mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 23:14:31 +08:00
7a3aad90d3
The script “checkpatch.pl” pointed information out like the following: Comparison to NULL could be written !... Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
328 lines
10 KiB
C
328 lines
10 KiB
C
/*
|
|
* pxa910 clock framework source file
|
|
*
|
|
* Copyright (C) 2012 Marvell
|
|
* Chao Xie <xiechao.mail@gmail.com>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/io.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/err.h>
|
|
|
|
#include "clk.h"
|
|
|
|
#define APBC_RTC 0x28
|
|
#define APBC_TWSI0 0x2c
|
|
#define APBC_KPC 0x18
|
|
#define APBC_UART0 0x0
|
|
#define APBC_UART1 0x4
|
|
#define APBC_GPIO 0x8
|
|
#define APBC_PWM0 0xc
|
|
#define APBC_PWM1 0x10
|
|
#define APBC_PWM2 0x14
|
|
#define APBC_PWM3 0x18
|
|
#define APBC_SSP0 0x1c
|
|
#define APBC_SSP1 0x20
|
|
#define APBC_SSP2 0x4c
|
|
#define APBCP_TWSI1 0x28
|
|
#define APBCP_UART2 0x1c
|
|
#define APMU_SDH0 0x54
|
|
#define APMU_SDH1 0x58
|
|
#define APMU_USB 0x5c
|
|
#define APMU_DISP0 0x4c
|
|
#define APMU_CCIC0 0x50
|
|
#define APMU_DFC 0x60
|
|
#define MPMU_UART_PLL 0x14
|
|
|
|
static DEFINE_SPINLOCK(clk_lock);
|
|
|
|
static struct mmp_clk_factor_masks uart_factor_masks = {
|
|
.factor = 2,
|
|
.num_mask = 0x1fff,
|
|
.den_mask = 0x1fff,
|
|
.num_shift = 16,
|
|
.den_shift = 0,
|
|
};
|
|
|
|
static struct mmp_clk_factor_tbl uart_factor_tbl[] = {
|
|
{.num = 8125, .den = 1536}, /*14.745MHZ */
|
|
};
|
|
|
|
static const char *uart_parent[] = {"pll1_3_16", "uart_pll"};
|
|
static const char *ssp_parent[] = {"pll1_96", "pll1_48", "pll1_24", "pll1_12"};
|
|
static const char *sdh_parent[] = {"pll1_12", "pll1_13"};
|
|
static const char *disp_parent[] = {"pll1_2", "pll1_12"};
|
|
static const char *ccic_parent[] = {"pll1_2", "pll1_12"};
|
|
static const char *ccic_phy_parent[] = {"pll1_6", "pll1_12"};
|
|
|
|
void __init pxa910_clk_init(phys_addr_t mpmu_phys, phys_addr_t apmu_phys,
|
|
phys_addr_t apbc_phys, phys_addr_t apbcp_phys)
|
|
{
|
|
struct clk *clk;
|
|
struct clk *uart_pll;
|
|
void __iomem *mpmu_base;
|
|
void __iomem *apmu_base;
|
|
void __iomem *apbcp_base;
|
|
void __iomem *apbc_base;
|
|
|
|
mpmu_base = ioremap(mpmu_phys, SZ_4K);
|
|
if (!mpmu_base) {
|
|
pr_err("error to ioremap MPMU base\n");
|
|
return;
|
|
}
|
|
|
|
apmu_base = ioremap(apmu_phys, SZ_4K);
|
|
if (!apmu_base) {
|
|
pr_err("error to ioremap APMU base\n");
|
|
return;
|
|
}
|
|
|
|
apbcp_base = ioremap(apbcp_phys, SZ_4K);
|
|
if (!apbcp_base) {
|
|
pr_err("error to ioremap APBC extension base\n");
|
|
return;
|
|
}
|
|
|
|
apbc_base = ioremap(apbc_phys, SZ_4K);
|
|
if (!apbc_base) {
|
|
pr_err("error to ioremap APBC base\n");
|
|
return;
|
|
}
|
|
|
|
clk = clk_register_fixed_rate(NULL, "clk32", NULL, 0, 3200);
|
|
clk_register_clkdev(clk, "clk32", NULL);
|
|
|
|
clk = clk_register_fixed_rate(NULL, "vctcxo", NULL, 0, 26000000);
|
|
clk_register_clkdev(clk, "vctcxo", NULL);
|
|
|
|
clk = clk_register_fixed_rate(NULL, "pll1", NULL, 0, 624000000);
|
|
clk_register_clkdev(clk, "pll1", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_2", "pll1",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_2", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_4", "pll1_2",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_4", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_8", "pll1_4",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_8", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_16", "pll1_8",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_16", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_6", "pll1_2",
|
|
CLK_SET_RATE_PARENT, 1, 3);
|
|
