#include "exynos_thermal_common.h"
#include "exynos_tmu.h"
-#include "exynos_tmu_data.h"
+
+/* Exynos generic registers */
+#define EXYNOS_TMU_REG_TRIMINFO 0x0
+#define EXYNOS_TMU_REG_CONTROL 0x20
+#define EXYNOS_TMU_REG_STATUS 0x28
+#define EXYNOS_TMU_REG_CURRENT_TEMP 0x40
+#define EXYNOS_TMU_REG_INTEN 0x70
+#define EXYNOS_TMU_REG_INTSTAT 0x74
+#define EXYNOS_TMU_REG_INTCLEAR 0x78
+
+#define EXYNOS_TMU_TEMP_MASK 0xff
+#define EXYNOS_TMU_REF_VOLTAGE_SHIFT 24
+#define EXYNOS_TMU_REF_VOLTAGE_MASK 0x1f
+#define EXYNOS_TMU_BUF_SLOPE_SEL_MASK 0xf
+#define EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT 8
+#define EXYNOS_TMU_CORE_EN_SHIFT 0
+
+/* Exynos3250 specific registers */
+#define EXYNOS_TMU_TRIMINFO_CON1 0x10
+
+/* Exynos4210 specific registers */
+#define EXYNOS4210_TMU_REG_THRESHOLD_TEMP 0x44
+#define EXYNOS4210_TMU_REG_TRIG_LEVEL0 0x50
+
+/* Exynos5250, Exynos4412, Exynos3250 specific registers */
+#define EXYNOS_TMU_TRIMINFO_CON2 0x14
+#define EXYNOS_THD_TEMP_RISE 0x50
+#define EXYNOS_THD_TEMP_FALL 0x54
+#define EXYNOS_EMUL_CON 0x80
+
+#define EXYNOS_TRIMINFO_RELOAD_ENABLE 1
+#define EXYNOS_TRIMINFO_25_SHIFT 0
+#define EXYNOS_TRIMINFO_85_SHIFT 8
+#define EXYNOS_TMU_TRIP_MODE_SHIFT 13
+#define EXYNOS_TMU_TRIP_MODE_MASK 0x7
+#define EXYNOS_TMU_THERM_TRIP_EN_SHIFT 12
+
+#define EXYNOS_TMU_INTEN_RISE0_SHIFT 0
+#define EXYNOS_TMU_INTEN_RISE1_SHIFT 4
+#define EXYNOS_TMU_INTEN_RISE2_SHIFT 8
+#define EXYNOS_TMU_INTEN_RISE3_SHIFT 12
+#define EXYNOS_TMU_INTEN_FALL0_SHIFT 16
+
+#define EXYNOS_EMUL_TIME 0x57F0
+#define EXYNOS_EMUL_TIME_MASK 0xffff
+#define EXYNOS_EMUL_TIME_SHIFT 16
+#define EXYNOS_EMUL_DATA_SHIFT 8
+#define EXYNOS_EMUL_DATA_MASK 0xFF
+#define EXYNOS_EMUL_ENABLE 0x1
+
+/* Exynos5260 specific */
+#define EXYNOS5260_TMU_REG_INTEN 0xC0
+#define EXYNOS5260_TMU_REG_INTSTAT 0xC4
+#define EXYNOS5260_TMU_REG_INTCLEAR 0xC8
+#define EXYNOS5260_EMUL_CON 0x100
+
+/* Exynos4412 specific */
+#define EXYNOS4412_MUX_ADDR_VALUE 6
+#define EXYNOS4412_MUX_ADDR_SHIFT 20
+
+/*exynos5440 specific registers*/
+#define EXYNOS5440_TMU_S0_7_TRIM 0x000
+#define EXYNOS5440_TMU_S0_7_CTRL 0x020
+#define EXYNOS5440_TMU_S0_7_DEBUG 0x040
+#define EXYNOS5440_TMU_S0_7_TEMP 0x0f0
+#define EXYNOS5440_TMU_S0_7_TH0 0x110
+#define EXYNOS5440_TMU_S0_7_TH1 0x130
+#define EXYNOS5440_TMU_S0_7_TH2 0x150
+#define EXYNOS5440_TMU_S0_7_IRQEN 0x210
+#define EXYNOS5440_TMU_S0_7_IRQ 0x230
+/* exynos5440 common registers */
+#define EXYNOS5440_TMU_IRQ_STATUS 0x000
+#define EXYNOS5440_TMU_PMIN 0x004
+
+#define EXYNOS5440_TMU_INTEN_RISE0_SHIFT 0
+#define EXYNOS5440_TMU_INTEN_RISE1_SHIFT 1
+#define EXYNOS5440_TMU_INTEN_RISE2_SHIFT 2
+#define EXYNOS5440_TMU_INTEN_RISE3_SHIFT 3
+#define EXYNOS5440_TMU_INTEN_FALL0_SHIFT 4
+#define EXYNOS5440_TMU_TH_RISE4_SHIFT 24
+#define EXYNOS5440_EFUSE_SWAP_OFFSET 8
/**
* struct exynos_tmu_data : A structure to hold the private data of the TMU
* @temp_error2: fused value of the second point trim.
