/*
* Abilis Systems Single DVB-T Receiver
* Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
+ * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
*
* 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
#include <linux/kernel.h>
#include "as102_drv.h"
#elif defined(WIN32)
- #if defined(__BUILDMACHINE__) && (__BUILDMACHINE__ == WinDDK) /* win32 ddk implementation */
+ #if defined(__BUILDMACHINE__) && (__BUILDMACHINE__ == WinDDK)
+ /* win32 ddk implementation */
#include "wdm.h"
#include "Device.h"
#include "endian_mgmt.h" /* FIXME */
*/
int as10x_cmd_turn_on(as10x_handle_t *phandle)
{
- int error;
- struct as10x_cmd_t *pcmd, *prsp;
+ int error;
+ struct as10x_cmd_t *pcmd, *prsp;
- ENTER();
+ ENTER();
- pcmd = phandle->cmd;
- prsp = phandle->rsp;
+ pcmd = phandle->cmd;
+ prsp = phandle->rsp;
- /* prepare command */
- as10x_cmd_build(pcmd,(++phandle->cmd_xid), sizeof(pcmd->body.turn_on.req));
+ /* prepare command */
+ as10x_cmd_build(pcmd, (++phandle->cmd_xid),
+ sizeof(pcmd->body.turn_on.req));
- /* fill command */
- pcmd->body.turn_on.req.proc_id = cpu_to_le16(CONTROL_PROC_TURNON);
+ /* fill command */
+ pcmd->body.turn_on.req.proc_id = cpu_to_le16(CONTROL_PROC_TURNON);
- /* send command */
- if(phandle->ops->xfer_cmd) {
- error = phandle->ops->xfer_cmd(
- phandle,
- (uint8_t *) pcmd,
- sizeof(pcmd->body.turn_on.req) + HEADER_SIZE,
- (uint8_t *) prsp,
- sizeof(prsp->body.turn_on.rsp) + HEADER_SIZE);
- }
- else{
- error = AS10X_CMD_ERROR;
- }
+ /* send command */
+ if (phandle->ops->xfer_cmd) {
+ error = phandle->ops->xfer_cmd(phandle, (uint8_t *) pcmd,
+ sizeof(pcmd->body.turn_on.req) +
+ HEADER_SIZE,
+ (uint8_t *) prsp,
+ sizeof(prsp->body.turn_on.rsp) +
+ HEADER_SIZE);
+ } else {
+ error = AS10X_CMD_ERROR;
+ }
- if(error < 0) {
- goto out;
- }
+ if (error < 0)
+ goto out;
- /* parse response */
- error = as10x_rsp_parse(prsp, CONTROL_PROC_TURNON_RSP);
+ /* parse response */
+ error = as10x_rsp_parse(prsp, CONTROL_PROC_TURNON_RSP);
out:
- LEAVE();
- return(error);
+ LEAVE();
+ return error;
}
/**
*/
int as10x_cmd_turn_off(as10x_handle_t *phandle)
{
- int error;
- struct as10x_cmd_t *pcmd, *prsp;
+ int error;
+ struct as10x_cmd_t *pcmd, *prsp;
- ENTER();
+ ENTER();
- pcmd = phandle->cmd;
- prsp = phandle->rsp;
+ pcmd = phandle->cmd;
+ prsp = phandle->rsp;
- /* prepare command */
- as10x_cmd_build(pcmd,(++phandle->cmd_xid),sizeof(pcmd->body.turn_off.req));
+ /* prepare command */
+ as10x_cmd_build(pcmd, (++phandle->cmd_xid),
+ sizeof(pcmd->body.turn_off.req));
- /* fill command */
- pcmd->body.turn_off.req.proc_id = cpu_to_le16(CONTROL_PROC_TURNOFF);
+ /* fill command */
+ pcmd->body.turn_off.req.proc_id = cpu_to_le16(CONTROL_PROC_TURNOFF);
- /* send command */
- if(phandle->ops->xfer_cmd) {
- error = phandle->ops->xfer_cmd(
+ /* send command */
+ if (phandle->ops->xfer_cmd) {
+ error = phandle->ops->xfer_cmd(
phandle, (uint8_t *) pcmd,
sizeof(pcmd->body.turn_off.req) + HEADER_SIZE,
- (uint8_t *) prsp,
+ (uint8_t *) prsp,
sizeof(prsp->body.turn_off.rsp) + HEADER_SIZE);
- }
- else{
- error = AS10X_CMD_ERROR;
- }
+ } else {
+ error = AS10X_CMD_ERROR;
+ }
