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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /arch/arm/mach-pxa/clock-pxa3xx.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'arch/arm/mach-pxa/clock-pxa3xx.c')
-rw-r--r--arch/arm/mach-pxa/clock-pxa3xx.c212
1 files changed, 0 insertions, 212 deletions
diff --git a/arch/arm/mach-pxa/clock-pxa3xx.c b/arch/arm/mach-pxa/clock-pxa3xx.c
deleted file mode 100644
index d4e949983..000000000
--- a/arch/arm/mach-pxa/clock-pxa3xx.c
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * linux/arch/arm/mach-pxa/clock-pxa3xx.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/syscore_ops.h>
-
-#include <mach/smemc.h>
-#include <mach/pxa3xx-regs.h>
-
-#include "clock.h"
-
-/* Crystal clock: 13MHz */
-#define BASE_CLK 13000000
-
-/* Ring Oscillator Clock: 60MHz */
-#define RO_CLK 60000000
-
-#define ACCR_D0CS (1 << 26)
-#define ACCR_PCCE (1 << 11)
-
-/* crystal frequency to HSIO bus frequency multiplier (HSS) */
-static unsigned char hss_mult[4] = { 8, 12, 16, 24 };
-
-/*
- * Get the clock frequency as reflected by CCSR and the turbo flag.
- * We assume these values have been applied via a fcs.
- * If info is not 0 we also display the current settings.
- */
-unsigned int pxa3xx_get_clk_frequency_khz(int info)
-{
- unsigned long acsr, xclkcfg;
- unsigned int t, xl, xn, hss, ro, XL, XN, CLK, HSS;
-
- /* Read XCLKCFG register turbo bit */
- __asm__ __volatile__("mrc\tp14, 0, %0, c6, c0, 0" : "=r"(xclkcfg));
- t = xclkcfg & 0x1;
-
- acsr = ACSR;
-
- xl = acsr & 0x1f;
- xn = (acsr >> 8) & 0x7;
- hss = (acsr >> 14) & 0x3;
-
- XL = xl * BASE_CLK;
- XN = xn * XL;
-
- ro = acsr & ACCR_D0CS;
-
- CLK = (ro) ? RO_CLK : ((t) ? XN : XL);
- HSS = (ro) ? RO_CLK : hss_mult[hss] * BASE_CLK;
-
- if (info) {
- pr_info("RO Mode clock: %d.%02dMHz (%sactive)\n",
- RO_CLK / 1000000, (RO_CLK % 1000000) / 10000,
- (ro) ? "" : "in");
- pr_info("Run Mode clock: %d.%02dMHz (*%d)\n",
- XL / 1000000, (XL % 1000000) / 10000, xl);
- pr_info("Turbo Mode clock: %d.%02dMHz (*%d, %sactive)\n",
- XN / 1000000, (XN % 1000000) / 10000, xn,
- (t) ? "" : "in");
- pr_info("HSIO bus clock: %d.%02dMHz\n",
- HSS / 1000000, (HSS % 1000000) / 10000);
- }
-
- return CLK / 1000;
-}
-
-/*
- * Return the current AC97 clock frequency.
- */
-static unsigned long clk_pxa3xx_ac97_getrate(struct clk *clk)
-{
- unsigned long rate = 312000000;
- unsigned long ac97_div;
-
- ac97_div = AC97_DIV;
-
- /* This may loose precision for some rates but won't for the
- * standard 24.576MHz.
- */
- rate /= (ac97_div >> 12) & 0x7fff;
- rate *= (ac97_div & 0xfff);
-
- return rate;
-}
-
-/*
- * Return the current HSIO bus clock frequency
- */
-static unsigned long clk_pxa3xx_hsio_getrate(struct clk *clk)
-{
- unsigned long acsr;
- unsigned int hss, hsio_clk;
-
- acsr = ACSR;
-
- hss = (acsr >> 14) & 0x3;
- hsio_clk = (acsr & ACCR_D0CS) ? RO_CLK : hss_mult[hss] * BASE_CLK;
-
- return hsio_clk;
-}
-
-/* crystal frequency to static memory controller multiplier (SMCFS) */
-static unsigned int smcfs_mult[8] = { 6, 0, 8, 0, 0, 16, };
-static unsigned int df_clkdiv[4] = { 1, 2, 4, 1 };
-
-static unsigned long clk_pxa3xx_smemc_getrate(struct clk *clk)
-{
- unsigned long acsr = ACSR;
- unsigned long memclkcfg = __raw_readl(MEMCLKCFG);
-
- return BASE_CLK * smcfs_mult[(acsr >> 23) & 0x7] /
- df_clkdiv[(memclkcfg >> 16) & 0x3];
-}
-
-void clk_pxa3xx_cken_enable(struct clk *clk)
-{
- unsigned long mask = 1ul << (clk->cken & 0x1f);
-
- if (clk->cken < 32)
- CKENA |= mask;
- else if (clk->cken < 64)
- CKENB |= mask;
- else
- CKENC |= mask;
-}
-
-void clk_pxa3xx_cken_disable(struct clk *clk)
-{
- unsigned long mask = 1ul << (clk->cken & 0x1f);
-
- if (clk->cken < 32)
- CKENA &= ~mask;
- else if (clk->cken < 64)
- CKENB &= ~mask;
- else
- CKENC &= ~mask;
-}
-
-const struct clkops clk_pxa3xx_cken_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
-};
-
-const struct clkops clk_pxa3xx_hsio_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
- .getrate = clk_pxa3xx_hsio_getrate,
-};
-
-const struct clkops clk_pxa3xx_ac97_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
- .getrate = clk_pxa3xx_ac97_getrate,
-};
-
-const struct clkops clk_pxa3xx_smemc_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
- .getrate = clk_pxa3xx_smemc_getrate,
-};
-
-static void clk_pout_enable(struct clk *clk)
-{
- OSCC |= OSCC_PEN;
-}
-
-static void clk_pout_disable(struct clk *clk)
-{
- OSCC &= ~OSCC_PEN;
-}
-
-const struct clkops clk_pxa3xx_pout_ops = {
- .enable = clk_pout_enable,
- .disable = clk_pout_disable,
-};
-
-#ifdef CONFIG_PM
-static uint32_t cken[2];
-static uint32_t accr;
-
-static int pxa3xx_clock_suspend(void)
-{
- cken[0] = CKENA;
- cken[1] = CKENB;
- accr = ACCR;
- return 0;
-}
-
-static void pxa3xx_clock_resume(void)
-{
- ACCR = accr;
- CKENA = cken[0];
- CKENB = cken[1];
-}
-#else
-#define pxa3xx_clock_suspend NULL
-#define pxa3xx_clock_resume NULL
-#endif
-
-struct syscore_ops pxa3xx_clock_syscore_ops = {
- .suspend = pxa3xx_clock_suspend,
- .resume = pxa3xx_clock_resume,
-};