1 #include <linux/kernel.h>
2 #include <linux/module.h>
3 #include <linux/delay.h>
4 #include <linux/mfd/core.h>
5 #include <linux/slab.h>
6 #include <linux/mfd/rk616.h>
7 #include <mach/iomux.h>
9 #include <linux/uaccess.h>
10 #if defined(CONFIG_DEBUG_FS)
12 #include <linux/debugfs.h>
13 #include <linux/seq_file.h>
16 #if defined(RK616_MIPI_DSI)
17 #include "../video/rockchip/transmitter/rk616_mipi_dsi.h"
21 #define MHZ (1000*1000)
24 static struct mfd_cell rk616_devs[] = {
30 .name = "rk616-codec",
43 extern int rk_mipi_dsi_init_lite(void);
44 void rk616_mclk_set_rate(struct clk *mclk,unsigned long rate)
46 clk_set_rate(mclk, rate);
49 static int rk616_i2c_read_reg(struct mfd_rk616 *rk616, u16 reg,u32 *pval)
51 struct i2c_client * client = rk616->client;
52 struct i2c_adapter *adap = client->adapter;
53 struct i2c_msg msgs[2];
57 memcpy(reg_buf, ®, 2);
59 msgs[0].addr = client->addr;
60 msgs[0].flags = client->flags;
62 msgs[0].buf = reg_buf;
63 msgs[0].scl_rate = rk616->pdata->scl_rate;
64 msgs[0].udelay = client->udelay;
66 msgs[1].addr = client->addr;
67 msgs[1].flags = client->flags | I2C_M_RD;
69 msgs[1].buf = (char *)pval;
70 msgs[1].scl_rate = rk616->pdata->scl_rate;
71 msgs[1].udelay = client->udelay;
73 ret = i2c_transfer(adap, msgs, 2);
76 return (ret == 2)? 4 : ret;
80 static int rk616_i2c_write_reg(struct mfd_rk616 *rk616, u16 reg,u32 *pval)
82 struct i2c_client *client = rk616->client;
83 struct i2c_adapter *adap = client->adapter;
86 char *tx_buf = (char *)kmalloc(6, GFP_KERNEL);
90 memcpy(tx_buf, ®, 2);
91 memcpy(tx_buf+2, (char *)pval, 4);
93 msg.addr = client->addr;
94 msg.flags = client->flags;
96 msg.buf = (char *)tx_buf;
97 msg.scl_rate = rk616->pdata->scl_rate;
98 msg.udelay = client->udelay;
100 ret = i2c_transfer(adap, &msg, 1);
103 return (ret == 1) ? 4 : ret;
107 static int rk616_i2c_write_bits(struct mfd_rk616 *rk616, u16 reg,u32 mask,u32 *pval)
110 struct i2c_client *client = rk616->client;
111 struct i2c_adapter *adap = client->adapter;
117 tx_buf = (char *)kmalloc(6, GFP_KERNEL);
121 mutex_lock(&rk616->reg_lock);
122 rk616->read_dev(rk616,reg,®_val);
127 memcpy(tx_buf, ®, 2);
128 memcpy(tx_buf+2, (char *)pval, 4);
130 msg.addr = client->addr;
131 msg.flags = client->flags;
133 msg.buf = (char *)tx_buf;
134 msg.scl_rate = rk616->pdata->scl_rate;
135 msg.udelay = client->udelay;
137 ret = i2c_transfer(adap, &msg, 1);
139 mutex_unlock(&rk616->reg_lock);
141 return (ret == 1) ? 4 : ret;
145 static int rk616_i2c_bulk_write(struct mfd_rk616 *rk616, u16 reg,int count,u32 *pval)
147 const struct i2c_client *client = rk616->client;
148 struct i2c_adapter *adap=client->adapter;
153 char *tx_buf = (char *)kmalloc((count<<2) + 2, GFP_KERNEL);
157 memcpy(tx_buf, ®, 2);
158 memcpy(tx_buf+2, (char *)pval, count<<2);
160 msg.addr = client->addr;
161 msg.flags = client->flags;
162 msg.len = (count<<2) + 2;
163 msg.buf = (char *)tx_buf;
164 msg.scl_rate = rk616->pdata->scl_rate;
165 msg.udelay = client->udelay;
167 ret = i2c_transfer(adap, &msg, 1);
170 return (ret == 1) ? count : ret;
173 #if defined(CONFIG_DEBUG_FS)
175 static int rk616_reg_show(struct seq_file *s, void *v)
