summaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-s3c64xx
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-s3c64xx')
-rw-r--r--arch/arm/plat-s3c64xx/cpu.c5
-rw-r--r--arch/arm/plat-s3c64xx/cpufreq.c40
-rw-r--r--arch/arm/plat-s3c64xx/gpiolib.c12
-rw-r--r--arch/arm/plat-s3c64xx/include/plat/gpio-bank-c.h6
-rw-r--r--arch/arm/plat-s3c64xx/irq-eint.c19
-rw-r--r--arch/arm/plat-s3c64xx/setup-sdhci-gpio.c20
6 files changed, 78 insertions, 24 deletions
diff --git a/arch/arm/plat-s3c64xx/cpu.c b/arch/arm/plat-s3c64xx/cpu.c
index b1fdd83940a..49796d2db86 100644
--- a/arch/arm/plat-s3c64xx/cpu.c
+++ b/arch/arm/plat-s3c64xx/cpu.c
@@ -107,6 +107,11 @@ static struct map_desc s3c_iodesc[] __initdata = {
.pfn = __phys_to_pfn(S3C64XX_PA_WATCHDOG),
.length = SZ_4K,
.type = MT_DEVICE,
+ }, {
+ .virtual = (unsigned long)S3C_VA_USB_HSPHY,
+ .pfn = __phys_to_pfn(S3C64XX_PA_USB_HSPHY),
+ .length = SZ_1K,
+ .type = MT_DEVICE,
},
};
diff --git a/arch/arm/plat-s3c64xx/cpufreq.c b/arch/arm/plat-s3c64xx/cpufreq.c
index e6e0843215d..74c0e8347de 100644
--- a/arch/arm/plat-s3c64xx/cpufreq.c
+++ b/arch/arm/plat-s3c64xx/cpufreq.c
@@ -19,6 +19,7 @@
static struct clk *armclk;
static struct regulator *vddarm;
+static unsigned long regulator_latency;
#ifdef CONFIG_CPU_S3C6410
struct s3c64xx_dvfs {
@@ -27,11 +28,10 @@ struct s3c64xx_dvfs {
};
static struct s3c64xx_dvfs s3c64xx_dvfs_table[] = {
- [0] = { 1000000, 1000000 },
- [1] = { 1000000, 1050000 },
- [2] = { 1050000, 1100000 },
- [3] = { 1050000, 1150000 },
- [4] = { 1250000, 1350000 },
+ [0] = { 1000000, 1150000 },
+ [1] = { 1050000, 1150000 },
+ [2] = { 1100000, 1150000 },
+ [3] = { 1200000, 1350000 },
};
static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
@@ -41,9 +41,9 @@ static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
{ 1, 266000 },
{ 2, 333000 },
{ 2, 400000 },
- { 3, 532000 },
- { 3, 533000 },
- { 4, 667000 },
+ { 2, 532000 },
+ { 2, 533000 },
+ { 3, 667000 },
{ 0, CPUFREQ_TABLE_END },
};
#endif
@@ -141,7 +141,7 @@ err:
}
#ifdef CONFIG_REGULATOR
-static void __init s3c64xx_cpufreq_constrain_voltages(void)
+static void __init s3c64xx_cpufreq_config_regulator(void)
{
int count, v, i, found;
struct cpufreq_frequency_table *freq;
@@ -150,11 +150,10 @@ static void __init s3c64xx_cpufreq_constrain_voltages(void)
count = regulator_count_voltages(vddarm);
if (count < 0) {
pr_err("cpufreq: Unable to check supported voltages\n");
- return;
}
freq = s3c64xx_freq_table;
- while (freq->frequency != CPUFREQ_TABLE_END) {
+ while (count > 0 && freq->frequency != CPUFREQ_TABLE_END) {
if (freq->frequency == CPUFREQ_ENTRY_INVALID)
continue;
@@ -175,6 +174,10 @@ static void __init s3c64xx_cpufreq_constrain_voltages(void)
freq++;
}
+
+ /* Guess based on having to do an I2C/SPI write; in future we
+ * will be able to query the regulator performance here. */