- if(error < 0) {
- goto out;
- }
+ if (error < 0)
+ goto out;
- /* parse response */
- error = as10x_rsp_parse(prsp, CONTROL_PROC_TURNOFF_RSP);
+ /* parse response */
+ error = as10x_rsp_parse(prsp, CONTROL_PROC_TURNOFF_RSP);
out:
- LEAVE();
- return(error);
+ LEAVE();
+ return error;
}
/**
*/
int as10x_cmd_set_tune(as10x_handle_t *phandle, struct as10x_tune_args *ptune)
{
- int error;
- struct as10x_cmd_t *preq, *prsp;
-
- ENTER();
-
- preq = phandle->cmd;
- prsp = phandle->rsp;
-
- /* prepare command */
- as10x_cmd_build(preq,(++phandle->cmd_xid),sizeof(preq->body.set_tune.req));
-
- /* fill command */
- preq->body.set_tune.req.proc_id = cpu_to_le16(CONTROL_PROC_SETTUNE);
- preq->body.set_tune.req.args.freq = cpu_to_le32(ptune->freq);
- preq->body.set_tune.req.args.bandwidth = ptune->bandwidth;
- preq->body.set_tune.req.args.hier_select = ptune->hier_select;
- preq->body.set_tune.req.args.constellation = ptune->constellation;
- preq->body.set_tune.req.args.hierarchy = ptune->hierarchy;
- preq->body.set_tune.req.args.interleaving_mode = ptune->interleaving_mode;
- preq->body.set_tune.req.args.code_rate = ptune->code_rate;
- preq->body.set_tune.req.args.guard_interval = ptune->guard_interval;
- preq->body.set_tune.req.args.transmission_mode = ptune->transmission_mode;
-
- /* send command */
- if(phandle->ops->xfer_cmd) {
- error = phandle->ops->xfer_cmd(phandle,
- (uint8_t *) preq,
- sizeof(preq->body.set_tune.req) + HEADER_SIZE,
- (uint8_t *) prsp,
- sizeof(prsp->body.set_tune.rsp) + HEADER_SIZE);
- } else{
- error = AS10X_CMD_ERROR;
- }
-
- if(error < 0) {
- goto out;
- }
-
- /* parse response */
- error = as10x_rsp_parse(prsp, CONTROL_PROC_SETTUNE_RSP);
+ int error;
+ struct as10x_cmd_t *preq, *prsp;
+
+ ENTER();
+
+ preq = phandle->cmd;
+ prsp = phandle->rsp;
+
+ /* prepare command */
+ as10x_cmd_build(preq, (++phandle->cmd_xid),
+ sizeof(preq->body.set_tune.req));
+
+ /* fill command */
+ preq->body.set_tune.req.proc_id = cpu_to_le16(CONTROL_PROC_SETTUNE);
+ preq->body.set_tune.req.args.freq = cpu_to_le32(ptune->freq);
+ preq->body.set_tune.req.args.bandwidth = ptune->bandwidth;
+ preq->body.set_tune.req.args.hier_select = ptune->hier_select;
+ preq->body.set_tune.req.args.constellation = ptune->constellation;
+ preq->body.set_tune.req.args.hierarchy = ptune->hierarchy;
+ preq->body.set_tune.req.args.interleaving_mode =
+ ptune->interleaving_mode;
+ preq->body.set_tune.req.args.code_rate = ptune->code_rate;
+ preq->body.set_tune.req.args.guard_interval = ptune->guard_interval;
+ preq->body.set_tune.req.args.transmission_mode =
+ ptune->transmission_mode;
+
+ /* send command */
+ if (phandle->ops->xfer_cmd) {
+ error = phandle->ops->xfer_cmd(phandle,
+ (uint8_t *) preq,
+ sizeof(preq->body.set_tune.req)
+ + HEADER_SIZE,
+ (uint8_t *) prsp,
+ sizeof(prsp->body.set_tune.rsp)
+ + HEADER_SIZE);
+ } else {
+ error = AS10X_CMD_ERROR;
+ }
+
+ if (error < 0)
+ goto out;
+
+ /* parse response */
+ error = as10x_rsp_parse(prsp, CONTROL_PROC_SETTUNE_RSP);
out:
- LEAVE();
- return(error);
+ LEAVE();
+ return error;
}
/**
\return 0 when no error, < 0 in case of error.
