diff options
Diffstat (limited to 'drivers/clk/meson/axg-aoclk.c')
| -rw-r--r-- | drivers/clk/meson/axg-aoclk.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/drivers/clk/meson/axg-aoclk.c b/drivers/clk/meson/axg-aoclk.c new file mode 100644 index 0000000..29e0885 --- /dev/null +++ b/drivers/clk/meson/axg-aoclk.c @@ -0,0 +1,164 @@ +// 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) 2018 Amlogic, inc. + * Author: Qiufang Dai <qiufang.dai@amlogic.com> + */ +#include <linux/clk-provider.h> +#include <linux/platform_device.h> +#include <linux/reset-controller.h> +#include <linux/mfd/syscon.h> +#include "clk-regmap.h" +#include "meson-aoclk.h" +#include "axg-aoclk.h" + +#define AXG_AO_GATE(_name, _bit) \ +static struct clk_regmap axg_aoclk_##_name = { \ + .data = &(struct clk_regmap_gate_data) { \ + .offset = (AO_RTI_GEN_CNTL_REG0), \ + .bit_idx = (_bit), \ + }, \ + .hw.init = &(struct clk_init_data) { \ + .name = "axg_ao_" #_name, \ + .ops = &clk_regmap_gate_ops, \ + .parent_names = (const char *[]){ "clk81" }, \ + .num_parents = 1, \ + .flags = CLK_IGNORE_UNUSED, \ + }, \ +} + +AXG_AO_GATE(remote, 0); +AXG_AO_GATE(i2c_master, 1); +AXG_AO_GATE(i2c_slave, 2); +AXG_AO_GATE(uart1, 3); +AXG_AO_GATE(uart2, 5); +AXG_AO_GATE(ir_blaster, 6); +AXG_AO_GATE(saradc, 7); + +static struct clk_regmap axg_aoclk_clk81 = { + .data = &(struct clk_regmap_mux_data) { + .offset = AO_RTI_PWR_CNTL_REG0, + .mask = 0x1, + .shift = 8, + }, + .hw.init = &(struct clk_init_data){ + .name = "axg_ao_clk81", + .ops = &clk_regmap_mux_ro_ops, + .parent_names = (const char *[]){ "clk81", "ao_alt_xtal"}, + .num_parents = 2, + }, +}; + +static struct clk_regmap axg_aoclk_saradc_mux = { + .data = &(struct clk_regmap_mux_data) { + .offset = AO_SAR_CLK, + .mask = 0x3, + .shift = 9, + }, + .hw.init = &(struct clk_init_data){ + .name = "axg_ao_saradc_mux", + .ops = &clk_regmap_mux_ops, + .parent_names = (const char *[]){ "xtal", "axg_ao_clk81" }, + .num_parents = 2, + }, +}; + +static struct clk_regmap axg_aoclk_saradc_div = { + .data = &(struct clk_regmap_div_data) { + .offset = AO_SAR_CLK, + .shift = 0, + .width = 8, + }, + .hw.init = &(struct clk_init_data){ + .name = "axg_ao_saradc_div", + .ops = &clk_regmap_divider_ops, + .parent_names = (const char *[]){ "axg_ao_saradc_mux" }, + .num_parents = 1, + .flags = CLK_SET_RATE_PARENT, + }, +}; + +static struct clk_regmap axg_aoclk_saradc_gate = { + .data = &(struct clk_regmap_gate_data) { + .offset = AO_SAR_CLK, + .bit_idx = 8, + }, + .hw.init = &(struct clk_init_data){ + .name = "axg_ao_saradc_gate", + .ops = &clk_regmap_gate_ops, + .parent_names = (const char *[]){ "axg_ao_saradc_div" }, + .num_parents = 1, + .flags = CLK_SET_RATE_PARENT, + }, +}; + +static const unsigned int axg_aoclk_reset[] = { + [RESET_AO_REMOTE] = 16, + [RESET_AO_I2C_MASTER] = 18, + [RESET_AO_I2C_SLAVE] = 19, + [RESET_AO_UART1] = 17, + [RESET_AO_UART2] = 22, + [RESET_AO_IR_BLASTER] = 23, +}; + +static struct clk_regmap *axg_aoclk_regmap[] = { + [CLKID_AO_REMOTE] = &axg_aoclk_remote, + [CLKID_AO_I2C_MASTER] = &axg_aoclk_i2c_master, + [CLKID_AO_I2C_SLAVE] = &axg_aoclk_i2c_slave, + [CLKID_AO_UART1] = &axg_aoclk_uart1, + [CLKID_AO_UART2] = &axg_aoclk_uart2, + [CLKID_AO_IR_BLASTER] = &axg_aoclk_ir_blaster, + [CLKID_AO_SAR_ADC] = &axg_aoclk_saradc, + [CLKID_AO_CLK81] = &axg_aoclk_clk81, + [CLKID_AO_SAR_ADC_SEL] = &axg_aoclk_saradc_mux, + [CLKID_AO_SAR_ADC_DIV] = &axg_aoclk_saradc_div, + [CLKID_AO_SAR_ADC_CLK] = &axg_aoclk_saradc_gate, +}; + +static const struct clk_hw_onecell_data axg_aoclk_onecell_data = { + .hws = { + [CLKID_AO_REMOTE] = &axg_aoclk_remote.hw, + [CLKID_AO_I2C_MASTER] = &axg_aoclk_i2c_master.hw, + [CLKID_AO_I2C_SLAVE] = &axg_aoclk_i2c_slave.hw, + [CLKID_AO_UART1] = &axg_aoclk_uart1.hw, + [CLKID_AO_UART2] = &axg_aoclk_uart2.hw, + [CLKID_AO_IR_BLASTER] = &axg_aoclk_ir_blaster.hw, + [CLKID_AO_SAR_ADC] = &axg_aoclk_saradc.hw, + [CLKID_AO_CLK81] = &axg_aoclk_clk81.hw, + [CLKID_AO_SAR_ADC_SEL] = &axg_aoclk_saradc_mux.hw, + [CLKID_AO_SAR_ADC_DIV] = &axg_aoclk_saradc_div.hw, + [CLKID_AO_SAR_ADC_CLK] = &axg_aoclk_saradc_gate.hw, + }, + .num = NR_CLKS, +}; + +static const struct meson_aoclk_data axg_aoclkc_data = { + .reset_reg = AO_RTI_GEN_CNTL_REG0, + .num_reset = ARRAY_SIZE(axg_aoclk_reset), + .reset = axg_aoclk_reset, + .num_clks = ARRAY_SIZE(axg_aoclk_regmap), + .clks = axg_aoclk_regmap, + .hw_data = &axg_aoclk_onecell_data, +}; + +static const struct of_device_id axg_aoclkc_match_table[] = { + { + .compatible = "amlogic,meson-axg-aoclkc", + .data = &axg_aoclkc_data, + }, + { } +}; + +static struct platform_driver axg_aoclkc_driver = { + .probe = meson_aoclkc_probe, + .driver = { + .name = "axg-aoclkc", + .of_match_table = axg_aoclkc_match_table, + }, +}; + +builtin_platform_driver(axg_aoclkc_driver); |