179 struct mfd_rk616 *rk616 = s->private;
182 dev_err(rk616->dev,"no mfd rk616!\n");
186 for(i=0;i<= CRU_CFGMISC_CON;i+=4)
188 rk616->read_dev(rk616,i,&val);
190 seq_printf(s,"\n0x%04x:",i);
191 seq_printf(s," %08x",val);
198 static ssize_t rk616_reg_write (struct file *file, const char __user *buf, size_t count, loff_t *ppos)
200 struct mfd_rk616 *rk616 = file->f_path.dentry->d_inode->i_private;
205 if (copy_from_user(kbuf, buf, count))
207 sscanf(kbuf, "%x%x", ®,&val);
208 rk616->write_dev(rk616,reg,&val);
212 static int rk616_reg_open(struct inode *inode, struct file *file)
214 struct mfd_rk616 *rk616 = inode->i_private;
215 return single_open(file,rk616_reg_show,rk616);
218 static const struct file_operations rk616_reg_fops = {
219 .owner = THIS_MODULE,
220 .open = rk616_reg_open,
222 .write = rk616_reg_write,
224 .release = single_release,
229 static u32 rk616_clk_gcd(u32 numerator, u32 denominator)
233 if (!numerator || !denominator)
236 if (numerator > denominator) {
254 static int rk616_pll_par_calc(u32 fin_hz,u32 fout_hz,u32 *refdiv, u32 *fbdiv,
255 u32 *postdiv1, u32 *postdiv2, u32 *frac)
257 // FIXME set postdiv1/2 always 1
261 if(!fin_hz || !fout_hz)
264 if(fin_hz / MHZ * MHZ == fin_hz && fout_hz /MHZ * MHZ == fout_hz)
268 gcd = rk616_clk_gcd(fin_hz, fout_hz);
269 *refdiv = fin_hz / gcd;
270 *fbdiv = fout_hz / gcd;
280 gcd = rk616_clk_gcd(fin_hz / MHZ, fout_hz / MHZ);
281 *refdiv = fin_hz / MHZ / gcd;
282 *fbdiv = fout_hz / MHZ / gcd;
288 f_frac = (fout_hz % MHZ);
290 do_div(fin_64, (u64)*refdiv);
291 frac_64 = (u64)f_frac << 24;
292 do_div(frac_64, fin_64);
293 *frac = (u32) frac_64;
294 printk(KERN_INFO "frac_64=%llx, frac=%u\n", frac_64, *frac);
296 printk(KERN_INFO "fin=%u,fout=%u,gcd=%u,refdiv=%u,fbdiv=%u,postdiv1=%u,postdiv2=%u,frac=%u\n",
297 fin_hz, fout_hz, gcd, *refdiv, *fbdiv, *postdiv1, *postdiv2, *frac);
302 static int rk616_pll_wait_lock(struct mfd_rk616 *rk616,int id)
319 ret = rk616->read_dev(rk616,CRU_PLL0_CON1 + offset,&val);
322 rk616_dbg(rk616->dev,"PLL%d locked\n",id);
330 dev_err(rk616->dev,"rk616 wait PLL%d lock time out!\n",id);
338 int rk616_pll_pwr_down(struct mfd_rk616 *rk616,int id)
353 val = PLL0_PWR_DN | (PLL0_PWR_DN << 16);
354 ret = rk616->write_dev(rk616,CRU_PLL0_CON1 + offset,&val);
362 int rk616_pll_set_rate(struct mfd_rk616 *rk616,int id,u32 cfg_val,u32 frac)
367 u16 con0 = cfg_val & 0xffff;
368 u16 con1 = (cfg_val >> 16)&0xffff;
369 u32 fbdiv = con0 & 0xfff;
370 u32 postdiv1 = (con0 >> 12)&0x7;
371 u32 refdiv = con1 & 0x3f;
372 u32 postdiv2 = (con1 >> 6) & 0x7;
377 if(((rk616->pll0_rate >> 32) == cfg_val) &&
378 ((rk616->pll0_rate & 0xffffffff) == frac))
382 rk616->pll0_rate = ((u64)cfg_val << 32) | frac;
387 if(((rk616->pll1_rate >> 32) == cfg_val) &&
388 ((rk616->pll1_rate & 0xffffffff) == frac))
392 rk616->pll1_rate = ((u64)cfg_val << 32) | frac;
397 val = PLL0_PWR_DN | (PLL0_PWR_DN << 16);
398 ret = rk616->write_dev(rk616,CRU_PLL0_CON1 + offset,&val);
401 ret = rk616->read_dev(rk616,CRU_PLL0_CON2 + offset,&val);
404 val |= PLL0_FRAC(frac);
406 val |= 0x800000; //default value
