| Message ID | 1583226206-19758-9-git-send-email-abel.vesa@nxp.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add generic MFD i.MX mix and audiomix support | expand |
Quoting Abel Vesa (2020-03-03 01:03:23) > diff --git a/drivers/clk/imx/clk-audiomix.c b/drivers/clk/imx/clk-audiomix.c > new file mode 100644 > index 00000000..8b84943 > --- /dev/null > +++ b/drivers/clk/imx/clk-audiomix.c > @@ -0,0 +1,237 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright 2019 NXP. > + */ > + > +#include <dt-bindings/clock/imx8mp-clock.h> > +#include <linux/clk.h> > +#include <linux/err.h> > +#include <linux/io.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/of_address.h> > +#include <linux/platform_device.h> > +#include <linux/pm_runtime.h> > +#include <linux/slab.h> > +#include <linux/types.h> > + > +#include "clk.h" > + > +static int shared_count_pdm; > +static struct clk_hw **hws; > +static struct clk_hw_onecell_data *clk_hw_data; > +static uint32_t audiomix_clk_saved_regs[14]; > +static struct clk *clk_audio_root; > +static struct clk *clk_audio_ahb; > +static struct clk *clk_audio_axi_div; > + > +static const struct imx_pll14xx_rate_table imx_audiomix_sai_pll_tbl[] = { > + PLL_1443X_RATE(650000000U, 325, 3, 2, 0), > +}; > + > +static const struct imx_pll14xx_clk imx_audiomix_sai_pll = { > + .type = PLL_1443X, > + .rate_table = imx_audiomix_sai_pll_tbl, > +}; > + > +static const char *imx_sai_mclk2_sels[] = {"sai1", "sai2", "sai3", "dummy", > + "sai5", "sai6", "sai7", "dummy", > + "dummy", "dummy", "dummy", > + "dummy", "dummy", "dummy", "dummy"}; > +static const char *imx_sai1_mclk1_sels[] = {"sai1", "dummy", }; > +static const char *imx_sai2_mclk1_sels[] = {"sai2", "dummy", }; > +static const char *imx_sai3_mclk1_sels[] = {"sai3", "dummy", }; > +static const char *imx_sai5_mclk1_sels[] = {"sai5", "dummy", }; > +static const char *imx_sai6_mclk1_sels[] = {"sai6", "dummy", }; > +static const char *imx_sai7_mclk1_sels[] = {"sai7", "dummy", }; > +static const char *imx_pdm_sels[] = {"pdm", "sai_pll_div2", "dummy", "dummy" }; > +static const char *imx_sai_pll_ref_sels[] = {"osc_24m", "dummy", "dummy", "dummy", }; > +static const char *imx_sai_pll_bypass_sels[] = {"sai_pll", "sai_pll_ref_sel", }; > + > +static int imx_audiomix_clk_suspend(struct device *dev) > +{ > + void __iomem *base; > + > + base = dev_get_drvdata(dev->parent); > + > + audiomix_clk_saved_regs[0] = readl(base); > + audiomix_clk_saved_regs[1] = readl(base + 0x4); > + > + audiomix_clk_saved_regs[2] = readl(base + 0x300); > + audiomix_clk_saved_regs[3] = readl(base + 0x304); > + audiomix_clk_saved_regs[4] = readl(base + 0x308); > + audiomix_clk_saved_regs[5] = readl(base + 0x30C); > + audiomix_clk_saved_regs[6] = readl(base + 0x310); > + audiomix_clk_saved_regs[7] = readl(base + 0x314); > + audiomix_clk_saved_regs[8] = readl(base + 0x318); > + > + audiomix_clk_saved_regs[9] = readl(base + 0x400); > + audiomix_clk_saved_regs[10] = readl(base + 0x404); > + audiomix_clk_saved_regs[11] = readl(base + 0x408); > + audiomix_clk_saved_regs[12] = readl(base + 0x40C); > + audiomix_clk_saved_regs[13] = readl(base + 0x410); Maybe use three loops that have an 'i' and an offset and then += 4 all the time? Would be a little more compact. > + > + clk_disable_unprepare(clk_audio_ahb); > + clk_disable_unprepare(clk_audio_root); > + clk_disable_unprepare(clk_audio_axi_div); > + pm_runtime_put(dev); > + > + return 