aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-pxa/pxa3xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-pxa/pxa3xx.c')
-rw-r--r--arch/arm/mach-pxa/pxa3xx.c234
1 files changed, 28 insertions, 206 deletions
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index d1c747cdacf..e14818f5d95 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -22,6 +22,7 @@
#include <linux/io.h>
#include <linux/sysdev.h>
+#include <asm/mach/map.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <mach/pxa3xx-regs.h>
@@ -30,193 +31,16 @@
#include <mach/pm.h>
#include <mach/dma.h>
#include <mach/regs-intc.h>
+#include <mach/smemc.h>
#include <plat/i2c.h>
#include "generic.h"
#include "devices.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)
-
#define PECR_IE(n) ((1 << ((n) * 2)) << 28)
#define PECR_IS(n) ((1 << ((n) * 2)) << 29)
-/* crystal frequency to static memory controller multiplier (SMCFS) */
-static unsigned char smcfs_mult[8] = { 6, 0, 8, 0, 0, 16, };
-
-/* 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;
-}
-
-void pxa3xx_clear_reset_status(unsigned int mask)
-{
- /* RESET_STATUS_* has a 1:1 mapping with ARSR */
- ARSR = mask;
-}
-
-/*
- * 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;
-}
-
-void clk_pxa3xx_cken_enable(struct clk *clk)
-{
- unsigned long mask = 1ul << (clk->cken & 0x1f);
-
- if (clk->cken < 32)
- CKENA |= mask;
- else
- CKENB |= mask;
-}
-
-void clk_pxa3xx_cken_disable(struct clk *clk)
-{
- unsigned long mask = 1ul << (clk->cken & 0x1f);
-
- if (clk->cken < 32)
- CKENA &= ~mask;
- else
- CKENB &= ~mask;
-}
-
-const struct clkops clk_pxa3xx_cken_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
-};
-
-static const struct clkops clk_pxa3xx_hsio_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
- .getrate = clk_pxa3xx_hsio_getrate,
-};
-
-static const struct clkops clk_pxa3xx_ac97_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
- .getrate = clk_pxa3xx_ac97_getrate,
-};
-
-static void clk_pout_enable(struct clk *clk)
-{
- OSCC |= OSCC_PEN;
-}
-
-static void clk_pout_disable(struct clk *clk)
-{
- OSCC &= ~OSCC_PEN;
-}
-
-static const struct clkops clk_pout_ops = {
- .enable = clk_pout_enable,
- .disable = clk_pout_disable,
-};
-
-static void clk_dummy_enable(struct clk *clk)
-{
-}
-
-static void clk_dummy_disable(struct clk *clk)
-{
-}
-
-static const struct clkops clk_dummy_ops = {
- .enable = clk_dummy_enable,
- .disable = clk_dummy_disable,
-};
-
-static struct clk clk_pxa3xx_pout = {
- .ops = &clk_pout_ops,
- .rate = 13000000,
- .delay = 70,
-};
-
-static struct clk clk_dummy = {
- .ops = &clk_dummy_ops,
-};
-
-static DEFINE_PXA3_CK(pxa3xx_lcd, LCD, &clk_pxa3xx_hsio_ops);
-static DEFINE_PXA3_CK(pxa3xx_camera, CAMERA, &clk_pxa3xx_hsio_ops);
-static DEFINE_PXA3_CK(pxa3xx_ac97, AC97, &clk_pxa3xx_ac97_ops);
static DEFINE_PXA3_CKEN(pxa3xx_ffuart, FFUART, 14857000, 1);
