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path: root/drivers/clk/qcom/clk-rpm.c
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-rw-r--r--drivers/clk/qcom/clk-rpm.c615
1 files changed, 615 insertions, 0 deletions
diff --git a/drivers/clk/qcom/clk-rpm.c b/drivers/clk/qcom/clk-rpm.c
new file mode 100644
index 0000000000..745026ef4d
--- /dev/null
+++ b/drivers/clk/qcom/clk-rpm.c
@@ -0,0 +1,615 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2016, Linaro Limited
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/mfd/qcom_rpm.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include <dt-bindings/mfd/qcom-rpm.h>
+#include <dt-bindings/clock/qcom,rpmcc.h>
+
+#define QCOM_RPM_MISC_CLK_TYPE 0x306b6c63
+#define QCOM_RPM_SCALING_ENABLE_ID 0x2
+#define QCOM_RPM_XO_MODE_ON 0x2
+
+static const struct clk_parent_data gcc_pxo[] = {
+ { .fw_name = "pxo", .name = "pxo_board" },
+};
+
+static const struct clk_parent_data gcc_cxo[] = {
+ { .fw_name = "cxo", .name = "cxo_board" },
+};
+
+#define DEFINE_CLK_RPM(_name, r_id) \
+ static struct clk_rpm clk_rpm_##_name##_a_clk; \
+ static struct clk_rpm clk_rpm_##_name##_clk = { \
+ .rpm_clk_id = (r_id), \
+ .peer = &clk_rpm_##_name##_a_clk, \
+ .rate = INT_MAX, \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_rpm_ops, \
+ .name = #_name "_clk", \
+ .parent_data = gcc_pxo, \
+ .num_parents = ARRAY_SIZE(gcc_pxo), \
+ }, \
+ }; \
+ static struct clk_rpm clk_rpm_##_name##_a_clk = { \
+ .rpm_clk_id = (r_id), \
+ .peer = &clk_rpm_##_name##_clk, \
+ .active_only = true, \
+ .rate = INT_MAX, \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_rpm_ops, \
+ .name = #_name "_a_clk", \
+ .parent_data = gcc_pxo, \
+ .num_parents = ARRAY_SIZE(gcc_pxo), \
+ }, \
+ }
+
+#define DEFINE_CLK_RPM_XO_BUFFER(_name, offset) \
+ static struct clk_rpm clk_rpm_##_name##_clk = { \
+ .rpm_clk_id = QCOM_RPM_CXO_BUFFERS, \
+ .xo_offset = (offset), \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_rpm_xo_ops, \
+ .name = #_name "_clk", \
+ .parent_data = gcc_cxo, \
+ .num_parents = ARRAY_SIZE(gcc_cxo), \
+ }, \
+ }
+
+#define DEFINE_CLK_RPM_FIXED(_name, r_id, r) \
+ static struct clk_rpm clk_rpm_##_name##_clk = { \
+ .rpm_clk_id = (r_id), \
+ .rate = (r), \
+ .hw.init = &(struct clk_init_data){ \
+ .ops = &clk_rpm_fixed_ops, \
+ .name = #_name "_clk", \
+ .parent_data = gcc_pxo, \
+ .num_parents = ARRAY_SIZE(gcc_pxo), \
+ }, \
+ }
+
+#define to_clk_rpm(_hw) container_of(_hw, struct clk_rpm, hw)
+
+struct rpm_cc;
+
+struct clk_rpm {
+ const int rpm_clk_id;
+ const int xo_offset;
+ const bool active_only;
+ unsigned long rate;
+ bool enabled;
+ bool branch;
+ struct clk_rpm *peer;
+ struct clk_hw hw;
+ struct qcom_rpm *rpm;
+ struct rpm_cc *rpm_cc;
+};
+
+struct rpm_cc {
+ struct qcom_rpm *rpm;
+ struct clk_rpm **clks;
+ size_t num_clks;
+ u32 xo_buffer_value;
+ struct mutex xo_lock;
+};
+
+struct rpm_clk_desc {
+ struct clk_rpm **clks;
+ size_t num_clks;
+};
+
+static DEFINE_MUTEX(rpm_clk_lock);
+
+static int clk_rpm_handoff(struct clk_rpm *r)
+{
+ int ret;
+ u32 value = INT_MAX;
+
+ /*
+ * The vendor tree simply reads the status for this
+ * RPM clock.
