Release 4.11 drivers/media/mmc/siano/smssdio.c
/*
* smssdio.c - Siano 1xxx SDIO interface driver
*
* Copyright 2008 Pierre Ossman
*
* Based on code by Siano Mobile Silicon, Inc.,
* Copyright (C) 2006-2008, Uri Shkolnik
*
* 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 hardware is a bit odd in that all transfers should be done
* to/from the SMSSDIO_DATA register, yet the "increase address" bit
* always needs to be set.
*
* Also, buffers from the card are always aligned to 128 byte
* boundaries.
*/
/*
* General cleanup notes:
*
* - only typedefs should be name *_t
*
* - use ERR_PTR and friends for smscore_register_device()
*
* - smscore_getbuffer should zero fields
*
* Fix stop command
*/
#include "smscoreapi.h"
#include <linux/moduleparam.h>
#include <linux/slab.h>
#include <linux/firmware.h>
#include <linux/delay.h>
#include <linux/mmc/card.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/module.h>
#include "sms-cards.h"
#include "smsendian.h"
/* Registers */
#define SMSSDIO_DATA 0x00
#define SMSSDIO_INT 0x04
#define SMSSDIO_BLOCK_SIZE 128
static const struct sdio_device_id smssdio_ids[] = {
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, SDIO_DEVICE_ID_SIANO_STELLAR),
.driver_data = SMS1XXX_BOARD_SIANO_STELLAR},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, SDIO_DEVICE_ID_SIANO_NOVA_A0),
.driver_data = SMS1XXX_BOARD_SIANO_NOVA_A},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, SDIO_DEVICE_ID_SIANO_NOVA_B0),
.driver_data = SMS1XXX_BOARD_SIANO_NOVA_B},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, SDIO_DEVICE_ID_SIANO_VEGA_A0),
.driver_data = SMS1XXX_BOARD_SIANO_VEGA},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, SDIO_DEVICE_ID_SIANO_VENICE),
.driver_data = SMS1XXX_BOARD_SIANO_VEGA},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, 0x302),
.driver_data = SMS1XXX_BOARD_SIANO_MING},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, 0x500),
.driver_data = SMS1XXX_BOARD_SIANO_PELE},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, 0x600),
.driver_data = SMS1XXX_BOARD_SIANO_RIO},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, 0x700),
.driver_data = SMS1XXX_BOARD_SIANO_DENVER_2160},
{SDIO_DEVICE(SDIO_VENDOR_ID_SIANO, 0x800),
.driver_data = SMS1XXX_BOARD_SIANO_DENVER_1530},
{ /* end: all zeroes */ },
};
MODULE_DEVICE_TABLE(sdio, smssdio_ids);
struct smssdio_device {
struct sdio_func *func;
struct smscore_device_t *coredev;
struct smscore_buffer_t *split_cb;
};
/*******************************************************************/
/* Siano core callbacks */
/*******************************************************************/
static int smssdio_sendrequest(void *context, void *buffer, size_t size)
{
int ret = 0;
struct smssdio_device *smsdev;
smsdev = context;
sdio_claim_host(smsdev->func);
smsendian_handle_tx_message((struct sms_msg_data *) buffer);
while (size >= smsdev->func->cur_blksize) {
ret = sdio_memcpy_toio(smsdev->func, SMSSDIO_DATA,
buffer, smsdev->func->cur_blksize);
if (ret)
goto out;
buffer += smsdev->func->cur_blksize;
size -= smsdev->func->cur_blksize;
}
if (size) {
ret = sdio_memcpy_toio(smsdev->func, SMSSDIO_DATA,
buffer, size);
}
out:
sdio_release_host(smsdev->func);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Uri Shkolnik | 116 | 85.93% | 1 | 20.00% |
| Mauro Carvalho Chehab | 10 | 7.41% | 2 | 40.00% |
| Udi Atar | 7 | 5.19% | 1 | 20.00% |
| Márton Németh | 2 | 1.48% | 1 | 20.00% |
| Total | 135 | 100.00% | 5 | 100.00% |
/*******************************************************************/
/* SDIO callbacks */
/*******************************************************************/
static void smssdio_interrupt(struct sdio_func *func)
{
int ret;
struct smssdio_device *smsdev;
struct smscore_buffer_t *cb;
struct sms_msg_hdr *hdr;
size_t size;
smsdev = sdio_get_drvdata(func);
/*
* The interrupt register has no defined meaning. It is just
* a way of turning of the level triggered interrupt.
