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alistair23-linux/drivers/clk/meson/g12a-aoclk.c
Alexandre Mergnat ba62608110 clk: meson: g12a-aoclk: migrate to the new parent description method 
This clock controller use the string comparison method to describe parent
relation between the clocks, which is not optimized.

Migrate to the new way by using .parent_hws where possible (when parent
clocks are localy declared in the controller) and use .parent_data
otherwise.

Remove clk input helper and all bypass clocks (declared in probe function)
which are no longer used since we are able to use device-tree clock name
directly.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
2019-07-29 12:42:48 +02:00

474 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* Amlogic Meson-AXG Clock Controller Driver
*
* Copyright (c) 2016 Baylibre SAS.
* Author: Michael Turquette <mturquette@baylibre.com>
*
* Copyright (c) 2019 Baylibre SAS.
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <linux/reset-controller.h>
#include <linux/mfd/syscon.h>
#include "meson-aoclk.h"
#include "g12a-aoclk.h"
#include "clk-regmap.h"
#include "clk-dualdiv.h"
/*
* AO Configuration Clock registers offsets
* Register offsets from the data sheet must be multiplied by 4.
*/
#define AO_RTI_STATUS_REG3 0x0C
#define AO_RTI_PWR_CNTL_REG0 0x10
#define AO_RTI_GEN_CNTL_REG0 0x40
#define AO_CLK_GATE0 0x4c
#define AO_CLK_GATE0_SP 0x50
#define AO_OSCIN_CNTL 0x58
#define AO_CEC_CLK_CNTL_REG0 0x74
#define AO_CEC_CLK_CNTL_REG1 0x78
#define AO_SAR_CLK 0x90
#define AO_RTC_ALT_CLK_CNTL0 0x94
#define AO_RTC_ALT_CLK_CNTL1 0x98
/*
* Like every other peripheral clock gate in Amlogic Clock drivers,
* we are using CLK_IGNORE_UNUSED here, so we keep the state of the
* bootloader. The goal is to remove this flag at some point.
* Actually removing it will require some extensive test to be done safely.
*/
#define AXG_AO_GATE(_name, _reg, _bit) \
static struct clk_regmap g12a_aoclk_##_name = { \
.data = &(struct clk_regmap_gate_data) { \
.offset = (_reg), \
.bit_idx = (_bit), \
}, \
.hw.init = &(struct clk_init_data) { \
.name = "g12a_ao_" #_name, \
.ops = &clk_regmap_gate_ops, \
.parent_data = &(const struct clk_parent_data) { \
.fw_name = "mpeg-clk", \
}, \
.num_parents = 1, \
.flags = CLK_IGNORE_UNUSED, \
}, \
}
AXG_AO_GATE(ahb, AO_CLK_GATE0, 0);
AXG_AO_GATE(ir_in, AO_CLK_GATE0, 1);
AXG_AO_GATE(i2c_m0, AO_CLK_GATE0, 2);
AXG_AO_GATE(i2c_s0, AO_CLK_GATE0, 3);
AXG_AO_GATE(uart, AO_CLK_GATE0, 4);
AXG_AO_GATE(prod_i2c, AO_CLK_GATE0, 5);
AXG_AO_GATE(uart2, AO_CLK_GATE0, 6);
AXG_AO_GATE(ir_out, AO_CLK_GATE0, 7);
AXG_AO_GATE(saradc, AO_CLK_GATE0, 8);
AXG_AO_GATE(mailbox, AO_CLK_GATE0_SP, 0);
AXG_AO_GATE(m3, AO_CLK_GATE0_SP, 1);
AXG_AO_GATE(ahb_sram, AO_CLK_GATE0_SP, 2);
AXG_AO_GATE(rti, AO_CLK_GATE0_SP, 3);
AXG_AO_GATE(m4_fclk, AO_CLK_GATE0_SP, 4);
AXG_AO_GATE(m4_hclk, AO_CLK_GATE0_SP, 5);
static struct clk_regmap g12a_aoclk_cts_oscin = {