+ */
+ if (r->rpm_clk_id == QCOM_RPM_PLL_4 ||
+ r->rpm_clk_id == QCOM_RPM_CXO_BUFFERS)
+ return 0;
+
+ ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE,
+ r->rpm_clk_id, &value, 1);
+ if (ret)
+ return ret;
+ ret = qcom_rpm_write(r->rpm, QCOM_RPM_SLEEP_STATE,
+ r->rpm_clk_id, &value, 1);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int clk_rpm_set_rate_active(struct clk_rpm *r, unsigned long rate)
+{
+ u32 value = DIV_ROUND_UP(rate, 1000); /* to kHz */
+
+ return qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE,
+ r->rpm_clk_id, &value, 1);
+}
+
+static int clk_rpm_set_rate_sleep(struct clk_rpm *r, unsigned long rate)
+{
+ u32 value = DIV_ROUND_UP(rate, 1000); /* to kHz */
+
+ return qcom_rpm_write(r->rpm, QCOM_RPM_SLEEP_STATE,
+ r->rpm_clk_id, &value, 1);
+}
+
+static void to_active_sleep(struct clk_rpm *r, unsigned long rate,
+ unsigned long *active, unsigned long *sleep)
+{
+ *active = rate;
+
+ /*
+ * Active-only clocks don't care what the rate is during sleep. So,
+ * they vote for zero.
+ */
+ if (r->active_only)
+ *sleep = 0;
+ else
+ *sleep = *active;
+}
+
+static int clk_rpm_prepare(struct clk_hw *hw)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+ struct clk_rpm *peer = r->peer;
+ unsigned long this_rate = 0, this_sleep_rate = 0;
+ unsigned long peer_rate = 0, peer_sleep_rate = 0;
+ unsigned long active_rate, sleep_rate;
+ int ret = 0;
+
+ mutex_lock(&rpm_clk_lock);
+
+ /* Don't send requests to the RPM if the rate has not been set. */
+ if (!r->rate)
+ goto out;
+
+ to_active_sleep(r, r->rate, &this_rate, &this_sleep_rate);
+
+ /* Take peer clock's rate into account only if it's enabled. */
+ if (peer->enabled)
+ to_active_sleep(peer, peer->rate,
+ &peer_rate, &peer_sleep_rate);
+
+ active_rate = max(this_rate, peer_rate);
+
+ if (r->branch)
+ active_rate = !!active_rate;
+
+ ret = clk_rpm_set_rate_active(r, active_rate);
+ if (ret)
+ goto out;
+
+ sleep_rate = max(this_sleep_rate, peer_sleep_rate);
+ if (r->branch)
+ sleep_rate = !!sleep_rate;
+
+ ret = clk_rpm_set_rate_sleep(r, sleep_rate);
+ if (ret)
+ /* Undo the active set vote and restore it */
+ ret = clk_rpm_set_rate_active(r, peer_rate);
+
+out:
+ if (!ret)
+ r->enabled = true;
+
+ mutex_unlock(&rpm_clk_lock);
+
+ return ret;
+}
+
+static void clk_rpm_unprepare(struct clk_hw *hw)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+ struct clk_rpm *peer = r->peer;
+ unsigned long peer_rate = 0, peer_sleep_rate = 0;
+ unsigned long active_rate, sleep_rate;
+ int ret;
+
+ mutex_lock(&rpm_clk_lock);
+
+ if (!r->rate)
+ goto out;
+
+ /* Take peer clock's rate into account only if it's enabled. */
+ if (peer->enabled)
+ to_active_sleep(peer, peer->rate, &peer_rate,
+ &peer_sleep_rate);
+
+ active_rate = r->branch ? !!peer_rate : peer_rate;
+ ret = clk_rpm_set_rate_active(r, active_rate);
+ if (ret)
+ goto out;
+
+ sleep_rate = r->branch ? !!peer_sleep_rate : peer_sleep_rate;
+ ret = clk_rpm_set_rate_sleep(r, sleep_rate);
+ if (ret)
+ goto out;
+