* @regulator: pointer to the TMU regulator structure.
* @reg_conf: pointer to structure to register with core thermal.
+ * @tmu_initialize: SoC specific TMU initialization method
+ * @tmu_control: SoC specific TMU control method
+ * @tmu_read: SoC specific TMU temperature read method
+ * @tmu_set_emulation: SoC specific TMU emulation setting method
+ * @tmu_clear_irqs: SoC specific TMU interrupts clearing method
*/
struct exynos_tmu_data {
int id;
u8 temp_error1, temp_error2;
struct regulator *regulator;
struct thermal_sensor_conf *reg_conf;
+ int (*tmu_initialize)(struct platform_device *pdev);
+ void (*tmu_control)(struct platform_device *pdev, bool on);
+ int (*tmu_read)(struct exynos_tmu_data *data);
+ void (*tmu_set_emulation)(struct exynos_tmu_data *data,
+ unsigned long temp);
+ void (*tmu_clear_irqs)(struct exynos_tmu_data *data);
};
/*
return temp;
}
-static void exynos_tmu_clear_irqs(struct exynos_tmu_data *data)
-{
- const struct exynos_tmu_registers *reg = data->pdata->registers;
- unsigned int val_irq;
-
- val_irq = readl(data->base + reg->tmu_intstat);
- /*
- * Clear the interrupts. Please note that the documentation for
- * Exynos3250, Exynos4412, Exynos5250 and Exynos5260 incorrectly
- * states that INTCLEAR register has a different placing of bits
- * responsible for FALL IRQs than INTSTAT register. Exynos5420
- * and Exynos5440 documentation is correct (Exynos4210 doesn't
- * support FALL IRQs at all).
- */
- writel(val_irq, data->base + reg->tmu_intclear);
-}
-
-static int exynos_tmu_initialize(struct platform_device *pdev)
+static void sanitize_temp_error(struct exynos_tmu_data *data, u32 trim_info)
{
- struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct exynos_tmu_platform_data *pdata = data->pdata;
- const struct exynos_tmu_registers *reg = pdata->registers;
- unsigned int status, trim_info = 0, con, ctrl;
- unsigned int rising_threshold = 0, falling_threshold = 0;
- int ret = 0, threshold_code, i;
-
- mutex_lock(&data->lock);
- clk_enable(data->clk);
- if (!IS_ERR(data->clk_sec))
- clk_enable(data->clk_sec);
- if (TMU_SUPPORTS(pdata, READY_STATUS)) {
- status = readb(data->base + reg->tmu_status);
- if (!status) {
- ret = -EBUSY;
- goto out;
- }
- }
-
- if (TMU_SUPPORTS(pdata, TRIM_RELOAD)) {
- for (i = 0; i < reg->triminfo_ctrl_count; i++) {
- if (pdata->triminfo_reload[i]) {
- ctrl = readl(data->base +
- reg->triminfo_ctrl[i]);
- ctrl |= pdata->triminfo_reload[i];
- writel(ctrl, data->base +
- reg->triminfo_ctrl[i]);
- }
- }
- }
-
- /* Save trimming info in order to perform calibration */
- if (data->soc == SOC_ARCH_EXYNOS5440) {
- /*
- * For exynos5440 soc triminfo value is swapped between TMU0 and
- * TMU2, so the below logic is needed.
