+++ /dev/null
-From 41ee71bae788e1858c0a387d010c342e6bb3f4b0 Mon Sep 17 00:00:00 2001
-From: Georgi Djakov <georgi.djakov@linaro.org>
-Date: Wed, 2 Nov 2016 17:56:56 +0200
-Subject: [PATCH 27/69] clk: qcom: Add support for SMD-RPM Clocks
-
-This adds initial support for clocks controlled by the Resource
-Power Manager (RPM) processor on some Qualcomm SoCs, which use
-the qcom_smd_rpm driver to communicate with RPM.
-Such platforms are msm8916, apq8084 and msm8974.
-
-The RPM is a dedicated hardware engine for managing the shared
-SoC resources in order to keep the lowest power profile. It
-communicates with other hardware subsystems via shared memory
-and accepts clock requests, aggregates the requests and turns
-the clocks on/off or scales them on demand.
-
-This driver is based on the codeaurora.org driver:
-https://www.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/clk/qcom/clock-rpm.c
-
-Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
----
- .../devicetree/bindings/clock/qcom,rpmcc.txt | 36 ++
- drivers/clk/qcom/Kconfig | 16 +
- drivers/clk/qcom/Makefile | 1 +
- drivers/clk/qcom/clk-smd-rpm.c | 571 +++++++++++++++++++++
- include/dt-bindings/clock/qcom,rpmcc.h | 45 ++
- 5 files changed, 669 insertions(+)
- create mode 100644 Documentation/devicetree/bindings/clock/qcom,rpmcc.txt
- create mode 100644 drivers/clk/qcom/clk-smd-rpm.c
- create mode 100644 include/dt-bindings/clock/qcom,rpmcc.h
-
---- /dev/null
-+++ b/Documentation/devicetree/bindings/clock/qcom,rpmcc.txt
-@@ -0,0 +1,36 @@
-+Qualcomm RPM Clock Controller Binding
-+------------------------------------------------
-+The RPM is a dedicated hardware engine for managing the shared
-+SoC resources in order to keep the lowest power profile. It
-+communicates with other hardware subsystems via shared memory
-+and accepts clock requests, aggregates the requests and turns
-+the clocks on/off or scales them on demand.
-+
-+Required properties :
-+- compatible : shall contain only one of the following. The generic
-+ compatible "qcom,rpmcc" should be also included.
-+
-+ "qcom,rpmcc-msm8916", "qcom,rpmcc"
-+
-+- #clock-cells : shall contain 1
-+
-+Example:
-+ smd {
-+ compatible = "qcom,smd";
-+
-+ rpm {
-+ interrupts = <0 168 1>;
-+ qcom,ipc = <&apcs 8 0>;
-+ qcom,smd-edge = <15>;
-+
-+ rpm_requests {
-+ compatible = "qcom,rpm-msm8916";
-+ qcom,smd-channels = "rpm_requests";
-+
-+ rpmcc: clock-controller {
-+ compatible = "qcom,rpmcc-msm8916", "qcom,rpmcc";
-+ #clock-cells = <1>;
-+ };
-+ };
-+ };
-+ };
---- a/drivers/clk/qcom/Kconfig
-+++ b/drivers/clk/qcom/Kconfig
-@@ -2,6 +2,9 @@ config QCOM_GDSC
- bool
- select PM_GENERIC_DOMAINS if PM
-
-+config QCOM_RPMCC
-+ bool
-+
- config COMMON_CLK_QCOM
- tristate "Support for Qualcomm's clock controllers"
- depends on OF
-@@ -9,6 +12,19 @@ config COMMON_CLK_QCOM
- select REGMAP_MMIO
- select RESET_CONTROLLER
-
-+config QCOM_CLK_SMD_RPM
-+ tristate "RPM over SMD based Clock Controller"
-+ depends on COMMON_CLK_QCOM && QCOM_SMD_RPM
-+ select QCOM_RPMCC
-+ help
-+ The RPM (Resource Power Manager) is a dedicated hardware engine for
-+ managing the shared SoC resources in order to keep the lowest power
-+ profile. It communicates with other hardware subsystems via shared
-+ memory and accepts clock requests, aggregates the requests and turns
-+ the clocks on/off or scales them on demand.
