mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 12:05:10 +07:00
0df289a209
The DVB API was originally defined using typedefs. This is against
Kernel CodingStyle, and there's no good usage here. While we can't
remove its usage on userspace, we can avoid its usage in Kernelspace.
So, let's do it.
This patch was generated by this shell script:
for j in $(grep typedef include/uapi/linux/dvb/frontend.h |cut -d' ' -f 3); do for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f); do sed "s,${j}_t,enum $j," <$i >a && mv a $i; done; done
While here, make CodingStyle fixes on the affected lines.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> # for drivers/media/firewire/*
630 lines
15 KiB
C
630 lines
15 KiB
C
/*
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Driver for the Spase sp887x demodulator
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*/
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/*
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* This driver needs external firmware. Please use the command
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* "<kerneldir>/Documentation/dvb/get_dvb_firmware sp887x" to
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* download/extract it, and then copy it to /usr/lib/hotplug/firmware
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* or /lib/firmware (depending on configuration of firmware hotplug).
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*/
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#define SP887X_DEFAULT_FIRMWARE "dvb-fe-sp887x.fw"
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/firmware.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include "dvb_frontend.h"
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#include "sp887x.h"
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struct sp887x_state {
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struct i2c_adapter* i2c;
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const struct sp887x_config* config;
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struct dvb_frontend frontend;
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/* demodulator private data */
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u8 initialised:1;
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};
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static int debug;
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#define dprintk(args...) \
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do { \
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if (debug) printk(KERN_DEBUG "sp887x: " args); \
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} while (0)
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static int i2c_writebytes (struct sp887x_state* state, u8 *buf, u8 len)
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{
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struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = len };
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int err;
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if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
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printk ("%s: i2c write error (addr %02x, err == %i)\n",
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__func__, state->config->demod_address, err);
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return -EREMOTEIO;
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}
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return 0;
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}
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static int sp887x_writereg (struct sp887x_state* state, u16 reg, u16 data)
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{
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u8 b0 [] = { reg >> 8 , reg & 0xff, data >> 8, data & 0xff };
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struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 4 };
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int ret;
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if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) {
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/**
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* in case of soft reset we ignore ACK errors...
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*/
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if (!(reg == 0xf1a && data == 0x000 &&
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(ret == -EREMOTEIO || ret == -EFAULT)))
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{
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printk("%s: writereg error "
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"(reg %03x, data %03x, ret == %i)\n",
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__func__, reg & 0xffff, data & 0xffff, ret);
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return ret;
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}
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}
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return 0;
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}
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static int sp887x_readreg (struct sp887x_state* state, u16 reg)
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{
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u8 b0 [] = { reg >> 8 , reg & 0xff };
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u8 b1 [2];
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int ret;
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struct i2c_msg msg[] = {{ .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 2 },
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{ .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 2 }};
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if ((ret = i2c_transfer(state->i2c, msg, 2)) != 2) {
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printk("%s: readreg error (ret == %i)\n", __func__, ret);
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return -1;
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}
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return (((b1[0] << 8) | b1[1]) & 0xfff);
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}
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static void sp887x_microcontroller_stop (struct sp887x_state* state)
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{
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dprintk("%s\n", __func__);
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sp887x_writereg(state, 0xf08, 0x000);
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sp887x_writereg(state, 0xf09, 0x000);
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/* microcontroller STOP */
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sp887x_writereg(state, 0xf00, 0x000);
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}
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static void sp887x_microcontroller_start (struct sp887x_state* state)
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{
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dprintk("%s\n", __func__);
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sp887x_writereg(state, 0xf08, 0x000);
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sp887x_writereg(state, 0xf09, 0x000);
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/* microcontroller START */
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sp887x_writereg(state, 0xf00, 0x001);
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}
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static void sp887x_setup_agc (struct sp887x_state* state)
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{
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/* setup AGC parameters */
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dprintk("%s\n", __func__);
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sp887x_writereg(state, 0x33c, 0x054);
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sp887x_writereg(state, 0x33b, 0x04c);
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sp887x_writereg(state, 0x328, 0x000);
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sp887x_writereg(state, 0x327, 0x005);
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sp887x_writereg(state, 0x326, 0x001);
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sp887x_writereg(state, 0x325, 0x001);
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sp887x_writereg(state, 0x324, 0x001);
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sp887x_writereg(state, 0x318, 0x050);
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sp887x_writereg(state, 0x317, 0x3fe);
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sp887x_writereg(state, 0x316, 0x001);
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sp887x_writereg(state, 0x313, 0x005);
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sp887x_writereg(state, 0x312, 0x002);
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sp887x_writereg(state, 0x306, 0x000);
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sp887x_writereg(state, 0x303, 0x000);
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}
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#define BLOCKSIZE 30
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#define FW_SIZE 0x4000
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/**
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* load firmware and setup MPEG interface...