- */
- switch (data->id) {
- case 0:
- trim_info = readl(data->base +
- EXYNOS5440_EFUSE_SWAP_OFFSET + reg->triminfo_data);
- break;
- case 1:
- trim_info = readl(data->base + reg->triminfo_data);
- break;
- case 2:
- trim_info = readl(data->base -
- EXYNOS5440_EFUSE_SWAP_OFFSET + reg->triminfo_data);
- }
- } else {
- /* On exynos5420 the triminfo register is in the shared space */
- if (data->soc == SOC_ARCH_EXYNOS5420_TRIMINFO)
- trim_info = readl(data->base_second +
- reg->triminfo_data);
- else
- trim_info = readl(data->base + reg->triminfo_data);
- }
data->temp_error1 = trim_info & EXYNOS_TMU_TEMP_MASK;
data->temp_error2 = ((trim_info >> EXYNOS_TRIMINFO_85_SHIFT) &
EXYNOS_TMU_TEMP_MASK);
data->temp_error2 =
(pdata->efuse_value >> EXYNOS_TRIMINFO_85_SHIFT) &
EXYNOS_TMU_TEMP_MASK;
+}
- rising_threshold = readl(data->base + reg->threshold_th0);
+static u32 get_th_reg(struct exynos_tmu_data *data, u32 threshold, bool falling)
+{
+ struct exynos_tmu_platform_data *pdata = data->pdata;
+ int i;
- if (data->soc == SOC_ARCH_EXYNOS4210) {
- /* Write temperature code for threshold */
- threshold_code = temp_to_code(data, pdata->threshold);
- writeb(threshold_code,
- data->base + reg->threshold_temp);
- for (i = 0; i < pdata->non_hw_trigger_levels; i++)
- writeb(pdata->trigger_levels[i], data->base +
- reg->threshold_th0 + i * sizeof(reg->threshold_th0));
+ for (i = 0; i < pdata->non_hw_trigger_levels; i++) {
+ u8 temp = pdata->trigger_levels[i];
- exynos_tmu_clear_irqs(data);
- } else {
- /* Write temperature code for rising and falling threshold */
- for (i = 0; i < pdata->non_hw_trigger_levels; i++) {
- threshold_code = temp_to_code(data,
- pdata->trigger_levels[i]);
- rising_threshold &= ~(0xff << 8 * i);
- rising_threshold |= threshold_code << 8 * i;
- if (pdata->threshold_falling) {
- threshold_code = temp_to_code(data,
- pdata->trigger_levels[i] -
- pdata->threshold_falling);
- falling_threshold |= threshold_code << 8 * i;
- }
- }
+ if (falling)
+ temp -= pdata->threshold_falling;
+ else
+ threshold &= ~(0xff << 8 * i);
- writel(rising_threshold,
- data->base + reg->threshold_th0);
- writel(falling_threshold,
- data->base + reg->threshold_th1);
-
- exynos_tmu_clear_irqs(data);
-
- /* if last threshold limit is also present */
- i = pdata->max_trigger_level - 1;
- if (pdata->trigger_levels[i] &&
- (pdata->trigger_type[i] == HW_TRIP)) {
- threshold_code = temp_to_code(data,
- pdata->trigger_levels[i]);
- if (i == EXYNOS_MAX_TRIGGER_PER_REG - 1) {
- /* 1-4 level to be assigned in th0 reg */
- rising_threshold &= ~(0xff << 8 * i);
- rising_threshold |= threshold_code << 8 * i;
- writel(rising_threshold,
- data->base + reg->threshold_th0);
- } else if (i == EXYNOS_MAX_TRIGGER_PER_REG) {
- /* 5th level to be assigned in th2 reg */
- rising_threshold =
- threshold_code << reg->threshold_th3_l0_shift;
- writel(rising_threshold,
- data->base + reg->threshold_th2);
- }
- con = readl(data->base + reg->tmu_ctrl);
- con |= (1 << reg->therm_trip_en_shift);
- writel(con, data->base + reg->tmu_ctrl);
- }
+ threshold |= temp_to_code(data, temp) << 8 * i;
}
- /*Clear the PMIN in the common TMU register*/
- if (reg->tmu_pmin && !data->id)
- writel(0, data->base_second + reg->tmu_pmin);
-out:
+
+ return threshold;
+}
+
+static int exynos_tmu_initialize(struct platform_device *pdev)
+{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ int ret;
+
+ mutex_lock(&data->lock);
+ clk_enable(data->clk);
+ if (!IS_ERR(data->clk_sec))
+ clk_enable(data->clk_sec);
+ ret = data->tmu_initialize(pdev);
clk_disable(data->clk);
