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Diffstat (limited to 'include/soc/qcom/clock-rpm.h')
| -rw-r--r-- | include/soc/qcom/clock-rpm.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/include/soc/qcom/clock-rpm.h b/include/soc/qcom/clock-rpm.h new file mode 100644 index 000000000000..18fedd4c97f7 --- /dev/null +++ b/include/soc/qcom/clock-rpm.h @@ -0,0 +1,180 @@ +/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * 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 __ARCH_ARM_MACH_MSM_CLOCK_RPM_H +#define __ARCH_ARM_MACH_MSM_CLOCK_RPM_H + +#include <linux/clk/msm-clk-provider.h> +#include <soc/qcom/rpm-smd.h> + +#define RPM_SMD_KEY_RATE 0x007A484B +#define RPM_SMD_KEY_ENABLE 0x62616E45 +#define RPM_SMD_KEY_STATE 0x54415453 + +#define RPM_CLK_BUFFER_A_REQ 0x616B6C63 +#define RPM_KEY_SOFTWARE_ENABLE 0x6E657773 +#define RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY 0x62636370 + +struct clk_ops; +struct clk_rpmrs_data; +extern struct clk_ops clk_ops_rpm; +extern struct clk_ops clk_ops_rpm_branch; + +struct rpm_clk { + int rpm_res_type; + int rpm_key; + int rpm_clk_id; + const int rpm_status_id; + bool active_only; + bool enabled; + bool branch; /* true: RPM only accepts 1 for ON and 0 for OFF */ + struct clk_rpmrs_data *rpmrs_data; + struct rpm_clk *peer; + struct clk c; + uint32_t *last_active_set_vote; + uint32_t *last_sleep_set_vote; +}; + +static inline struct rpm_clk *to_rpm_clk(struct clk *clk) +{ + return container_of(clk, struct rpm_clk, c); +} + +/* + * RPM scaling enable function used for target that has an RPM resource for + * rpm clock scaling enable. + */ +int enable_rpm_scaling(void); + +int vote_bimc(struct rpm_clk *r, uint32_t value); + +extern struct clk_rpmrs_data clk_rpmrs_data_smd; + +/* + * A note on name##last_{active,sleep}_set_vote below: + * We track the last active and sleep set votes across both + * active-only and active+sleep set clocks. We use the same + * tracking variables for both clocks in order to keep both + * updated about the last vote irrespective of which clock + * actually made the request. This is the only way to allow + * optimizations that prevent duplicate requests from being sent + * to the RPM. Separate tracking does not work since it is not + * possible to know if the peer's last request was actually sent + * to the RPM. + */ + +#define __DEFINE_CLK_RPM(name, active, type, r_id, stat_id, dep, key, \ + rpmrsdata) \ + static struct rpm_clk active; \ + static uint32_t name##last_active_set_vote; \ + static uint32_t name##last_sleep_set_vote; \ + static struct rpm_clk name = { \ + .rpm_res_type = (type), \ + .rpm_clk_id = (r_id), \ + .rpm_status_id = (stat_id), \ + .rpm_key = (key), \ + .peer = &active, \ + .rpmrs_data = (rpmrsdata),\ + .last_active_set_vote = &name##last_active_set_vote, \ + .last_sleep_set_vote = &name##last_sleep_set_vote, \ + .c = { \ + .ops = &clk_ops_rpm, \ + .dbg_name = #name, \ + CLK_INIT(name.c), \ + .depends = dep, \ + }, \ + }; \ + static struct rpm_clk active = { \ + .rpm_res_type = (type), \ + .rpm_clk_id = (r_id), \ + .rpm_status_id = (stat_id), \ + .rpm_key = (key), \ + .peer = &name, \ + .active_only = true, \ + .rpmrs_data = (rpmrsdata),\ + .last_active_set_vote = &name##last_active_set_vote, \ + .last_sleep_set_vote = &name##last_sleep_set_vote, \ + .c = { \ + .ops = &clk_ops_rpm, \ + .dbg_name = #active, \ + CLK_INIT(active.c), \ + .depends = dep, \ + }, \ + }; + +#define __DEFINE_CLK_RPM_BRANCH(name, active, type, r_id, stat_id, r, \ + key, rpmrsdata) \ + static struct rpm_clk active; \ + static uint32_t name##last_active_set_vote; \ + static uint32_t name##last_sleep_set_vote; \ + static struct rpm_clk name = { \ + .rpm_res_type = (type), \ + .rpm_clk_id = (r_id), \ + .rpm_status_id = (stat_id), \ + .rpm_key = (key), \ + .peer = &active, \ + .branch = true, \ + .rpmrs_data = (rpmrsdata),\ + .last_active_set_vote = &name##last_active_set_vote, \ + .last_sleep_set_vote = &name##last_sleep_set_vote, \ + .c = { \ + .ops = &clk_ops_rpm_branch, \ + .dbg_name = #name, \ + .rate = (r), \ + CLK_INIT(name.c), \ + }, \ + }; \ + static struct rpm_clk active = { \ + .rpm_res_type = (type), \ + .rpm_clk_id = (r_id), \ + .rpm_status_id = (stat_id), \ + .rpm_key = (key), \ + .peer = &name, \ + .active_only = true, \ + .branch = true, \ + .rpmrs_data = (rpmrsdata),\ + .last_active_set_vote = &name##last_active_set_vote, \ + .last_sleep_set_vote = &name##last_sleep_set_vote, \ + .c = { \ + .ops = &clk_ops_rpm_branch, \ + .dbg_name = #active, \ + .rate = (r), \ + CLK_INIT(active.c), \ + }, \ + }; + +#define DEFINE_CLK_RPM_SMD(name, active, type, r_id, dep) \ + __DEFINE_CLK_RPM(name, active, type, r_id, 0, dep, \ + RPM_SMD_KEY_RATE, &clk_rpmrs_data_smd) + +#define DEFINE_CLK_RPM_SMD_BRANCH(name, active, type, r_id, r) \ + __DEFINE_CLK_RPM_BRANCH(name, active, type, r_id, 0, r, \ + RPM_SMD_KEY_ENABLE, &clk_rpmrs_data_smd) + +#define DEFINE_CLK_RPM_SMD_QDSS(name, active, type, r_id) \ + __DEFINE_CLK_RPM(name, active, type, r_id, \ + 0, 0, RPM_SMD_KEY_STATE, &clk_rpmrs_data_smd) +/* + * The RPM XO buffer clock management code aggregates votes for pin-control mode + * and software mode separately. Software-enable has higher priority over pin- + * control, and if the software-mode aggregation results in a 'disable', the + * buffer will be left in pin-control mode if a pin-control vote is in place. + */ +#define DEFINE_CLK_RPM_SMD_XO_BUFFER(name, active, r_id) \ + __DEFINE_CLK_RPM_BRANCH(name, active, RPM_CLK_BUFFER_A_REQ, r_id, 0, \ + 1000, RPM_KEY_SOFTWARE_ENABLE, &clk_rpmrs_data_smd) + +#define DEFINE_CLK_RPM_SMD_XO_BUFFER_PINCTRL(name, active, r_id) \ + __DEFINE_CLK_RPM_BRANCH(name, active, RPM_CLK_BUFFER_A_REQ, r_id, 0, \ + 1000, RPM_KEY_PIN_CTRL_CLK_BUFFER_ENABLE_KEY, &clk_rpmrs_data_smd) +#endif |