-+ Say Y if you want to support the clocks exposed by the RPM on
-+ platforms such as apq8016, apq8084, msm8974 etc.
-+
- config APQ_GCC_8084
- tristate "APQ8084 Global Clock Controller"
- select QCOM_GDSC
---- a/drivers/clk/qcom/Makefile
-+++ b/drivers/clk/qcom/Makefile
-@@ -29,3 +29,4 @@ obj-$(CONFIG_MSM_LCC_8960) += lcc-msm896
- obj-$(CONFIG_MSM_MMCC_8960) += mmcc-msm8960.o
- obj-$(CONFIG_MSM_MMCC_8974) += mmcc-msm8974.o
- obj-$(CONFIG_MSM_MMCC_8996) += mmcc-msm8996.o
-+obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o
---- /dev/null
-+++ b/drivers/clk/qcom/clk-smd-rpm.c
-@@ -0,0 +1,571 @@
-+/*
-+ * Copyright (c) 2016, Linaro Limited
-+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
-+ *
-+ * This software is licensed under the terms of the GNU General Public
-+ * License version 2, as published by the Free Software Foundation, and
-+ * may be copied, distributed, and modified under those terms.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#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/of.h>
-+#include <linux/of_device.h>
-+#include <linux/platform_device.h>
-+#include <linux/soc/qcom/smd-rpm.h>
-+
-+#include <dt-bindings/clock/qcom,rpmcc.h>
-+#include <dt-bindings/mfd/qcom-rpm.h>
-+
-+#define QCOM_RPM_KEY_SOFTWARE_ENABLE 0x6e657773
-+#define QCOM_RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY 0x62636370
-+#define QCOM_RPM_SMD_KEY_RATE 0x007a484b
-+#define QCOM_RPM_SMD_KEY_ENABLE 0x62616e45
-+#define QCOM_RPM_SMD_KEY_STATE 0x54415453
-+#define QCOM_RPM_SCALING_ENABLE_ID 0x2
-+
-+#define __DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id, stat_id, \
-+ key) \
-+ static struct clk_smd_rpm _platform##_##_active; \
-+ static struct clk_smd_rpm _platform##_##_name = { \
-+ .rpm_res_type = (type), \
-+ .rpm_clk_id = (r_id), \
-+ .rpm_status_id = (stat_id), \
-+ .rpm_key = (key), \
-+ .peer = &_platform##_##_active, \
-+ .rate = INT_MAX, \
-+ .hw.init = &(struct clk_init_data){ \
-+ .ops = &clk_smd_rpm_ops, \
-+ .name = #_name, \
-+ .parent_names = (const char *[]){ "xo_board" }, \
-+ .num_parents = 1, \
-+ }, \
-+ }; \
-+ static struct clk_smd_rpm _platform##_##_active = { \
-+ .rpm_res_type = (type), \
-+ .rpm_clk_id = (r_id), \
-+ .rpm_status_id = (stat_id), \
-+ .active_only = true, \
-+ .rpm_key = (key), \
-+ .peer = &_platform##_##_name, \
-+ .rate = INT_MAX, \
-+ .hw.init = &(struct clk_init_data){ \
-+ .ops = &clk_smd_rpm_ops, \
-+ .name = #_active, \
-+ .parent_names = (const char *[]){ "xo_board" }, \
-+ .num_parents = 1, \
-+ }, \
-+ }
-+
-+#define __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, type, r_id, \
-+ stat_id, r, key) \