+ r->enabled = false;
+
+out:
+ mutex_unlock(&rpm_clk_lock);
+}
+
+static int clk_rpm_xo_prepare(struct clk_hw *hw)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+ struct rpm_cc *rcc = r->rpm_cc;
+ int ret, clk_id = r->rpm_clk_id;
+ u32 value;
+
+ mutex_lock(&rcc->xo_lock);
+
+ value = rcc->xo_buffer_value | (QCOM_RPM_XO_MODE_ON << r->xo_offset);
+ ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, clk_id, &value, 1);
+ if (!ret) {
+ r->enabled = true;
+ rcc->xo_buffer_value = value;
+ }
+
+ mutex_unlock(&rcc->xo_lock);
+
+ return ret;
+}
+
+static void clk_rpm_xo_unprepare(struct clk_hw *hw)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+ struct rpm_cc *rcc = r->rpm_cc;
+ int ret, clk_id = r->rpm_clk_id;
+ u32 value;
+
+ mutex_lock(&rcc->xo_lock);
+
+ value = rcc->xo_buffer_value & ~(QCOM_RPM_XO_MODE_ON << r->xo_offset);
+ ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE, clk_id, &value, 1);
+ if (!ret) {
+ r->enabled = false;
+ rcc->xo_buffer_value = value;
+ }
+
+ mutex_unlock(&rcc->xo_lock);
+}
+
+static int clk_rpm_fixed_prepare(struct clk_hw *hw)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+ u32 value = 1;
+ int ret;
+
+ ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE,
+ r->rpm_clk_id, &value, 1);
+ if (!ret)
+ r->enabled = true;
+
+ return ret;
+}
+
+static void clk_rpm_fixed_unprepare(struct clk_hw *hw)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+ u32 value = 0;
+ int ret;
+
+ ret = qcom_rpm_write(r->rpm, QCOM_RPM_ACTIVE_STATE,
+ r->rpm_clk_id, &value, 1);
+ if (!ret)
+ r->enabled = false;
+}
+
+static int clk_rpm_set_rate(struct clk_hw *hw,
+ unsigned long rate, unsigned long parent_rate)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+ struct clk_rpm *peer = r->peer;
+ unsigned long active_rate, sleep_rate;
+ unsigned long this_rate = 0, this_sleep_rate = 0;
+ unsigned long peer_rate = 0, peer_sleep_rate = 0;
+ int ret = 0;
+
+ mutex_lock(&rpm_clk_lock);
+
+ if (!r->enabled)
+ goto out;
+
+ to_active_sleep(r, rate, &this_rate, &this_sleep_rate);
+
+ /* Take peer clock's rate into account only if it's enabled. */
+ if (peer->enabled)
+ to_active_sleep(peer, peer->rate,
+ &peer_rate, &peer_sleep_rate);
+
+ active_rate = max(this_rate, peer_rate);
+ ret = clk_rpm_set_rate_active(r, active_rate);
+ if (ret)
+ goto out;
+
+ sleep_rate = max(this_sleep_rate, peer_sleep_rate);
+ ret = clk_rpm_set_rate_sleep(r, sleep_rate);
+ if (ret)
+ goto out;
+
+ r->rate = rate;
+
+out:
+ mutex_unlock(&rpm_clk_lock);
+
+ return ret;
+}
+
+static long clk_rpm_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ /*
+ * RPM handles rate rounding and we don't have a way to
+ * know what the rate will be, so just return whatever
+ * rate is requested.
+ */
+ return rate;
+}
+
+static unsigned long clk_rpm_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_rpm *r = to_clk_rpm(hw);
+
+ /*
+ * RPM handles rate rounding and we don't have a way to
+ * know what the rate will be, so just return whatever
+ * rate was set.