0; > +} > + > +static int imx_audiomix_clk_resume(struct device *dev) > +{ > + void __iomem *base; > + > + base = dev_get_drvdata(dev->parent); > + > + pm_runtime_get(dev); > + clk_prepare_enable(clk_audio_ahb); > + clk_prepare_enable(clk_audio_root); > + clk_prepare_enable(clk_audio_axi_div); > + > + writel(audiomix_clk_saved_regs[0], base); > + writel(audiomix_clk_saved_regs[1], base + 0x4); > + > + writel(audiomix_clk_saved_regs[2], base + 0x300); > + writel(audiomix_clk_saved_regs[3], base + 0x304); > + writel(audiomix_clk_saved_regs[4], base + 0x308); > + writel(audiomix_clk_saved_regs[5], base + 0x30C); > + writel(audiomix_clk_saved_regs[6], base + 0x310); > + writel(audiomix_clk_saved_regs[7], base + 0x314); > + writel(audiomix_clk_saved_regs[8], base + 0x318); > + > + writel(audiomix_clk_saved_regs[9], base + 0x400); > + writel(audiomix_clk_saved_regs[10], base + 0x404); > + writel(audiomix_clk_saved_regs[11], base + 0x408); > + writel(audiomix_clk_saved_regs[12], base + 0x40C); > + writel(audiomix_clk_saved_regs[13], base + 0x410); > + > + return 0; > +} > + > +static int imx_audiomix_clk_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct device_node *np = dev->of_node; > + void __iomem *base; > + > + clk_audio_root = of_clk_get_by_name(np, "audio_root"); Any reason devm_clk_get() can't be used? > + if (IS_ERR(clk_audio_root)) > + return PTR_ERR(clk_audio_root); > + > + clk_audio_ahb = of_clk_get_by_name(np, "audio_ahb"); > + if (IS_ERR(clk_audio_ahb)) > + return PTR_ERR(clk_audio_ahb); > + > + clk_audio_axi_div = of_clk_get_by_name(np, "audio_axi_div"); > + if (IS_ERR(clk_audio_axi_div)) > + return PTR_ERR(clk_audio_axi_div); > + > + base = dev_get_drvdata(dev->parent); > + if (IS_ERR(base)) > + return PTR_ERR(base); > + > + clk_hw_data = kzalloc(struct_size(clk_hw_data, hws, IMX8MP_CLK_AUDIOMIX_END), GFP_KERNEL); This line is long. Please limit length. > + if (WARN_ON(!clk_hw_data)) > + return -ENOMEM; > + > + clk_hw_data->num = IMX8MP_CLK_AUDIOMIX_END; > + hws = clk_hw_data->hws; > + > + pm_runtime_enable(dev); > + > + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_REF_SEL] = imx_dev_clk_hw_mux(dev, "sai_pll_ref_sel", base + 0x400, 0, 2, imx_sai_pll_ref_sels, ARRAY_SIZE(imx_sai_pll_ref_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL] = imx_dev_clk_hw_pll14xx(dev, "sai_pll", "sai_pll_ref_sel", base + 0x400, &imx_audiomix_sai_pll); > + > + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_BYPASS] = imx_dev_clk_hw_mux_flags(dev, "sai_pll_bypass", base + 0x400, 4, 1, imx_sai_pll_bypass_sels, ARRAY_SIZE(imx_sai_pll_bypass_sels), CLK_SET_RATE_PARENT); > + > + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_OUT] = imx_dev_clk_hw_gate(dev, "sai_pll_out", "sai_pll_bypass", base + 0x400, 13); > + > + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK1_SEL] = imx_dev_clk_hw_mux_flags(dev, "sai1_mclk1_sel", base + 0x300, 0, 1, imx_sai1_mclk1_sels, ARRAY_SIZE(imx_sai1_mclk1_sels), CLK_SET_RATE_PARENT); > + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai1_mclk2_sel", base + 0x300, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK1_SEL] = imx_dev_clk_hw_mux_flags(dev, "sai2_mclk1_sel", base + 0x304, 0, 1, imx_sai2_mclk1_sels, ARRAY_SIZE(imx_sai2_mclk1_sels), CLK_SET_RATE_PARENT); > + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai2_mclk2_sel", base + 0x304, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1_SEL] = imx_dev_clk_hw_mux_flags(dev, "sai3_mclk1_sel", base + 0x308, 0, 1, imx_sai3_mclk1_sels, ARRAY_SIZE(imx_sai3_mclk1_sels), CLK_SET_RATE_PARENT); > + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai3_mclk2_sel", base + 0x308, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK1_SEL] = imx_dev_clk_hw_mux(dev, "sai5_mclk1_sel", base + 0x30C, 0, 1, imx_sai5_mclk1_sels, ARRAY_SIZE(imx_sai5_mclk1_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai5_mclk2_sel", base + 0x30C, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK1_SEL] = imx_dev_clk_hw_mux(dev, "sai6_mclk1_sel", base + 0x310, 0, 1, imx_sai6_mclk1_sels, ARRAY_SIZE(imx_sai6_mclk1_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai6_mclk2_sel", base + 0x310, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK1_SEL] = imx_dev_clk_hw_mux(dev, "sai7_mclk1_sel", base + 0x314, 0, 1, imx_sai7_mclk1_sels, ARRAY_SIZE(imx_sai7_mclk1_sels)); > + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai7_mclk2_sel", base + 0x314, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); > + > + hws[IMX8MP_CLK_AUDIOMIX_SAI1_IPG] = imx_dev_clk_hw_gate(dev, "sai1_ipg_clk", "ipg_audio_root", base, 0); > + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK1] = imx_dev_clk_hw_gate(dev, "sai1_mclk1_clk", "sai1_mclk1_sel", base, 1); > + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK2] = imx_dev_clk_hw_gate(dev, "sai1_mclk2_clk", "sai1_mclk2_sel", base, 2); > + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK3] = imx_dev_clk_hw_gate(dev, "sai1_mclk3_clk", "sai_pll_out", base, 3); > + hws[IMX8MP_CLK_AUDIOMIX_SAI2_IPG] = imx_dev_clk_hw_gate(dev, "sai2_ipg_clk", "ipg_audio_root", base, 4); > + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK1] = imx_dev_clk_hw_gate(dev, "sai2_mclk1_clk", "sai2_mclk1_sel", base, 5); > + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK2] = imx_dev_clk_hw_gate(dev, "sai2_mclk2_clk", "sai2_mclk2_sel", base, 6); > + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK3] = imx_dev_clk_hw_gate(dev, "sai2_mclk3_clk", "sai_pll_out", base, 7); > + hws[IMX8MP_CLK_AUDIOMIX_SAI3_IPG] = imx_dev_clk_hw_gate(dev, "sai3_ipg_clk", "ipg_audio_root", base, 8); > + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1] = imx_dev_clk_hw_gate(dev, "sai3_mclk1_clk", "sai3_mclk1_sel", base, 9); > + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK2] = imx_dev_clk_hw_gate(dev, "sai3_mclk2_clk", "sai3_mclk2_sel", base, 10); > + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK3] = imx_dev_clk_hw_gate(dev, "sai3_mclk3_clk", "sai_pll_out", base, 11); > + hws[IMX8MP_CLK_AUDIOMIX_SAI5_IPG] = imx_dev_clk_hw_gate(dev, "sai5_ipg_clk", "ipg_audio_root", base, 12); > + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK1] = imx_dev_clk_hw_gate(dev, "sai5_mclk1_clk", "sai5_mclk1_sel", base, 13); > + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK2] = imx_dev_clk_hw_gate(dev, "sai5_mclk2_clk", "sai5_mclk2_sel", base, 14); > + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK3] = imx_dev_clk_hw_gate(dev, "sai5_mclk3_clk", "sai_pll_out", base, 15); > + hws[IMX8MP_CLK_AUDIOMIX_SAI6_IPG] = imx_dev_clk_hw_gate(dev, "sai6_ipg_clk", "ipg_audio_root", base, 16); > + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK1] = imx_dev_clk_hw_gate(dev, "sai6_mclk1_clk", "sai6_mclk1_sel", base, 17); > + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK2] = imx_dev_clk_hw_gate(dev, "sai6_mclk2_clk", "sai6_mclk2_sel", base, 18); > + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK3] = imx_dev_clk_hw_gate(dev, "sai6_mclk3_clk", "sai_pll_out", base, 19); > + hws[IMX8MP_CLK_AUDIOMIX_SAI7_IPG] = imx_dev_clk_hw_gate(dev, "sai7_ipg_clk", "ipg_audio_root", base, 20); > + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK1] = imx_dev_clk_hw_gate(dev, "sai7_mclk1_clk", "sai7_mclk1_sel", base, 21); > + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK2] = imx_dev_clk_hw_gate(dev, "sai7_mclk2_clk", "sai7_mclk2_sel", base, 22); > + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK3] = imx_dev_clk_hw_gate(dev, "sai7_mclk3_clk", "sai_pll_out", base, 23); > + hws[IMX8MP_CLK_AUDIOMIX_ASRC_IPG] = imx_dev_clk_hw_gate(dev, "asrc_ipg_clk", "ipg_audio_root", base, 24); > + hws[IMX8MP_CLK_AUDIOMIX_PDM_IPG] = imx_dev_clk_hw_gate_shared(dev, "pdm_ipg_clk", "ipg_audio_root", base, 25, &shared_count_pdm); > + hws[IMX8MP_CLK_AUDIOMIX_PDM_ROOT] = imx_dev_clk_hw_gate_shared(dev, "pdm_root_clk", "pdm", base, 25, &shared_count_pdm); > + > + hws[IMX8MP_CLK_AUDIOMIX_SDMA2_ROOT] = imx_dev_clk_hw_gate(dev, "sdma2_root_clk", "ipg_audio_root", base, 26); > + hws[IMX8MP_CLK_AUDIOMIX_SDMA3_ROOT] = imx_dev_clk_hw_gate(dev, "sdma3_root_clk", "ipg_audio_root", base, 27); > + hws[IMX8MP_CLK_AUDIOMIX_SPBA2_ROOT] = imx_dev_clk_hw_gate(dev, "spba2_root_clk", "ipg_audio_root", base, 28); > + hws[IMX8MP_CLK_AUDIOMIX_DSP_ROOT] = imx_dev_clk_hw_gate(dev, "dsp_root_clk", "ipg_audio_root", base, 29); > + hws[IMX8MP_CLK_AUDIOMIX_DSPDBG_ROOT] = imx_dev_clk_hw_gate(dev, "dsp_dbg_clk", "ipg_audio_root", base, 30); > + hws[IMX8MP_CLK_AUDIOMIX_EARC_IPG] = imx_dev_clk_hw_gate(dev, "earc_ipg_clk", "ipg_audio_root", base, 31); > + > + hws[IMX8MP_CLK_AUDIOMIX_OCRAMA_IPG] = imx_dev_clk_hw_gate(dev, "ocram_a_ipg_clk", "ipg_audio_root", base + 4, 0); > + hws[IMX8MP_CLK_AUDIOMIX_AUD2HTX_IPG] = imx_dev_clk_hw_gate(dev, "aud2htx_ipg_clk", "ipg_audio_root", base + 4, 1); > + hws[IMX8MP_CLK_AUDIOMIX_EDMA_ROOT] = imx_dev_clk_hw_gate(dev, "edma_root_clk", "ipg_audio_root", base + 4, 2); > + hws[IMX8MP_CLK_AUDIOMIX_AUDPLL_ROOT] = imx_dev_clk_hw_gate(dev, "aud_pll_clk", "ipg_audio_root", base + 4, 3); > + hws[IMX8MP_CLK_AUDIOMIX_MU2_ROOT] = imx_dev_clk_hw_gate(dev, "mu2_root_clk", "ipg_audio_root", base + 4, 4); > + hws[IMX8MP_CLK_AUDIOMIX_MU3_ROOT] = imx_dev_clk_hw_gate(dev, "mu3_root_clk", "ipg_audio_root", base + 4, 5); > + hws[IMX8MP_CLK_AUDIOMIX_EARC_PHY] = imx_dev_clk_hw_gate(dev, "earc_phy_clk", "ipg_audio_root", base + 4, 6); These ones are OK because they're basically setting up an array and we can't help it. > + > + hws[IMX8MP_CLK_AUDIOMIX_PDM_SEL] = imx_dev_clk_hw_mux(dev, "pdm_sel", base + 0x318, 1, 4, imx_pdm_sels, ARRAY_SIZE(imx_pdm_sels)); > + > + /* unbypass the pll */ > + clk_hw_set_parent(hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_BYPASS], hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL]); But this is long again so please don't. > + > + imx_check_clk_hws(hws, IMX8MP_CLK_AUDIOMIX_END); > + > + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_hw_data); > + > + return 0; > +} > + > +UNIVERSAL_DEV_PM_OPS(imx_audiomix_clk_pm_ops, imx_audiomix_clk_suspend, > + imx_audiomix_clk_resume, imx_audiomix_clk_resume); > + > +static const struct of_device_id imx_audiomix_clk_of_match[] = { > + { .compatible = "fsl,imx8mp-audiomix-clk" }, > + { /* Sentinel */ }, Nitpick: Drop comma after sentinel so that nothing can come after without causing compile error. > +};
diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index 799a8ef..5a8d2cb 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -27,7 +27,7 @@ obj-$(CONFIG_MXC_CLK_SCU) += \ obj-$(CONFIG_CLK_IMX8MM) += clk-imx8mm.o obj-$(CONFIG_CLK_IMX8MN) += clk-imx8mn.o -obj-$(CONFIG_CLK_IMX8MP) += clk-imx8mp.o clk-gate-shared.o +obj-$(CONFIG_CLK_IMX8MP) += clk-imx8mp.o clk-gate-shared.o clk-audiomix.o obj-$(CONFIG_CLK_IMX8MQ) += clk-imx8mq.o obj-$(CONFIG_CLK_IMX8QXP) += clk-imx8qxp.o clk-imx8qxp-lpcg.o diff --git a/drivers/clk/imx/clk-audiomix.c b/drivers/clk/imx/clk-audiomix.c new file mode 100644 index 00000000..8b84943 --- /dev/null +++ b/drivers/clk/imx/clk-audiomix.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2019 NXP. + */ + +#include <dt-bindings/clock/imx8mp-clock.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <linux/types.h> + +#include "clk.h" + +static int shared_count_pdm; +static struct clk_hw **hws; +static struct clk_hw_onecell_data *clk_hw_data; +static uint32_t audiomix_clk_saved_regs[14]; +static struct clk *clk_audio_root; +static struct clk *clk_audio_ahb; +static struct clk *clk_audio_axi_div; + +static const struct imx_pll14xx_rate_table imx_audiomix_sai_pll_tbl[] = { + PLL_1443X_RATE(650000000U, 325, 3, 2, 0), +}; + +static const struct imx_pll14xx_clk imx_audiomix_sai_pll = { + .type = PLL_1443X, + .rate_table = imx_audiomix_sai_pll_tbl, +}; + +static const char *imx_sai_mclk2_sels[] = {"sai1", "sai2", "sai3", "dummy", + "sai5", "sai6", "sai7", "dummy", + "dummy", "dummy", "dummy", + "dummy", "dummy", "dummy", "dummy"}; +static const char *imx_sai1_mclk1_sels[] = {"sai1", "dummy", }; +static const char *imx_sai2_mclk1_sels[] = {"sai2", "dummy", }; +static const char *imx_sai3_mclk1_sels[] = {"sai3", "dummy", }; +static const char *imx_sai5_mclk1_sels[] = {"sai5", "dummy", }; +static const char *imx_sai6_mclk1_sels[] = {"sai6", "dummy", }; +static const char *imx_sai7_mclk1_sels[] = {"sai7", "dummy", }; +static const char *imx_pdm_sels[] = {"pdm", "sai_pll_div2", "dummy", "dummy" }; +static const char *imx_sai_pll_ref_sels[] = {"osc_24m", "dummy", "dummy", "dummy", }; +static const char *imx_sai_pll_bypass_sels[] = {"sai_pll", "sai_pll_ref_sel", }; + +static int imx_audiomix_clk_suspend(struct device *dev) +{ + void __iomem *base; + + base = dev_get_drvdata(dev->parent); + + audiomix_clk_saved_regs[0] = readl(base); + audiomix_clk_saved_regs[1] = readl(base + 0x4); + + audiomix_clk_saved_regs[2] = readl(base + 0x300); + audiomix_clk_saved_regs[3] = readl(base + 0x304); + audiomix_clk_saved_regs[4] = readl(base + 0x308); + audiomix_clk_saved_regs[5] = readl(base + 0x30C); + audiomix_clk_saved_regs[6] = readl(base + 0x310); + audiomix_clk_saved_regs[7] = readl(base + 0x314); + audiomix_clk_saved_regs[8] = readl(base + 0x318); + + audiomix_clk_saved_regs[9] = readl(base + 0x400); + audiomix_clk_saved_regs[10] = readl(base + 0x404); + audiomix_clk_saved_regs[11] = readl(base + 0x408); + audiomix_clk_saved_regs[12] = readl(base + 0x40C); + audiomix_clk_saved_regs[13] = readl(base + 0x410); + + clk_disable_unprepare(clk_audio_ahb); + clk_disable_unprepare(clk_audio_root); + clk_disable_unprepare(clk_audio_axi_div); + pm_runtime_put(dev); + + return 0; +} + +static int imx_audiomix_clk_resume(struct device *dev) +{ + void __iomem *base; + + base = dev_get_drvdata(dev->parent); + + pm_runtime_get(dev); + clk_prepare_enable(clk_audio_ahb); + clk_prepare_enable(clk_audio_root); + clk_prepare_enable(clk_audio_axi_div); + + writel(audiomix_clk_saved_regs[0], base); + writel(audiomix_clk_saved_regs[1], base + 0x4); + + writel(audiomix_clk_saved_regs[2], base + 0x300); + writel(audiomix_clk_saved_regs[3], base + 0x304); + writel(audiomix_clk_saved_regs[4], base + 0x308); + writel(audiomix_clk_saved_regs[5], base + 0x30C); + writel(audiomix_clk_saved_regs[6], base + 0x310); + writel(audiomix_clk_saved_regs[7], base + 0x314); + writel(audiomix_clk_saved_regs[8], base + 0x318); + + writel(audiomix_clk_saved_regs[9], base + 0x400); + writel(audiomix_clk_saved_regs[10], base + 0x404); + writel(audiomix_clk_saved_regs[11], base + 0x408); + writel(audiomix_clk_saved_regs[12], base + 0x40C); + writel(audiomix_clk_saved_regs[13], base + 0x410); + + return 0; +} + +static int imx_audiomix_clk_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + void __iomem *base; + + clk_audio_root = of_clk_get_by_name(np, "audio_root"); + if (IS_ERR(clk_audio_root)) + return PTR_ERR(clk_audio_root); + + clk_audio_ahb = of_clk_get_by_name(np, "audio_ahb"); + if (IS_ERR(clk_audio_ahb)) + return PTR_ERR(clk_audio_ahb); + + clk_audio_axi_div = of_clk_get_by_name(np, "audio_axi_div"); + if (IS_ERR(clk_audio_axi_div)) + return PTR_ERR(clk_audio_axi_div); + + base = dev_get_drvdata(dev->parent); + if (IS_ERR(base)) + return PTR_ERR(base); + + clk_hw_data = kzalloc(struct_size(clk_hw_data, hws, IMX8MP_CLK_AUDIOMIX_END), GFP_KERNEL); + if (WARN_ON(!clk_hw_data)) + return -ENOMEM; + + clk_hw_data->num = IMX8MP_CLK_AUDIOMIX_END; + hws = clk_hw_data->hws; + + pm_runtime_enable(dev); + + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_REF_SEL] = imx_dev_clk_hw_mux(dev, "sai_pll_ref_sel", base + 0x400, 0, 2, imx_sai_pll_ref_sels, ARRAY_SIZE(imx_sai_pll_ref_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL] = imx_dev_clk_hw_pll14xx(dev, "sai_pll", "sai_pll_ref_sel", base + 0x400, &imx_audiomix_sai_pll); + + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_BYPASS] = imx_dev_clk_hw_mux_flags(dev, "sai_pll_bypass", base + 0x400, 4, 1, imx_sai_pll_bypass_sels, ARRAY_SIZE(imx_sai_pll_bypass_sels), CLK_SET_RATE_PARENT); + + hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_OUT] = imx_dev_clk_hw_gate(dev, "sai_pll_out", "sai_pll_bypass", base + 0x400, 13); + + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK1_SEL] = imx_dev_clk_hw_mux_flags(dev, "sai1_mclk1_sel", base + 0x300, 0, 1, imx_sai1_mclk1_sels, ARRAY_SIZE(imx_sai1_mclk1_sels), CLK_SET_RATE_PARENT); + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai1_mclk2_sel", base + 0x300, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK1_SEL] = imx_dev_clk_hw_mux_flags(dev, "sai2_mclk1_sel", base + 0x304, 0, 1, imx_sai2_mclk1_sels, ARRAY_SIZE(imx_sai2_mclk1_sels), CLK_SET_RATE_PARENT); + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai2_mclk2_sel", base + 0x304, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1_SEL] = imx_dev_clk_hw_mux_flags(dev, "sai3_mclk1_sel", base + 0x308, 0, 1, imx_sai3_mclk1_sels, ARRAY_SIZE(imx_sai3_mclk1_sels), CLK_SET_RATE_PARENT); + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai3_mclk2_sel", base + 0x308, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK1_SEL] = imx_dev_clk_hw_mux(dev, "sai5_mclk1_sel", base + 0x30C, 0, 1, imx_sai5_mclk1_sels, ARRAY_SIZE(imx_sai5_mclk1_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai5_mclk2_sel", base + 0x30C, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK1_SEL] = imx_dev_clk_hw_mux(dev, "sai6_mclk1_sel", base + 0x310, 0, 1, imx_sai6_mclk1_sels, ARRAY_SIZE(imx_sai6_mclk1_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai6_mclk2_sel", base + 0x310, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK1_SEL] = imx_dev_clk_hw_mux(dev, "sai7_mclk1_sel", base + 0x314, 0, 1, imx_sai7_mclk1_sels, ARRAY_SIZE(imx_sai7_mclk1_sels)); + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK2_SEL] = imx_dev_clk_hw_mux(dev, "sai7_mclk2_sel", base + 0x314, 1, 4, imx_sai_mclk2_sels, ARRAY_SIZE(imx_sai_mclk2_sels)); + + hws[IMX8MP_CLK_AUDIOMIX_SAI1_IPG] = imx_dev_clk_hw_gate(dev, "sai1_ipg_clk", "ipg_audio_root", base, 0); + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK1] = imx_dev_clk_hw_gate(dev, "sai1_mclk1_clk", "sai1_mclk1_sel", base, 1); + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK2] = imx_dev_clk_hw_gate(dev, "sai1_mclk2_clk", "sai1_mclk2_sel", base, 2); + hws[IMX8MP_CLK_AUDIOMIX_SAI1_MCLK3] = imx_dev_clk_hw_gate(dev, "sai1_mclk3_clk", "sai_pll_out", base, 3); + hws[IMX8MP_CLK_AUDIOMIX_SAI2_IPG] = imx_dev_clk_hw_gate(dev, "sai2_ipg_clk", "ipg_audio_root", base, 4); + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK1] = imx_dev_clk_hw_gate(dev, "sai2_mclk1_clk", "sai2_mclk1_sel", base, 5); + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK2] = imx_dev_clk_hw_gate(dev, "sai2_mclk2_clk", "sai2_mclk2_sel", base, 6); + hws[IMX8MP_CLK_AUDIOMIX_SAI2_MCLK3] = imx_dev_clk_hw_gate(dev, "sai2_mclk3_clk", "sai_pll_out", base, 7); + hws[IMX8MP_CLK_AUDIOMIX_SAI3_IPG] = imx_dev_clk_hw_gate(dev, "sai3_ipg_clk", "ipg_audio_root", base, 8); + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK1] = imx_dev_clk_hw_gate(dev, "sai3_mclk1_clk", "sai3_mclk1_sel", base, 9); + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK2] = imx_dev_clk_hw_gate(dev, "sai3_mclk2_clk", "sai3_mclk2_sel", base, 10); + hws[IMX8MP_CLK_AUDIOMIX_SAI3_MCLK3] = imx_dev_clk_hw_gate(dev, "sai3_mclk3_clk", "sai_pll_out", base, 11); + hws[IMX8MP_CLK_AUDIOMIX_SAI5_IPG] = imx_dev_clk_hw_gate(dev, "sai5_ipg_clk", "ipg_audio_root", base, 12); + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK1] = imx_dev_clk_hw_gate(dev, "sai5_mclk1_clk", "sai5_mclk1_sel", base, 13); + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK2] = imx_dev_clk_hw_gate(dev, "sai5_mclk2_clk", "sai5_mclk2_sel", base, 14); + hws[IMX8MP_CLK_AUDIOMIX_SAI5_MCLK3] = imx_dev_clk_hw_gate(dev, "sai5_mclk3_clk", "sai_pll_out", base, 15); + hws[IMX8MP_CLK_AUDIOMIX_SAI6_IPG] = imx_dev_clk_hw_gate(dev, "sai6_ipg_clk", "ipg_audio_root", base, 16); + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK1] = imx_dev_clk_hw_gate(dev, "sai6_mclk1_clk", "sai6_mclk1_sel", base, 17); + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK2] = imx_dev_clk_hw_gate(dev, "sai6_mclk2_clk", "sai6_mclk2_sel", base, 18); + hws[IMX8MP_CLK_AUDIOMIX_SAI6_MCLK3] = imx_dev_clk_hw_gate(dev, "sai6_mclk3_clk", "sai_pll_out", base, 19); + hws[IMX8MP_CLK_AUDIOMIX_SAI7_IPG] = imx_dev_clk_hw_gate(dev, "sai7_ipg_clk", "ipg_audio_root", base, 20); + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK1] = imx_dev_clk_hw_gate(dev, "sai7_mclk1_clk", "sai7_mclk1_sel", base, 21); + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK2] = imx_dev_clk_hw_gate(dev, "sai7_mclk2_clk", "sai7_mclk2_sel", base, 22); + hws[IMX8MP_CLK_AUDIOMIX_SAI7_MCLK3] = imx_dev_clk_hw_gate(dev, "sai7_mclk3_clk", "sai_pll_out", base, 23); + hws[IMX8MP_CLK_AUDIOMIX_ASRC_IPG] = imx_dev_clk_hw_gate(dev, "asrc_ipg_clk", "ipg_audio_root", base, 24); + hws[IMX8MP_CLK_AUDIOMIX_PDM_IPG] = imx_dev_clk_hw_gate_shared(dev, "pdm_ipg_clk", "ipg_audio_root", base, 25, &shared_count_pdm); + hws[IMX8MP_CLK_AUDIOMIX_PDM_ROOT] = imx_dev_clk_hw_gate_shared(dev, "pdm_root_clk", "pdm", base, 25, &shared_count_pdm); + + hws[IMX8MP_CLK_AUDIOMIX_SDMA2_ROOT] = imx_dev_clk_hw_gate(dev, "sdma2_root_clk", "ipg_audio_root", base, 26); + hws[IMX8MP_CLK_AUDIOMIX_SDMA3_ROOT] = imx_dev_clk_hw_gate(dev, "sdma3_root_clk", "ipg_audio_root", base, 27); + hws[IMX8MP_CLK_AUDIOMIX_SPBA2_ROOT] = imx_dev_clk_hw_gate(dev, "spba2_root_clk", "ipg_audio_root", base, 28); + hws[IMX8MP_CLK_AUDIOMIX_DSP_ROOT] = imx_dev_clk_hw_gate(dev, "dsp_root_clk", "ipg_audio_root", base, 29); + hws[IMX8MP_CLK_AUDIOMIX_DSPDBG_ROOT] = imx_dev_clk_hw_gate(dev, "dsp_dbg_clk", "ipg_audio_root", base, 30); + hws[IMX8MP_CLK_AUDIOMIX_EARC_IPG] = imx_dev_clk_hw_gate(dev, "earc_ipg_clk", "ipg_audio_root", base, 31); + + hws[IMX8MP_CLK_AUDIOMIX_OCRAMA_IPG] = imx_dev_clk_hw_gate(dev, "ocram_a_ipg_clk", "ipg_audio_root", base + 4, 0); + hws[IMX8MP_CLK_AUDIOMIX_AUD2HTX_IPG] = imx_dev_clk_hw_gate(dev, "aud2htx_ipg_clk", "ipg_audio_root", base + 4, 1); + hws[IMX8MP_CLK_AUDIOMIX_EDMA_ROOT] = imx_dev_clk_hw_gate(dev, "edma_root_clk", "ipg_audio_root", base + 4, 2); + hws[IMX8MP_CLK_AUDIOMIX_AUDPLL_ROOT] = imx_dev_clk_hw_gate(dev, "aud_pll_clk", "ipg_audio_root", base + 4, 3); + hws[IMX8MP_CLK_AUDIOMIX_MU2_ROOT] = imx_dev_clk_hw_gate(dev, "mu2_root_clk", "ipg_audio_root", base + 4, 4); + hws[IMX8MP_CLK_AUDIOMIX_MU3_ROOT] = imx_dev_clk_hw_gate(dev, "mu3_root_clk", "ipg_audio_root", base + 4, 5); + hws[IMX8MP_CLK_AUDIOMIX_EARC_PHY] = imx_dev_clk_hw_gate(dev, "earc_phy_clk", "ipg_audio_root", base + 4, 6); + + hws[IMX8MP_CLK_AUDIOMIX_PDM_SEL] = imx_dev_clk_hw_mux(dev, "pdm_sel", base + 0x318, 1, 4, imx_pdm_sels, ARRAY_SIZE(imx_pdm_sels)); + + /* unbypass the pll */ + clk_hw_set_parent(hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL_BYPASS], hws[IMX8MP_CLK_AUDIOMIX_SAI_PLL]); + + imx_check_clk_hws(hws, IMX8MP_CLK_AUDIOMIX_END); + + of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_hw_data); + + return 0; +} + +UNIVERSAL_DEV_PM_OPS(imx_audiomix_clk_pm_ops, imx_audiomix_clk_suspend, + imx_audiomix_clk_resume, imx_audiomix_clk_resume); + +static const struct of_device_id imx_audiomix_clk_of_match[] = { + { .compatible = "fsl,imx8mp-audiomix-clk" }, + { /* Sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, imx_audiomix_clk_of_match); + + +static struct platform_driver imx_audiomix_clk_driver = { + .probe = imx_audiomix_clk_probe, + .driver = { + .name = "imx-audiomix-clk", + .of_match_table = of_match_ptr(imx_audiomix_clk_of_match), + .pm = &imx_audiomix_clk_pm_ops, + }, +}; +module_platform_driver(imx_audiomix_clk_driver);
The imx-mix MFD driver registers some devices, one of which, in case of audiomix, maps correctly to a clock controller type. This driver registers a clock controller for that. Signed-off-by: Abel Vesa <abel.vesa@nxp.com> --- drivers/clk/imx/Makefile | 2 +- drivers/clk/imx/clk-audiomix.c | 237 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 238 insertions(+), 1 deletion(-) create mode 100644 drivers/clk/imx/clk-audiomix.c