mutex_unlock(&data->lock);
if (!IS_ERR(data->clk_sec))
return ret;
}
-static void exynos_tmu_control(struct platform_device *pdev, bool on)
+static u32 get_con_reg(struct exynos_tmu_data *data, u32 con)
{
- struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct exynos_tmu_platform_data *pdata = data->pdata;
- const struct exynos_tmu_registers *reg = pdata->registers;
- unsigned int con, interrupt_en;
- mutex_lock(&data->lock);
- clk_enable(data->clk);
-
- con = readl(data->base + reg->tmu_ctrl);
-
- if (pdata->test_mux)
- con |= (pdata->test_mux << reg->test_mux_addr_shift);
+ if (data->soc == SOC_ARCH_EXYNOS4412 ||
+ data->soc == SOC_ARCH_EXYNOS3250)
+ con |= (EXYNOS4412_MUX_ADDR_VALUE << EXYNOS4412_MUX_ADDR_SHIFT);
con &= ~(EXYNOS_TMU_REF_VOLTAGE_MASK << EXYNOS_TMU_REF_VOLTAGE_SHIFT);
con |= pdata->reference_voltage << EXYNOS_TMU_REF_VOLTAGE_SHIFT;
con |= (pdata->gain << EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT);
if (pdata->noise_cancel_mode) {
- con &= ~(reg->therm_trip_mode_mask <<
- reg->therm_trip_mode_shift);
- con |= (pdata->noise_cancel_mode << reg->therm_trip_mode_shift);
+ con &= ~(EXYNOS_TMU_TRIP_MODE_MASK << EXYNOS_TMU_TRIP_MODE_SHIFT);
+ con |= (pdata->noise_cancel_mode << EXYNOS_TMU_TRIP_MODE_SHIFT);
}
- if (on) {
- con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
- interrupt_en =
- pdata->trigger_enable[3] << reg->inten_rise3_shift |
- pdata->trigger_enable[2] << reg->inten_rise2_shift |
- pdata->trigger_enable[1] << reg->inten_rise1_shift |
- pdata->trigger_enable[0] << reg->inten_rise0_shift;
- if (TMU_SUPPORTS(pdata, FALLING_TRIP))
- interrupt_en |=
- interrupt_en << reg->inten_fall0_shift;
- } else {
- con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
- interrupt_en = 0; /* Disable all interrupts */
- }
- writel(interrupt_en, data->base + reg->tmu_inten);
- writel(con, data->base + reg->tmu_ctrl);
+ return con;
+}
+
+static void exynos_tmu_control(struct platform_device *pdev, bool on)
+{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ mutex_lock(&data->lock);
+ clk_enable(data->clk);
+ data->tmu_control(pdev, on);
clk_disable(data->clk);
mutex_unlock(&data->lock);
}
-static int exynos_tmu_read(struct exynos_tmu_data *data)
+static int exynos4210_tmu_initialize(struct platform_device *pdev)
{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct exynos_tmu_platform_data *pdata = data->pdata;
- const struct exynos_tmu_registers *reg = pdata->registers;
- u8 temp_code;
- int temp;
+ unsigned int status;
+ int ret = 0, threshold_code, i;
- mutex_lock(&data->lock);
- clk_enable(data->clk);
+ status = readb(data->base + EXYNOS_TMU_REG_STATUS);
+ if (!status) {
+ ret = -EBUSY;
+ goto out;
+ }
- temp_code = readb(data->base + reg->tmu_cur_temp);
+ sanitize_temp_error(data, readl(data->base + EXYNOS_TMU_REG_TRIMINFO));
- if (data->soc == SOC_ARCH_EXYNOS4210)
- /* temp_code should range between 75 and 175 */
- if (temp_code < 75 || temp_code > 175) {
- temp = -ENODATA;
- goto out;
+ /* Write temperature code for threshold */
+ threshold_code = temp_to_code(data, pdata->threshold);
+ writeb(threshold_code, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP);
+
+ for (i = 0; i < pdata->non_hw_trigger_levels; i++)
+ writeb(pdata->trigger_levels[i], data->base +
+ EXYNOS4210_TMU_REG_TRIG_LEVEL0 + i * 4);
+
+ data->tmu_clear_irqs(data);
+out:
+ return ret;
+}
+
+static int exynos4412_tmu_initialize(struct platform_device *pdev)
+{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ struct exynos_tmu_platform_data *pdata = data->pdata;