\callgraph
*/
-int as10x_cmd_get_tune_status(as10x_handle_t *phandle, struct as10x_tune_status *pstatus)
+int as10x_cmd_get_tune_status(as10x_handle_t *phandle,
+ struct as10x_tune_status *pstatus)
{
- int error;
- struct as10x_cmd_t *preq, *prsp;
+ int error;
+ struct as10x_cmd_t *preq, *prsp;
- ENTER();
+ ENTER();
- preq = phandle->cmd;
- prsp = phandle->rsp;
+ preq = phandle->cmd;
+ prsp = phandle->rsp;
- /* prepare command */
- as10x_cmd_build(preq,(++phandle->cmd_xid),
- sizeof(preq->body.get_tune_status.req));
+ /* prepare command */
+ as10x_cmd_build(preq, (++phandle->cmd_xid),
+ sizeof(preq->body.get_tune_status.req));
- /* fill command */
- preq->body.get_tune_status.req.proc_id =
- cpu_to_le16(CONTROL_PROC_GETTUNESTAT);
+ /* fill command */
+ preq->body.get_tune_status.req.proc_id =
+ cpu_to_le16(CONTROL_PROC_GETTUNESTAT);
- /* send command */
- if (phandle->ops->xfer_cmd) {
- error = phandle->ops->xfer_cmd(
+ /* send command */
+ if (phandle->ops->xfer_cmd) {
+ error = phandle->ops->xfer_cmd(
phandle,
(uint8_t *) preq,
sizeof(preq->body.get_tune_status.req) + HEADER_SIZE,
(uint8_t *) prsp,
sizeof(prsp->body.get_tune_status.rsp) + HEADER_SIZE);
- }
- else{
- error = AS10X_CMD_ERROR;
- }
-
- if (error < 0) {
- goto out;
- }
-
- /* parse response */
- error = as10x_rsp_parse(prsp, CONTROL_PROC_GETTUNESTAT_RSP);
- if (error < 0) {
- goto out;
- }
-
- /* Response OK -> get response data */
- pstatus->tune_state = prsp->body.get_tune_status.rsp.sts.tune_state;
- pstatus->signal_strength =
- le16_to_cpu(prsp->body.get_tune_status.rsp.sts.signal_strength);
- pstatus->PER = le16_to_cpu(prsp->body.get_tune_status.rsp.sts.PER);
- pstatus->BER = le16_to_cpu(prsp->body.get_tune_status.rsp.sts.BER);
+ } else {
+ error = AS10X_CMD_ERROR;
+ }
+
+ if (error < 0)
+ goto out;
+
+ /* parse response */
+ error = as10x_rsp_parse(prsp, CONTROL_PROC_GETTUNESTAT_RSP);
+ if (error < 0)
+ goto out;
+
+ /* Response OK -> get response data */
+ pstatus->tune_state = prsp->body.get_tune_status.rsp.sts.tune_state;
+ pstatus->signal_strength =
+ le16_to_cpu(prsp->body.get_tune_status.rsp.sts.signal_strength);
+ pstatus->PER = le16_to_cpu(prsp->body.get_tune_status.rsp.sts.PER);
+ pstatus->BER = le16_to_cpu(prsp->body.get_tune_status.rsp.sts.BER);
out:
- LEAVE();
- return(error);
+ LEAVE();
+ return error;
}
/**
*/
int as10x_cmd_get_tps(as10x_handle_t *phandle, struct as10x_tps *ptps)
{
-
- int error;
- struct as10x_cmd_t *pcmd, *prsp;
-
- ENTER();
-
- pcmd = phandle->cmd;
- prsp = phandle->rsp;
-
- /* prepare command */
- as10x_cmd_build(pcmd, (++phandle->cmd_xid),sizeof(pcmd->body.get_tps.req));
-
- /* fill command */
- pcmd->body.get_tune_status.req.proc_id = cpu_to_le16(CONTROL_PROC_GETTPS);
-
- /* send command */
- if(phandle->ops->xfer_cmd) {
