summaryrefslogtreecommitdiffstats
path: root/drivers/memory/samsung/exynos5422-dmc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/memory/samsung/exynos5422-dmc.c')
-rw-r--r--drivers/memory/samsung/exynos5422-dmc.c90
1 files changed, 41 insertions, 49 deletions
diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c
index da7ecd921c72..7d80322754fa 100644
--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c
@@ -4,6 +4,7 @@
* Author: Lukasz Luba <l.luba@partner.samsung.com>
*/
+#include <linux/cleanup.h>
#include <linux/clk.h>
#include <linux/devfreq.h>
#include <linux/devfreq-event.h>
@@ -339,19 +340,20 @@ static int exynos5_switch_timing_regs(struct exynos5_dmc *dmc, bool set)
static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
struct devfreq_dev_profile *profile)
{
+ struct device *dev = dmc->dev;
int i, ret;
int idx;
unsigned long freq;
- ret = devm_pm_opp_of_add_table(dmc->dev);
+ ret = devm_pm_opp_of_add_table(dev);
if (ret < 0) {
- dev_err(dmc->dev, "Failed to get OPP table\n");
+ dev_err(dev, "Failed to get OPP table\n");
return ret;
}
- dmc->opp_count = dev_pm_opp_get_opp_count(dmc->dev);
+ dmc->opp_count = dev_pm_opp_get_opp_count(dev);
- dmc->opp = devm_kmalloc_array(dmc->dev, dmc->opp_count,
+ dmc->opp = devm_kmalloc_array(dev, dmc->opp_count,
sizeof(struct dmc_opp_table), GFP_KERNEL);
if (!dmc->opp)
return -ENOMEM;
@@ -360,7 +362,7 @@ static int exynos5_init_freq_table(struct exynos5_dmc *dmc,
for (i = 0, freq = ULONG_MAX; i < dmc->opp_count; i++, freq--) {
struct dev_pm_opp *opp;
- opp = dev_pm_opp_find_freq_floor(dmc->dev, &freq);
+ opp = dev_pm_opp_find_freq_floor(dev, &freq);
if (IS_ERR(opp))
return PTR_ERR(opp);
@@ -1175,51 +1177,44 @@ static int create_timings_aligned(struct exynos5_dmc *dmc, u32 *reg_timing_row,
static int of_get_dram_timings(struct exynos5_dmc *dmc)
{
int ret = 0;
+ struct device *dev = dmc->dev;
int idx;
- struct device_node *np_ddr;
u32 freq_mhz, clk_period_ps;
- np_ddr = of_parse_phandle(dmc->dev->of_node, "device-handle", 0);
+ struct device_node *np_ddr __free(device_node) =
+ of_parse_phandle(dev->of_node, "device-handle", 0);
if (!np_ddr) {
- dev_warn(dmc->dev, "could not find 'device-handle' in DT\n");
+ dev_warn(dev, "could not find 'device-handle' in DT\n");
return -EINVAL;
}
- dmc->timing_row = devm_kmalloc_array(dmc->dev, TIMING_COUNT,
+ dmc->timing_row = devm_kmalloc_array(dev, TIMING_COUNT,
sizeof(u32), GFP_KERNEL);
- if (!dmc->timing_row) {
- ret = -ENOMEM;
- goto put_node;
- }
+ if (!dmc->timing_row)
+ return -ENOMEM;
- dmc->timing_data = devm_kmalloc_array(dmc->dev, TIMING_COUNT,
+ dmc->timing_data = devm_kmalloc_array(dev, TIMING_COUNT,
sizeof(u32), GFP_KERNEL);
- if (!dmc->timing_data) {
- ret = -ENOMEM;
- goto put_node;
- }
+ if (!dmc->timing_data)
+ return -ENOMEM;
- dmc->timing_power = devm_kmalloc_array(dmc->dev, TIMING_COUNT,
+ dmc->timing_power = devm_kmalloc_array(dev, TIMING_COUNT,
sizeof(u32), GFP_KERNEL);
- if (!dmc->timing_power) {
- ret = -ENOMEM;
- goto put_node;
- }
+ if (!dmc->timing_power)
+ return -ENOMEM;
- dmc->timings = of_lpddr3_get_ddr_timings(np_ddr, dmc->dev,
+ dmc->timings = of_lpddr3_get_ddr_timings(np_ddr, dev,
DDR_TYPE_LPDDR3,
&dmc->timings_arr_size);
if (!dmc->timings) {
- dev_warn(dmc->dev, "could not get timings from DT\n");
- ret = -EINVAL;
- goto put_node;
+ dev_warn(dev, "could not get timings from DT\n");
+ return -EINVAL;
}
- dmc->min_tck = of_lpddr3_get_min_tck(np_ddr, dmc->dev);