407 ret = rk616->write_dev(rk616,CRU_PLL0_CON2 + offset,&val);
409 val = PLL0_POSTDIV1(postdiv1) | PLL0_FBDIV(fbdiv) | PLL0_POSTDIV1_MASK |
410 PLL0_FBDIV_MASK | (PLL0_BYPASS << 16);
411 ret = rk616->write_dev(rk616,CRU_PLL0_CON0 + offset,&val);
413 val = PLL0_DIV_MODE(mode) | PLL0_POSTDIV2(postdiv2) | PLL0_REFDIV(refdiv) |
414 (PLL0_DIV_MODE_MASK) | PLL0_POSTDIV2_MASK | PLL0_REFDIV_MASK;
415 ret = rk616->write_dev(rk616,CRU_PLL0_CON1 + offset,&val);
417 val = (PLL0_PWR_DN << 16);
418 ret = rk616->write_dev(rk616,CRU_PLL0_CON1 + offset,&val);
420 rk616_pll_wait_lock(rk616,id);
427 /***********************************
428 default clk patch settiing:
430 LCD_DCLK0--->PLL0--->Dither--->LVDS/MIPI
431 LCD_DCLK1--->PLL1--->HDMI
432 ************************************/
434 static int rk616_clk_common_init(struct mfd_rk616 *rk616)
439 val = PLL1_CLK_SEL(LCD1_DCLK) | PLL0_CLK_SEL(LCD0_DCLK) | LCD1_CLK_DIV(0) |
440 LCD0_CLK_DIV(0) | PLL1_CLK_SEL_MASK | PLL0_CLK_SEL_MASK |
441 LCD1_CLK_DIV_MASK | LCD0_CLK_DIV_MASK; //pll1 clk from lcdc1_dclk,pll0 clk from lcdc0_dclk,mux_lcdx = lcdx_clk
442 ret = rk616->write_dev(rk616,CRU_CLKSEL0_CON,&val);
444 val = SCLK_SEL(SCLK_SEL_PLL1) | CODEC_MCLK_SEL(CODEC_MCLK_SEL_12M) |
445 CODEC_MCLK_SEL_MASK | SCLK_SEL_MASK; //codec mclk from clkin
446 ret = rk616->write_dev(rk616,CRU_CLKSEL1_CON,&val);
448 val = 0; //codec mck = clkin
449 ret = rk616->write_dev(rk616,CRU_CODEC_DIV,&val);
451 val = (PLL0_BYPASS) | (PLL0_BYPASS << 16); //bypass pll0
452 ret = rk616->write_dev(rk616,CRU_PLL0_CON0,&val);
453 val = PLL0_PWR_DN | (PLL0_PWR_DN << 16);
454 ret = rk616->write_dev(rk616,CRU_PLL0_CON1,&val); //power down pll0
456 val = (PLL1_BYPASS) | (PLL1_BYPASS << 16);
457 ret = rk616->write_dev(rk616,CRU_PLL1_CON0,&val);
463 static int rk616_core_suspend(struct device *dev, pm_message_t state)
468 static int rk616_core_resume(struct device* dev)
470 struct mfd_rk616 *rk616 = dev_get_drvdata(dev);
471 rk616_clk_common_init(rk616);
476 static struct rk616_platform_data *rk616_parse_dt(struct mfd_rk616 *rk616)
478 struct rk616_platform_data *pdata = NULL;
479 struct device_node *rk616_np = rk616->dev->of_node;
480 int val = 0,gpio = 0;
483 printk("could not find rk616 node\n");
487 pdata = devm_kzalloc(rk616->dev, sizeof(struct rk616_platform_data), GFP_KERNEL);
489 dev_err(&rk616->dev, "rk616_platform_data kmalloc fail!");
493 if(!of_property_read_u32(rk616_np, "rk616,scl_rate", &val))
494 pdata->scl_rate = val;
496 if(!of_property_read_u32(rk616_np, "rk616,lcd0_func", &val))
497 pdata->lcd0_func = val;
499 if(!of_property_read_u32(rk616_np, "rk616,lcd1_func", &val))
500 pdata->lcd1_func = val;
502 if(!of_property_read_u32(rk616_np, "rk616,lvds_ch_nr", &val))
503 pdata->lvds_ch_nr = val;
505 gpio = of_get_named_gpio(rk616_np,"rk616,hdmi_irq_gpio", 0);
506 if (!gpio_is_valid(gpio))
507 printk("invalid hdmi_irq_gpio: %d\n",gpio);
508 pdata->hdmi_irq = gpio;
510 gpio = of_get_named_gpio(rk616_np,"rk616,spk_ctl_gpio", 0);
511 if (!gpio_is_valid(gpio))
512 printk("invalid spk_ctl_gpio: %d\n",gpio);
513 pdata->spk_ctl_gpio = gpio;
514 //TODO Daisen >>pwr gpio wait to add