- error = phandle->ops->xfer_cmd(phandle,
- (uint8_t *) pcmd, sizeof(pcmd->body.get_tps.req) + HEADER_SIZE,
- (uint8_t *) prsp, sizeof(prsp->body.get_tps.rsp) + HEADER_SIZE);
- }
- else{
- error = AS10X_CMD_ERROR;
- }
-
- if(error < 0) {
- goto out;
- }
-
- /* parse response */
- error = as10x_rsp_parse(prsp, CONTROL_PROC_GETTPS_RSP);
- if (error < 0) {
- goto out;
- }
-
- /* Response OK -> get response data */
- ptps->constellation = prsp->body.get_tps.rsp.tps.constellation;
- ptps->hierarchy = prsp->body.get_tps.rsp.tps.hierarchy;
- ptps->interleaving_mode = prsp->body.get_tps.rsp.tps.interleaving_mode;
- ptps->code_rate_HP = prsp->body.get_tps.rsp.tps.code_rate_HP;
- ptps->code_rate_LP = prsp->body.get_tps.rsp.tps.code_rate_LP;
- ptps->guard_interval = prsp->body.get_tps.rsp.tps.guard_interval;
- ptps->transmission_mode = prsp->body.get_tps.rsp.tps.transmission_mode;
- ptps->DVBH_mask_HP = prsp->body.get_tps.rsp.tps.DVBH_mask_HP;
- ptps->DVBH_mask_LP = prsp->body.get_tps.rsp.tps.DVBH_mask_LP;
- ptps->cell_ID = le16_to_cpu(prsp->body.get_tps.rsp.tps.cell_ID);
+ int error;
+ struct as10x_cmd_t *pcmd, *prsp;
+
+ ENTER();
+
+ pcmd = phandle->cmd;
+ prsp = phandle->rsp;
+
+ /* prepare command */
+ as10x_cmd_build(pcmd, (++phandle->cmd_xid),
+ sizeof(pcmd->body.get_tps.req));
+
+ /* fill command */
+ pcmd->body.get_tune_status.req.proc_id =
+ cpu_to_le16(CONTROL_PROC_GETTPS);
+
+ /* send command */
+ if (phandle->ops->xfer_cmd) {
+ error = phandle->ops->xfer_cmd(phandle,
+ (uint8_t *) pcmd,
+ sizeof(pcmd->body.get_tps.req) +
+ HEADER_SIZE,
+ (uint8_t *) prsp,
+ sizeof(prsp->body.get_tps.rsp) +
+ HEADER_SIZE);
+ } else {
+ error = AS10X_CMD_ERROR;
+ }
+
+ if (error < 0)
+ goto out;
+
+ /* parse response */
+ error = as10x_rsp_parse(prsp, CONTROL_PROC_GETTPS_RSP);
+ if (error < 0)
+ goto out;
+
+ /* Response OK -> get response data */
+ ptps->constellation = prsp->body.get_tps.rsp.tps.constellation;
+ ptps->hierarchy = prsp->body.get_tps.rsp.tps.hierarchy;
+ ptps->interleaving_mode = prsp->body.get_tps.rsp.tps.interleaving_mode;
+ ptps->code_rate_HP = prsp->body.get_tps.rsp.tps.code_rate_HP;
+ ptps->code_rate_LP = prsp->body.get_tps.rsp.tps.code_rate_LP;
+ ptps->guard_interval = prsp->body.get_tps.rsp.tps.guard_interval;
+ ptps->transmission_mode = prsp->body.get_tps.rsp.tps.transmission_mode;
+ ptps->DVBH_mask_HP = prsp->body.get_tps.rsp.tps.DVBH_mask_HP;
+ ptps->DVBH_mask_LP = prsp->body.get_tps.rsp.tps.DVBH_mask_LP;
+ ptps->cell_ID = le16_to_cpu(prsp->body.get_tps.rsp.tps.cell_ID);
out:
- LEAVE();
- return(error);
+ LEAVE();
+ return error;
}
/**
int as10x_cmd_get_demod_stats(as10x_handle_t *phandle,
struct as10x_demod_stats *pdemod_stats)
{
- int error;
- struct as10x_cmd_t *pcmd, *prsp;
-
- ENTER();
-