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*/
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static int sp887x_initial_setup (struct dvb_frontend* fe, const struct firmware *fw)
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{
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struct sp887x_state* state = fe->demodulator_priv;
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u8 buf [BLOCKSIZE+2];
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int i;
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int fw_size = fw->size;
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const unsigned char *mem = fw->data;
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dprintk("%s\n", __func__);
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/* ignore the first 10 bytes, then we expect 0x4000 bytes of firmware */
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if (fw_size < FW_SIZE+10)
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return -ENODEV;
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mem = fw->data + 10;
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/* soft reset */
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sp887x_writereg(state, 0xf1a, 0x000);
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sp887x_microcontroller_stop (state);
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printk ("%s: firmware upload... ", __func__);
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/* setup write pointer to -1 (end of memory) */
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/* bit 0x8000 in address is set to enable 13bit mode */
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sp887x_writereg(state, 0x8f08, 0x1fff);
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/* dummy write (wrap around to start of memory) */
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sp887x_writereg(state, 0x8f0a, 0x0000);
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for (i = 0; i < FW_SIZE; i += BLOCKSIZE) {
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int c = BLOCKSIZE;
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int err;
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if (i+c > FW_SIZE)
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c = FW_SIZE - i;
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/* bit 0x8000 in address is set to enable 13bit mode */
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/* bit 0x4000 enables multibyte read/write transfers */
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/* write register is 0xf0a */
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buf[0] = 0xcf;
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buf[1] = 0x0a;
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memcpy(&buf[2], mem + i, c);
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if ((err = i2c_writebytes (state, buf, c+2)) < 0) {
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printk ("failed.\n");
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printk ("%s: i2c error (err == %i)\n", __func__, err);
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return err;
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}
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}
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/* don't write RS bytes between packets */
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sp887x_writereg(state, 0xc13, 0x001);
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/* suppress clock if (!data_valid) */
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sp887x_writereg(state, 0xc14, 0x000);
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/* setup MPEG interface... */
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sp887x_writereg(state, 0xc1a, 0x872);
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sp887x_writereg(state, 0xc1b, 0x001);
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sp887x_writereg(state, 0xc1c, 0x000); /* parallel mode (serial mode == 1) */
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sp887x_writereg(state, 0xc1a, 0x871);
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/* ADC mode, 2 for MT8872, 3 for SP8870/SP8871 */
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sp887x_writereg(state, 0x301, 0x002);
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sp887x_setup_agc(state);
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/* bit 0x010: enable data valid signal */
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sp887x_writereg(state, 0xd00, 0x010);
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sp887x_writereg(state, 0x0d1, 0x000);
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return 0;
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};
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static int configure_reg0xc05(struct dtv_frontend_properties *p, u16 *reg0xc05)
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{
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int known_parameters = 1;
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*reg0xc05 = 0x000;
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switch (p->modulation) {
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case QPSK:
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break;
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case QAM_16:
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*reg0xc05 |= (1 << 10);
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break;
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case QAM_64:
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*reg0xc05 |= (2 << 10);
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break;
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case QAM_AUTO:
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known_parameters = 0;
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break;
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default:
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return -EINVAL;
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}
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switch (p->hierarchy) {
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case HIERARCHY_NONE:
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break;
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case HIERARCHY_1:
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*reg0xc05 |= (1 << 7);
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break;
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case HIERARCHY_2:
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*reg0xc05 |= (2 << 7);
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break;
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case HIERARCHY_4:
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*reg0xc05 |= (3 << 7);
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break;
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case HIERARCHY_AUTO:
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known_parameters = 0;
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break;
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default:
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return -EINVAL;
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}
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switch (p->code_rate_HP) {
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case FEC_1_2:
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break;
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case FEC_2_3:
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*reg0xc05 |= (1 << 3);
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break;
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case FEC_3_4:
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*reg0xc05 |= (2 << 3);
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break;
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case FEC_5_6:
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*reg0xc05 |= (3 << 3);
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break;
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case FEC_7_8:
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*reg0xc05 |= (4 << 3);
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break;
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case FEC_AUTO:
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known_parameters = 0;
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break;
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default:
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return -EINVAL;
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}
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if (known_parameters)
