static void *votable_pll_clk_dt_parser(struct device *dev,
struct device_node *np)
{
struct pll_vote_clk *v, *peer;
struct clk *c;
u32 val, rc;
phandle p;
struct msmclk_data *drv;
v = devm_kzalloc(dev, sizeof(*v), GFP_KERNEL);
if (!v) {
dt_err(np, "memory alloc failure\n");
return ERR_PTR(-ENOMEM);
}
drv = msmclk_parse_phandle(dev, np->parent->phandle);
if (IS_ERR_OR_NULL(drv))
return ERR_CAST(drv);
v->base = &drv->base;
rc = of_property_read_u32(np, "qcom,en-offset", (u32 *)&v->en_reg);
if (rc) {
dt_err(np, "missing qcom,en-offset dt property\n");
return ERR_PTR(-EINVAL);
}
rc = of_property_read_u32(np, "qcom,en-bit", &val);
if (rc) {
dt_err(np, "missing qcom,en-bit dt property\n");
return ERR_PTR(-EINVAL);
}
v->en_mask = BIT(val);
rc = of_property_read_u32(np, "qcom,status-offset",
(u32 *)&v->status_reg);
if (rc) {
dt_err(np, "missing qcom,status-offset dt property\n");
return ERR_PTR(-EINVAL);
}
rc = of_property_read_u32(np, "qcom,status-bit", &val);
if (rc) {
dt_err(np, "missing qcom,status-bit dt property\n");
return ERR_PTR(-EINVAL);
}
v->status_mask = BIT(val);
rc = of_property_read_u32(np, "qcom,pll-config-rate", &val);
if (rc) {
dt_err(np, "missing qcom,pll-config-rate dt property\n");
return ERR_PTR(-EINVAL);
}
v->c.rate = val;
if (of_device_is_compatible(np, "qcom,active-only-pll"))
v->soft_vote_mask = PLL_SOFT_VOTE_ACPU;
else if (of_device_is_compatible(np, "qcom,sleep-active-pll"))
v->soft_vote_mask = PLL_SOFT_VOTE_PRIMARY;
if (of_device_is_compatible(np, "qcom,votable-pll")) {
v->c.ops = &clk_ops_pll_vote;
return msmclk_generic_clk_init(dev, np, &v->c);
}
rc = of_property_read_phandle_index(np, "qcom,peer", 0, &p);
if (rc) {
dt_err(np, "missing qcom,peer dt property\n");
return ERR_PTR(-EINVAL);
}
c = msmclk_lookup_phandle(dev, p);
if (!IS_ERR_OR_NULL(c)) {
v->soft_vote = devm_kzalloc(dev, sizeof(*v->soft_vote),
GFP_KERNEL);
if (!v->soft_vote) {
dt_err(np, "memory alloc failure\n");
return ERR_PTR(-ENOMEM);
}
peer = to_pll_vote_clk(c);
peer->soft_vote = v->soft_vote;
}
v->c.ops = &clk_ops_pll_acpu_vote;
return msmclk_generic_clk_init(dev, np, &v->c);
}
int enable_rpm_scaling(void)
{
int rc, value = 0x1;
static int is_inited;
struct msm_rpm_kvp kvp = {
.key = RPM_SMD_KEY_ENABLE,
.data = (void *)&value,
.length = sizeof(value),
};
if (is_inited)
return 0;
rc = msm_rpm_send_message_noirq(MSM_RPM_CTX_SLEEP_SET,
RPM_MISC_CLK_TYPE, RPM_SCALING_ENABLE_ID, &kvp, 1);
if (rc < 0) {
if (rc != -EPROBE_DEFER)
WARN(1, "RPM clock scaling (sleep set) did not enable!\n");
return rc;
}
rc = msm_rpm_send_message_noirq(MSM_RPM_CTX_ACTIVE_SET,
RPM_MISC_CLK_TYPE, RPM_SCALING_ENABLE_ID, &kvp, 1);
if (rc < 0) {
if (rc != -EPROBE_DEFER)