+ dmc->min_tck = of_lpddr3_get_min_tck(np_ddr, dev);
if (!dmc->min_tck) {
- dev_warn(dmc->dev, "could not get tck from DT\n");
- ret = -EINVAL;
- goto put_node;
+ dev_warn(dev, "could not get tck from DT\n");
+ return -EINVAL;
}
/* Sorted array of OPPs with frequency ascending */
@@ -1239,8 +1234,6 @@ static int of_get_dram_timings(struct exynos5_dmc *dmc)
dmc->bypass_timing_data = dmc->timing_data[idx - 1];
dmc->bypass_timing_power = dmc->timing_power[idx - 1];
-put_node:
- of_node_put(np_ddr);
return ret;
}
@@ -1254,34 +1247,34 @@ put_node:
static int exynos5_dmc_init_clks(struct exynos5_dmc *dmc)
{
int ret;
+ struct device *dev = dmc->dev;
unsigned long target_volt = 0;
unsigned long target_rate = 0;
unsigned int tmp;
- dmc->fout_spll = devm_clk_get(dmc->dev, "fout_spll");
+ dmc->fout_spll = devm_clk_get(dev, "fout_spll");
if (IS_ERR(dmc->fout_spll))
return PTR_ERR(dmc->fout_spll);
- dmc->fout_bpll = devm_clk_get(dmc->dev, "fout_bpll");
+ dmc->fout_bpll = devm_clk_get(dev, "fout_bpll");
if (IS_ERR(dmc->fout_bpll))
return PTR_ERR(dmc->fout_bpll);
- dmc->mout_mclk_cdrex = devm_clk_get(dmc->dev, "mout_mclk_cdrex");
+ dmc->mout_mclk_cdrex = devm_clk_get(dev, "mout_mclk_cdrex");
if (IS_ERR(dmc->mout_mclk_cdrex))
return PTR_ERR(dmc->mout_mclk_cdrex);
- dmc->mout_bpll = devm_clk_get(dmc->dev, "mout_bpll");
+ dmc->mout_bpll = devm_clk_get(dev, "mout_bpll");
if (IS_ERR(dmc->mout_bpll))
return PTR_ERR(dmc->mout_bpll);
- dmc->mout_mx_mspll_ccore = devm_clk_get(dmc->dev,
- "mout_mx_mspll_ccore");
+ dmc->mout_mx_mspll_ccore = devm_clk_get(dev, "mout_mx_mspll_ccore");
if (IS_ERR(dmc->mout_mx_mspll_ccore))
return PTR_ERR(dmc->mout_mx_mspll_ccore);
- dmc->mout_spll = devm_clk_get(dmc->dev, "ff_dout_spll2");
+ dmc->mout_spll = devm_clk_get(dev, "ff_dout_spll2");
if (IS_ERR(dmc->mout_spll)) {
- dmc->mout_spll = devm_clk_get(dmc->dev, "mout_sclk_spll");
+ dmc->mout_spll = devm_clk_get(dev, "mout_sclk_spll");
if (IS_ERR(dmc->mout_spll))
return PTR_ERR(dmc->mout_spll);
}
@@ -1329,38 +1322,37 @@ static int exynos5_dmc_init_clks(struct exynos5_dmc *dmc)
*/
static int exynos5_performance_counters_init(struct exynos5_dmc *dmc)
{
+ struct device *dev = dmc->dev;
int ret, i;
- dmc->num_counters = devfreq_event_get_edev_count(dmc->dev,
- "devfreq-events");
+ dmc->num_counters = devfreq_event_get_edev_count(dev, "devfreq-events");
if (dmc->num_counters < 0) {
- dev_err(dmc->dev, "could not get devfreq-event counters\n");
+ dev_err(dev, "could not get devfreq-event counters\n");
return dmc->num_counters;
}
- dmc->counter = devm_kcalloc(dmc->dev, dmc->num_counters,
+ dmc->counter = devm_kcalloc(dev, dmc->num_counters,
sizeof(*dmc->counter), GFP_KERNEL);
if (!dmc->counter)
return -ENOMEM;
for (i = 0; i < dmc->num_counters; i++) {
dmc->counter[i] =
- devfreq_event_get_edev_by_phandle(dmc->dev,
- "devfreq-events", i);
+ devfreq_event_get_edev_by_phandle(dev, "devfreq-events", i);
if (IS_ERR_OR_NULL(dmc->counter[i]))
return -EPROBE_DEFER;
}
ret = exynos5_counters_enable_edev(dmc);
if (ret < 0) {
- dev_err(dmc->dev, "could not enable event counter\n");
+ dev_err(dev, "could not enable event counter\n");
return ret;
}
ret = exynos5_counters_set_event(dmc);
if (ret < 0) {
exynos5_counters_disable_edev(dmc);
- dev_err(dmc->dev, "could not set event counter\n");
+ dev_err(dev, "could not set event counter\n");
return ret;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 16:51:13 +0100