + pr_debug("CGEB: Looking for CGEB hi desc between virt 0x%p and 0x%p\n",
> + high_desc_virt, high_desc_virt + high_desc_len - 1);
> +
> + high_desc = cgeb_find_magic(high_desc_virt, high_desc_len,
> + CGEB_HD_MAGIC);
> + if (!high_desc)
> + goto err_iounmap;
> +
> + pr_debug("CGEB: Found CGEB_HD_MAGIC\n");
> +
> + if (high_desc->size < sizeof(struct cgeb_high_desc))
> + goto err_iounmap;
> +
> + pr_debug("CGEB: data_size %u, code_size %u, entry_rel %u\n",
> + high_desc->data_size, high_desc->code_size, high_desc->entry_rel);
> +
> + board->code = __vmalloc(high_desc->code_size, GFP_KERNEL,
> + PAGE_KERNEL_EXEC);
> + if (!board->code)
> + goto err_iounmap;
> +
> + memcpy(board->code, high_desc, high_desc->code_size);
> +
> + high_desc = board->code;
> +
> + board->entry = board->code + high_desc->entry_rel;
> +
> + board->ds = get_data_segment();
> +
> + ret = cgeb_call_simple(board, CgebGetCgebVersion, 0, NULL, &dw);
> + if (ret)
> + goto err_vfree;
> +
> + if (CGEB_GET_VERSION_MAJOR(dw) != CGEB_VERSION_MAJOR)
> + goto err_vfree;
> +
> + pr_debug("CGEB: BIOS interface revision: %ld.%ld\n",
> + dw >> 16, dw & 0xffff);
> +
> + if (high_desc->data_size) {
> + board->data = vmalloc(high_desc->data_size);
> + if (!board->data)
> + goto err_vfree;
> + } else {
> + ret = cgeb_call_simple(board, CgebGetDataSize, 0, NULL, &dw);
> + if (!ret && dw) {
> + board->data = vmalloc(dw);
> + if (!board->data)
> + goto err_vfree;
> + }
> + }
> +
> + ret = cgeb_call_simple(board, CgebOpen, 0, NULL, NULL);
> + if (ret)
> + goto err_vfree_data;
> +
> + ret = cgeb_map_memory(board);
> + if (ret)
> + goto err_free_map;
> +
> + ret = cgeb_call_simple(board, CgebBoardGetInfo, 0, &dw, NULL);
> + if (ret)
> + goto err_free_map;
> +
> + pbi = (struct cgeb_boardinfo *) dw;
> +
> + pr_info("CGEB: Board name: %c%c%c%c\n",
> + pbi->board[0], pbi->board[1],
> + pbi->board[2], pbi->board[3]);
> +
> + iounmap(high_desc_virt);
> +
> + return board;
> +
> +err_free_map:
> + cgeb_unmap_memory(board);
> +err_vfree_data:
> + vfree(board->data);
> +err_vfree:
> + vfree(board->code);
> +err_iounmap:
> + iounmap(high_desc_virt);
> +err_kfree:
> + kfree(board);
> + return NULL;
> +}
> +
> +static void cgeb_close(struct cgeb_board_data *board)
> +{
> + cgeb_call_simple(board, CgebClose, 0, NULL, NULL);
> +
> + cgeb_unmap_memory(board);
> +
> + vfree(board->data);
> + vfree(board->code);
> +}
> +
> +static unsigned long cgeb_i2c_get_type(struct cgeb_board_data *brd, int unit)
> +{
> + struct cgeb_i2c_info *info;
> + int ret;
> +
> + ret = cgeb_call_simple(brd, CgebI2CGetInfo, unit, (void *) &info, NULL);
> + if (ret)
> + return ret;
> + if (!info)
> + return -EINVAL;
> + return info->type;
> +}
> +
> +static struct cgeb_board_data *cgeb_board;
> +
> +static int __init cgeb_init(void)
> +{
> + struct cgeb_board_data *board;
> + unsigned long base;
> + int i, ret;
> + struct cgeb_pdata pdata;
> + unsigned long i2c_count, watchdog_count;
> + int num_devices = 0;
> +
> + for (base = 0xf0000; base >= 0xc0000; base -= 0x10000) {
> + board = cgeb_open(base, 0x10000);
> + if (board)
> + break;
> + }
> +
> + if (!board)
> + return -ENODEV;
> +
> + cgeb_board = board;
> +
> + pdata.board = board;
> +
> + cgeb_call_simple(board, CgebI2CCount, 0, NULL, &i2c_count);
> + cgeb_call_simple(board, CgebWDogCount, 0, NULL, &watchdog_count);
> +
> + board->num_devices = i2c_count + watchdog_count;
> + board->devices = kzalloc(sizeof(void *) * (board->num_devices),
> + GFP_KERNEL);
> + if (!board->devices) {
> + ret = -ENOMEM;
> + goto err_out;
> + }
> +
> + for (i = 0; i < i2c_count; i++) {
> + ret = cgeb_i2c_get_type(board, i);
> + if (ret != CGEB_I2C_TYPE_PRIMARY)
> + continue;
> +
> + pdata.unit = i;
> +
> + board->devices[num_devices] =
> + platform_device_register_data(NULL, "cgeb-i2c", i,
> + &pdata, sizeof(pdata));
> + num_devices++;
> + }
> +
> + for (i = 0; i < watchdog_count; i++) {
> + board->devices[num_devices] =
> + platform_device_register_data(NULL, "cgeb-watchdog", i,
> + &pdata, sizeof(pdata));