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*reg0xc05 |= (2 << 1); /* use specified parameters */
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else
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*reg0xc05 |= (1 << 1); /* enable autoprobing */
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return 0;
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}
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/**
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* estimates division of two 24bit numbers,
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* derived from the ves1820/stv0299 driver code
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*/
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static void divide (int n, int d, int *quotient_i, int *quotient_f)
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{
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unsigned int q, r;
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r = (n % d) << 8;
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q = (r / d);
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if (quotient_i)
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*quotient_i = q;
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if (quotient_f) {
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r = (r % d) << 8;
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q = (q << 8) | (r / d);
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r = (r % d) << 8;
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*quotient_f = (q << 8) | (r / d);
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}
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}
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static void sp887x_correct_offsets (struct sp887x_state* state,
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struct dtv_frontend_properties *p,
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int actual_freq)
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{
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static const u32 srate_correction [] = { 1879617, 4544878, 8098561 };
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int bw_index;
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int freq_offset = actual_freq - p->frequency;
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int sysclock = 61003; //[kHz]
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int ifreq = 36000000;
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int freq;
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int frequency_shift;
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switch (p->bandwidth_hz) {
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default:
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case 8000000:
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bw_index = 0;
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break;
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case 7000000:
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bw_index = 1;
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break;
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case 6000000:
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bw_index = 2;
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break;
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}
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if (p->inversion == INVERSION_ON)
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freq = ifreq - freq_offset;
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else
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freq = ifreq + freq_offset;
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divide(freq / 333, sysclock, NULL, &frequency_shift);
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if (p->inversion == INVERSION_ON)
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frequency_shift = -frequency_shift;
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/* sample rate correction */
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sp887x_writereg(state, 0x319, srate_correction[bw_index] >> 12);
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sp887x_writereg(state, 0x31a, srate_correction[bw_index] & 0xfff);
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/* carrier offset correction */
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sp887x_writereg(state, 0x309, frequency_shift >> 12);
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sp887x_writereg(state, 0x30a, frequency_shift & 0xfff);
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}
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static int sp887x_setup_frontend_parameters(struct dvb_frontend *fe)
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{
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struct dtv_frontend_properties *p = &fe->dtv_property_cache;
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struct sp887x_state* state = fe->demodulator_priv;
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unsigned actual_freq;
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int err;
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u16 val, reg0xc05;
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if (p->bandwidth_hz != 8000000 &&
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p->bandwidth_hz != 7000000 &&
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p->bandwidth_hz != 6000000)
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return -EINVAL;
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if ((err = configure_reg0xc05(p, ®0xc05)))
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return err;
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sp887x_microcontroller_stop(state);
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/* setup the PLL */
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if (fe->ops.tuner_ops.set_params) {
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fe->ops.tuner_ops.set_params(fe);
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if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
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}
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if (fe->ops.tuner_ops.get_frequency) {
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fe->ops.tuner_ops.get_frequency(fe, &actual_freq);
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if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
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} else {
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actual_freq = p->frequency;
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}
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/* read status reg in order to clear <pending irqs */
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sp887x_readreg(state, 0x200);
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sp887x_correct_offsets(state, p, actual_freq);
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/* filter for 6/7/8 Mhz channel */
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if (p->bandwidth_hz == 6000000)
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val = 2;
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else if (p->bandwidth_hz == 7000000)
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val = 1;
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else
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val = 0;
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sp887x_writereg(state, 0x311, val);
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/* scan order: 2k first = 0, 8k first = 1 */
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if (p->transmission_mode == TRANSMISSION_MODE_2K)
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sp887x_writereg(state, 0x338, 0x000);
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else
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sp887x_writereg(state, 0x338, 0x001);
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sp887x_writereg(state, 0xc05, reg0xc05);
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if (p->bandwidth_hz == 6000000)
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val = 2 << 3;
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else if (p->bandwidth_hz == 7000000)
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val = 3 << 3;
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else
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val = 0 << 3;
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/* enable OFDM and SAW bits as lock indicators in sync register 0xf17,
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* optimize algorithm for given bandwidth...
