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linux/sound/soc/sh/rcar/dvc.c
Kees Cook a86854d0c5 treewide: devm_kzalloc() -> devm_kcalloc() 
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:

        devm_kzalloc(handle, a * b, gfp)

with:
        devm_kcalloc(handle, a * b, gfp)

as well as handling cases of:

        devm_kzalloc(handle, a * b * c, gfp)

with:

        devm_kzalloc(handle, array3_size(a, b, c), gfp)

as it's slightly less ugly than:

        devm_kcalloc(handle, array_size(a, b), c, gfp)

This does, however, attempt to ignore constant size factors like:

        devm_kzalloc(handle, 4 * 1024, gfp)

though any constants defined via macros get caught up in the conversion.

Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.

Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".

The Coccinelle script used for this was:

// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@

(
  devm_kzalloc(HANDLE,
-	(sizeof(TYPE)) * E
+	sizeof(TYPE) * E
  , ...)
|
  devm_kzalloc(HANDLE,
-	(sizeof(THING)) * E
+	sizeof(THING) * E
  , ...)
)

// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * (COUNT)
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(__u8) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(char) * COUNT
+	COUNT
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(unsigned char) * COUNT
+	COUNT
  , ...)
)

// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@

(
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_ID)
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_ID
+	COUNT_ID, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (COUNT_CONST)
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * COUNT_CONST
+	COUNT_CONST, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_ID)
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_ID
+	COUNT_ID, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (COUNT_CONST)
+	COUNT_CONST, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * COUNT_CONST
+	COUNT_CONST, sizeof(THING)
  , ...)
)

// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@

- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	SIZE * COUNT
+	COUNT, SIZE
  , ...)

// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(TYPE))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * (COUNT) * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * (STRIDE)
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING) * COUNT * STRIDE
+	array3_size(COUNT, STRIDE, sizeof(THING))
  , ...)
)

// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@

(
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(THING1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(THING1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * COUNT
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
|
  devm_kzalloc(HANDLE,
-	sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+	array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
  , ...)
)

// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@

(
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * STRIDE * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(COUNT) * (STRIDE) * (SIZE)
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
|
  devm_kzalloc(HANDLE,
-	COUNT * STRIDE * SIZE
+	array3_size(COUNT, STRIDE, SIZE)
  , ...)
)

// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * E3
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	(E1) * (E2) * (E3)
+	array3_size(E1, E2, E3)
  , ...)
|
  devm_kzalloc(HANDLE,
-	E1 * E2 * E3
+	array3_size(E1, E2, E3)
  , ...)
)

// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@

(
  devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
  devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
  devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
  devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * (E2)
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(TYPE) * E2
+	E2, sizeof(TYPE)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * (E2)
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	sizeof(THING) * E2
+	E2, sizeof(THING)
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * E2
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	(E1) * (E2)
+	E1, E2
  , ...)
|
- devm_kzalloc
+ devm_kcalloc
  (HANDLE,
-	E1 * E2
+	E1, E2
  , ...)
)

Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 16:19:22 -07:00

396 lines
8.7 KiB
C
Raw Blame History

/*
* Renesas R-Car DVC support
*
* Copyright (C) 2014 Renesas Solutions Corp.
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* Playback Volume
* amixer set "DVC Out" 100%
*
* Capture Volume
* amixer set "DVC In" 100%
*
* Playback Mute
* amixer set "DVC Out Mute" on
*
* Capture Mute
* amixer set "DVC In Mute" on
*
* Volume Ramp
* amixer set "DVC Out Ramp Up Rate" "0.125 dB/64 steps"
* amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps"
* amixer set "DVC Out Ramp" on
* aplay xxx.wav &
* amixer set "DVC Out" 80% // Volume Down
* amixer set "DVC Out" 100% // Volume Up
*/
#include "rsnd.h"
#define RSND_DVC_NAME_SIZE 16
#define DVC_NAME "dvc"
struct rsnd_dvc {
struct rsnd_mod mod;
struct rsnd_kctrl_cfg_m volume;
struct rsnd_kctrl_cfg_m mute;
struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
struct rsnd_kctrl_cfg_s rdown; /* Ramp Rate Down */
u32 flags;
};
#define KCTRL_INITIALIZED (1 << 0)
#define rsnd_dvc_get(priv, id) ((struct rsnd_dvc *)(priv->dvc) + id)
#define rsnd_dvc_nr(priv) ((priv)->dvc_nr)
#define rsnd_mod_to_dvc(_mod) \
container_of((_mod), struct rsnd_dvc, mod)
#define for_each_rsnd_dvc(pos, priv, i) \
for ((i) = 0; \
((i) < rsnd_dvc_nr(priv)) && \
((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
i++)
static void rsnd_dvc_activation(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, DVC_SWRSR, 0);
rsnd_mod_write(mod, DVC_SWRSR, 1);
}
static void rsnd_dvc_halt(struct rsnd_mod *mod)
{
rsnd_mod_write(mod, DVC_DVUIR, 1);
rsnd_mod_write(mod, DVC_SWRSR, 0);
}
#define rsnd_dvc_get_vrpdr(dvc) (rsnd_kctrl_vals(dvc->rup) << 8 | \
rsnd_kctrl_vals(dvc->rdown))
#define rsnd_dvc_get_vrdbr(dvc) (0x3ff - (rsnd_kctrl_valm(dvc->volume, 0) >> 13))
static void rsnd_dvc_volume_parameter(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
u32 val[RSND_MAX_CHANNELS];
int i;
/* Enable Ramp */
if (rsnd_kctrl_vals(dvc->ren))
for (i = 0; i < RSND_MAX_CHANNELS; i++)
val[i] = rsnd_kctrl_max(dvc->volume);
else
for (i = 0; i < RSND_MAX_CHANNELS; i++)
val[i] = rsnd_kctrl_valm(dvc->volume, i);
/* Enable Digital Volume */
rsnd_mod_write(mod, DVC_VOL0R, val[0]);
rsnd_mod_write(mod, DVC_VOL1R, val[1]);
rsnd_mod_write(mod, DVC_VOL2R, val[2]);
rsnd_mod_write(mod, DVC_VOL3R, val[3]);
rsnd_mod_write(mod, DVC_VOL4R, val[4]);
rsnd_mod_write(mod, DVC_VOL5R, val[5]);
rsnd_mod_write(mod, DVC_VOL6R, val[6]);
rsnd_mod_write(mod, DVC_VOL7R, val[7]);
}
static void rsnd_dvc_volume_init(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
u32 adinr = 0;
u32 dvucr = 0;
u32 vrctr = 0;
u32 vrpdr = 0;
u32 vrdbr = 0;
adinr = rsnd_get_adinr_bit(mod, io) |
rsnd_runtime_channel_after_ctu(io);
/* Enable Digital Volume, Zero Cross Mute Mode */
dvucr |= 0x101;
/* Enable Ramp */
if (rsnd_kctrl_vals(dvc->ren)) {
dvucr |= 0x10;
/*
* FIXME !!
* use scale-downed Digital Volume
* as Volume Ramp
* 7F FFFF -> 3FF
*/
vrctr = 0xff;
vrpdr = rsnd_dvc_get_vrpdr(dvc);
vrdbr = rsnd_dvc_get_vrdbr(dvc);
}
/* Initialize operation */
rsnd_mod_write(mod, DVC_DVUIR, 1);
/* General Information */
rsnd_mod_write(mod, DVC_ADINR, adinr);
rsnd_mod_write(mod, DVC_DVUCR, dvucr);
/* Volume Ramp Parameter */
rsnd_mod_write(mod, DVC_VRCTR, vrctr);
rsnd_mod_write(mod, DVC_VRPDR, vrpdr);
rsnd_mod_write(mod, DVC_VRDBR, vrdbr);
/* Digital Volume Function Parameter */
rsnd_dvc_volume_parameter(io, mod);
/* cancel operation */
rsnd_mod_write(mod, DVC_DVUIR, 0);
}
static void rsnd_dvc_volume_update(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
u32 zcmcr = 0;
u32 vrpdr = 0;
u32 vrdbr = 0;
int i;
for (i = 0; i < rsnd_kctrl_size(dvc->mute); i++)
zcmcr |= (!!rsnd_kctrl_valm(dvc->mute, i)) << i;
if (rsnd_kctrl_vals(dvc->ren)) {
vrpdr = rsnd_dvc_get_vrpdr(dvc);
vrdbr = rsnd_dvc_get_vrdbr(dvc);
}
/* Disable DVC Register access */
rsnd_mod_write(mod, DVC_DVUER, 0);
/* Zero Cross Mute Function */
rsnd_mod_write(mod, DVC_ZCMCR, zcmcr);
/* Volume Ramp Function */
rsnd_mod_write(mod, DVC_VRPDR, vrpdr);
rsnd_mod_write(mod, DVC_VRDBR, vrdbr);