519 static struct rk616_platform_data *rk616_parse_dt(struct mfd_rk616 *rk616)
526 static int rk616_i2c_probe(struct i2c_client *client,const struct i2c_device_id *id)
529 struct mfd_rk616 *rk616 = NULL;
532 if (client->dev.of_node) {
533 if (!of_match_device(rk616_dt_ids, &client->dev)) {
534 dev_err(&client->dev, "Failed to find matching dt id\n");
539 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
541 dev_err(&client->dev, "Must have I2C_FUNC_I2C.\n");
544 rk616 = kzalloc(sizeof(struct mfd_rk616), GFP_KERNEL);
547 printk(KERN_ALERT "alloc for struct rk616 fail\n");
551 rk616->dev = &client->dev;
552 rk616->pdata = rk616_parse_dt(rk616);
553 rk616->client = client;
554 i2c_set_clientdata(client, rk616);
555 dev_set_drvdata(rk616->dev,rk616);
557 #if defined(CONFIG_SND_RK29_SOC_I2S_8CH)
558 iis_clk = clk_get_sys("rk29_i2s.0", "i2s");
559 #elif defined(CONFIG_SND_RK29_SOC_I2S_2CH)
560 iis_clk = clk_get_sys("rk29_i2s.1", "i2s");
562 iis_clk = clk_get_sys("rk29_i2s.2", "i2s");
566 dev_err(&client->dev,"failed to get i2s clk\n");
567 ret = PTR_ERR(iis_clk);
571 rk616->mclk = iis_clk;
573 #if defined(CONFIG_ARCH_RK29)
574 rk29_mux_api_set(GPIO2D0_I2S0CLK_MIIRXCLKIN_NAME, GPIO2H_I2S0_CLK);
576 iomux_set(I2S0_MCLK);
579 //clk_set_rate(iis_clk, 11289600);
580 rk616_mclk_set_rate(iis_clk,11289600);
584 mutex_init(&rk616->reg_lock);
586 if(rk616->pdata->power_init)
587 rk616->pdata->power_init();
589 rk616->read_dev = rk616_i2c_read_reg;
590 rk616->write_dev = rk616_i2c_write_reg;
591 rk616->write_dev_bits = rk616_i2c_write_bits;
592 rk616->write_bulk = rk616_i2c_bulk_write;
594 #if defined(CONFIG_DEBUG_FS)
595 rk616->debugfs_dir = debugfs_create_dir("rk616", NULL);
596 if (IS_ERR(rk616->debugfs_dir))
598 dev_err(rk616->dev,"failed to create debugfs dir for rk616!\n");
601 debugfs_create_file("core", S_IRUSR,rk616->debugfs_dir,rk616,&rk616_reg_fops);
603 rk616_clk_common_init(rk616);
604 ret = mfd_add_devices(rk616->dev, -1,
605 rk616_devs, ARRAY_SIZE(rk616_devs),
606 NULL, rk616->irq_base);
608 dev_info(&client->dev,"rk616 core probe success!\n");
612 static int __devexit rk616_i2c_remove(struct i2c_client *client)
617 static void rk616_core_shutdown(struct i2c_client *client)
619 struct mfd_rk616 *rk616 = i2c_get_clientdata(client);
620 if(rk616->pdata->power_deinit)
621 rk616->pdata->power_deinit();
625 #if defined(CONFIG_OF)
626 static const struct of_device_id rk616_dt_ids[] = {
627 {.compatible = "rockchip,rk616",},
630 MODULE_DEVICE_TABLE(of, rk616_dt_ids);
634 static const struct i2c_device_id id_table[] = {
639 static struct i2c_driver rk616_i2c_driver = {
642 .owner = THIS_MODULE,
643 .suspend = &rk616_core_suspend,
644 .resume = &rk616_core_resume,
645 .of_match_table = of_match_ptr(rk616_dt_ids),
647 .probe = &rk616_i2c_probe,
648 .remove = &rk616_i2c_remove,
649 .shutdown = &rk616_core_shutdown,
650 .id_table = id_table,
654 static int __init rk616_module_init(void)
656 return i2c_add_driver(&rk616_i2c_driver);
659 static void __exit rk616_module_exit(void)
661 i2c_del_driver(&rk616_i2c_driver);
664 subsys_initcall_sync(rk616_module_init);
665 module_exit(rk616_module_exit);