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*/
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sp887x_writereg(state, 0xf14, 0x160 | val);
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sp887x_writereg(state, 0xf15, 0x000);
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sp887x_microcontroller_start(state);
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return 0;
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}
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static int sp887x_read_status(struct dvb_frontend *fe, enum fe_status *status)
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{
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struct sp887x_state* state = fe->demodulator_priv;
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u16 snr12 = sp887x_readreg(state, 0xf16);
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u16 sync0x200 = sp887x_readreg(state, 0x200);
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u16 sync0xf17 = sp887x_readreg(state, 0xf17);
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*status = 0;
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if (snr12 > 0x00f)
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*status |= FE_HAS_SIGNAL;
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//if (sync0x200 & 0x004)
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// *status |= FE_HAS_SYNC | FE_HAS_CARRIER;
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//if (sync0x200 & 0x008)
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// *status |= FE_HAS_VITERBI;
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if ((sync0xf17 & 0x00f) == 0x002) {
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*status |= FE_HAS_LOCK;
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*status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_CARRIER;
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}
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if (sync0x200 & 0x001) { /* tuner adjustment requested...*/
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int steps = (sync0x200 >> 4) & 0x00f;
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if (steps & 0x008)
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steps = -steps;
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dprintk("sp887x: implement tuner adjustment (%+i steps)!!\n",
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steps);
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}
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return 0;
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}
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static int sp887x_read_ber(struct dvb_frontend* fe, u32* ber)
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{
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struct sp887x_state* state = fe->demodulator_priv;
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*ber = (sp887x_readreg(state, 0xc08) & 0x3f) |
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(sp887x_readreg(state, 0xc07) << 6);
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sp887x_writereg(state, 0xc08, 0x000);
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sp887x_writereg(state, 0xc07, 0x000);
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if (*ber >= 0x3fff0)
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*ber = ~0;
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return 0;
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}
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static int sp887x_read_signal_strength(struct dvb_frontend* fe, u16* strength)
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{
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struct sp887x_state* state = fe->demodulator_priv;
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u16 snr12 = sp887x_readreg(state, 0xf16);
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u32 signal = 3 * (snr12 << 4);
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*strength = (signal < 0xffff) ? signal : 0xffff;
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return 0;
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}
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static int sp887x_read_snr(struct dvb_frontend* fe, u16* snr)
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{