-+ static struct clk_smd_rpm _platform##_##_active; \
-+ static struct clk_smd_rpm _platform##_##_name = { \
-+ .rpm_res_type = (type), \
-+ .rpm_clk_id = (r_id), \
-+ .rpm_status_id = (stat_id), \
-+ .rpm_key = (key), \
-+ .branch = true, \
-+ .peer = &_platform##_##_active, \
-+ .rate = (r), \
-+ .hw.init = &(struct clk_init_data){ \
-+ .ops = &clk_smd_rpm_branch_ops, \
-+ .name = #_name, \
-+ .parent_names = (const char *[]){ "xo_board" }, \
-+ .num_parents = 1, \
-+ }, \
-+ }; \
-+ static struct clk_smd_rpm _platform##_##_active = { \
-+ .rpm_res_type = (type), \
-+ .rpm_clk_id = (r_id), \
-+ .rpm_status_id = (stat_id), \
-+ .active_only = true, \
-+ .rpm_key = (key), \
-+ .branch = true, \
-+ .peer = &_platform##_##_name, \
-+ .rate = (r), \
-+ .hw.init = &(struct clk_init_data){ \
-+ .ops = &clk_smd_rpm_branch_ops, \
-+ .name = #_active, \
-+ .parent_names = (const char *[]){ "xo_board" }, \
-+ .num_parents = 1, \
-+ }, \
-+ }
-+
-+#define DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id) \
-+ __DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id, \
-+ 0, QCOM_RPM_SMD_KEY_RATE)
-+
-+#define DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, type, r_id, r) \
-+ __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, type, \
-+ r_id, 0, r, QCOM_RPM_SMD_KEY_ENABLE)
-+
-+#define DEFINE_CLK_SMD_RPM_QDSS(_platform, _name, _active, type, r_id) \
-+ __DEFINE_CLK_SMD_RPM(_platform, _name, _active, type, r_id, \
-+ 0, QCOM_RPM_SMD_KEY_STATE)
-+
-+#define DEFINE_CLK_SMD_RPM_XO_BUFFER(_platform, _name, _active, r_id) \
-+ __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, \
-+ QCOM_SMD_RPM_CLK_BUF_A, r_id, 0, 1000, \
-+ QCOM_RPM_KEY_SOFTWARE_ENABLE)
-+
-+#define DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(_platform, _name, _active, r_id) \
-+ __DEFINE_CLK_SMD_RPM_BRANCH(_platform, _name, _active, \
-+ QCOM_SMD_RPM_CLK_BUF_A, r_id, 0, 1000, \
-+ QCOM_RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY)
-+
-+#define to_clk_smd_rpm(_hw) container_of(_hw, struct clk_smd_rpm, hw)
-+
-+struct clk_smd_rpm {
-+ const int rpm_res_type;
-+ const int rpm_key;
-+ const int rpm_clk_id;
-+ const int rpm_status_id;
-+ const bool active_only;
-+ bool enabled;
-+ bool branch;
-+ struct clk_smd_rpm *peer;
-+ struct clk_hw hw;
-+ unsigned long rate;
-+ struct qcom_smd_rpm *rpm;
-+};
-+
-+struct clk_smd_rpm_req {
-+ __le32 key;
-+ __le32 nbytes;
-+ __le32 value;
-+};
-+
-+struct rpm_cc {
-+ struct qcom_rpm *rpm;
-+ struct clk_hw_onecell_data data;
-+ struct clk_hw *hws[];
-+};
-+
-+struct rpm_smd_clk_desc {
-+ struct clk_smd_rpm **clks;
-+ size_t num_clks;
-+};
-+
-+static DEFINE_MUTEX(rpm_smd_clk_lock);
-+