+ */
+ return r->rate;
+}
+
+static const struct clk_ops clk_rpm_xo_ops = {
+ .prepare = clk_rpm_xo_prepare,
+ .unprepare = clk_rpm_xo_unprepare,
+};
+
+static const struct clk_ops clk_rpm_fixed_ops = {
+ .prepare = clk_rpm_fixed_prepare,
+ .unprepare = clk_rpm_fixed_unprepare,
+ .round_rate = clk_rpm_round_rate,
+ .recalc_rate = clk_rpm_recalc_rate,
+};
+
+static const struct clk_ops clk_rpm_ops = {
+ .prepare = clk_rpm_prepare,
+ .unprepare = clk_rpm_unprepare,
+ .set_rate = clk_rpm_set_rate,
+ .round_rate = clk_rpm_round_rate,
+ .recalc_rate = clk_rpm_recalc_rate,
+};
+
+DEFINE_CLK_RPM(afab, QCOM_RPM_APPS_FABRIC_CLK);
+DEFINE_CLK_RPM(sfab, QCOM_RPM_SYS_FABRIC_CLK);
+DEFINE_CLK_RPM(mmfab, QCOM_RPM_MM_FABRIC_CLK);
+DEFINE_CLK_RPM(daytona, QCOM_RPM_DAYTONA_FABRIC_CLK);
+DEFINE_CLK_RPM(sfpb, QCOM_RPM_SFPB_CLK);
+DEFINE_CLK_RPM(cfpb, QCOM_RPM_CFPB_CLK);
+DEFINE_CLK_RPM(mmfpb, QCOM_RPM_MMFPB_CLK);
+DEFINE_CLK_RPM(smi, QCOM_RPM_SMI_CLK);
+DEFINE_CLK_RPM(ebi1, QCOM_RPM_EBI1_CLK);
+
+DEFINE_CLK_RPM(qdss, QCOM_RPM_QDSS_CLK);
+DEFINE_CLK_RPM(nss_fabric_0, QCOM_RPM_NSS_FABRIC_0_CLK);
+DEFINE_CLK_RPM(nss_fabric_1, QCOM_RPM_NSS_FABRIC_1_CLK);
+
+DEFINE_CLK_RPM_FIXED(pll4, QCOM_RPM_PLL_4, 540672000);
+
+DEFINE_CLK_RPM_XO_BUFFER(xo_d0, 0);
+DEFINE_CLK_RPM_XO_BUFFER(xo_d1, 8);
+DEFINE_CLK_RPM_XO_BUFFER(xo_a0, 16);
+DEFINE_CLK_RPM_XO_BUFFER(xo_a1, 24);
+DEFINE_CLK_RPM_XO_BUFFER(xo_a2, 28);
+
+static struct clk_rpm *msm8660_clks[] = {
+ [RPM_APPS_FABRIC_CLK] = &clk_rpm_afab_clk,
+ [RPM_APPS_FABRIC_A_CLK] = &clk_rpm_afab_a_clk,
+ [RPM_SYS_FABRIC_CLK] = &clk_rpm_sfab_clk,
+ [RPM_SYS_FABRIC_A_CLK] = &clk_rpm_sfab_a_clk,
+ [RPM_MM_FABRIC_CLK] = &clk_rpm_mmfab_clk,
+ [RPM_MM_FABRIC_A_CLK] = &clk_rpm_mmfab_a_clk,
+ [RPM_DAYTONA_FABRIC_CLK] = &clk_rpm_daytona_clk,
+ [RPM_DAYTONA_FABRIC_A_CLK] = &clk_rpm_daytona_a_clk,
+ [RPM_SFPB_CLK] = &clk_rpm_sfpb_clk,
+ [RPM_SFPB_A_CLK] = &clk_rpm_sfpb_a_clk,
+ [RPM_CFPB_CLK] = &clk_rpm_cfpb_clk,
+ [RPM_CFPB_A_CLK] = &clk_rpm_cfpb_a_clk,
+ [RPM_MMFPB_CLK] = &clk_rpm_mmfpb_clk,
+ [RPM_MMFPB_A_CLK] = &clk_rpm_mmfpb_a_clk,
+ [RPM_SMI_CLK] = &clk_rpm_smi_clk,
+ [RPM_SMI_A_CLK] = &clk_rpm_smi_a_clk,
+ [RPM_EBI1_CLK] = &clk_rpm_ebi1_clk,
+ [RPM_EBI1_A_CLK] = &clk_rpm_ebi1_a_clk,
+ [RPM_PLL4_CLK] = &clk_rpm_pll4_clk,
+};
+
+static const struct rpm_clk_desc rpm_clk_msm8660 = {
+ .clks = msm8660_clks,