static DEFINE_PXA3_CKEN(pxa3xx_btuart, BTUART, 14857000, 1);
static DEFINE_PXA3_CKEN(pxa3xx_stuart, STUART, 14857000, 1);
@@ -234,6 +58,12 @@ static DEFINE_PXA3_CKEN(pxa3xx_pwm1, PWM1, 13000000, 0);
static DEFINE_PXA3_CKEN(pxa3xx_mmc1, MMC1, 19500000, 0);
static DEFINE_PXA3_CKEN(pxa3xx_mmc2, MMC2, 19500000, 0);
+static DEFINE_CK(pxa3xx_lcd, LCD, &clk_pxa3xx_hsio_ops);
+static DEFINE_CK(pxa3xx_smemc, SMC, &clk_pxa3xx_smemc_ops);
+static DEFINE_CK(pxa3xx_camera, CAMERA, &clk_pxa3xx_hsio_ops);
+static DEFINE_CK(pxa3xx_ac97, AC97, &clk_pxa3xx_ac97_ops);
+static DEFINE_CLK(pxa3xx_pout, &clk_pxa3xx_pout_ops, 13000000, 70);
+
static struct clk_lookup pxa3xx_clkregs[] = {
INIT_CLKREG(&clk_pxa3xx_pout, NULL, "CLK_POUT"),
/* Power I2C clock is always on */
@@ -258,6 +88,7 @@ static struct clk_lookup pxa3xx_clkregs[] = {
INIT_CLKREG(&clk_pxa3xx_pwm1, "pxa27x-pwm.1", NULL),
INIT_CLKREG(&clk_pxa3xx_mmc1, "pxa2xx-mci.0", NULL),
INIT_CLKREG(&clk_pxa3xx_mmc2, "pxa2xx-mci.1", NULL),
+ INIT_CLKREG(&clk_pxa3xx_smemc, "pxa2xx-pcmcia", NULL),
};
#ifdef CONFIG_PM
@@ -268,30 +99,6 @@ static struct clk_lookup pxa3xx_clkregs[] = {
static void __iomem *sram;
static unsigned long wakeup_src;
-#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
-#define RESTORE(x) x = sleep_save[SLEEP_SAVE_##x]
-
-enum { SLEEP_SAVE_CKENA,
- SLEEP_SAVE_CKENB,
- SLEEP_SAVE_ACCR,
-
- SLEEP_SAVE_COUNT,
-};
-
-static void pxa3xx_cpu_pm_save(unsigned long *sleep_save)
-{
- SAVE(CKENA);
- SAVE(CKENB);
- SAVE(ACCR);
-}
-
-static void pxa3xx_cpu_pm_restore(unsigned long *sleep_save)
-{
- RESTORE(ACCR);
- RESTORE(CKENA);
- RESTORE(CKENB);
-}
-
/*
* Enter a standby mode (S0D1C2 or S0D2C2). Upon wakeup, the dynamic
* memory controller has to be reinitialised, so we place some code
@@ -390,9 +197,6 @@ static int pxa3xx_cpu_pm_valid(suspend_state_t state)
}
static struct pxa_cpu_pm_fns pxa3xx_cpu_pm_fns = {
- .save_count = SLEEP_SAVE_COUNT,
- .save = pxa3xx_cpu_pm_save,
- .restore = pxa3xx_cpu_pm_restore,
.valid = pxa3xx_cpu_pm_valid,
.enter = pxa3xx_cpu_pm_enter,
};
@@ -580,6 +384,22 @@ void __init pxa3xx_init_irq(void)
pxa_init_gpio(IRQ_GPIO_2_x, 2, 127, NULL);
}
+static struct map_desc pxa3xx_io_desc[] __initdata = {
+ { /* Mem Ctl */
+ .virtual = SMEMC_VIRT,
+ .pfn = __phys_to_pfn(PXA3XX_SMEMC_BASE),
+ .length = 0x00200000,
+ .type = MT_DEVICE
+ }
+};
+
+void __init pxa3xx_map_io(void)
+{
+ pxa_map_io();
+ iotable_init(ARRAY_AND_SIZE(pxa3xx_io_desc));
+ pxa3xx_get_clk_frequency_khz(1);
+}
+
/*
* device registration specific to PXA3xx.
*/
@@ -615,7 +435,9 @@ static struct sys_device pxa3xx_sysdev[] = {
.cls = &pxa3xx_mfp_sysclass,
}, {
.cls = &pxa_gpio_sysclass,
- },
+ }, {
+ .cls = &pxa3xx_clock_sysclass,
+ }
};
static int __init pxa3xx_init(void)
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-26 00:57:45 +0000