3  * linux/sound/soc/hisilicon/hi3660-i2s.c
5  * I2S IP driver for hi3660.
31 #include "hi3660-i2s.h"
56 static void update_bits(struct hi3660_i2s *i2s, u32 ofs, u32 reset, u32 set)  in update_bits()  argument
58 	u32 val = readl(i2s->base + ofs) & ~reset;  in update_bits()
60 	writel(val | set, i2s->base + ofs);  in update_bits()
63 static void update_bits_syscon(struct hi3660_i2s *i2s,  in update_bits_syscon()  argument
66 	u32 val = readl(i2s->base_syscon + ofs) & ~reset;  in update_bits_syscon()
68 	writel(val | set, i2s->base_syscon + ofs);  in update_bits_syscon()
71 static int enable_format(struct hi3660_i2s *i2s,  in enable_format()  argument
74 	switch (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) {  in enable_format()
76 		i2s->master = false;  in enable_format()
77 		update_bits_syscon(i2s, HI_ASP_CFG_R_CLK_SEL_REG,  in enable_format()
81 		i2s->master = true;  in enable_format()
82 		update_bits_syscon(i2s, HI_ASP_CFG_R_CLK_SEL_REG,  in enable_format()
95 	struct hi3660_i2s *i2s = dev_get_drvdata(cpu_dai->dev);  in startup()  local
98 	update_bits_syscon(i2s, HI_ASP_CFG_R_RST_CTRLDIS_REG,  in startup()
102 	update_bits_syscon(i2s, HI_ASP_CFG_R_GATE_EN_REG,  in startup()
106 	update_bits_syscon(i2s, HI_ASP_CFG_R_GATE_CLKDIV_EN_REG,  in startup()
110 	update_bits_syscon(i2s, HI_ASP_CFG_R_CLK_SEL_REG,  in startup()
114 	update_bits_syscon(i2s, HI_ASP_CFG_R_CLK1_DIV_REG,  in startup()
116 	update_bits_syscon(i2s, HI_ASP_CFG_R_CLK4_DIV_REG,  in startup()
118 	update_bits_syscon(i2s, HI_ASP_CFG_R_CLK6_DIV_REG,  in startup()
122 	update_bits(i2s, HI_ASP_SIO_MODE_REG, HI_ASP_MASK, 0x0);  in startup()
123 	update_bits(i2s, HI_ASP_SIO_DATA_WIDTH_SET_REG, HI_ASP_MASK, 0x9);  in startup()
124 	update_bits(i2s, HI_ASP_SIO_I2S_POS_MERGE_EN_REG, HI_ASP_MASK, 0x1);  in startup()
125 	update_bits(i2s, HI_ASP_SIO_I2S_START_POS_REG, HI_ASP_MASK, 0x0);  in startup()
133 	struct hi3660_i2s *i2s = dev_get_drvdata(cpu_dai->dev);  in shutdown()  local
135 	if (!IS_ERR_OR_NULL(i2s->asp_subsys_clk))  in shutdown()
136 		clk_disable_unprepare(i2s->asp_subsys_clk);  in shutdown()
141 	struct hi3660_i2s *i2s = dev_get_drvdata(cpu_dai->dev);  in txctrl()  local
143 	spin_lock(&i2s->lock);  in txctrl()
147 		update_bits(i2s, HI_ASP_SIO_CT_SET_REG, 0,  in txctrl()
156 		update_bits(i2s, HI_ASP_SIO_CT_CLR_REG, 0,  in txctrl()
159 	spin_unlock(&i2s->lock);  in txctrl()
164 	struct hi3660_i2s *i2s = dev_get_drvdata(cpu_dai->dev);  in rxctrl()  local
166 	spin_lock(&i2s->lock);  in rxctrl()
169 		update_bits(i2s, HI_ASP_SIO_CT_SET_REG, 0,  in rxctrl()
178 		update_bits(i2s, HI_ASP_SIO_CT_CLR_REG, 0,  in rxctrl()
180 	spin_unlock(&i2s->lock);  in rxctrl()
191 	struct hi3660_i2s *i2s = dev_get_drvdata(cpu_dai->dev);  in set_format()  local
193 	i2s->format = fmt;  in set_format()
194 	i2s->master = (i2s->format & SND_SOC_DAIFMT_MASTER_MASK) ==  in set_format()
204 	struct hi3660_i2s *i2s = dev_get_drvdata(cpu_dai->dev);  in hw_params()  local
209 	enable_format(i2s, substream);  in hw_params()
214 		dma_data->addr = i2s->base_phys +  in hw_params()
217 		dma_data->addr = i2s->base_phys +  in hw_params()
223 		i2s->bits = 16;  in hw_params()
229 		i2s->bits = 32;  in hw_params()
268 	struct hi3660_i2s *i2s = snd_soc_dai_get_drvdata(dai);  in dai_probe()  local
271 		&i2s->dma_data[SNDRV_PCM_STREAM_PLAYBACK],  in dai_probe()
272 		&i2s->dma_data[SNDRV_PCM_STREAM_CAPTURE]);  in dai_probe()
336 	struct hi3660_i2s *i2s;  in hi3660_i2s_probe()  local
340 	i2s = devm_kzalloc(dev, sizeof(*i2s), GFP_KERNEL);  in hi3660_i2s_probe()
341 	if (!i2s)  in hi3660_i2s_probe()
344 	i2s->dev = dev;  in hi3660_i2s_probe()
345 	spin_lock_init(&i2s->lock);  in hi3660_i2s_probe()
352 	i2s->base_phys = (phys_addr_t)res->start;  in hi3660_i2s_probe()
354 	i2s->dai = dai_init;  in hi3660_i2s_probe()
355 	dev_set_drvdata(&pdev->dev, i2s);  in hi3660_i2s_probe()
357 	i2s->base = devm_ioremap_resource(dev, res);  in hi3660_i2s_probe()
358 	if (IS_ERR(i2s->base)) {  in hi3660_i2s_probe()
360 		ret = PTR_ERR(i2s->base);  in hi3660_i2s_probe()
369 	i2s->base_syscon = devm_ioremap(dev, res->start, resource_size(res));  in hi3660_i2s_probe()
370 	if (IS_ERR(i2s->base_syscon)) {  in hi3660_i2s_probe()
372 		ret = PTR_ERR(i2s->base_syscon);  in hi3660_i2s_probe()
376 	/* i2s iomux config */  in hi3660_i2s_probe()
377 	i2s->pctrl = devm_pinctrl_get(dev);  in hi3660_i2s_probe()
378 	if (IS_ERR(i2s->pctrl)) {  in hi3660_i2s_probe()
384 	i2s->pin_default = pinctrl_lookup_state(i2s->pctrl,  in hi3660_i2s_probe()
386 	if (IS_ERR(i2s->pin_default)) {  in hi3660_i2s_probe()
389 			PTR_ERR(i2s->pin_default));  in hi3660_i2s_probe()
394 	if (pinctrl_select_state(i2s->pctrl, i2s->pin_default)) {  in hi3660_i2s_probe()
406 				&i2s->dai, 1);  in hi3660_i2s_probe()
417 	struct hi3660_i2s *i2s = dev_get_drvdata(&pdev->dev);  in hi3660_i2s_remove()  local
422 	pinctrl_put(i2s->pctrl);  in hi3660_i2s_remove()
428 	{ .compatible = "hisilicon,hi3660-i2s-1.0" },
446 MODULE_DESCRIPTION("Hisilicon I2S driver");