+ .num_clks = ARRAY_SIZE(msm8660_clks),
+};
+
+static struct clk_rpm *apq8064_clks[] = {
+ [RPM_APPS_FABRIC_CLK] = &clk_rpm_afab_clk,
+ [RPM_APPS_FABRIC_A_CLK] = &clk_rpm_afab_a_clk,
+ [RPM_CFPB_CLK] = &clk_rpm_cfpb_clk,
+ [RPM_CFPB_A_CLK] = &clk_rpm_cfpb_a_clk,
+ [RPM_DAYTONA_FABRIC_CLK] = &clk_rpm_daytona_clk,
+ [RPM_DAYTONA_FABRIC_A_CLK] = &clk_rpm_daytona_a_clk,
+ [RPM_EBI1_CLK] = &clk_rpm_ebi1_clk,
+ [RPM_EBI1_A_CLK] = &clk_rpm_ebi1_a_clk,
+ [RPM_MM_FABRIC_CLK] = &clk_rpm_mmfab_clk,
+ [RPM_MM_FABRIC_A_CLK] = &clk_rpm_mmfab_a_clk,
+ [RPM_MMFPB_CLK] = &clk_rpm_mmfpb_clk,
+ [RPM_MMFPB_A_CLK] = &clk_rpm_mmfpb_a_clk,
+ [RPM_SYS_FABRIC_CLK] = &clk_rpm_sfab_clk,
+ [RPM_SYS_FABRIC_A_CLK] = &clk_rpm_sfab_a_clk,
+ [RPM_SFPB_CLK] = &clk_rpm_sfpb_clk,
+ [RPM_SFPB_A_CLK] = &clk_rpm_sfpb_a_clk,
+ [RPM_QDSS_CLK] = &clk_rpm_qdss_clk,
+ [RPM_QDSS_A_CLK] = &clk_rpm_qdss_a_clk,
+ [RPM_XO_D0] = &clk_rpm_xo_d0_clk,
+ [RPM_XO_D1] = &clk_rpm_xo_d1_clk,
+ [RPM_XO_A0] = &clk_rpm_xo_a0_clk,
+ [RPM_XO_A1] = &clk_rpm_xo_a1_clk,
+ [RPM_XO_A2] = &clk_rpm_xo_a2_clk,
+};
+
+static const struct rpm_clk_desc rpm_clk_apq8064 = {
+ .clks = apq8064_clks,
+ .num_clks = ARRAY_SIZE(apq8064_clks),
+};
+
+static struct clk_rpm *ipq806x_clks[] = {
+ [RPM_APPS_FABRIC_CLK] = &clk_rpm_afab_clk,
+ [RPM_APPS_FABRIC_A_CLK] = &clk_rpm_afab_a_clk,
+ [RPM_CFPB_CLK] = &clk_rpm_cfpb_clk,
+ [RPM_CFPB_A_CLK] = &clk_rpm_cfpb_a_clk,
+ [RPM_DAYTONA_FABRIC_CLK] = &clk_rpm_daytona_clk,
+ [RPM_DAYTONA_FABRIC_A_CLK] = &clk_rpm_daytona_a_clk,
+ [RPM_EBI1_CLK] = &clk_rpm_ebi1_clk,
+ [RPM_EBI1_A_CLK] = &clk_rpm_ebi1_a_clk,
+ [RPM_SYS_FABRIC_CLK] = &clk_rpm_sfab_clk,
+ [RPM_SYS_FABRIC_A_CLK] = &clk_rpm_sfab_a_clk,
+ [RPM_SFPB_CLK] = &clk_rpm_sfpb_clk,
+ [RPM_SFPB_A_CLK] = &clk_rpm_sfpb_a_clk,
+ [RPM_NSS_FABRIC_0_CLK] = &clk_rpm_nss_fabric_0_clk,
+ [RPM_NSS_FABRIC_0_A_CLK] = &clk_rpm_nss_fabric_0_a_clk,
+ [RPM_NSS_FABRIC_1_CLK] = &clk_rpm_nss_fabric_1_clk,
+ [RPM_NSS_FABRIC_1_A_CLK] = &clk_rpm_nss_fabric_1_a_clk,
+};
+
+static const struct rpm_clk_desc rpm_clk_ipq806x = {
+ .clks = ipq806x_clks,
+ .num_clks = ARRAY_SIZE(ipq806x_clks),
+};
+
+static const struct of_device_id rpm_clk_match_table[] = {
+ { .compatible = "qcom,rpmcc-msm8660", .data = &rpm_clk_msm8660 },
+ { .compatible = "qcom,rpmcc-apq8060", .data = &rpm_clk_msm8660 },