*/
(void)sdio_readb(func, SMSSDIO_INT, &ret);
if (ret) {
pr_err("Unable to read interrupt register!\n");
return;
}
if (smsdev->split_cb == NULL) {
cb = smscore_getbuffer(smsdev->coredev);
if (!cb) {
pr_err("Unable to allocate data buffer!\n");
return;
}
ret = sdio_memcpy_fromio(smsdev->func,
cb->p,
SMSSDIO_DATA,
SMSSDIO_BLOCK_SIZE);
if (ret) {
pr_err("Error %d reading initial block!\n", ret);
return;
}
hdr = cb->p;
if (hdr->msg_flags & MSG_HDR_FLAG_SPLIT_MSG) {
smsdev->split_cb = cb;
return;
}
if (hdr->msg_length > smsdev->func->cur_blksize)
size = hdr->msg_length - smsdev->func->cur_blksize;
else
size = 0;
} else {
cb = smsdev->split_cb;
hdr = cb->p;
size = hdr->msg_length - sizeof(struct sms_msg_hdr);
smsdev->split_cb = NULL;
}
if (size) {
void *buffer;
buffer = cb->p + (hdr->msg_length - size);
size = ALIGN(size, SMSSDIO_BLOCK_SIZE);
BUG_ON(smsdev->func->cur_blksize != SMSSDIO_BLOCK_SIZE);
/*
* First attempt to transfer all of it in one go...
*/
ret = sdio_memcpy_fromio(smsdev->func,
buffer,
SMSSDIO_DATA,
size);
if (ret && ret != -EINVAL) {
smscore_putbuffer(smsdev->coredev, cb);
pr_err("Error %d reading data from card!\n", ret);
return;
}
/*
* ..then fall back to one block at a time if that is
* not possible...
*
* (we have to do this manually because of the
* problem with the "increase address" bit)
*/
if (ret == -EINVAL) {
while (size) {
ret = sdio_memcpy_fromio(smsdev->func,
buffer, SMSSDIO_DATA,
smsdev->func->cur_blksize);
if (ret) {
smscore_putbuffer(smsdev->coredev, cb);
pr_err("Error %d reading data from card!\n",
ret);
return;
}
buffer += smsdev->func->cur_blksize;
if (size > smsdev->func->cur_blksize)
size -= smsdev->func->cur_blksize;
else
size = 0;
}
}
}
cb->size = hdr->msg_length;
cb->offset = 0;
smsendian_handle_rx_message((struct sms_msg_data *) cb->p);
smscore_onresponse(smsdev->coredev, cb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Uri Shkolnik | 356 | 83.76% | 1 | 16.67% |
| Udi Atar | 40 | 9.41% | 1 | 16.67% |
| Mauro Carvalho Chehab | 26 | 6.12% | 3 | 50.00% |
| Hans Verkuil | 3 | 0.71% | 1 | 16.67% |
| Total | 425 | 100.00% | 6 | 100.00% |
static int smssdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
int ret;
int board_id;
struct smssdio_device *smsdev;
struct smsdevice_params_t params;
board_id = id->driver_data;
smsdev = kzalloc(sizeof(struct smssdio_device), GFP_KERNEL);
if (!smsdev)
return -ENOMEM;
smsdev->func = func;
memset(¶ms, 0, sizeof(struct smsdevice_params_t));
params.device = &func->dev;
params.buffer_size = 0x5000; /* ?? */
params.num_buffers = 22; /* ?? */
params.context = smsdev;
snprintf(params.devpath, sizeof(params.devpath),
"sdio\\%s", sdio_func_id(func));
params.sendrequest_handler = smssdio_sendrequest;
params.device_type = sms_get_board(board_id)->type;
if (params.device_type != SMS_STELLAR)
params.flags |= SMS_DEVICE_FAMILY2;
else {
/*
* FIXME: Stellar needs special handling...