-+static int clk_smd_rpm_handoff(struct clk_smd_rpm *r)
-+{
-+ int ret;
-+ struct clk_smd_rpm_req req = {
-+ .key = cpu_to_le32(r->rpm_key),
-+ .nbytes = cpu_to_le32(sizeof(u32)),
-+ .value = cpu_to_le32(INT_MAX),
-+ };
-+
-+ ret = qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_ACTIVE_STATE,
-+ r->rpm_res_type, r->rpm_clk_id, &req,
-+ sizeof(req));
-+ if (ret)
-+ return ret;
-+ ret = qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_SLEEP_STATE,
-+ r->rpm_res_type, r->rpm_clk_id, &req,
-+ sizeof(req));
-+ if (ret)
-+ return ret;
-+
-+ return 0;
-+}
-+
-+static int clk_smd_rpm_set_rate_active(struct clk_smd_rpm *r,
-+ unsigned long rate)
-+{
-+ struct clk_smd_rpm_req req = {
-+ .key = cpu_to_le32(r->rpm_key),
-+ .nbytes = cpu_to_le32(sizeof(u32)),
-+ .value = cpu_to_le32(DIV_ROUND_UP(rate, 1000)), /* to kHz */
-+ };
-+
-+ return qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_ACTIVE_STATE,
-+ r->rpm_res_type, r->rpm_clk_id, &req,
-+ sizeof(req));
-+}
-+
-+static int clk_smd_rpm_set_rate_sleep(struct clk_smd_rpm *r,
-+ unsigned long rate)
-+{
-+ struct clk_smd_rpm_req req = {
-+ .key = cpu_to_le32(r->rpm_key),
-+ .nbytes = cpu_to_le32(sizeof(u32)),
-+ .value = cpu_to_le32(DIV_ROUND_UP(rate, 1000)), /* to kHz */
-+ };
-+
-+ return qcom_rpm_smd_write(r->rpm, QCOM_SMD_RPM_SLEEP_STATE,
-+ r->rpm_res_type, r->rpm_clk_id, &req,
-+ sizeof(req));
-+}
-+
-+static void to_active_sleep(struct clk_smd_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_smd_rpm_prepare(struct clk_hw *hw)
-+{
-+ struct clk_smd_rpm *r = to_clk_smd_rpm(hw);
-+ struct clk_smd_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_smd_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_smd_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_smd_rpm_set_rate_sleep(r, sleep_rate);
-+ if (ret)
-+ /* Undo the active set vote and restore it */
-+ ret = clk_smd_rpm_set_rate_active(r, peer_rate);
-+
-+out:
-+ if (!ret)
-+ r->enabled = true;
-+
-+ mutex_unlock(&rpm_smd_clk_lock);
-+
-+ return ret;
-+}
-+
-+static void clk_smd_rpm_unprepare(struct clk_hw *hw)
-+{
-+ struct clk_smd_rpm *r = to_clk_smd_rpm(hw);
-+ struct clk_smd_rpm *peer = r->peer;
-+ unsigned long peer_rate = 0, peer_sleep_rate = 0;
-+ unsigned long active_rate, sleep_rate;
-+ int ret;
-+
-+ mutex_lock(&rpm_smd_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_smd_rpm_set_rate_active(r, active_rate);
-+ if (ret)
-+ goto out;
-+
-+ sleep_rate = r->branch ? !!peer_sleep_rate : peer_sleep_rate;
-+ ret = clk_smd_rpm_set_rate_sleep(r, sleep_rate);
-+ if (ret)
-+ goto out;
-+
-+ r->enabled = false;
-+
-+out:
-+ mutex_unlock(&rpm_smd_clk_lock);
-+}
-+
-+static int clk_smd_rpm_set_rate(struct clk_hw *hw, unsigned long rate,