+ unsigned int status, trim_info, con, ctrl, rising_threshold;
+ int ret = 0, threshold_code, i;
+
+ status = readb(data->base + EXYNOS_TMU_REG_STATUS);
+ if (!status) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ if (data->soc == SOC_ARCH_EXYNOS3250 ||
+ data->soc == SOC_ARCH_EXYNOS4412 ||
+ data->soc == SOC_ARCH_EXYNOS5250) {
+ if (data->soc == SOC_ARCH_EXYNOS3250) {
+ ctrl = readl(data->base + EXYNOS_TMU_TRIMINFO_CON1);
+ ctrl |= EXYNOS_TRIMINFO_RELOAD_ENABLE;
+ writel(ctrl, data->base + EXYNOS_TMU_TRIMINFO_CON1);
}
+ ctrl = readl(data->base + EXYNOS_TMU_TRIMINFO_CON2);
+ ctrl |= EXYNOS_TRIMINFO_RELOAD_ENABLE;
+ writel(ctrl, data->base + EXYNOS_TMU_TRIMINFO_CON2);
+ }
- temp = code_to_temp(data, temp_code);
+ /* On exynos5420 the triminfo register is in the shared space */
+ if (data->soc == SOC_ARCH_EXYNOS5420_TRIMINFO)
+ trim_info = readl(data->base_second + EXYNOS_TMU_REG_TRIMINFO);
+ else
+ trim_info = readl(data->base + EXYNOS_TMU_REG_TRIMINFO);
+
+ sanitize_temp_error(data, trim_info);
+
+ /* Write temperature code for rising and falling threshold */
+ rising_threshold = readl(data->base + EXYNOS_THD_TEMP_RISE);
+ rising_threshold = get_th_reg(data, rising_threshold, false);
+ writel(rising_threshold, data->base + EXYNOS_THD_TEMP_RISE);
+ writel(get_th_reg(data, 0, true), data->base + EXYNOS_THD_TEMP_FALL);
+
+ data->tmu_clear_irqs(data);
+
+ /* if last threshold limit is also present */
+ i = pdata->max_trigger_level - 1;
+ if (pdata->trigger_levels[i] && pdata->trigger_type[i] == HW_TRIP) {
+ threshold_code = temp_to_code(data, pdata->trigger_levels[i]);
+ /* 1-4 level to be assigned in th0 reg */
+ rising_threshold &= ~(0xff << 8 * i);
+ rising_threshold |= threshold_code << 8 * i;
+ writel(rising_threshold, data->base + EXYNOS_THD_TEMP_RISE);
+ con = readl(data->base + EXYNOS_TMU_REG_CONTROL);
+ con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT);
+ writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
+ }
out:
- clk_disable(data->clk);
- mutex_unlock(&data->lock);
+ return ret;
+}
- return temp;
+static int exynos5440_tmu_initialize(struct platform_device *pdev)
+{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ struct exynos_tmu_platform_data *pdata = data->pdata;
+ unsigned int trim_info = 0, con, rising_threshold;
+ int ret = 0, threshold_code, i;
+
+ /*
+ * For exynos5440 soc triminfo value is swapped between TMU0 and
+ * TMU2, so the below logic is needed.
+ */
+ switch (data->id) {
+ case 0:
+ trim_info = readl(data->base + EXYNOS5440_EFUSE_SWAP_OFFSET +
+ EXYNOS5440_TMU_S0_7_TRIM);
+ break;
+ case 1:
+ trim_info = readl(data->base + EXYNOS5440_TMU_S0_7_TRIM);
+ break;
+ case 2:
+ trim_info = readl(data->base - EXYNOS5440_EFUSE_SWAP_OFFSET +
+ EXYNOS5440_TMU_S0_7_TRIM);
+ }
+ sanitize_temp_error(data, trim_info);
+
+ /* Write temperature code for rising and falling threshold */
+ rising_threshold = readl(data->base + EXYNOS5440_TMU_S0_7_TH0);
+ rising_threshold = get_th_reg(data, rising_threshold, false);
+ writel(rising_threshold, data->base + EXYNOS5440_TMU_S0_7_TH0);
+ writel(0, data->base + EXYNOS5440_TMU_S0_7_TH1);
+
+ data->tmu_clear_irqs(data);
+
+ /* if last threshold limit is also present */
+ i = pdata->max_trigger_level - 1;
+ if (pdata->trigger_levels[i] && pdata->trigger_type[i] == HW_TRIP) {
+ threshold_code = temp_to_code(data, pdata->trigger_levels[i]);
+ /* 5th level to be assigned in th2 reg */
+ rising_threshold =
+ threshold_code << EXYNOS5440_TMU_TH_RISE4_SHIFT;
+ writel(rising_threshold, data->base + EXYNOS5440_TMU_S0_7_TH2);
