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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
429 lines
8.7 KiB
C
429 lines
8.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* CIMaX SP2/SP2HF (Atmel T90FJR) CI driver
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*
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* Copyright (C) 2014 Olli Salonen <olli.salonen@iki.fi>
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*
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* Heavily based on CIMax2(R) SP2 driver in conjunction with NetUp Dual
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* DVB-S2 CI card (cimax2) with following copyrights:
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*
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* Copyright (C) 2009 NetUP Inc.
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* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
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* Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
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*/
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#include "sp2_priv.h"
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static int sp2_read_i2c(struct sp2 *s, u8 reg, u8 *buf, int len)
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{
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int ret;
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struct i2c_client *client = s->client;
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struct i2c_adapter *adap = client->adapter;
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struct i2c_msg msg[] = {
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{
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.addr = client->addr,
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.flags = 0,
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.buf = ®,
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.len = 1
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}, {
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.addr = client->addr,
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.flags = I2C_M_RD,
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.buf = buf,
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.len = len
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}
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};
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ret = i2c_transfer(adap, msg, 2);
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if (ret != 2) {
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dev_err(&client->dev, "i2c read error, reg = 0x%02x, status = %d\n",
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reg, ret);
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if (ret < 0)
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return ret;
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else
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return -EIO;
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}
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dev_dbg(&s->client->dev, "addr=0x%04x, reg = 0x%02x, data = %02x\n",
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client->addr, reg, buf[0]);
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return 0;
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}
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static int sp2_write_i2c(struct sp2 *s, u8 reg, u8 *buf, int len)
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{
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int ret;
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u8 buffer[35];
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struct i2c_client *client = s->client;
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struct i2c_adapter *adap = client->adapter;
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struct i2c_msg msg = {
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.addr = client->addr,
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.flags = 0,
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.buf = &buffer[0],
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.len = len + 1
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};
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if ((len + 1) > sizeof(buffer)) {
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dev_err(&client->dev, "i2c wr reg=%02x: len=%d is too big!\n",
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reg, len);
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return -EINVAL;
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}
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buffer[0] = reg;
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memcpy(&buffer[1], buf, len);
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ret = i2c_transfer(adap, &msg, 1);
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if (ret != 1) {
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dev_err(&client->dev, "i2c write error, reg = 0x%02x, status = %d\n",
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reg, ret);
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if (ret < 0)
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return ret;
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else
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return -EIO;
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}
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dev_dbg(&s->client->dev, "addr=0x%04x, reg = 0x%02x, data = %*ph\n",
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client->addr, reg, len, buf);
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return 0;
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}
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static int sp2_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot, u8 acs,
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u8 read, int addr, u8 data)
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{
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struct sp2 *s = en50221->data;
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u8 store;
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int mem, ret;
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int (*ci_op_cam)(void*, u8, int, u8, int*) = s->ci_control;
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if (slot != 0)
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return -EINVAL;
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/*
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* change module access type between IO space and attribute memory
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* when needed
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*/
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if (s->module_access_type != acs) {
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ret = sp2_read_i2c(s, 0x00, &store, 1);
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if (ret)
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return ret;
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store &= ~(SP2_MOD_CTL_ACS1 | SP2_MOD_CTL_ACS0);
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store |= acs;
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ret = sp2_write_i2c(s, 0x00, &store, 1);
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if (ret)
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return ret;
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}
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s->module_access_type = acs;
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/* implementation of ci_op_cam is device specific */
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if (ci_op_cam) {
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ret = ci_op_cam(s->priv, read, addr, data, &mem);
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} else {
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dev_err(&s->client->dev, "callback not defined");
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return -EINVAL;
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}
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if (ret)
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return ret;
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dev_dbg(&s->client->dev, "%s: slot=%d, addr=0x%04x, %s, data=%x",
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(read) ? "read" : "write", slot, addr,
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(acs == SP2_CI_ATTR_ACS) ? "attr" : "io",
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(read) ? mem : data);
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if (read)