.data = &(struct clk_regmap_gate_data){
.offset = AO_RTI_PWR_CNTL_REG0,
.bit_idx = 14,
},
.hw.init = &(struct clk_init_data){
.name = "cts_oscin",
.ops = &clk_regmap_gate_ro_ops,
.parent_data = &(const struct clk_parent_data) {
.fw_name = "xtal",
},
.num_parents = 1,
},
};
static const struct meson_clk_dualdiv_param g12a_32k_div_table[] = {
{
.dual = 1,
.n1 = 733,
.m1 = 8,
.n2 = 732,
.m2 = 11,
}, {}
};
/* 32k_by_oscin clock */
static struct clk_regmap g12a_aoclk_32k_by_oscin_pre = {
.data = &(struct clk_regmap_gate_data){
.offset = AO_RTC_ALT_CLK_CNTL0,
.bit_idx = 31,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_32k_by_oscin_pre",
.ops = &clk_regmap_gate_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_cts_oscin.hw
},
.num_parents = 1,
},
};
static struct clk_regmap g12a_aoclk_32k_by_oscin_div = {
.data = &(struct meson_clk_dualdiv_data){
.n1 = {
.reg_off = AO_RTC_ALT_CLK_CNTL0,
.shift = 0,
.width = 12,
},
.n2 = {
.reg_off = AO_RTC_ALT_CLK_CNTL0,
.shift = 12,
.width = 12,
},
.m1 = {
.reg_off = AO_RTC_ALT_CLK_CNTL1,
.shift = 0,
.width = 12,
},
.m2 = {
.reg_off = AO_RTC_ALT_CLK_CNTL1,
.shift = 12,
.width = 12,
},
.dual = {
.reg_off = AO_RTC_ALT_CLK_CNTL0,
.shift = 28,
.width = 1,
},
.table = g12a_32k_div_table,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_32k_by_oscin_div",
.ops = &meson_clk_dualdiv_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_32k_by_oscin_pre.hw
},
.num_parents = 1,
},
};
static struct clk_regmap g12a_aoclk_32k_by_oscin_sel = {
.data = &(struct clk_regmap_mux_data) {
.offset = AO_RTC_ALT_CLK_CNTL1,
.mask = 0x1,
.shift = 24,
.flags = CLK_MUX_ROUND_CLOSEST,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_32k_by_oscin_sel",
.ops = &clk_regmap_mux_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_32k_by_oscin_div.hw,
&g12a_aoclk_32k_by_oscin_pre.hw,
},
.num_parents = 2,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap g12a_aoclk_32k_by_oscin = {
.data = &(struct clk_regmap_gate_data){
.offset = AO_RTC_ALT_CLK_CNTL0,
.bit_idx = 30,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_32k_by_oscin",
.ops = &clk_regmap_gate_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_32k_by_oscin_sel.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
/* cec clock */
static struct clk_regmap g12a_aoclk_cec_pre = {
.data = &(struct clk_regmap_gate_data){
.offset = AO_CEC_CLK_CNTL_REG0,
.bit_idx = 31,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_cec_pre",
.ops = &clk_regmap_gate_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_cts_oscin.hw
},
.num_parents = 1,
},
};
static struct clk_regmap g12a_aoclk_cec_div = {
.data = &(struct meson_clk_dualdiv_data){
.n1 = {
.reg_off = AO_CEC_CLK_CNTL_REG0,
.shift = 0,
.width = 12,
},
.n2 = {
.reg_off = AO_CEC_CLK_CNTL_REG0,
.shift = 12,
.width = 12,
},
.m1 = {
.reg_off = AO_CEC_CLK_CNTL_REG1,
.shift = 0,
.width = 12,
},
.m2 = {
.reg_off = AO_CEC_CLK_CNTL_REG1,
.shift = 12,
.width = 12,
},
.dual = {