+ con = readl(data->base + EXYNOS5440_TMU_S0_7_CTRL);
+ con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT);
+ writel(con, data->base + EXYNOS5440_TMU_S0_7_CTRL);
+ }
+ /* Clear the PMIN in the common TMU register */
+ if (!data->id)
+ writel(0, data->base_second + EXYNOS5440_TMU_PMIN);
+ return ret;
}
-#ifdef CONFIG_THERMAL_EMULATION
-static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
+static void exynos4210_tmu_control(struct platform_device *pdev, bool on)
{
- struct exynos_tmu_data *data = drv_data;
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
struct exynos_tmu_platform_data *pdata = data->pdata;
- const struct exynos_tmu_registers *reg = pdata->registers;
- unsigned int val;
- int ret = -EINVAL;
+ unsigned int con, interrupt_en;
- if (!TMU_SUPPORTS(pdata, EMULATION))
- goto out;
+ con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL));
- if (temp && temp < MCELSIUS)
- goto out;
+ if (on) {
+ con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
+ interrupt_en =
+ pdata->trigger_enable[3] << EXYNOS_TMU_INTEN_RISE3_SHIFT |
+ pdata->trigger_enable[2] << EXYNOS_TMU_INTEN_RISE2_SHIFT |
+ pdata->trigger_enable[1] << EXYNOS_TMU_INTEN_RISE1_SHIFT |
+ pdata->trigger_enable[0] << EXYNOS_TMU_INTEN_RISE0_SHIFT;
+ if (data->soc != SOC_ARCH_EXYNOS4210)
+ interrupt_en |=
+ interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT;
+ } else {
+ con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
+ interrupt_en = 0; /* Disable all interrupts */
+ }
+ writel(interrupt_en, data->base + EXYNOS_TMU_REG_INTEN);
+ writel(con, data->base + EXYNOS_TMU_REG_CONTROL);
+}
+
+static void exynos5440_tmu_control(struct platform_device *pdev, bool on)
+{
+ struct exynos_tmu_data *data = platform_get_drvdata(pdev);
+ struct exynos_tmu_platform_data *pdata = data->pdata;
+ unsigned int con, interrupt_en;
+
+ con = get_con_reg(data, readl(data->base + EXYNOS5440_TMU_S0_7_CTRL));
+
+ if (on) {
+ con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT);
+ interrupt_en =
+ pdata->trigger_enable[3] << EXYNOS5440_TMU_INTEN_RISE3_SHIFT |
+ pdata->trigger_enable[2] << EXYNOS5440_TMU_INTEN_RISE2_SHIFT |
+ pdata->trigger_enable[1] << EXYNOS5440_TMU_INTEN_RISE1_SHIFT |
+ pdata->trigger_enable[0] << EXYNOS5440_TMU_INTEN_RISE0_SHIFT;
+ interrupt_en |= interrupt_en << EXYNOS5440_TMU_INTEN_FALL0_SHIFT;
+ } else {
+ con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT);
+ interrupt_en = 0; /* Disable all interrupts */
+ }
+ writel(interrupt_en, data->base + EXYNOS5440_TMU_S0_7_IRQEN);
+ writel(con, data->base + EXYNOS5440_TMU_S0_7_CTRL);
+}
+
+static int exynos_tmu_read(struct exynos_tmu_data *data)
+{
+ int ret;
mutex_lock(&data->lock);
clk_enable(data->clk);
+ ret = data->tmu_read(data);
+ if (ret >= 0)
+ ret = code_to_temp(data, ret);
+ clk_disable(data->clk);
+ mutex_unlock(&data->lock);
- val = readl(data->base + reg->emul_con);
+ return ret;
+}
+#ifdef CONFIG_THERMAL_EMULATION
+static u32 get_emul_con_reg(struct exynos_tmu_data *data, unsigned int val,
+ unsigned long temp)
+{
if (temp) {
temp /= MCELSIUS;
- if (TMU_SUPPORTS(pdata, EMUL_TIME)) {
- val &= ~(EXYNOS_EMUL_TIME_MASK << reg->emul_time_shift);
- val |= (EXYNOS_EMUL_TIME << reg->emul_time_shift);
+ if (data->soc != SOC_ARCH_EXYNOS5440) {
+ val &= ~(EXYNOS_EMUL_TIME_MASK << EXYNOS_EMUL_TIME_SHIFT);
+ val |= (EXYNOS_EMUL_TIME << EXYNOS_EMUL_TIME_SHIFT);
}
- val &= ~(EXYNOS_EMUL_DATA_MASK << reg->emul_temp_shift);
- val |= (temp_to_code(data, temp) << reg->emul_temp_shift) |
+ val &= ~(EXYNOS_EMUL_DATA_MASK << EXYNOS_EMUL_DATA_SHIFT);