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struct sp887x_state* state = fe->demodulator_priv;
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u16 snr12 = sp887x_readreg(state, 0xf16);
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*snr = (snr12 << 4) | (snr12 >> 8);
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return 0;
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}
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static int sp887x_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
|
|
{
|
|
struct sp887x_state* state = fe->demodulator_priv;
|
|
|
|
*ucblocks = sp887x_readreg(state, 0xc0c);
|
|
if (*ucblocks == 0xfff)
|
|
*ucblocks = ~0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sp887x_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
|
|
{
|
|
struct sp887x_state* state = fe->demodulator_priv;
|
|
|
|
if (enable) {
|
|
return sp887x_writereg(state, 0x206, 0x001);
|
|
} else {
|
|
return sp887x_writereg(state, 0x206, 0x000);
|
|
}
|
|
}
|
|
|
|
static int sp887x_sleep(struct dvb_frontend* fe)
|
|
{
|
|
struct sp887x_state* state = fe->demodulator_priv;
|
|
|
|
/* tristate TS output and disable interface pins */
|
|
sp887x_writereg(state, 0xc18, 0x000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sp887x_init(struct dvb_frontend* fe)
|
|
{
|
|
struct sp887x_state* state = fe->demodulator_priv;
|
|
const struct firmware *fw = NULL;
|
|
int ret;
|
|
|
|
if (!state->initialised) {
|
|
/* request the firmware, this will block until someone uploads it */
|
|
printk("sp887x: waiting for firmware upload (%s)...\n", SP887X_DEFAULT_FIRMWARE);
|
|
ret = state->config->request_firmware(fe, &fw, SP887X_DEFAULT_FIRMWARE);
|
|
if (ret) {
|
|
printk("sp887x: no firmware upload (timeout or file not found?)\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = sp887x_initial_setup(fe, fw);
|
|
release_firmware(fw);
|
|
if (ret) {
|
|
printk("sp887x: writing firmware to device failed\n");
|
|
return ret;
|
|
}
|
|
printk("sp887x: firmware upload complete\n");
|
|
state->initialised = 1;
|
|
}
|
|
|
|
/* enable TS output and interface pins */
|
|
sp887x_writereg(state, 0xc18, 0x00d);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sp887x_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* fesettings)
|
|
{
|
|
fesettings->min_delay_ms = 350;
|
|
fesettings->step_size = 166666*2;
|
|
fesettings->max_drift = (166666*2)+1;
|
|
return 0;
|
|
}
|
|
|
|
static void sp887x_release(struct dvb_frontend* fe)
|
|
{
|
|
struct sp887x_state* state = fe->demodulator_priv;
|
|
kfree(state);
|
|
}
|
|
|
|
static struct dvb_frontend_ops sp887x_ops;
|
|
|
|
struct dvb_frontend* sp887x_attach(const struct sp887x_config* config,
|
|
struct i2c_adapter* i2c)
|
|
{
|
|
struct sp887x_state* state = NULL;
|
|
|
|
/* allocate memory for the internal state */
|
|
state = kzalloc(sizeof(struct sp887x_state), GFP_KERNEL);
|
|
if (state == NULL) goto error;
|
|
|
|
/* setup the state */
|
|
state->config = config;
|
|
state->i2c = i2c;
|
|
state->initialised = 0;
|
|
|
|
/* check if the demod is there */
|
|
if (sp887x_readreg(state, 0x0200) < 0) goto error;
|
|
|
|
/* create dvb_frontend */
|
|
memcpy(&state->frontend.ops, &sp887x_ops, sizeof(struct dvb_frontend_ops));
|
|
state->frontend.demodulator_priv = state;
|
|
return &state->frontend;
|
|
|
|
error:
|
|
kfree(state);
|
|
return NULL;
|
|
}
|
|
|
|
static struct dvb_frontend_ops sp887x_ops = {
|
|
.delsys = { SYS_DVBT },
|
|
.info = {
|
|
.name = "Spase SP887x DVB-T",
|
|
.frequency_min = 50500000,
|
|
.frequency_max = 858000000,
|
|
.frequency_stepsize = 166666,
|
|
.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
|
|
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
|
|
FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
|
|
FE_CAN_RECOVER
|
|
},
|
|
|
|
.release = sp887x_release,
|
|
|
|
.init = sp887x_init,
|
|
.sleep = sp887x_sleep,
|
|
.i2c_gate_ctrl = sp887x_i2c_gate_ctrl,
|
|
|
|
.set_frontend = sp887x_setup_frontend_parameters,
|
|
.get_tune_settings = sp887x_get_tune_settings,
|
|
|
|
.read_status = sp887x_read_status,
|
|
.read_ber = sp887x_read_ber,
|
|
.read_signal_strength = sp887x_read_signal_strength,
|
|
.read_snr = sp887x_read_snr,
|
|
.read_ucblocks = sp887x_read_ucblocks,
|
|
};
|
|
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
|
|
|
|
MODULE_DESCRIPTION("Spase sp887x DVB-T demodulator driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
EXPORT_SYMBOL(sp887x_attach);
|