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return mem;
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else
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return 0;
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}
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int sp2_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
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int slot, int addr)
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{
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return sp2_ci_op_cam(en50221, slot, SP2_CI_ATTR_ACS,
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SP2_CI_RD, addr, 0);
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}
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int sp2_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
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int slot, int addr, u8 data)
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{
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return sp2_ci_op_cam(en50221, slot, SP2_CI_ATTR_ACS,
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SP2_CI_WR, addr, data);
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}
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int sp2_ci_read_cam_control(struct dvb_ca_en50221 *en50221,
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int slot, u8 addr)
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{
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return sp2_ci_op_cam(en50221, slot, SP2_CI_IO_ACS,
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SP2_CI_RD, addr, 0);
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}
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int sp2_ci_write_cam_control(struct dvb_ca_en50221 *en50221,
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int slot, u8 addr, u8 data)
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{
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return sp2_ci_op_cam(en50221, slot, SP2_CI_IO_ACS,
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SP2_CI_WR, addr, data);
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}
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int sp2_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
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{
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struct sp2 *s = en50221->data;
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u8 buf;
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int ret;
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dev_dbg(&s->client->dev, "slot: %d\n", slot);
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if (slot != 0)
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return -EINVAL;
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/* RST on */
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buf = SP2_MOD_CTL_RST;
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ret = sp2_write_i2c(s, 0x00, &buf, 1);
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if (ret)
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return ret;
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usleep_range(500, 600);
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/* RST off */
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buf = 0x00;
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ret = sp2_write_i2c(s, 0x00, &buf, 1);
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if (ret)
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return ret;
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msleep(1000);
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return 0;
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}
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int sp2_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
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{
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struct sp2 *s = en50221->data;
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dev_dbg(&s->client->dev, "slot:%d\n", slot);
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/* not implemented */
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return 0;
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}
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int sp2_ci_slot_ts_enable(struct dvb_ca_en50221 *en50221, int slot)
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{
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struct sp2 *s = en50221->data;
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u8 buf;
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dev_dbg(&s->client->dev, "slot:%d\n", slot);
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if (slot != 0)
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return -EINVAL;
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sp2_read_i2c(s, 0x00, &buf, 1);
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/* disable bypass and enable TS */
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buf |= (SP2_MOD_CTL_TSOEN | SP2_MOD_CTL_TSIEN);
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return sp2_write_i2c(s, 0, &buf, 1);
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}
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int sp2_ci_poll_slot_status(struct dvb_ca_en50221 *en50221,
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int slot, int open)
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{
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struct sp2 *s = en50221->data;
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u8 buf[2];
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int ret;
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dev_dbg(&s->client->dev, "slot:%d open:%d\n", slot, open);
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/*
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* CAM module INSERT/REMOVE processing. Slow operation because of i2c
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* transfers. Throttle read to one per sec.
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*/
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if (time_after(jiffies, s->next_status_checked_time)) {
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ret = sp2_read_i2c(s, 0x00, buf, 1);
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s->next_status_checked_time = jiffies + msecs_to_jiffies(1000);
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if (ret)
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return 0;
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if (buf[0] & SP2_MOD_CTL_DET)
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s->status = DVB_CA_EN50221_POLL_CAM_PRESENT |
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DVB_CA_EN50221_POLL_CAM_READY;
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else
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s->status = 0;
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}
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return s->status;
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}
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static int sp2_init(struct sp2 *s)
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{
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int ret = 0;
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u8 buf;
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u8 cimax_init[34] = {
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0x00, /* module A control*/
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0x00, /* auto select mask high A */
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0x00, /* auto select mask low A */
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0x00, /* auto select pattern high A */
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0x00, /* auto select pattern low A */
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0x44, /* memory access time A, 600 ns */
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0x00, /* invert input A */
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0x00, /* RFU */
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0x00, /* RFU */
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0x00, /* module B control*/
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0x00, /* auto select mask high B */
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0x00, /* auto select mask low B */
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0x00, /* auto select pattern high B */
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0x00, /* auto select pattern low B */
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0x44, /* memory access time B, 600 ns */
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0x00, /* invert input B */