WARN(1, "RPM clock scaling (active set) did not enable!\n");
return rc;
}
is_inited++;
return 0;
}
struct clk_ops clk_ops_rpm = {
.prepare = rpm_clk_prepare,
.unprepare = rpm_clk_unprepare,
.set_rate = rpm_clk_set_rate,
.get_rate = rpm_clk_get_rate,
.is_enabled = rpm_clk_is_enabled,
.round_rate = rpm_clk_round_rate,
.is_local = rpm_clk_is_local,
.handoff = rpm_clk_handoff,
};
struct clk_ops clk_ops_rpm_branch = {
.prepare = rpm_clk_prepare,
.unprepare = rpm_clk_unprepare,
.is_local = rpm_clk_is_local,
.handoff = rpm_clk_handoff,
};
static struct rpm_clk *rpm_clk_dt_parser_common(struct device *dev,
struct device_node *np)
{
struct rpm_clk *rpm, *peer;
struct clk *c;
int rc = 0;
phandle p;
const char *str;
rpm = devm_kzalloc(dev, sizeof(*rpm), GFP_KERNEL);
if (!rpm) {
dt_err(np, "memory alloc failure\n");
return ERR_PTR(-ENOMEM);
}
rc = of_property_read_phandle_index(np, "qcom,rpm-peer", 0, &p);
if (rc) {
dt_err(np, "missing qcom,rpm-peer dt property\n");
return ERR_PTR(rc);
}
/* Rely on whoever's called last to setup the circular ref */
c = msmclk_lookup_phandle(dev, p);
if (!IS_ERR(c)) {
peer = to_rpm_clk(c);
peer->peer = rpm;
rpm->peer = peer;
}
rpm->rpmrs_data = &clk_rpmrs_data_smd;
rpm->active_only = of_device_is_compatible(np, "qcom,rpm-a-clk") ||
of_device_is_compatible(np, "qcom,rpm-branch-a-clk");
rc = of_property_read_string(np, "qcom,res-type", &str);
if (rc) {
dt_err(np, "missing qcom,res-type dt property\n");
return ERR_PTR(rc);
}
sscanf(str, "%4c", (char *) &rpm->rpm_res_type);
rc = of_property_read_u32(np, "qcom,res-id", &rpm->rpm_clk_id);
if (rc) {
dt_err(np, "missing qcom,res-id dt property\n");
return ERR_PTR(rc);
}
rc = of_property_read_string(np, "qcom,key", &str);
if (rc) {
dt_err(np, "missing qcom,key dt property\n");
return ERR_PTR(rc);
}
sscanf(str, "%4c", (char *) &rpm->rpm_key);
return rpm;
}
static void *rpm_clk_dt_parser(struct device *dev, struct device_node *np)
{
struct rpm_clk *rpm;
rpm = rpm_clk_dt_parser_common(dev, np);
if (IS_ERR(rpm))
return rpm;
rpm->c.ops = &clk_ops_rpm;
return msmclk_generic_clk_init(dev, np, &rpm->c);
}
static void *rpm_branch_clk_dt_parser(struct device *dev,
struct device_node *np)
{
struct rpm_clk *rpm;
u32 rate;
int rc;
rpm = rpm_clk_dt_parser_common(dev, np);
if (IS_ERR(rpm))
return rpm;
rpm->c.ops = &clk_ops_rpm_branch;
rpm->branch = true;
rc = of_property_read_u32(np, "qcom,rcg-init-rate", &rate);
if (!rc)
rpm->c.rate = rate;
return msmclk_generic_clk_init(dev, np, &rpm->c);
}
MSMCLK_PARSER(rpm_clk_dt_parser, "qcom,rpm-clk", 0);
MSMCLK_PARSER(rpm_clk_dt_parser, "qcom,rpm-a-clk", 1);
MSMCLK_PARSER(rpm_branch_clk_dt_parser, "qcom,rpm-branch-clk", 0);
MSMCLK_PARSER(rpm_branch_clk_dt_parser, "qcom,rpm-branch-a-clk", 1);