+ regulator_latency = 1 * 1000 * 1000;
}
#endif
@@ -206,7 +209,7 @@ static int __init s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
pr_err("cpufreq: Only frequency scaling available\n");
vddarm = NULL;
} else {
- s3c64xx_cpufreq_constrain_voltages();
+ s3c64xx_cpufreq_config_regulator();
}
#endif
@@ -217,8 +220,11 @@ static int __init s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
/* Check for frequencies we can generate */
r = clk_round_rate(armclk, freq->frequency * 1000);
r /= 1000;
- if (r != freq->frequency)
+ if (r != freq->frequency) {
+ pr_debug("cpufreq: %dkHz unsupported by clock\n",
+ freq->frequency);
freq->frequency = CPUFREQ_ENTRY_INVALID;
+ }
/* If we have no regulator then assume startup
* frequency is the maximum we can support. */
@@ -230,9 +236,11 @@ static int __init s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
policy->cur = clk_get_rate(armclk) / 1000;
- /* Pick a conservative guess in ns: we'll need ~1 I2C/SPI
- * write plus clock reprogramming. */
- policy->cpuinfo.transition_latency = 2 * 1000 * 1000;
+ /* Datasheet says PLL stabalisation time (if we were to use
+ * the PLLs, which we don't currently) is ~300us worst case,
+ * but add some fudge.
+ */
+ policy->cpuinfo.transition_latency = (500 * 1000) + regulator_latency;
ret = cpufreq_frequency_table_cpuinfo(policy, s3c64xx_freq_table);
if (ret != 0) {
diff --git a/arch/arm/plat-s3c64xx/gpiolib.c b/arch/arm/plat-s3c64xx/gpiolib.c
index 92859290ea3..77856045727 100644
--- a/arch/arm/plat-s3c64xx/gpiolib.c
+++ b/arch/arm/plat-s3c64xx/gpiolib.c
@@ -213,6 +213,11 @@ static struct s3c_gpio_cfg gpio_4bit_cfg_eint0011 = {
.get_pull = s3c_gpio_getpull_updown,
};
+int s3c64xx_gpio2int_gpm(struct gpio_chip *chip, unsigned pin)
+{
+ return pin < 5 ? IRQ_EINT(23) + pin : -ENXIO;
+}
+
static struct s3c_gpio_chip gpio_4bit[] = {
{
.base = S3C64XX_GPA_BASE,
@@ -269,10 +274,16 @@ static struct s3c_gpio_chip gpio_4bit[] = {
.base = S3C64XX_GPM(0),
.ngpio = S3C64XX_GPIO_M_NR,
.label = "GPM",
+ .to_irq = s3c64xx_gpio2int_gpm,
},
},
};
+int s3c64xx_gpio2int_gpl(struct gpio_chip *chip, unsigned pin)
+{
+ return pin >= 8 ? IRQ_EINT(16) + pin - 8 : -ENXIO;
+}
+
static struct s3c_gpio_chip gpio_4bit2[] = {
{
.base = S3C64XX_GPH_BASE + 0x4,
@@ -297,6 +308,7 @@ static struct s3c_gpio_chip gpio_4bit2[] = {
.base = S3C64XX_GPL(0),
.ngpio = S3C64XX_GPIO_L_NR,
.label = "GPL",
+ .to_irq = s3c64xx_gpio2int_gpl,
},
},
};
diff --git a/arch/arm/plat-s3c64xx/include/plat/gpio-bank-c.h b/arch/arm/plat-s3c64xx/include/plat/gpio-bank-c.h
index c47daf7e272..e22b49f4f98 100644
--- a/arch/arm/plat-s3c64xx/include/plat/gpio-bank-c.h
+++ b/arch/arm/plat-s3c64xx/include/plat/gpio-bank-c.h
@@ -36,18 +36,18 @@
#define S3C64XX_GPC4_SPI_MISO1 (0x02 << 16)
#define S3C64XX_GPC4_MMC2_CMD (0x03 << 16)