.reg_off = AO_CEC_CLK_CNTL_REG0,
.shift = 28,
.width = 1,
},
.table = g12a_32k_div_table,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_cec_div",
.ops = &meson_clk_dualdiv_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_cec_pre.hw
},
.num_parents = 1,
},
};
static struct clk_regmap g12a_aoclk_cec_sel = {
.data = &(struct clk_regmap_mux_data) {
.offset = AO_CEC_CLK_CNTL_REG1,
.mask = 0x1,
.shift = 24,
.flags = CLK_MUX_ROUND_CLOSEST,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_cec_sel",
.ops = &clk_regmap_mux_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_cec_div.hw,
&g12a_aoclk_cec_pre.hw,
},
.num_parents = 2,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap g12a_aoclk_cec = {
.data = &(struct clk_regmap_gate_data){
.offset = AO_CEC_CLK_CNTL_REG0,
.bit_idx = 30,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_cec",
.ops = &clk_regmap_gate_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_cec_sel.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap g12a_aoclk_cts_rtc_oscin = {
.data = &(struct clk_regmap_mux_data) {
.offset = AO_RTI_PWR_CNTL_REG0,
.mask = 0x1,
.shift = 10,
.flags = CLK_MUX_ROUND_CLOSEST,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_cts_rtc_oscin",
.ops = &clk_regmap_mux_ops,
.parent_data = (const struct clk_parent_data []) {
{ .hw = &g12a_aoclk_32k_by_oscin.hw },
{ .fw_name = "ext-32k-0", },
},
.num_parents = 2,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap g12a_aoclk_clk81 = {
.data = &(struct clk_regmap_mux_data) {
.offset = AO_RTI_PWR_CNTL_REG0,
.mask = 0x1,
.shift = 8,
.flags = CLK_MUX_ROUND_CLOSEST,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_clk81",
.ops = &clk_regmap_mux_ro_ops,
.parent_data = (const struct clk_parent_data []) {
{ .fw_name = "mpeg-clk", },
{ .hw = &g12a_aoclk_cts_rtc_oscin.hw },
},
.num_parents = 2,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap g12a_aoclk_saradc_mux = {
.data = &(struct clk_regmap_mux_data) {
.offset = AO_SAR_CLK,
.mask = 0x3,
.shift = 9,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_saradc_mux",
.ops = &clk_regmap_mux_ops,
.parent_data = (const struct clk_parent_data []) {
{ .fw_name = "xtal", },
{ .hw = &g12a_aoclk_clk81.hw },
},
.num_parents = 2,
},
};
static struct clk_regmap g12a_aoclk_saradc_div = {
.data = &(struct clk_regmap_div_data) {
.offset = AO_SAR_CLK,
.shift = 0,
.width = 8,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_saradc_div",
.ops = &clk_regmap_divider_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_saradc_mux.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap g12a_aoclk_saradc_gate = {
.data = &(struct clk_regmap_gate_data) {
.offset = AO_SAR_CLK,
.bit_idx = 8,
},
.hw.init = &(struct clk_init_data){
.name = "g12a_ao_saradc_gate",
.ops = &clk_regmap_gate_ops,
.parent_hws = (const struct clk_hw *[]) {
&g12a_aoclk_saradc_div.hw
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static const unsigned int g12a_aoclk_reset[] = {