/* add DVC_VRWTR here */
/* Digital Volume Function Parameter */
rsnd_dvc_volume_parameter(io, mod);
/* Enable DVC Register access */
rsnd_mod_write(mod, DVC_DVUER, 1);
}
static int rsnd_dvc_probe_(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
return rsnd_cmd_attach(io, rsnd_mod_id(mod));
}
static int rsnd_dvc_init(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_mod_power_on(mod);
rsnd_dvc_activation(mod);
rsnd_dvc_volume_init(io, mod);
rsnd_dvc_volume_update(io, mod);
return 0;
}
static int rsnd_dvc_quit(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct rsnd_priv *priv)
{
rsnd_dvc_halt(mod);
rsnd_mod_power_off(mod);
return 0;
}
static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
struct rsnd_dai_stream *io,
struct snd_soc_pcm_runtime *rtd)
{
struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
int is_play = rsnd_io_is_play(io);
int channels = rsnd_rdai_channels_get(rdai);
int ret;
if (rsnd_flags_has(dvc, KCTRL_INITIALIZED))
return 0;
/* Volume */
ret = rsnd_kctrl_new_m(mod, io, rtd,
is_play ?
"DVC Out Playback Volume" : "DVC In Capture Volume",
rsnd_kctrl_accept_anytime,
rsnd_dvc_volume_update,
&dvc->volume, channels,
0x00800000 - 1);
if (ret < 0)
return ret;
/* Mute */
ret = rsnd_kctrl_new_m(mod, io, rtd,
is_play ?
"DVC Out Mute Switch" : "DVC In Mute Switch",
rsnd_kctrl_accept_anytime,
rsnd_dvc_volume_update,
&dvc->mute, channels,
1);
if (ret < 0)
return ret;
/* Ramp */
ret = rsnd_kctrl_new_s(mod, io, rtd,
is_play ?
"DVC Out Ramp Switch" : "DVC In Ramp Switch",
rsnd_kctrl_accept_anytime,
rsnd_dvc_volume_update,
&dvc->ren, 1);
if (ret < 0)
return ret;
ret = rsnd_kctrl_new_e(mod, io, rtd,
is_play ?
"DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
rsnd_kctrl_accept_anytime,
rsnd_dvc_volume_update,
&dvc->rup,
volume_ramp_rate,
VOLUME_RAMP_MAX_DVC);
if (ret < 0)
return ret;
ret = rsnd_kctrl_new_e(mod, io, rtd,
is_play ?
"DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
rsnd_kctrl_accept_anytime,
rsnd_dvc_volume_update,
&dvc->rdown,
volume_ramp_rate,
VOLUME_RAMP_MAX_DVC);
if (ret < 0)
return ret;
rsnd_flags_set(dvc, KCTRL_INITIALIZED);
return 0;
}
static struct dma_chan *rsnd_dvc_dma_req(struct rsnd_dai_stream *io,
struct rsnd_mod *mod)
{
struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
return rsnd_dma_request_channel(rsnd_dvc_of_node(priv),
mod, "tx");
}
static struct rsnd_mod_ops rsnd_dvc_ops = {
.name = DVC_NAME,
.dma_req = rsnd_dvc_dma_req,
.probe = rsnd_dvc_probe_,
.init = rsnd_dvc_init,
.quit = rsnd_dvc_quit,
.pcm_new = rsnd_dvc_pcm_new,
};
struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
{
if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv)))
id = 0;
return rsnd_mod_get(rsnd_dvc_get(priv, id));
}
int rsnd_dvc_probe(struct rsnd_priv *priv)
{
struct device_node *node;
struct device_node *np;
struct device *dev = rsnd_priv_to_dev(priv);
struct rsnd_dvc *dvc;
struct clk *clk;
char name[RSND_DVC_NAME_SIZE];
int i, nr, ret;
/* This driver doesn't support Gen1 at this point */
if (rsnd_is_gen1(priv))
return 0;
node = rsnd_dvc_of_node(priv);
if (!node)
return 0; /* not used is not error */
nr = of_get_child_count(node);
if (!nr) {
ret = -EINVAL;
goto rsnd_dvc_probe_done;
}
dvc = devm_kcalloc(dev, nr, sizeof(*dvc), GFP_KERNEL);
if (!dvc) {
ret = -ENOMEM;
goto rsnd_dvc_probe_done;
}
priv->dvc_nr = nr;
priv->dvc = dvc;
i = 0;
ret = 0;
for_each_child_of_node(node, np) {
dvc = rsnd_dvc_get(priv, i);
snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d",
DVC_NAME, i);
clk = devm_clk_get(dev, name);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
of_node_put(np);
goto rsnd_dvc_probe_done;
}
ret = rsnd_mod_init(priv, rsnd_mod_get(dvc), &rsnd_dvc_ops,
clk, rsnd_mod_get_status, RSND_MOD_DVC, i);
if (ret) {
of_node_put(np);
goto rsnd_dvc_probe_done;
}
i++;
}
rsnd_dvc_probe_done:
of_node_put(node);
return ret;
}
void rsnd_dvc_remove(struct rsnd_priv *priv)
{
struct rsnd_dvc *dvc;
int i;
for_each_rsnd_dvc(dvc, priv, i) {
rsnd_mod_quit(rsnd_mod_get(dvc));
}
}
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