-+ unsigned long parent_rate)
-+{
-+ struct clk_smd_rpm *r = to_clk_smd_rpm(hw);
-+ struct clk_smd_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_smd_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_smd_rpm_set_rate_active(r, active_rate);
-+ if (ret)
-+ goto out;
-+
-+ sleep_rate = max(this_sleep_rate, peer_sleep_rate);
-+ ret = clk_smd_rpm_set_rate_sleep(r, sleep_rate);
-+ if (ret)
-+ goto out;
-+
-+ r->rate = rate;
-+
-+out:
-+ mutex_unlock(&rpm_smd_clk_lock);
-+
-+ return ret;
-+}
-+
-+static long clk_smd_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_smd_rpm_recalc_rate(struct clk_hw *hw,
-+ unsigned long parent_rate)
-+{
-+ struct clk_smd_rpm *r = to_clk_smd_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 int clk_smd_rpm_enable_scaling(struct qcom_smd_rpm *rpm)
-+{
-+ int ret;
-+ struct clk_smd_rpm_req req = {
-+ .key = cpu_to_le32(QCOM_RPM_SMD_KEY_ENABLE),
-+ .nbytes = cpu_to_le32(sizeof(u32)),
-+ .value = cpu_to_le32(1),
-+ };
-+
-+ ret = qcom_rpm_smd_write(rpm, QCOM_SMD_RPM_SLEEP_STATE,
-+ QCOM_SMD_RPM_MISC_CLK,
-+ QCOM_RPM_SCALING_ENABLE_ID, &req, sizeof(req));
-+ if (ret) {
-+ pr_err("RPM clock scaling (sleep set) not enabled!\n");
-+ return ret;
-+ }
-+
-+ ret = qcom_rpm_smd_write(rpm, QCOM_SMD_RPM_ACTIVE_STATE,
-+ QCOM_SMD_RPM_MISC_CLK,
-+ QCOM_RPM_SCALING_ENABLE_ID, &req, sizeof(req));
-+ if (ret) {
-+ pr_err("RPM clock scaling (active set) not enabled!\n");
-+ return ret;
-+ }
-+
-+ pr_debug("%s: RPM clock scaling is enabled\n", __func__);
-+ return 0;
-+}
-+
-+static const struct clk_ops clk_smd_rpm_ops = {
-+ .prepare = clk_smd_rpm_prepare,
-+ .unprepare = clk_smd_rpm_unprepare,
-+ .set_rate = clk_smd_rpm_set_rate,
-+ .round_rate = clk_smd_rpm_round_rate,
-+ .recalc_rate = clk_smd_rpm_recalc_rate,
-+};
-+
-+static const struct clk_ops clk_smd_rpm_branch_ops = {
-+ .prepare = clk_smd_rpm_prepare,
-+ .unprepare = clk_smd_rpm_unprepare,
-+ .round_rate = clk_smd_rpm_round_rate,
-+ .recalc_rate = clk_smd_rpm_recalc_rate,
-+};
-+
-+/* msm8916 */
-+DEFINE_CLK_SMD_RPM(msm8916, pcnoc_clk, pcnoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 0);
-+DEFINE_CLK_SMD_RPM(msm8916, snoc_clk, snoc_a_clk, QCOM_SMD_RPM_BUS_CLK, 1);
-+DEFINE_CLK_SMD_RPM(msm8916, bimc_clk, bimc_a_clk, QCOM_SMD_RPM_MEM_CLK, 0);
-+DEFINE_CLK_SMD_RPM_QDSS(msm8916, qdss_clk, qdss_a_clk, QCOM_SMD_RPM_MISC_CLK, 1);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, bb_clk1, bb_clk1_a, 1);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, bb_clk2, bb_clk2_a, 2);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, rf_clk1, rf_clk1_a, 4);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER(msm8916, rf_clk2, rf_clk2_a, 5);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, bb_clk1_pin, bb_clk1_a_pin, 1);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, bb_clk2_pin, bb_clk2_a_pin, 2);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, rf_clk1_pin, rf_clk1_a_pin, 4);