+ { .compatible = "qcom,rpmcc-apq8064", .data = &rpm_clk_apq8064 },
+ { .compatible = "qcom,rpmcc-ipq806x", .data = &rpm_clk_ipq806x },
+ { }
+};
+MODULE_DEVICE_TABLE(of, rpm_clk_match_table);
+
+static struct clk_hw *qcom_rpm_clk_hw_get(struct of_phandle_args *clkspec,
+ void *data)
+{
+ struct rpm_cc *rcc = data;
+ unsigned int idx = clkspec->args[0];
+
+ if (idx >= rcc->num_clks) {
+ pr_err("%s: invalid index %u\n", __func__, idx);
+ return ERR_PTR(-EINVAL);
+ }
+
+ return rcc->clks[idx] ? &rcc->clks[idx]->hw : ERR_PTR(-ENOENT);
+}
+
+static int rpm_clk_probe(struct platform_device *pdev)
+{
+ struct rpm_cc *rcc;
+ int ret;
+ size_t num_clks, i;
+ struct qcom_rpm *rpm;
+ struct clk_rpm **rpm_clks;
+ const struct rpm_clk_desc *desc;
+
+ rpm = dev_get_drvdata(pdev->dev.parent);
+ if (!rpm) {
+ dev_err(&pdev->dev, "Unable to retrieve handle to RPM\n");
+ return -ENODEV;
+ }
+
+ desc = of_device_get_match_data(&pdev->dev);
+ if (!desc)
+ return -EINVAL;
+
+ rpm_clks = desc->clks;
+ num_clks = desc->num_clks;
+
+ rcc = devm_kzalloc(&pdev->dev, sizeof(*rcc), GFP_KERNEL);
+ if (!rcc)
+ return -ENOMEM;
+
+ rcc->clks = rpm_clks;
+ rcc->num_clks = num_clks;
+ mutex_init(&rcc->xo_lock);
+
+ for (i = 0; i < num_clks; i++) {
+ if (!rpm_clks[i])
+ continue;
+
+ rpm_clks[i]->rpm = rpm;
+ rpm_clks[i]->rpm_cc = rcc;
+
+ ret = clk_rpm_handoff(rpm_clks[i]);
+ if (ret)
+ goto err;
+ }
+
+ for (i = 0; i < num_clks; i++) {
+ if (!rpm_clks[i])
+ continue;
+
+ ret = devm_clk_hw_register(&pdev->dev, &rpm_clks[i]->hw);
+ if (ret)
+ goto err;
+ }
+
+ ret = devm_of_clk_add_hw_provider(&pdev->dev, qcom_rpm_clk_hw_get,
+ rcc);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_err(&pdev->dev, "Error registering RPM Clock driver (%d)\n", ret);
+ return ret;
+}
+
+static struct platform_driver rpm_clk_driver = {
+ .driver = {
+ .name = "qcom-clk-rpm",
+ .of_match_table = rpm_clk_match_table,
+ },
+ .probe = rpm_clk_probe,
+};
+
+static int __init rpm_clk_init(void)
+{
+ return platform_driver_register(&rpm_clk_driver);
+}
+core_initcall(rpm_clk_init);
+
+static void __exit rpm_clk_exit(void)
+{
+ platform_driver_unregister(&rpm_clk_driver);
+}
+module_exit(rpm_clk_exit);
+
+MODULE_DESCRIPTION("Qualcomm RPM Clock Controller Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:qcom-clk-rpm");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 23:19:24 +0000