diff options
Diffstat (limited to 'drivers/clk/meson/gxbb-aoclk.c')
| -rw-r--r-- | drivers/clk/meson/gxbb-aoclk.c | 339 |
1 files changed, 243 insertions, 96 deletions
diff --git a/drivers/clk/meson/gxbb-aoclk.c b/drivers/clk/meson/gxbb-aoclk.c index 42ed61d3c3fb..c7dfb3a06cb5 100644 --- a/drivers/clk/meson/gxbb-aoclk.c +++ b/drivers/clk/meson/gxbb-aoclk.c @@ -5,43 +5,219 @@ */ #include <linux/platform_device.h> #include <linux/mfd/syscon.h> -#include "clk-regmap.h" +#include <linux/module.h> #include "meson-aoclk.h" -#include "gxbb-aoclk.h" - -#define GXBB_AO_GATE(_name, _bit) \ -static struct clk_regmap _name##_ao = { \ - .data = &(struct clk_regmap_gate_data) { \ - .offset = AO_RTI_GEN_CNTL_REG0, \ - .bit_idx = (_bit), \ - }, \ - .hw.init = &(struct clk_init_data) { \ - .name = #_name "_ao", \ - .ops = &clk_regmap_gate_ops, \ - .parent_names = (const char *[]){ "clk81" }, \ - .num_parents = 1, \ - .flags = CLK_IGNORE_UNUSED, \ - }, \ -} - -GXBB_AO_GATE(remote, 0); -GXBB_AO_GATE(i2c_master, 1); -GXBB_AO_GATE(i2c_slave, 2); -GXBB_AO_GATE(uart1, 3); -GXBB_AO_GATE(uart2, 5); -GXBB_AO_GATE(ir_blaster, 6); - -static struct aoclk_cec_32k cec_32k_ao = { - .hw.init = &(struct clk_init_data) { - .name = "cec_32k_ao", - .ops = &meson_aoclk_cec_32k_ops, - .parent_names = (const char *[]){ "xtal" }, + +#include "clk-regmap.h" +#include "clk-dualdiv.h" + +#include <dt-bindings/clock/gxbb-aoclkc.h> +#include <dt-bindings/reset/gxbb-aoclkc.h> + +/* AO Configuration Clock registers offsets */ +#define AO_RTI_PWR_CNTL_REG1 0x0c +#define AO_RTI_PWR_CNTL_REG0 0x10 +#define AO_RTI_GEN_CNTL_REG0 0x40 +#define AO_OSCIN_CNTL 0x58 +#define AO_CRT_CLK_CNTL1 0x68 +#define AO_RTC_ALT_CLK_CNTL0 0x94 +#define AO_RTC_ALT_CLK_CNTL1 0x98 + +static const struct clk_parent_data gxbb_ao_pclk_parents = { .fw_name = "mpeg-clk" }; + +#define GXBB_AO_PCLK(_name, _bit, _flags) \ + MESON_PCLK(gxbb_ao_##_name, AO_RTI_GEN_CNTL_REG0, _bit, \ + &gxbb_ao_pclk_parents, _flags) + +static GXBB_AO_PCLK(remote, 0, CLK_IGNORE_UNUSED); +static GXBB_AO_PCLK(i2c_master, 1, CLK_IGNORE_UNUSED); +static GXBB_AO_PCLK(i2c_slave, 2, CLK_IGNORE_UNUSED); +static GXBB_AO_PCLK(uart1, 3, CLK_IGNORE_UNUSED); +static GXBB_AO_PCLK(uart2, 5, CLK_IGNORE_UNUSED); +static GXBB_AO_PCLK(ir_blaster, 6, CLK_IGNORE_UNUSED); + +static struct clk_regmap gxbb_ao_cts_oscin = { + .data = &(struct clk_regmap_gate_data){ + .offset = AO_RTI_PWR_CNTL_REG0, + .bit_idx = 6, + }, + .hw.init = &(struct clk_init_data){ + .name = "ao_cts_oscin", + .ops = &clk_regmap_gate_ro_ops, + .parent_data = &(const struct clk_parent_data) { + .fw_name = "xtal", + }, + .num_parents = 1, + }, +}; + +static struct clk_regmap gxbb_ao_32k_pre = { + .data = &(struct clk_regmap_gate_data){ + .offset = AO_RTC_ALT_CLK_CNTL0, + .bit_idx = 31, + }, + .hw.init = &(struct clk_init_data){ + .name = "ao_32k_pre", + .ops = &clk_regmap_gate_ops, + .parent_hws = (const struct clk_hw *[]) { &gxbb_ao_cts_oscin.hw }, + .num_parents = 1, + }, +}; + +static const struct meson_clk_dualdiv_param gxbb_32k_div_table[] = { + { + .dual = 1, + .n1 = 733, + .m1 = 8, + .n2 = 732, + .m2 = 11, + }, {} +}; + +static struct clk_regmap gxbb_ao_32k_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 = gxbb_32k_div_table, + }, + .hw.init = &(struct clk_init_data){ + .name = "ao_32k_div", + .ops = &meson_clk_dualdiv_ops, + .parent_hws = (const struct clk_hw *[]) { &gxbb_ao_32k_pre.hw }, + .num_parents = 1, + }, +}; + +static struct clk_regmap gxbb_ao_32k_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 = "ao_32k_sel", + .ops = &clk_regmap_mux_ops, + .parent_hws = (const struct clk_hw *[]) { + &gxbb_ao_32k_div.hw, + &gxbb_ao_32k_pre.hw + }, + .num_parents = 2, + .flags = CLK_SET_RATE_PARENT, + }, +}; + +static struct clk_regmap gxbb_ao_32k = { + .data = &(struct clk_regmap_gate_data){ + .offset = AO_RTC_ALT_CLK_CNTL0, + .bit_idx = 30, + }, + .hw.init = &(struct clk_init_data){ + .name = "ao_32k", + .ops = &clk_regmap_gate_ops, + .parent_hws = (const struct clk_hw *[]) { &gxbb_ao_32k_sel.hw }, .num_parents = 1, - .flags = CLK_IGNORE_UNUSED, + .flags = CLK_SET_RATE_PARENT, }, }; -static const unsigned int gxbb_aoclk_reset[] = { +static struct clk_regmap gxbb_ao_cts_rtc_oscin = { + .data = &(struct clk_regmap_mux_data) { + .offset = AO_RTI_PWR_CNTL_REG0, + .mask = 0x7, + .shift = 10, + .table = (u32[]){ 1, 2, 3, 4 }, + .flags = CLK_MUX_ROUND_CLOSEST, + }, + .hw.init = &(struct clk_init_data){ + .name = "ao_cts_rtc_oscin", + .ops = &clk_regmap_mux_ops, + .parent_data = (const struct clk_parent_data []) { + { .fw_name = "ext-32k-0", }, + { .fw_name = "ext-32k-1", }, + { .fw_name = "ext-32k-2", }, + { .hw = &gxbb_ao_32k.hw }, + }, + .num_parents = 4, + .flags = CLK_SET_RATE_PARENT, + }, +}; + +static struct clk_regmap gxbb_ao_clk81 = { + .data = &(struct clk_regmap_mux_data) { + .offset = AO_RTI_PWR_CNTL_REG0, + .mask = 0x1, + .shift = 0, + .flags = CLK_MUX_ROUND_CLOSEST, + }, + .hw.init = &(struct clk_init_data){ + .name = "ao_clk81", + .ops = &clk_regmap_mux_ro_ops, + .parent_data = (const struct clk_parent_data []) { + { .fw_name = "mpeg-clk", }, + { .hw = &gxbb_ao_cts_rtc_oscin.hw }, + }, + .num_parents = 2, + .flags = CLK_SET_RATE_PARENT, + }, +}; + +static struct clk_regmap gxbb_ao_cts_cec = { + .data = &(struct clk_regmap_mux_data) { + .offset = AO_CRT_CLK_CNTL1, + .mask = 0x1, + .shift = 27, + .flags = CLK_MUX_ROUND_CLOSEST, + }, + .hw.init = &(struct clk_init_data){ + .name = "ao_cts_cec", + .ops = &clk_regmap_mux_ops, + /* + * FIXME: The 'fixme' parent obviously does not exist. + * + * ATM, CCF won't call get_parent() if num_parents is 1. It + * does not allow NULL as a parent name either. + * + * On this particular mux, we only know the input #1 parent + * but, on boot, unknown input #0 is set, so it is critical + * to call .get_parent() on it + * + * Until CCF gets fixed, adding this fake parent that won't + * ever be registered should work around the problem + */ + .parent_data = (const struct clk_parent_data []) { + { .name = "fixme", .index = -1, }, + { .hw = &gxbb_ao_cts_rtc_oscin.hw }, + }, + .num_parents = 2, + .flags = CLK_SET_RATE_PARENT, + }, +}; + +static const unsigned int gxbb_ao_reset[] = { [RESET_AO_REMOTE] = 16, [RESET_AO_I2C_MASTER] = 18, [RESET_AO_I2C_SLAVE] = 19, @@ -50,82 +226,53 @@ static const unsigned int gxbb_aoclk_reset[] = { [RESET_AO_IR_BLASTER] = 23, }; -static struct clk_regmap *gxbb_aoclk_gate[] = { - [CLKID_AO_REMOTE] = &remote_ao, - [CLKID_AO_I2C_MASTER] = &i2c_master_ao, - [CLKID_AO_I2C_SLAVE] = &i2c_slave_ao, - [CLKID_AO_UART1] = &uart1_ao, - [CLKID_AO_UART2] = &uart2_ao, - [CLKID_AO_IR_BLASTER] = &ir_blaster_ao, +static struct clk_hw *gxbb_ao_hw_clks[] = { + [CLKID_AO_REMOTE] = &gxbb_ao_remote.hw, + [CLKID_AO_I2C_MASTER] = &gxbb_ao_i2c_master.hw, + [CLKID_AO_I2C_SLAVE] = &gxbb_ao_i2c_slave.hw, + [CLKID_AO_UART1] = &gxbb_ao_uart1.hw, + [CLKID_AO_UART2] = &gxbb_ao_uart2.hw, + [CLKID_AO_IR_BLASTER] = &gxbb_ao_ir_blaster.hw, + [CLKID_AO_CEC_32K] = &gxbb_ao_cts_cec.hw, + [CLKID_AO_CTS_OSCIN] = &gxbb_ao_cts_oscin.hw, + [CLKID_AO_32K_PRE] = &gxbb_ao_32k_pre.hw, + [CLKID_AO_32K_DIV] = &gxbb_ao_32k_div.hw, + [CLKID_AO_32K_SEL] = &gxbb_ao_32k_sel.hw, + [CLKID_AO_32K] = &gxbb_ao_32k.hw, + [CLKID_AO_CTS_RTC_OSCIN] = &gxbb_ao_cts_rtc_oscin.hw, + [CLKID_AO_CLK81] = &gxbb_ao_clk81.hw, }; -static const struct clk_hw_onecell_data gxbb_aoclk_onecell_data = { - .hws = { - [CLKID_AO_REMOTE] = &remote_ao.hw, - [CLKID_AO_I2C_MASTER] = &i2c_master_ao.hw, - [CLKID_AO_I2C_SLAVE] = &i2c_slave_ao.hw, - [CLKID_AO_UART1] = &uart1_ao.hw, - [CLKID_AO_UART2] = &uart2_ao.hw, - [CLKID_AO_IR_BLASTER] = &ir_blaster_ao.hw, - [CLKID_AO_CEC_32K] = &cec_32k_ao.hw, - }, - .num = NR_CLKS, -}; - -static int gxbb_register_cec_ao_32k(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct regmap *regmap; - int ret; - - regmap = syscon_node_to_regmap(of_get_parent(dev->of_node)); - if (IS_ERR(regmap)) { - dev_err(dev, "failed to get regmap\n"); - return PTR_ERR(regmap); - } - - /* Specific clocks */ - cec_32k_ao.regmap = regmap; - ret = devm_clk_hw_register(dev, &cec_32k_ao.hw); - if (ret) { - dev_err(&pdev->dev, "clk cec_32k_ao register failed.\n"); - return ret; - } - - return 0; -} - -static const struct meson_aoclk_data gxbb_aoclkc_data = { +static const struct meson_aoclk_data gxbb_ao_clkc_data = { .reset_reg = AO_RTI_GEN_CNTL_REG0, - .num_reset = ARRAY_SIZE(gxbb_aoclk_reset), - .reset = gxbb_aoclk_reset, - .num_clks = ARRAY_SIZE(gxbb_aoclk_gate), - .clks = gxbb_aoclk_gate, - .hw_data = &gxbb_aoclk_onecell_data, + .num_reset = ARRAY_SIZE(gxbb_ao_reset), + .reset = gxbb_ao_reset, + .clkc_data = { + .hw_clks = { + .hws = gxbb_ao_hw_clks, + .num = ARRAY_SIZE(gxbb_ao_hw_clks), + }, + }, }; -static int gxbb_aoclkc_probe(struct platform_device *pdev) -{ - int ret = gxbb_register_cec_ao_32k(pdev); - if (ret) - return ret; - - return meson_aoclkc_probe(pdev); -} - -static const struct of_device_id gxbb_aoclkc_match_table[] = { +static const struct of_device_id gxbb_ao_clkc_match_table[] = { { .compatible = "amlogic,meson-gx-aoclkc", - .data = &gxbb_aoclkc_data, + .data = &gxbb_ao_clkc_data.clkc_data, }, { } }; +MODULE_DEVICE_TABLE(of, gxbb_ao_clkc_match_table); -static struct platform_driver gxbb_aoclkc_driver = { - .probe = gxbb_aoclkc_probe, +static struct platform_driver gxbb_ao_clkc_driver = { + .probe = meson_aoclkc_probe, .driver = { .name = "gxbb-aoclkc", - .of_match_table = gxbb_aoclkc_match_table, + .of_match_table = gxbb_ao_clkc_match_table, }, }; -builtin_platform_driver(gxbb_aoclkc_driver); +module_platform_driver(gxbb_ao_clkc_driver); + +MODULE_DESCRIPTION("Amlogic GXBB Always-ON Clock Controller driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("CLK_MESON"); |