clk_register_clkdev(clk, "pll1_6", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_12", "pll1_6",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_12", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_24", "pll1_12",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_24", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_48", "pll1_24",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_48", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_96", "pll1_48",
|
|
CLK_SET_RATE_PARENT, 1, 2);
|
|
clk_register_clkdev(clk, "pll1_96", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_13", "pll1",
|
|
CLK_SET_RATE_PARENT, 1, 13);
|
|
clk_register_clkdev(clk, "pll1_13", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_13_1_5", "pll1",
|
|
CLK_SET_RATE_PARENT, 2, 3);
|
|
clk_register_clkdev(clk, "pll1_13_1_5", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_2_1_5", "pll1",
|
|
CLK_SET_RATE_PARENT, 2, 3);
|
|
clk_register_clkdev(clk, "pll1_2_1_5", NULL);
|
|
|
|
clk = clk_register_fixed_factor(NULL, "pll1_3_16", "pll1",
|
|
CLK_SET_RATE_PARENT, 3, 16);
|
|
clk_register_clkdev(clk, "pll1_3_16", NULL);
|
|
|
|
uart_pll = mmp_clk_register_factor("uart_pll", "pll1_4", 0,
|
|
mpmu_base + MPMU_UART_PLL,
|
|
&uart_factor_masks, uart_factor_tbl,
|
|
ARRAY_SIZE(uart_factor_tbl), &clk_lock);
|
|
clk_set_rate(uart_pll, 14745600);
|
|
clk_register_clkdev(uart_pll, "uart_pll", NULL);
|
|
|
|
clk = mmp_clk_register_apbc("twsi0", "pll1_13_1_5",
|
|
apbc_base + APBC_TWSI0, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa2xx-i2c.0");
|
|
|
|
clk = mmp_clk_register_apbc("twsi1", "pll1_13_1_5",
|
|
apbcp_base + APBCP_TWSI1, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa2xx-i2c.1");
|
|
|
|
clk = mmp_clk_register_apbc("gpio", "vctcxo",
|
|
apbc_base + APBC_GPIO, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "mmp-gpio");
|
|
|
|
clk = mmp_clk_register_apbc("kpc", "clk32",
|
|
apbc_base + APBC_KPC, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa27x-keypad");
|
|
|
|
clk = mmp_clk_register_apbc("rtc", "clk32",
|
|
apbc_base + APBC_RTC, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "sa1100-rtc");
|
|
|
|
clk = mmp_clk_register_apbc("pwm0", "pll1_48",
|
|
apbc_base + APBC_PWM0, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa910-pwm.0");
|
|
|
|
clk = mmp_clk_register_apbc("pwm1", "pll1_48",
|
|
apbc_base + APBC_PWM1, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa910-pwm.1");
|
|
|
|
clk = mmp_clk_register_apbc("pwm2", "pll1_48",
|
|
apbc_base + APBC_PWM2, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa910-pwm.2");
|
|
|
|
clk = mmp_clk_register_apbc("pwm3", "pll1_48",
|
|
apbc_base + APBC_PWM3, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa910-pwm.3");
|
|
|
|
clk = clk_register_mux(NULL, "uart0_mux", uart_parent,
|
|
ARRAY_SIZE(uart_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apbc_base + APBC_UART0, 4, 3, 0, &clk_lock);
|
|
clk_set_parent(clk, uart_pll);
|
|
clk_register_clkdev(clk, "uart_mux.0", NULL);
|
|
|
|
clk = mmp_clk_register_apbc("uart0", "uart0_mux",
|
|
apbc_base + APBC_UART0, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa2xx-uart.0");
|
|
|
|
clk = clk_register_mux(NULL, "uart1_mux", uart_parent,
|
|
ARRAY_SIZE(uart_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apbc_base + APBC_UART1, 4, 3, 0, &clk_lock);
|
|
clk_set_parent(clk, uart_pll);
|
|
clk_register_clkdev(clk, "uart_mux.1", NULL);
|
|
|
|
clk = mmp_clk_register_apbc("uart1", "uart1_mux",
|
|
apbc_base + APBC_UART1, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa2xx-uart.1");
|
|
|
|
clk = clk_register_mux(NULL, "uart2_mux", uart_parent,
|
|
ARRAY_SIZE(uart_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apbcp_base + APBCP_UART2, 4, 3, 0, &clk_lock);
|
|
clk_set_parent(clk, uart_pll);
|
|
clk_register_clkdev(clk, "uart_mux.2", NULL);