-#define S3C64XX_GPC4_I2S0_V40_DO (0x05 << 16)
+#define S3C64XX_GPC4_I2S_V40_DO0 (0x05 << 16)
#define S3C64XX_GPC4_EINT_G2_4 (0x07 << 16)
#define S3C64XX_GPC5_SPI_CLK1 (0x02 << 20)
#define S3C64XX_GPC5_MMC2_CLK (0x03 << 20)
-#define S3C64XX_GPC5_I2S1_V40_DO (0x05 << 20)
+#define S3C64XX_GPC5_I2S_V40_DO1 (0x05 << 20)
#define S3C64XX_GPC5_EINT_G2_5 (0x07 << 20)
#define S3C64XX_GPC6_SPI_MOSI1 (0x02 << 24)
#define S3C64XX_GPC6_EINT_G2_6 (0x07 << 24)
#define S3C64XX_GPC7_SPI_nCS1 (0x02 << 28)
-#define S3C64XX_GPC7_I2S2_V40_DO (0x05 << 28)
+#define S3C64XX_GPC7_I2S_V40_DO2 (0x05 << 28)
#define S3C64XX_GPC7_EINT_G2_7 (0x07 << 28)
diff --git a/arch/arm/plat-s3c64xx/irq-eint.c b/arch/arm/plat-s3c64xx/irq-eint.c
index f81b7b818ba..ebdf183a091 100644
--- a/arch/arm/plat-s3c64xx/irq-eint.c
+++ b/arch/arm/plat-s3c64xx/irq-eint.c
@@ -65,7 +65,7 @@ static void s3c_irq_eint_maskack(unsigned int irq)
static int s3c_irq_eint_set_type(unsigned int irq, unsigned int type)
{
int offs = eint_offset(irq);
- int pin;
+ int pin, pin_val;
int shift;
u32 ctrl, mask;
u32 newvalue = 0;
@@ -109,7 +109,10 @@ static int s3c_irq_eint_set_type(unsigned int irq, unsigned int type)
return -1;
}
- shift = (offs / 2) * 4;
+ if (offs <= 15)
+ shift = (offs / 2) * 4;
+ else
+ shift = ((offs - 16) / 2) * 4;
mask = 0x7 << shift;
ctrl = __raw_readl(reg);
@@ -119,12 +122,18 @@ static int s3c_irq_eint_set_type(unsigned int irq, unsigned int type)
/* set the GPIO pin appropriately */
- if (offs < 23)
+ if (offs < 16) {
pin = S3C64XX_GPN(offs);
- else
+ pin_val = S3C_GPIO_SFN(2);
+ } else if (offs < 23) {
+ pin = S3C64XX_GPL(offs + 8 - 16);
+ pin_val = S3C_GPIO_SFN(3);
+ } else {
pin = S3C64XX_GPM(offs - 23);
+ pin_val = S3C_GPIO_SFN(3);
+ }
- s3c_gpio_cfgpin(pin, S3C_GPIO_SFN(2));
+ s3c_gpio_cfgpin(pin, pin_val);
return 0;
}
diff --git a/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
index 5417123b0ac..a58c0cc7ba5 100644
--- a/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
+++ b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
@@ -53,3 +53,23 @@ void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
}
+
+void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
+{
+ unsigned int gpio;
+ unsigned int end;
+
+ end = S3C64XX_GPH(6 + width);
+
+ /* Set all the necessary GPH pins to special-function 1 */
+ for (gpio = S3C64XX_GPH(6); gpio < end; gpio++) {
+ s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+ s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+ }
+
+ /* Set all the necessary GPC pins to special-function 1 */
+ for (gpio = S3C64XX_GPC(4); gpio < S3C64XX_GPC(6); gpio++) {
+ s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
+ s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+ }
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-21 16:10:54 +0000