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firmware: arm_scpi: improve struct dvfs_info to make code better readable 

Making the header subfields members of struct dvfs_info allows to make
the code better readable and avoids some macro magic.

In addition remove a useless statement using info->latency.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Heiner Kallweit 2017-10-04 20:56:44 +02:00 committed by Sudeep Holla
parent 95998c7a6c
commit d9e324ea13
1 changed files with 5 additions and 8 deletions
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13
drivers/firmware/arm_scpi.c
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@ -72,8 +72,6 @@
#define MAX_DVFS_DOMAINS 8
#define MAX_DVFS_OPPS 16
#define DVFS_LATENCY(hdr) (le32_to_cpu(hdr) >> 16)
#define DVFS_OPP_COUNT(hdr) ((le32_to_cpu(hdr) >> 8) & 0xff)
#define PROTOCOL_REV_MINOR_BITS 16
#define PROTOCOL_REV_MINOR_MASK ((1U << PROTOCOL_REV_MINOR_BITS) - 1)
@ -328,7 +326,9 @@ struct legacy_clk_set_value {
} __packed;
struct dvfs_info {
__le32 header;
u8 domain;
u8 opp_count;
__le16 latency;
struct {
__le32 freq;
__le32 m_volt;
@ -667,8 +667,8 @@ static int scpi_dvfs_populate_info(struct device *dev, u8 domain)
if (!info)
return -ENOMEM;
info->count = DVFS_OPP_COUNT(buf.header);
info->latency = DVFS_LATENCY(buf.header) * 1000; /* uS to nS */
info->count = buf.opp_count;
info->latency = le16_to_cpu(buf.latency) * 1000; /* uS to nS */
info->opps = devm_kcalloc(dev, info->count, sizeof(*opp), GFP_KERNEL);
if (!info->opps)
@ -721,9 +721,6 @@ static int scpi_dvfs_get_transition_latency(struct device *dev)
if (IS_ERR(info))
return PTR_ERR(info);
if (!info->latency)
return 0;
return info->latency;
}