+ val |= (temp_to_code(data, temp) << EXYNOS_EMUL_DATA_SHIFT) |
EXYNOS_EMUL_ENABLE;
} else {
val &= ~EXYNOS_EMUL_ENABLE;
}
- writel(val, data->base + reg->emul_con);
+ return val;
+}
+
+static void exynos4412_tmu_set_emulation(struct exynos_tmu_data *data,
+ unsigned long temp)
+{
+ unsigned int val;
+ u32 emul_con;
+
+ if (data->soc == SOC_ARCH_EXYNOS5260)
+ emul_con = EXYNOS5260_EMUL_CON;
+ else
+ emul_con = EXYNOS_EMUL_CON;
+
+ val = readl(data->base + emul_con);
+ val = get_emul_con_reg(data, val, temp);
+ writel(val, data->base + emul_con);
+}
+
+static void exynos5440_tmu_set_emulation(struct exynos_tmu_data *data,
+ unsigned long temp)
+{
+ unsigned int val;
+
+ val = readl(data->base + EXYNOS5440_TMU_S0_7_DEBUG);
+ val = get_emul_con_reg(data, val, temp);
+ writel(val, data->base + EXYNOS5440_TMU_S0_7_DEBUG);
+}
+
+static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
+{
+ struct exynos_tmu_data *data = drv_data;
+ int ret = -EINVAL;
+
+ if (data->soc == SOC_ARCH_EXYNOS4210)
+ goto out;
+ if (temp && temp < MCELSIUS)
+ goto out;
+
+ mutex_lock(&data->lock);
+ clk_enable(data->clk);
+ data->tmu_set_emulation(data, temp);
clk_disable(data->clk);
mutex_unlock(&data->lock);
return 0;
return ret;
}
#else
+#define exynos4412_tmu_set_emulation NULL
+#define exynos5440_tmu_set_emulation NULL
static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp)
{ return -EINVAL; }
#endif/*CONFIG_THERMAL_EMULATION*/
+static int exynos4210_tmu_read(struct exynos_tmu_data *data)
+{
+ int ret = readb(data->base + EXYNOS_TMU_REG_CURRENT_TEMP);
+
+ /* "temp_code" should range between 75 and 175 */
+ return (ret < 75 || ret > 175) ? -ENODATA : ret;
+}
+
+static int exynos4412_tmu_read(struct exynos_tmu_data *data)
+{
+ return readb(data->base + EXYNOS_TMU_REG_CURRENT_TEMP);
+}
+
+static int exynos5440_tmu_read(struct exynos_tmu_data *data)
+{
+ return readb(data->base + EXYNOS5440_TMU_S0_7_TEMP);
+}
+
static void exynos_tmu_work(struct work_struct *work)
{
struct exynos_tmu_data *data = container_of(work,
struct exynos_tmu_data, irq_work);
- struct exynos_tmu_platform_data *pdata = data->pdata;
- const struct exynos_tmu_registers *reg = pdata->registers;
unsigned int val_type;
if (!IS_ERR(data->clk_sec))
clk_enable(data->clk_sec);
/* Find which sensor generated this interrupt */
- if (reg->tmu_irqstatus) {
- val_type = readl(data->base_second + reg->tmu_irqstatus);
+ if (data->soc == SOC_ARCH_EXYNOS5440) {
+ val_type = readl(data->base_second + EXYNOS5440_TMU_IRQ_STATUS);
if (!((val_type >> data->id) & 0x1))
goto out;
}
clk_enable(data->clk);
/* TODO: take action based on particular interrupt */
- exynos_tmu_clear_irqs(data);
+ data->tmu_clear_irqs(data);
clk_disable(data->clk);
mutex_unlock(&data->lock);
enable_irq(data->irq);
}
+static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data)
+{
+ unsigned int val_irq;
+ u32 tmu_intstat, tmu_intclear;
+
+ if (data->soc == SOC_ARCH_EXYNOS5260) {
+ tmu_intstat = EXYNOS5260_TMU_REG_INTSTAT;
+ tmu_intclear = EXYNOS5260_TMU_REG_INTCLEAR;
+ } else {
+ tmu_intstat = EXYNOS_TMU_REG_INTSTAT;
+ tmu_intclear = EXYNOS_TMU_REG_INTCLEAR;
+ }
+
+ val_irq = readl(data->base + tmu_intstat);
+ /*
+ * Clear the interrupts. Please note that the documentation for
+ * Exynos3250, Exynos4412, Exynos5250 and Exynos5260 incorrectly
+ * states that INTCLEAR register has a different placing of bits
+ * responsible for FALL IRQs than INTSTAT register. Exynos5420
+ * and Exynos5440 documentation is correct (Exynos4210 doesn't
+ * support FALL IRQs at all).