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0x00, /* RFU */
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0x00, /* RFU */
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0x00, /* auto select mask high Ext */
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0x00, /* auto select mask low Ext */
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0x00, /* auto select pattern high Ext */
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0x00, /* auto select pattern low Ext */
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0x00, /* RFU */
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0x02, /* destination - module A */
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0x01, /* power control reg, VCC power on */
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0x00, /* RFU */
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0x00, /* int status read only */
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0x00, /* Interrupt Mask Register */
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0x05, /* EXTINT=active-high, INT=push-pull */
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0x00, /* USCG1 */
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0x04, /* ack active low */
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0x00, /* LOCK = 0 */
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0x22, /* unknown */
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0x00, /* synchronization? */
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};
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dev_dbg(&s->client->dev, "\n");
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s->ca.owner = THIS_MODULE;
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s->ca.read_attribute_mem = sp2_ci_read_attribute_mem;
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s->ca.write_attribute_mem = sp2_ci_write_attribute_mem;
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s->ca.read_cam_control = sp2_ci_read_cam_control;
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s->ca.write_cam_control = sp2_ci_write_cam_control;
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s->ca.slot_reset = sp2_ci_slot_reset;
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s->ca.slot_shutdown = sp2_ci_slot_shutdown;
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s->ca.slot_ts_enable = sp2_ci_slot_ts_enable;
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s->ca.poll_slot_status = sp2_ci_poll_slot_status;
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s->ca.data = s;
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s->module_access_type = 0;
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/* initialize all regs */
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ret = sp2_write_i2c(s, 0x00, &cimax_init[0], 34);
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if (ret)
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goto err;
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/* lock registers */
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buf = 1;
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ret = sp2_write_i2c(s, 0x1f, &buf, 1);
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if (ret)
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goto err;
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/* power on slots */
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ret = sp2_write_i2c(s, 0x18, &buf, 1);
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if (ret)
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goto err;
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ret = dvb_ca_en50221_init(s->dvb_adap, &s->ca, 0, 1);
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if (ret)
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goto err;
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return 0;
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err:
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dev_dbg(&s->client->dev, "init failed=%d\n", ret);
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return ret;
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}
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static int sp2_exit(struct i2c_client *client)
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{
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struct sp2 *s;
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dev_dbg(&client->dev, "\n");
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if (!client)
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return 0;
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s = i2c_get_clientdata(client);
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if (!s)
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return 0;
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if (!s->ca.data)
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return 0;
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dvb_ca_en50221_release(&s->ca);
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return 0;
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}
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static int sp2_probe(struct i2c_client *client)
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{
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struct sp2_config *cfg = client->dev.platform_data;
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struct sp2 *s;
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int ret;
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dev_dbg(&client->dev, "\n");
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s = kzalloc_obj(*s);
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if (!s) {
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ret = -ENOMEM;
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goto err;
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}
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s->client = client;
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s->dvb_adap = cfg->dvb_adap;
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s->priv = cfg->priv;
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s->ci_control = cfg->ci_control;
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i2c_set_clientdata(client, s);
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ret = sp2_init(s);
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if (ret)
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goto err;
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dev_info(&s->client->dev, "CIMaX SP2 successfully attached\n");
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return 0;
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err:
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dev_dbg(&client->dev, "init failed=%d\n", ret);
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kfree(s);
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return ret;
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}
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static void sp2_remove(struct i2c_client *client)
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{
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struct sp2 *s = i2c_get_clientdata(client);
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dev_dbg(&client->dev, "\n");
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sp2_exit(client);
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kfree(s);
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}
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static const struct i2c_device_id sp2_id[] = {
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{ "sp2" },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, sp2_id);
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static struct i2c_driver sp2_driver = {
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.driver = {
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.name = "sp2",
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},
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.probe = sp2_probe,
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.remove = sp2_remove,
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.id_table = sp2_id,
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};
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module_i2c_driver(sp2_driver);
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MODULE_DESCRIPTION("CIMaX SP2/HF CI driver");
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MODULE_AUTHOR("Olli Salonen <olli.salonen@iki.fi>");
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MODULE_LICENSE("GPL");
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