diff options
Diffstat (limited to 'drivers/clk/imx/clk-imx8mp-audiomix.c')
| -rw-r--r-- | drivers/clk/imx/clk-imx8mp-audiomix.c | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/drivers/clk/imx/clk-imx8mp-audiomix.c b/drivers/clk/imx/clk-imx8mp-audiomix.c new file mode 100644 index 0000000000..e4300df88f --- /dev/null +++ b/drivers/clk/imx/clk-imx8mp-audiomix.c @@ -0,0 +1,277 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for i.MX8M Plus Audio BLK_CTRL + * + * Copyright (C) 2022 Marek Vasut <marex@denx.de> + */ + +#include <linux/clk-provider.h> +#include <linux/device.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> + +#include <dt-bindings/clock/imx8mp-clock.h> + +#include "clk.h" + +#define CLKEN0 0x000 +#define CLKEN1 0x004 +#define SAI_MCLK_SEL(n) (0x300 + 4 * (n)) /* n in 0..5 */ +#define PDM_SEL 0x318 +#define SAI_PLL_GNRL_CTL 0x400 + +#define SAIn_MCLK1_PARENT(n) \ +static const struct clk_parent_data \ +clk_imx8mp_audiomix_sai##n##_mclk1_parents[] = { \ + { \ + .fw_name = "sai"__stringify(n), \ + .name = "sai"__stringify(n) \ + }, { \ + .fw_name = "sai"__stringify(n)"_mclk", \ + .name = "sai"__stringify(n)"_mclk" \ + }, \ +} + +SAIn_MCLK1_PARENT(1); +SAIn_MCLK1_PARENT(2); +SAIn_MCLK1_PARENT(3); +SAIn_MCLK1_PARENT(5); +SAIn_MCLK1_PARENT(6); +SAIn_MCLK1_PARENT(7); + +static const struct clk_parent_data clk_imx8mp_audiomix_sai_mclk2_parents[] = { + { .fw_name = "sai1", .name = "sai1" }, + { .fw_name = "sai2", .name = "sai2" }, + { .fw_name = "sai3", .name = "sai3" }, + { .name = "dummy" }, + { .fw_name = "sai5", .name = "sai5" }, + { .fw_name = "sai6", .name = "sai6" }, + { .fw_name = "sai7", .name = "sai7" }, + { .fw_name = "sai1_mclk", .name = "sai1_mclk" }, + { .fw_name = "sai2_mclk", .name = "sai2_mclk" }, + { .fw_name = "sai3_mclk", .name = "sai3_mclk" }, + { .name = "dummy" }, + { .fw_name = "sai5_mclk", .name = "sai5_mclk" }, + { .fw_name = "sai6_mclk", .name = "sai6_mclk" }, + { .fw_name = "sai7_mclk", .name = "sai7_mclk" }, + { .fw_name = "spdif_extclk", .name = "spdif_extclk" }, + { .name = "dummy" }, +}; + +static const struct clk_parent_data clk_imx8mp_audiomix_pdm_parents[] = { + { .fw_name = "pdm", .name = "pdm" }, + { .name = "sai_pll_out_div2" }, + { .fw_name = "sai1_mclk", .name = "sai1_mclk" }, + { .name = "dummy" }, +}; + + +static const struct clk_parent_data clk_imx8mp_audiomix_pll_parents[] = { + { .fw_name = "osc_24m", .name = "osc_24m" }, + { .name = "dummy" }, + { .name = "dummy" }, + { .name = "dummy" }, +}; + +static const struct clk_parent_data clk_imx8mp_audiomix_pll_bypass_sels[] = { + { .fw_name = "sai_pll", .name = "sai_pll" }, + { .fw_name = "sai_pll_ref_sel", .name = "sai_pll_ref_sel" }, +}; + +#define CLK_GATE(gname, cname) \ + { \ + gname"_cg", \ + IMX8MP_CLK_AUDIOMIX_##cname, \ + { .fw_name = "ahb", .name = "ahb" }, NULL, 1, \ + CLKEN0 + 4 * !!