|
|
|
|
clk = mmp_clk_register_apbc("uart2", "uart2_mux",
|
|
apbcp_base + APBCP_UART2, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa2xx-uart.2");
|
|
|
|
clk = clk_register_mux(NULL, "ssp0_mux", ssp_parent,
|
|
ARRAY_SIZE(ssp_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apbc_base + APBC_SSP0, 4, 3, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "uart_mux.0", NULL);
|
|
|
|
clk = mmp_clk_register_apbc("ssp0", "ssp0_mux",
|
|
apbc_base + APBC_SSP0, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "mmp-ssp.0");
|
|
|
|
clk = clk_register_mux(NULL, "ssp1_mux", ssp_parent,
|
|
ARRAY_SIZE(ssp_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apbc_base + APBC_SSP1, 4, 3, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "ssp_mux.1", NULL);
|
|
|
|
clk = mmp_clk_register_apbc("ssp1", "ssp1_mux",
|
|
apbc_base + APBC_SSP1, 10, 0, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "mmp-ssp.1");
|
|
|
|
clk = mmp_clk_register_apmu("dfc", "pll1_4",
|
|
apmu_base + APMU_DFC, 0x19b, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "pxa3xx-nand.0");
|
|
|
|
clk = clk_register_mux(NULL, "sdh0_mux", sdh_parent,
|
|
ARRAY_SIZE(sdh_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apmu_base + APMU_SDH0, 6, 1, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "sdh0_mux", NULL);
|
|
|
|
clk = mmp_clk_register_apmu("sdh0", "sdh_mux",
|
|
apmu_base + APMU_SDH0, 0x1b, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "sdhci-pxa.0");
|
|
|
|
clk = clk_register_mux(NULL, "sdh1_mux", sdh_parent,
|
|
ARRAY_SIZE(sdh_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apmu_base + APMU_SDH1, 6, 1, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "sdh1_mux", NULL);
|
|
|
|
clk = mmp_clk_register_apmu("sdh1", "sdh1_mux",
|
|
apmu_base + APMU_SDH1, 0x1b, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "sdhci-pxa.1");
|
|
|
|
clk = mmp_clk_register_apmu("usb", "usb_pll",
|
|
apmu_base + APMU_USB, 0x9, &clk_lock);
|
|
clk_register_clkdev(clk, "usb_clk", NULL);
|
|
|
|
clk = mmp_clk_register_apmu("sph", "usb_pll",
|
|
apmu_base + APMU_USB, 0x12, &clk_lock);
|
|
clk_register_clkdev(clk, "sph_clk", NULL);
|
|
|
|
clk = clk_register_mux(NULL, "disp0_mux", disp_parent,
|
|
ARRAY_SIZE(disp_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apmu_base + APMU_DISP0, 6, 1, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "disp_mux.0", NULL);
|
|
|
|
clk = mmp_clk_register_apmu("disp0", "disp0_mux",
|
|
apmu_base + APMU_DISP0, 0x1b, &clk_lock);
|
|
clk_register_clkdev(clk, NULL, "mmp-disp.0");
|
|
|
|
clk = clk_register_mux(NULL, "ccic0_mux", ccic_parent,
|
|
ARRAY_SIZE(ccic_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apmu_base + APMU_CCIC0, 6, 1, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "ccic_mux.0", NULL);
|
|
|
|
clk = mmp_clk_register_apmu("ccic0", "ccic0_mux",
|
|
apmu_base + APMU_CCIC0, 0x1b, &clk_lock);
|
|
clk_register_clkdev(clk, "fnclk", "mmp-ccic.0");
|
|
|
|
clk = clk_register_mux(NULL, "ccic0_phy_mux", ccic_phy_parent,
|
|
ARRAY_SIZE(ccic_phy_parent),
|
|
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
|
|
apmu_base + APMU_CCIC0, 7, 1, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "ccic_phy_mux.0", NULL);
|
|
|
|
clk = mmp_clk_register_apmu("ccic0_phy", "ccic0_phy_mux",
|
|
apmu_base + APMU_CCIC0, 0x24, &clk_lock);
|
|
clk_register_clkdev(clk, "phyclk", "mmp-ccic.0");
|
|
|
|
clk = clk_register_divider(NULL, "ccic0_sphy_div", "ccic0_mux",
|
|
CLK_SET_RATE_PARENT, apmu_base + APMU_CCIC0,
|
|
10, 5, 0, &clk_lock);
|
|
clk_register_clkdev(clk, "sphyclk_div", NULL);
|
|
|
|
clk = mmp_clk_register_apmu("ccic0_sphy", "ccic0_sphy_div",
|
|
apmu_base + APMU_CCIC0, 0x300, &clk_lock);
|
|
clk_register_clkdev(clk, "sphyclk", "mmp-ccic.0");
|
|
}
|