- pcmd = phandle->cmd;
- prsp = phandle->rsp;
-
- /* prepare command */
- as10x_cmd_build(pcmd, (++phandle->cmd_xid),
- sizeof(pcmd->body.get_demod_stats.req));
-
- /* fill command */
- pcmd->body.get_demod_stats.req.proc_id =
- cpu_to_le16(CONTROL_PROC_GET_DEMOD_STATS);
-
- /* send command */
- if(phandle->ops->xfer_cmd) {
- error = phandle->ops->xfer_cmd(phandle,
- (uint8_t *) pcmd,
- sizeof(pcmd->body.get_demod_stats.req) + HEADER_SIZE,
- (uint8_t *) prsp,
- sizeof(prsp->body.get_demod_stats.rsp) + HEADER_SIZE);
- }
- else{
- error = AS10X_CMD_ERROR;
- }
-
- if(error < 0) {
- goto out;
- }
-
- /* parse response */
- error = as10x_rsp_parse(prsp,CONTROL_PROC_GET_DEMOD_STATS_RSP);
- if (error < 0) {
- goto out;
- }
-
- /* Response OK -> get response data */
- pdemod_stats->frame_count =
- le32_to_cpu(prsp->body.get_demod_stats.rsp.stats.frame_count);
- pdemod_stats->bad_frame_count =
- le32_to_cpu(prsp->body.get_demod_stats.rsp.stats.bad_frame_count);
- pdemod_stats->bytes_fixed_by_rs =
- le32_to_cpu(prsp->body.get_demod_stats.rsp.stats.bytes_fixed_by_rs);
- pdemod_stats->mer =
- le16_to_cpu(prsp->body.get_demod_stats.rsp.stats.mer);
- pdemod_stats->has_started =
- prsp->body.get_demod_stats.rsp.stats.has_started;
+ int error;
+ struct as10x_cmd_t *pcmd, *prsp;
+
+ ENTER();
+
+ pcmd = phandle->cmd;
+ prsp = phandle->rsp;
+
+ /* prepare command */
+ as10x_cmd_build(pcmd, (++phandle->cmd_xid),
+ sizeof(pcmd->body.get_demod_stats.req));
+
+ /* fill command */
+ pcmd->body.get_demod_stats.req.proc_id =
+ cpu_to_le16(CONTROL_PROC_GET_DEMOD_STATS);
+
+ /* send command */
+ if (phandle->ops->xfer_cmd) {
+ error = phandle->ops->xfer_cmd(phandle,
+ (uint8_t *) pcmd,
+ sizeof(pcmd->body.get_demod_stats.req)
+ + HEADER_SIZE,
+ (uint8_t *) prsp,
+ sizeof(prsp->body.get_demod_stats.rsp)
+ + HEADER_SIZE);
+ } else {
+ error = AS10X_CMD_ERROR;
+ }
+
+ if (error < 0)
+ goto out;
+
+ /* parse response */
+ error = as10x_rsp_parse(prsp, CONTROL_PROC_GET_DEMOD_STATS_RSP);
+ if (error < 0)
+ goto out;
+
+ /* Response OK -> get response data */
+ pdemod_stats->frame_count =
+ le32_to_cpu(prsp->body.get_demod_stats.rsp.stats.frame_count);
+ pdemod_stats->bad_frame_count =
+ le32_to_cpu(prsp->body.get_demod_stats.rsp.stats.bad_frame_count);
+ pdemod_stats->bytes_fixed_by_rs =
+ le32_to_cpu(prsp->body.get_demod_stats.rsp.stats.bytes_fixed_by_rs);
+ pdemod_stats->mer =
+ le16_to_cpu(prsp->body.get_demod_stats.rsp.stats.mer);
+ pdemod_stats->has_started =
+ prsp->body.get_demod_stats.rsp.stats.has_started;
out:
- LEAVE();
- return(error);
+ LEAVE();
+ return error;
}
/**
int as10x_cmd_get_impulse_resp(as10x_handle_t *phandle,
uint8_t *is_ready)
{
- int error;
- struct as10x_cmd_t *pcmd, *prsp;
-
- ENTER();
-
- pcmd = phandle->cmd;
- prsp = phandle->rsp;