*/
ret = -ENODEV;
goto free;
}
ret = smscore_register_device(¶ms, &smsdev->coredev, NULL);
if (ret < 0)
goto free;
smscore_set_board_id(smsdev->coredev, board_id);
sdio_claim_host(func);
ret = sdio_enable_func(func);
if (ret)
goto release;
ret = sdio_set_block_size(func, SMSSDIO_BLOCK_SIZE);
if (ret)
goto disable;
ret = sdio_claim_irq(func, smssdio_interrupt);
if (ret)
goto disable;
sdio_set_drvdata(func, smsdev);
sdio_release_host(func);
ret = smscore_start_device(smsdev->coredev);
if (ret < 0)
goto reclaim;
return 0;
reclaim:
sdio_claim_host(func);
sdio_release_irq(func);
disable:
sdio_disable_func(func);
release:
sdio_release_host(func);
smscore_unregister_device(smsdev->coredev);
free:
kfree(smsdev);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Uri Shkolnik | 330 | 99.10% | 1 | 33.33% |
| Mauro Carvalho Chehab | 2 | 0.60% | 1 | 33.33% |
| Udi Atar | 1 | 0.30% | 1 | 33.33% |
| Total | 333 | 100.00% | 3 | 100.00% |
static void smssdio_remove(struct sdio_func *func)
{
struct smssdio_device *smsdev;
smsdev = sdio_get_drvdata(func);
/* FIXME: racy! */
if (smsdev->split_cb)
smscore_putbuffer(smsdev->coredev, smsdev->split_cb);
smscore_unregister_device(smsdev->coredev);
sdio_claim_host(func);
sdio_release_irq(func);
sdio_disable_func(func);
sdio_release_host(func);
kfree(smsdev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Uri Shkolnik | 73 | 100.00% | 1 | 100.00% |
| Total | 73 | 100.00% | 1 | 100.00% |
static struct sdio_driver smssdio_driver = {
.name = "smssdio",
.id_table = smssdio_ids,
.probe = smssdio_probe,
.remove = smssdio_remove,
};
/*******************************************************************/
/* Module functions */
/*******************************************************************/
static int __init smssdio_module_init(void)
{
int ret = 0;
printk(KERN_INFO "smssdio: Siano SMS1xxx SDIO driver\n");
printk(KERN_INFO "smssdio: Copyright Pierre Ossman\n");
ret = sdio_register_driver(&smssdio_driver);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Uri Shkolnik | 35 | 94.59% | 2 | 66.67% |
| Márton Németh | 2 | 5.41% | 1 | 33.33% |
| Total | 37 | 100.00% | 3 | 100.00% |
static void __exit smssdio_module_exit(void)
{
sdio_unregister_driver(&smssdio_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Uri Shkolnik | 13 | 86.67% | 2 | 66.67% |
| Márton Németh | 2 | 13.33% | 1 | 33.33% |
| Total | 15 | 100.00% | 3 | 100.00% |
module_init(smssdio_module_init);
module_exit(smssdio_module_exit);
MODULE_DESCRIPTION("Siano SMS1xxx SDIO driver");
MODULE_AUTHOR("Pierre Ossman");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Uri Shkolnik | 1126 | 86.15% | 2 | 14.29% |
| Mauro Carvalho Chehab | 114 | 8.72% | 6 | 42.86% |
| Udi Atar | 52 | 3.98% | 1 | 7.14% |
| Márton Németh | 6 | 0.46% | 2 | 14.29% |
| Hans Verkuil | 3 | 0.23% | 1 | 7.14% |
| Tejun Heo | 3 | 0.23% | 1 | 7.14% |
| Paul Gortmaker | 3 | 0.23% | 1 | 7.14% |
| Greg Kroah-Hartman | | 0.00% | 0 | 0.00% |
| Total | 1307 | 100.00% | 14 | 100.00% |
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