-+DEFINE_CLK_SMD_RPM_XO_BUFFER_PINCTRL(msm8916, rf_clk2_pin, rf_clk2_a_pin, 5);
-+
-+static struct clk_smd_rpm *msm8916_clks[] = {
-+ [RPM_SMD_PCNOC_CLK] = &msm8916_pcnoc_clk,
-+ [RPM_SMD_PCNOC_A_CLK] = &msm8916_pcnoc_a_clk,
-+ [RPM_SMD_SNOC_CLK] = &msm8916_snoc_clk,
-+ [RPM_SMD_SNOC_A_CLK] = &msm8916_snoc_a_clk,
-+ [RPM_SMD_BIMC_CLK] = &msm8916_bimc_clk,
-+ [RPM_SMD_BIMC_A_CLK] = &msm8916_bimc_a_clk,
-+ [RPM_SMD_QDSS_CLK] = &msm8916_qdss_clk,
-+ [RPM_SMD_QDSS_A_CLK] = &msm8916_qdss_a_clk,
-+ [RPM_SMD_BB_CLK1] = &msm8916_bb_clk1,
-+ [RPM_SMD_BB_CLK1_A] = &msm8916_bb_clk1_a,
-+ [RPM_SMD_BB_CLK2] = &msm8916_bb_clk2,
-+ [RPM_SMD_BB_CLK2_A] = &msm8916_bb_clk2_a,
-+ [RPM_SMD_RF_CLK1] = &msm8916_rf_clk1,
-+ [RPM_SMD_RF_CLK1_A] = &msm8916_rf_clk1_a,
-+ [RPM_SMD_RF_CLK2] = &msm8916_rf_clk2,
-+ [RPM_SMD_RF_CLK2_A] = &msm8916_rf_clk2_a,
-+ [RPM_SMD_BB_CLK1_PIN] = &msm8916_bb_clk1_pin,
-+ [RPM_SMD_BB_CLK1_A_PIN] = &msm8916_bb_clk1_a_pin,
-+ [RPM_SMD_BB_CLK2_PIN] = &msm8916_bb_clk2_pin,
-+ [RPM_SMD_BB_CLK2_A_PIN] = &msm8916_bb_clk2_a_pin,
-+ [RPM_SMD_RF_CLK1_PIN] = &msm8916_rf_clk1_pin,
-+ [RPM_SMD_RF_CLK1_A_PIN] = &msm8916_rf_clk1_a_pin,
-+ [RPM_SMD_RF_CLK2_PIN] = &msm8916_rf_clk2_pin,
-+ [RPM_SMD_RF_CLK2_A_PIN] = &msm8916_rf_clk2_a_pin,
-+};
-+
-+static const struct rpm_smd_clk_desc rpm_clk_msm8916 = {
-+ .clks = msm8916_clks,
-+ .num_clks = ARRAY_SIZE(msm8916_clks),
-+};
-+
-+static const struct of_device_id rpm_smd_clk_match_table[] = {
-+ { .compatible = "qcom,rpmcc-msm8916", .data = &rpm_clk_msm8916 },
-+ { }
-+};
-+MODULE_DEVICE_TABLE(of, rpm_smd_clk_match_table);
-+
-+static int rpm_smd_clk_probe(struct platform_device *pdev)
-+{
-+ struct clk_hw **hws;
-+ struct rpm_cc *rcc;
-+ struct clk_hw_onecell_data *data;
-+ int ret;
-+ size_t num_clks, i;
-+ struct qcom_smd_rpm *rpm;
-+ struct clk_smd_rpm **rpm_smd_clks;
-+ const struct rpm_smd_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_smd_clks = desc->clks;
-+ num_clks = desc->num_clks;
-+
-+ rcc = devm_kzalloc(&pdev->dev, sizeof(*rcc) + sizeof(*hws) * num_clks,
-+ GFP_KERNEL);
-+ if (!rcc)
-+ return -ENOMEM;
-+
-+ hws = rcc->hws;
-+ data = &rcc->data;
-+ data->num = num_clks;
-+
-+ for (i = 0; i < num_clks; i++) {
-+ if (!rpm_smd_clks[i]) {
-+ continue;
-+ }
-+
-+ rpm_smd_clks[i]->rpm = rpm;
-+
-+ ret = clk_smd_rpm_handoff(rpm_smd_clks[i]);
-+ if (ret)
