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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-07-05 12:16:26 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-07-05 12:16:26 -0300
commit298f18a3e2e078c796d3f852091fbe961fbca806 (patch)
tree5edf68c7efcc8aca6984a93272f6517450fd501c /drivers/media/dvb
parent82041c0a15fdd45336f11c893c4ff69d48dcc4f1 (diff)
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[media] rtl2832: save some data space by using a macro instead of a table
Instead of using a table for reg bitmask, use a macro. This should save some data segment space. Cc: Thomas Mair <thomas.mair86@googlemail.com> Cc: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb')
-rw-r--r--drivers/media/dvb/frontends/rtl2832.c42
1 files changed, 4 insertions, 38 deletions
diff --git a/drivers/media/dvb/frontends/rtl2832.c b/drivers/media/dvb/frontends/rtl2832.c
index d0cbe27f979e..2da592fb38ad 100644
--- a/drivers/media/dvb/frontends/rtl2832.c
+++ b/drivers/media/dvb/frontends/rtl2832.c
@@ -19,47 +19,13 @@
*/
#include "rtl2832_priv.h"
-
+#include <linux/bitops.h>
int rtl2832_debug;
module_param_named(debug, rtl2832_debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
-
-static const int reg_mask[32] = {
- 0x00000001,
- 0x00000003,
- 0x00000007,
- 0x0000000f,
- 0x0000001f,
- 0x0000003f,
- 0x0000007f,
- 0x000000ff,
- 0x000001ff,
- 0x000003ff,
- 0x000007ff,
- 0x00000fff,
- 0x00001fff,
- 0x00003fff,
- 0x00007fff,
- 0x0000ffff,
- 0x0001ffff,
- 0x0003ffff,
- 0x0007ffff,
- 0x000fffff,
- 0x001fffff,
- 0x003fffff,
- 0x007fffff,
- 0x00ffffff,
- 0x01ffffff,
- 0x03ffffff,
- 0x07ffffff,
- 0x0fffffff,
- 0x1fffffff,
- 0x3fffffff,
- 0x7fffffff,
- 0xffffffff
-};
+#define REG_MASK(b) (BIT(b + 1) - 1)
static const struct rtl2832_reg_entry registers[] = {
[DVBT_SOFT_RST] = {0x1, 0x1, 2, 2},
@@ -317,7 +283,7 @@ int rtl2832_rd_demod_reg(struct rtl2832_priv *priv, int reg, u32 *val)
page = registers[reg].page;
len = (msb >> 3) + 1;
- mask = reg_mask[msb - lsb];
+ mask = REG_MASK(msb - lsb);
ret = rtl2832_rd_regs(priv, reg_start_addr, page, &reading[0], len);
if (ret)
@@ -359,7 +325,7 @@ int rtl2832_wr_demod_reg(struct rtl2832_priv *priv, int reg, u32 val)
page = registers[reg].page;
len = (msb >> 3) + 1;
- mask = reg_mask[msb - lsb];
+ mask = REG_MASK(msb - lsb);
ret = rtl2832_rd_regs(priv, reg_start_addr, page, &reading[0], len);