(IMX8MP_CLK_AUDIOMIX_##cname / 32), \ + 1, IMX8MP_CLK_AUDIOMIX_##cname % 32 \ + } + +#define CLK_SAIn(n) \ + { \ + "sai"__stringify(n)"_mclk1_sel", \ + IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK1_SEL, {}, \ + clk_imx8mp_audiomix_sai##n##_mclk1_parents, \ + ARRAY_SIZE(clk_imx8mp_audiomix_sai##n##_mclk1_parents), \ + SAI_MCLK_SEL(n), 1, 0 \ + }, { \ + "sai"__stringify(n)"_mclk2_sel", \ + IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK2_SEL, {}, \ + clk_imx8mp_audiomix_sai_mclk2_parents, \ + ARRAY_SIZE(clk_imx8mp_audiomix_sai_mclk2_parents), \ + SAI_MCLK_SEL(n), 4, 1 \ + }, { \ + "sai"__stringify(n)"_ipg_cg", \ + IMX8MP_CLK_AUDIOMIX_SAI##n##_IPG, \ + { .fw_name = "ahb", .name = "ahb" }, NULL, 1, \ + CLKEN0, 1, IMX8MP_CLK_AUDIOMIX_SAI##n##_IPG \ + }, { \ + "sai"__stringify(n)"_mclk1_cg", \ + IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK1, \ + { \ + .fw_name = "sai"__stringify(n)"_mclk1_sel", \ + .name = "sai"__stringify(n)"_mclk1_sel" \ + }, NULL, 1, \ + CLKEN0, 1, IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK1 \ + }, { \ + "sai"__stringify(n)"_mclk2_cg", \ + IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK2, \ + { \ + .fw_name = "sai"__stringify(n)"_mclk2_sel", \ + .name = "sai"__stringify(n)"_mclk2_sel" \ + }, NULL, 1, \ + CLKEN0, 1, IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK2 \ + }, { \ + "sai"__stringify(n)"_mclk3_cg", \ + IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK3, \ + { \ + .fw_name = "sai_pll_out_div2", \ + .name = "sai_pll_out_div2" \ + }, NULL, 1, \ + CLKEN0, 1, IMX8MP_CLK_AUDIOMIX_SAI##n##_MCLK3 \ + } + +#define CLK_PDM \ + { \ + "pdm_sel", IMX8MP_CLK_AUDIOMIX_PDM_SEL, {}, \ + clk_imx8mp_audiomix_pdm_parents, \ + ARRAY_SIZE(clk_imx8mp_audiomix_pdm_parents), \ + PDM_SEL, 2, 0 \ + } + +struct clk_imx8mp_audiomix_sel { + const char *name; + int clkid; + const struct clk_parent_data parent; /* For gate */ + const struct clk_parent_data *parents; /* For mux */ + int num_parents; + u16 reg; + u8 width; + u8 shift; +}; + +static struct clk_imx8mp_audiomix_sel sels[] = { + CLK_GATE("asrc", ASRC_IPG), + CLK_GATE("pdm", PDM_IPG), + CLK_GATE("earc", EARC_IPG), + CLK_GATE("ocrama", OCRAMA_IPG), + CLK_GATE("aud2htx", AUD2HTX_IPG), + CLK_GATE("earc_phy", EARC_PHY), + CLK_GATE("sdma2", SDMA2_ROOT), + CLK_GATE("sdma3", SDMA3_ROOT), + CLK_GATE("spba2", SPBA2_ROOT), + CLK_GATE("dsp", DSP_ROOT), + CLK_GATE("dspdbg", DSPDBG_ROOT), + CLK_GATE("edma", EDMA_ROOT), + CLK_GATE("audpll", AUDPLL_ROOT), + CLK_GATE("mu2", MU2_ROOT), + CLK_GATE("mu3", MU3_ROOT), + CLK_PDM, + CLK_SAIn(1), + CLK_SAIn(2), + CLK_SAIn(3), + CLK_SAIn(5), + CLK_SAIn(6), + CLK_SAIn(7) +}; + +static int clk_imx8mp_audiomix_probe(struct platform_device *pdev) +{ + struct clk_hw_onecell_data *priv; + struct