-
- /* prepare command */
- as10x_cmd_build(pcmd, (++phandle->cmd_xid),
- sizeof(pcmd->body.get_impulse_rsp.req));
-
- /* fill command */
- pcmd->body.get_impulse_rsp.req.proc_id =
- cpu_to_le16(CONTROL_PROC_GET_IMPULSE_RESP);
-
- /* send command */
- if(phandle->ops->xfer_cmd) {
- error = phandle->ops->xfer_cmd(phandle,
- (uint8_t *) pcmd,
- sizeof(pcmd->body.get_impulse_rsp.req) + HEADER_SIZE,
- (uint8_t *) prsp,
- sizeof(prsp->body.get_impulse_rsp.rsp) + HEADER_SIZE);
- }
- else{
- error = AS10X_CMD_ERROR;
- }
-
- if(error < 0) {
- goto out;
- }
-
- /* parse response */
- error = as10x_rsp_parse(prsp,CONTROL_PROC_GET_IMPULSE_RESP_RSP);
- if (error < 0) {
- goto out;
- }
-
- /* Response OK -> get response data */
- *is_ready = prsp->body.get_impulse_rsp.rsp.is_ready;
+ int error;
+ struct as10x_cmd_t *pcmd, *prsp;
+
+ ENTER();
+
+ pcmd = phandle->cmd;
+ prsp = phandle->rsp;
+
+ /* prepare command */
+ as10x_cmd_build(pcmd, (++phandle->cmd_xid),
+ sizeof(pcmd->body.get_impulse_rsp.req));
+
+ /* fill command */
+ pcmd->body.get_impulse_rsp.req.proc_id =
+ cpu_to_le16(CONTROL_PROC_GET_IMPULSE_RESP);
+
+ /* send command */
+ if (phandle->ops->xfer_cmd) {
+ error = phandle->ops->xfer_cmd(phandle,
+ (uint8_t *) pcmd,
+ sizeof(pcmd->body.get_impulse_rsp.req)
+ + HEADER_SIZE,
+ (uint8_t *) prsp,
+ sizeof(prsp->body.get_impulse_rsp.rsp)
+ + HEADER_SIZE);
+ } else {
+ error = AS10X_CMD_ERROR;
+ }
+
+ if (error < 0)
+ goto out;
+
+ /* parse response */
+ error = as10x_rsp_parse(prsp, CONTROL_PROC_GET_IMPULSE_RESP_RSP);
+ if (error < 0)
+ goto out;
+
+ /* Response OK -> get response data */
+ *is_ready = prsp->body.get_impulse_rsp.rsp.is_ready;
out:
- LEAVE();
- return(error);
+ LEAVE();
+ return error;
}
void as10x_cmd_build(struct as10x_cmd_t *pcmd,
uint16_t xid, uint16_t cmd_len)
{
- pcmd->header.req_id = cpu_to_le16(xid);
- pcmd->header.prog = cpu_to_le16(SERVICE_PROG_ID);
- pcmd->header.version = cpu_to_le16(SERVICE_PROG_VERSION);
- pcmd->header.data_len = cpu_to_le16(cmd_len);
+ pcmd->header.req_id = cpu_to_le16(xid);
+ pcmd->header.prog = cpu_to_le16(SERVICE_PROG_ID);
+ pcmd->header.version = cpu_to_le16(SERVICE_PROG_VERSION);
+ pcmd->header.data_len = cpu_to_le16(cmd_len);
}
/**
*/
int as10x_rsp_parse(struct as10x_cmd_t *prsp, uint16_t proc_id)
{
- int error;
+ int error;
- /* extract command error code */
- error = prsp->body.common.rsp.error;
+ /* extract command error code */
+ error = prsp->body.common.rsp.error;
- if((error == 0) && (le16_to_cpu(prsp->body.common.rsp.proc_id) == proc_id)) {
- return 0;
- }
+ if ((error == 0) &&
+ (le16_to_cpu(prsp->body.common.rsp.proc_id) == proc_id)) {
+ return 0;
+ }
- return AS10X_CMD_ERROR;
+ return AS10X_CMD_ERROR;
}
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff