1#include <linux/module.h>
2#include <linux/kernel.h>
3#include <linux/init.h>
4#include <linux/list.h>
5#include <linux/io.h>
6#include <linux/clk.h>
7
8#include <mach/addr-map.h>
9
10#include "common.h"
11#include "clock.h"
12
13/*
14 * APB Clock register offsets for MMP2
15 */
16#define APBC_RTC	APBC_REG(0x000)
17#define APBC_TWSI1	APBC_REG(0x004)
18#define APBC_TWSI2	APBC_REG(0x008)
19#define APBC_TWSI3	APBC_REG(0x00c)
20#define APBC_TWSI4	APBC_REG(0x010)
21#define APBC_KPC	APBC_REG(0x018)
22#define APBC_UART1	APBC_REG(0x02c)
23#define APBC_UART2	APBC_REG(0x030)
24#define APBC_UART3	APBC_REG(0x034)
25#define APBC_GPIO	APBC_REG(0x038)
26#define APBC_PWM0	APBC_REG(0x03c)
27#define APBC_PWM1	APBC_REG(0x040)
28#define APBC_PWM2	APBC_REG(0x044)
29#define APBC_PWM3	APBC_REG(0x048)
30#define APBC_SSP0	APBC_REG(0x04c)
31#define APBC_SSP1	APBC_REG(0x050)
32#define APBC_SSP2	APBC_REG(0x054)
33#define APBC_SSP3	APBC_REG(0x058)
34#define APBC_SSP4	APBC_REG(0x05c)
35#define APBC_SSP5	APBC_REG(0x060)
36#define APBC_TWSI5	APBC_REG(0x07c)
37#define APBC_TWSI6	APBC_REG(0x080)
38#define APBC_UART4	APBC_REG(0x088)
39
40#define APMU_USB	APMU_REG(0x05c)
41#define APMU_NAND	APMU_REG(0x060)
42#define APMU_SDH0	APMU_REG(0x054)
43#define APMU_SDH1	APMU_REG(0x058)
44#define APMU_SDH2	APMU_REG(0x0e8)
45#define APMU_SDH3	APMU_REG(0x0ec)
46
47static void sdhc_clk_enable(struct clk *clk)
48{
49	uint32_t clk_rst;
50
51	clk_rst  =  __raw_readl(clk->clk_rst);
52	clk_rst |= clk->enable_val;
53	__raw_writel(clk_rst, clk->clk_rst);
54}
55
56static void sdhc_clk_disable(struct clk *clk)
57{
58	uint32_t clk_rst;
59
60	clk_rst  =  __raw_readl(clk->clk_rst);
61	clk_rst &= ~clk->enable_val;
62	__raw_writel(clk_rst, clk->clk_rst);
63}
64
65struct clkops sdhc_clk_ops = {
66	.enable		= sdhc_clk_enable,
67	.disable	= sdhc_clk_disable,
68};
69
70/* APB peripheral clocks */
71static APBC_CLK(uart1, UART1, 1, 26000000);
72static APBC_CLK(uart2, UART2, 1, 26000000);
73static APBC_CLK(uart3, UART3, 1, 26000000);
74static APBC_CLK(uart4, UART4, 1, 26000000);
75static APBC_CLK(twsi1, TWSI1, 0, 26000000);
76static APBC_CLK(twsi2, TWSI2, 0, 26000000);
77static APBC_CLK(twsi3, TWSI3, 0, 26000000);
78static APBC_CLK(twsi4, TWSI4, 0, 26000000);
79static APBC_CLK(twsi5, TWSI5, 0, 26000000);
80static APBC_CLK(twsi6, TWSI6, 0, 26000000);
81static APBC_CLK(gpio, GPIO, 0, 26000000);
82
83static APMU_CLK(nand, NAND, 0xbf, 100000000);
84static APMU_CLK_OPS(sdh0, SDH0, 0x1b, 200000000, &sdhc_clk_ops);
85static APMU_CLK_OPS(sdh1, SDH1, 0x1b, 200000000, &sdhc_clk_ops);
86static APMU_CLK_OPS(sdh2, SDH2, 0x1b, 200000000, &sdhc_clk_ops);
87static APMU_CLK_OPS(sdh3, SDH3, 0x1b, 200000000, &sdhc_clk_ops);
88
89static struct clk_lookup mmp2_clkregs[] = {
90	INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
91	INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
92	INIT_CLKREG(&clk_uart3, "pxa2xx-uart.2", NULL),
93	INIT_CLKREG(&clk_uart4, "pxa2xx-uart.3", NULL),
94	INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.0", NULL),
95	INIT_CLKREG(&clk_twsi2, "pxa2xx-i2c.1", NULL),
96	INIT_CLKREG(&clk_twsi3, "pxa2xx-i2c.2", NULL),
97	INIT_CLKREG(&clk_twsi4, "pxa2xx-i2c.3", NULL),
98	INIT_CLKREG(&clk_twsi5, "pxa2xx-i2c.4", NULL),
99	INIT_CLKREG(&clk_twsi6, "pxa2xx-i2c.5", NULL),
100	INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
101	INIT_CLKREG(&clk_gpio, "mmp2-gpio", NULL),
102	INIT_CLKREG(&clk_sdh0, "sdhci-pxav3.0", "PXA-SDHCLK"),
103	INIT_CLKREG(&clk_sdh1, "sdhci-pxav3.1", "PXA-SDHCLK"),
104	INIT_CLKREG(&clk_sdh2, "sdhci-pxav3.2", "PXA-SDHCLK"),
105	INIT_CLKREG(&clk_sdh3, "sdhci-pxav3.3", "PXA-SDHCLK"),
106};
107
108void __init mmp2_clk_init(void)
109{
110	clkdev_add_table(ARRAY_AND_SIZE(mmp2_clkregs));
111}
112