device *dev = &pdev->dev; + void __iomem *base; + struct clk_hw *hw; + int i; + + priv = devm_kzalloc(dev, + struct_size(priv, hws, IMX8MP_CLK_AUDIOMIX_END), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->num = IMX8MP_CLK_AUDIOMIX_END; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return PTR_ERR(base); + + for (i = 0; i < ARRAY_SIZE(sels); i++) { + if (sels[i].num_parents == 1) { + hw = devm_clk_hw_register_gate_parent_data(dev, + sels[i].name, &sels[i].parent, 0, + base + sels[i].reg, sels[i].shift, 0, NULL); + } else { + hw = devm_clk_hw_register_mux_parent_data_table(dev, + sels[i].name, sels[i].parents, + sels[i].num_parents, 0, + base + sels[i].reg, + sels[i].shift, sels[i].width, + 0, NULL, NULL); + } + + if (IS_ERR(hw)) + return PTR_ERR(hw); + + priv->hws[sels[i].clkid] = hw; + } + + /* SAI PLL */ + hw = devm_clk_hw_register_mux_parent_data_table(dev, + "sai_pll_ref_sel", clk_imx8mp_audiomix_pll_parents, + ARRAY_SIZE(clk_imx8mp_audiomix_pll_parents), + CLK_SET_RATE_NO_REPARENT, base + SAI_PLL_GNRL_CTL, + 0, 2, 0, NULL, NULL); + priv->hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_REF_SEL] = hw; + + hw = imx_dev_clk_hw_pll14xx(dev, "sai_pll", "sai_pll_ref_sel", + base + 0x400, &imx_1443x_pll); + if (IS_ERR(hw)) + return PTR_ERR(hw); + priv->hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL] = hw; + + hw = devm_clk_hw_register_mux_parent_data_table(dev, + "sai_pll_bypass", clk_imx8mp_audiomix_pll_bypass_sels, + ARRAY_SIZE(clk_imx8mp_audiomix_pll_bypass_sels), + CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT, + base + SAI_PLL_GNRL_CTL, 16, 1, 0, NULL, NULL); + if (IS_ERR(hw)) + return PTR_ERR(hw); + priv->hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_BYPASS] = hw; + + hw = devm_clk_hw_register_gate(dev, "sai_pll_out", "sai_pll_bypass", + 0, base + SAI_PLL_GNRL_CTL, 13, + 0, NULL); + if (IS_ERR(hw)) + return PTR_ERR(hw); + priv->hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_OUT] = hw; + + hw = devm_clk_hw_register_fixed_factor(dev, "sai_pll_out_div2", + "sai_pll_out", 0, 1, 2); + if (IS_ERR(hw)) + return PTR_ERR(hw); + + return devm_of_clk_add_hw_provider(&pdev->dev, of_clk_hw_onecell_get, + priv); +} + +static const struct of_device_id clk_imx8mp_audiomix_of_match[] = { + { .compatible = "fsl,imx8mp-audio-blk-ctrl" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, clk_imx8mp_audiomix_of_match); + +static struct platform_driver clk_imx8mp_audiomix_driver = { + .probe = clk_imx8mp_audiomix_probe, + .driver = { + .name = "imx8mp-audio-blk-ctrl", + .of_match_table = clk_imx8mp_audiomix_of_match, + }, +}; + +module_platform_driver(clk_imx8mp_audiomix_driver); + +MODULE_AUTHOR("Marek Vasut <marex@denx.de>"); +MODULE_DESCRIPTION("Freescale i.MX8MP Audio Block Controller driver"); +MODULE_LICENSE("GPL"); |