> + pdata.unit = i;
> +
> + num_devices++;
> + }
> +
> + return 0;
> +err_out:
> + cgeb_close(board);
> + kfree(board);
> +
> + return ret;
> +}
> +
> +static void cgeb_exit(void)
> +{
> + struct cgeb_board_data *board = cgeb_board;
> + int i;
> +
> + for (i = 0; i < board->num_devices; i++)
> + if (board->devices[i])
> + platform_device_unregister(board->devices[i]);
> +
> + cgeb_close(board);
> +
> + kfree(board->devices);
> + kfree(board);
> +}
> +
> +module_init(cgeb_init);
> +module_exit(cgeb_exit);
> +
> +MODULE_AUTHOR("Sascha Hauer <s.hauer@...gutronix.de>");
> +MODULE_DESCRIPTION("CGEB driver");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/mfd/congatec-cgeb.h b/include/linux/mfd/congatec-cgeb.h
> new file mode 100644
> index 0000000..74069fc
> --- /dev/null
> +++ b/include/linux/mfd/congatec-cgeb.h
> @@ -0,0 +1,105 @@
> +#ifndef __CONGATEC_CGEB_H
> +#define __CONGATEC_CGEB_H
> +
> +/* CGEB interface functions */
> +typedef enum {
> + CgebGetCgebVersion = 0,
> + CgebGetSysBiosVersion = 1,
> + CgebGetVgaBiosVersion = 2,
> + CgebGetDataSize = 3,
> + CgebOpen = 4,
> + CgebClose = 5,
> + CgebMapGetMem = 6,
> + CgebMapChanged = 7,
> + CgebMapGetPorts = 8,
> + CgebDelayUs = 9,
> + CgebCgbcReadWrite = 10,
> + CgebCgbcSetControl = 11,
> + CgebCgbcGetInfo = 12,
> + CgebCgbcHandleCommand = 13,
> + CgebBoardGetInfo = 14,
> + CgebBoardGetBootCounter = 15,
> + CgebBoardGetRunningTimeMeter = 16,
> + CgebBoardGetBootErrorLog = 17,
> + CgebVgaCount = 18,
> + CgebVgaGetInfo = 19,
> + CgebVgaGetContrast = 20,
> + CgebVgaSetContrast = 21,
> + CgebVgaGetContrastEnable = 22,
> + CgebVgaSetContrastEnable = 23,
> + CgebVgaGetBacklight = 24,
> + CgebVgaSetBacklight = 25,
> + CgebVgaGetBacklightEnable = 26,
> + CgebVgaSetBacklightEnable = 27,
> + CgebVgaEndDarkBoot = 28,
> + CgebStorageAreaCount = 29,
> + CgebStorageAreaGetInfo = 30,
> + CgebStorageAreaRead = 31,
> + CgebStorageAreaWrite = 32,
> + CgebStorageAreaErase = 33,
> + CgebStorageAreaEraseStatus = 34,
> + CgebI2CCount = 35,
> + CgebI2CGetInfo = 36,
> + CgebI2CGetAddrList = 37,
> + CgebI2CTransfer = 38,
> + CgebI2CGetFrequency = 39,
> + CgebI2CSetFrequency = 40,
> + CgebIOCount = 41,
> + CgebIOGetInfo = 42,
> + CgebIORead = 43,
> + CgebIOWrite = 44,
> + CgebIOGetDirection = 45,
> + CgebIOSetDirection = 46,
> + CgebWDogCount = 47,
> + CgebWDogGetInfo = 48,
> + CgebWDogTrigger = 49,
> + CgebWDogGetConfig = 50,
> + CgebWDogSetConfig = 51,
> + CgebPerformanceGetCurrent = 52,
> + CgebPerformanceSetCurrent = 53,
> + CgebPerformanceGetPolicyCaps = 54,
> + CgebPerformanceGetPolicy = 55,
> + CgebPerformanceSetPolicy = 56,
> + CgebTemperatureCount = 57,
> + CgebTemperatureGetInfo = 58,
> + CgebTemperatureGetCurrent = 59,
> + CgebTemperatureSetLimits = 60,
> + CgebFanCount = 61,
> + CgebFanGetInfo = 62,
> + CgebFanGetCurrent = 63,
> + CgebFanSetLimits = 64,
> + CgebVoltageCount = 65,
> + CgebVoltageGetInfo = 66,
> + CgebVoltageGetCurrent = 67,
> + CgebVoltageSetLimits = 68,
> + CgebStorageAreaLock = 69,
> + CgebStorageAreaUnlock = 70,
> + CgebStorageAreaIsLocked = 71,
> +} cgeb_function_t;
> +
> +struct cgeb_function_parameters {
> + u32 unit; /* unit number or type */
> + u32 pars[4]; /* input parameters */
> + u32 rets[2]; /* return parameters */
> + void *iptr; /* input pointer */
> + void *optr; /* output pointer */
> +};
> +
> +struct cgeb_board_data;
> +
> +unsigned int cgeb_call(struct cgeb_board_data *,
> + struct cgeb_function_parameters *, cgeb_function_t);
> +
> +int cgeb_call_simple(struct cgeb_board_data *,
> + cgeb_function_t, unsigned long,
> + unsigned long *, unsigned long *);
> +
> +/*
> + * Platform data for child devices
> + */
> +struct cgeb_pdata {
> + struct cgeb_board_data *board;
> + int unit;
> +};
> +
> +#endif /* __CONGATEC_CGEB_H */
> --
> 1.7.2.5
I have found only one small issue - see below - and did test this
driver with an Atom and E6xx based Congatec CPU module.
Tested-by: Christian Gmeiner <christian.gmeiner@...il.com>
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