[RESET_AO_IR_IN] = 16,
[RESET_AO_UART] = 17,
[RESET_AO_I2C_M] = 18,
[RESET_AO_I2C_S] = 19,
[RESET_AO_SAR_ADC] = 20,
[RESET_AO_UART2] = 22,
[RESET_AO_IR_OUT] = 23,
};
static struct clk_regmap *g12a_aoclk_regmap[] = {
&g12a_aoclk_ahb,
&g12a_aoclk_ir_in,
&g12a_aoclk_i2c_m0,
&g12a_aoclk_i2c_s0,
&g12a_aoclk_uart,
&g12a_aoclk_prod_i2c,
&g12a_aoclk_uart2,
&g12a_aoclk_ir_out,
&g12a_aoclk_saradc,
&g12a_aoclk_mailbox,
&g12a_aoclk_m3,
&g12a_aoclk_ahb_sram,
&g12a_aoclk_rti,
&g12a_aoclk_m4_fclk,
&g12a_aoclk_m4_hclk,
&g12a_aoclk_cts_oscin,
&g12a_aoclk_32k_by_oscin_pre,
&g12a_aoclk_32k_by_oscin_div,
&g12a_aoclk_32k_by_oscin_sel,
&g12a_aoclk_32k_by_oscin,
&g12a_aoclk_cec_pre,
&g12a_aoclk_cec_div,
&g12a_aoclk_cec_sel,
&g12a_aoclk_cec,
&g12a_aoclk_cts_rtc_oscin,
&g12a_aoclk_clk81,
&g12a_aoclk_saradc_mux,
&g12a_aoclk_saradc_div,
&g12a_aoclk_saradc_gate,
};
static const struct clk_hw_onecell_data g12a_aoclk_onecell_data = {
.hws = {
[CLKID_AO_AHB] = &g12a_aoclk_ahb.hw,
[CLKID_AO_IR_IN] = &g12a_aoclk_ir_in.hw,
[CLKID_AO_I2C_M0] = &g12a_aoclk_i2c_m0.hw,
[CLKID_AO_I2C_S0] = &g12a_aoclk_i2c_s0.hw,
[CLKID_AO_UART] = &g12a_aoclk_uart.hw,
[CLKID_AO_PROD_I2C] = &g12a_aoclk_prod_i2c.hw,
[CLKID_AO_UART2] = &g12a_aoclk_uart2.hw,
[CLKID_AO_IR_OUT] = &g12a_aoclk_ir_out.hw,
[CLKID_AO_SAR_ADC] = &g12a_aoclk_saradc.hw,
[CLKID_AO_MAILBOX] = &g12a_aoclk_mailbox.hw,
[CLKID_AO_M3] = &g12a_aoclk_m3.hw,
[CLKID_AO_AHB_SRAM] = &g12a_aoclk_ahb_sram.hw,
[CLKID_AO_RTI] = &g12a_aoclk_rti.hw,
[CLKID_AO_M4_FCLK] = &g12a_aoclk_m4_fclk.hw,
[CLKID_AO_M4_HCLK] = &g12a_aoclk_m4_hclk.hw,
[CLKID_AO_CLK81] = &g12a_aoclk_clk81.hw,
[CLKID_AO_SAR_ADC_SEL] = &g12a_aoclk_saradc_mux.hw,
[CLKID_AO_SAR_ADC_DIV] = &g12a_aoclk_saradc_div.hw,
[CLKID_AO_SAR_ADC_CLK] = &g12a_aoclk_saradc_gate.hw,
[CLKID_AO_CTS_OSCIN] = &g12a_aoclk_cts_oscin.hw,
[CLKID_AO_32K_PRE] = &g12a_aoclk_32k_by_oscin_pre.hw,
[CLKID_AO_32K_DIV] = &g12a_aoclk_32k_by_oscin_div.hw,
[CLKID_AO_32K_SEL] = &g12a_aoclk_32k_by_oscin_sel.hw,
[CLKID_AO_32K] = &g12a_aoclk_32k_by_oscin.hw,
[CLKID_AO_CEC_PRE] = &g12a_aoclk_cec_pre.hw,
[CLKID_AO_CEC_DIV] = &g12a_aoclk_cec_div.hw,
[CLKID_AO_CEC_SEL] = &g12a_aoclk_cec_sel.hw,
[CLKID_AO_CEC] = &g12a_aoclk_cec.hw,
[CLKID_AO_CTS_RTC_OSCIN] = &g12a_aoclk_cts_rtc_oscin.hw,
},
.num = NR_CLKS,
};
static const struct meson_aoclk_data g12a_aoclkc_data = {
.reset_reg = AO_RTI_GEN_CNTL_REG0,
.num_reset = ARRAY_SIZE(g12a_aoclk_reset),
.reset = g12a_aoclk_reset,
.num_clks = ARRAY_SIZE(g12a_aoclk_regmap),
.clks = g12a_aoclk_regmap,
.hw_data = &g12a_aoclk_onecell_data,
};
static const struct of_device_id g12a_aoclkc_match_table[] = {
{
.compatible = "amlogic,meson-g12a-aoclkc",
.data = &g12a_aoclkc_data,
},
{ }
};
static struct platform_driver g12a_aoclkc_driver = {
.probe = meson_aoclkc_probe,
.driver = {
.name = "g12a-aoclkc",
.of_match_table = g12a_aoclkc_match_table,
},
};
builtin_platform_driver(g12a_aoclkc_driver);
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