-+ goto err;
-+ }
-+
-+ ret = clk_smd_rpm_enable_scaling(rpm);
-+ if (ret)
-+ goto err;
-+
-+ for (i = 0; i < num_clks; i++) {
-+ if (!rpm_smd_clks[i]) {
-+ data->hws[i] = ERR_PTR(-ENOENT);
-+ continue;
-+ }
-+
-+ ret = devm_clk_hw_register(&pdev->dev, &rpm_smd_clks[i]->hw);
-+ if (ret)
-+ goto err;
-+ }
-+
-+ ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
-+ data);
-+ if (ret)
-+ goto err;
-+
-+ return 0;
-+err:
-+ dev_err(&pdev->dev, "Error registering SMD clock driver (%d)\n", ret);
-+ return ret;
-+}
-+
-+static int rpm_smd_clk_remove(struct platform_device *pdev)
-+{
-+ of_clk_del_provider(pdev->dev.of_node);
-+ return 0;
-+}
-+
-+static struct platform_driver rpm_smd_clk_driver = {
-+ .driver = {
-+ .name = "qcom-clk-smd-rpm",
-+ .of_match_table = rpm_smd_clk_match_table,
-+ },
-+ .probe = rpm_smd_clk_probe,
-+ .remove = rpm_smd_clk_remove,
-+};
-+
-+static int __init rpm_smd_clk_init(void)
-+{
-+ return platform_driver_register(&rpm_smd_clk_driver);
-+}
-+core_initcall(rpm_smd_clk_init);
-+
-+static void __exit rpm_smd_clk_exit(void)
-+{
-+ platform_driver_unregister(&rpm_smd_clk_driver);
-+}
-+module_exit(rpm_smd_clk_exit);
-+
-+MODULE_DESCRIPTION("Qualcomm RPM over SMD Clock Controller Driver");
-+MODULE_LICENSE("GPL v2");
-+MODULE_ALIAS("platform:qcom-clk-smd-rpm");
---- /dev/null
-+++ b/include/dt-bindings/clock/qcom,rpmcc.h
-@@ -0,0 +1,45 @@
-+/*
-+ * Copyright 2015 Linaro Limited
-+ *
-+ * This software is licensed under the terms of the GNU General Public
-+ * License version 2, as published by the Free Software Foundation, and
-+ * may be copied, distributed, and modified under those terms.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#ifndef _DT_BINDINGS_CLK_MSM_RPMCC_H
-+#define _DT_BINDINGS_CLK_MSM_RPMCC_H
-+
-+/* msm8916 */
-+#define RPM_SMD_XO_CLK_SRC 0
-+#define RPM_SMD_XO_A_CLK_SRC 1
-+#define RPM_SMD_PCNOC_CLK 2
-+#define RPM_SMD_PCNOC_A_CLK 3
-+#define RPM_SMD_SNOC_CLK 4
-+#define RPM_SMD_SNOC_A_CLK 5
-+#define RPM_SMD_BIMC_CLK 6
-+#define RPM_SMD_BIMC_A_CLK 7
-+#define RPM_SMD_QDSS_CLK 8
-+#define RPM_SMD_QDSS_A_CLK 9
-+#define RPM_SMD_BB_CLK1 10
-+#define RPM_SMD_BB_CLK1_A 11
-+#define RPM_SMD_BB_CLK2 12
-+#define RPM_SMD_BB_CLK2_A 13
-+#define RPM_SMD_RF_CLK1 14
-+#define RPM_SMD_RF_CLK1_A 15
-+#define RPM_SMD_RF_CLK2 16
-+#define RPM_SMD_RF_CLK2_A 17
-+#define RPM_SMD_BB_CLK1_PIN 18
-+#define RPM_SMD_BB_CLK1_A_PIN 19
-+#define RPM_SMD_BB_CLK2_PIN 20
-+#define RPM_SMD_BB_CLK2_A_PIN 21
-+#define RPM_SMD_RF_CLK1_PIN 22
-+#define RPM_SMD_RF_CLK1_A_PIN 23
-+#define RPM_SMD_RF_CLK2_PIN 24
-+#define RPM_SMD_RF_CLK2_A_PIN 25
-+
-+#endif
projects / openwrt / staging / blogic.git / blobdiff