+ */
+ writel(val_irq, data->base + tmu_intclear);
+}
+
+static void exynos5440_tmu_clear_irqs(struct exynos_tmu_data *data)
+{
+ unsigned int val_irq;
+
+ val_irq = readl(data->base + EXYNOS5440_TMU_S0_7_IRQ);
+ /* clear the interrupts */
+ writel(val_irq, data->base + EXYNOS5440_TMU_S0_7_IRQ);
+}
+
static irqreturn_t exynos_tmu_irq(int irq, void *id)
{
struct exynos_tmu_data *data = id;
static const struct of_device_id exynos_tmu_match[] = {
{
.compatible = "samsung,exynos3250-tmu",
- .data = (void *)EXYNOS3250_TMU_DRV_DATA,
+ .data = &exynos3250_default_tmu_data,
},
{
.compatible = "samsung,exynos4210-tmu",
- .data = (void *)EXYNOS4210_TMU_DRV_DATA,
+ .data = &exynos4210_default_tmu_data,
},
{
.compatible = "samsung,exynos4412-tmu",
- .data = (void *)EXYNOS4412_TMU_DRV_DATA,
+ .data = &exynos4412_default_tmu_data,
},
{
.compatible = "samsung,exynos5250-tmu",
- .data = (void *)EXYNOS5250_TMU_DRV_DATA,
+ .data = &exynos5250_default_tmu_data,
},
{
.compatible = "samsung,exynos5260-tmu",
- .data = (void *)EXYNOS5260_TMU_DRV_DATA,
+ .data = &exynos5260_default_tmu_data,
},
{
.compatible = "samsung,exynos5420-tmu",
- .data = (void *)EXYNOS5420_TMU_DRV_DATA,
+ .data = &exynos5420_default_tmu_data,
},
{
.compatible = "samsung,exynos5420-tmu-ext-triminfo",
- .data = (void *)EXYNOS5420_TMU_DRV_DATA,
+ .data = &exynos5420_default_tmu_data,
},
{
.compatible = "samsung,exynos5440-tmu",
- .data = (void *)EXYNOS5440_TMU_DRV_DATA,
+ .data = &exynos5440_default_tmu_data,
},
{},
};
dev_err(&pdev->dev, "No platform init data supplied.\n");
return -ENODEV;
}
+
data->pdata = pdata;
+ data->soc = pdata->type;
+
+ switch (data->soc) {
+ case SOC_ARCH_EXYNOS4210:
+ data->tmu_initialize = exynos4210_tmu_initialize;
+ data->tmu_control = exynos4210_tmu_control;
+ data->tmu_read = exynos4210_tmu_read;
+ data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
+ break;
+ case SOC_ARCH_EXYNOS3250:
+ case SOC_ARCH_EXYNOS4412:
+ case SOC_ARCH_EXYNOS5250:
+ case SOC_ARCH_EXYNOS5260:
+ case SOC_ARCH_EXYNOS5420:
+ case SOC_ARCH_EXYNOS5420_TRIMINFO:
+ data->tmu_initialize = exynos4412_tmu_initialize;
+ data->tmu_control = exynos4210_tmu_control;
+ data->tmu_read = exynos4412_tmu_read;
+ data->tmu_set_emulation = exynos4412_tmu_set_emulation;
+ data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
+ break;
+ case SOC_ARCH_EXYNOS5440:
+ data->tmu_initialize = exynos5440_tmu_initialize;
+ data->tmu_control = exynos5440_tmu_control;
+ data->tmu_read = exynos5440_tmu_read;
+ data->tmu_set_emulation = exynos5440_tmu_set_emulation;
+ data->tmu_clear_irqs = exynos5440_tmu_clear_irqs;
+ break;
+ default:
+ dev_err(&pdev->dev, "Platform not supported\n");
+ return -EINVAL;
+ }
+
/*
* Check if the TMU shares some registers and then try to map the
* memory of common registers.
*/
- if (!TMU_SUPPORTS(pdata, ADDRESS_MULTIPLE))
+ if (data->soc != SOC_ARCH_EXYNOS5420_TRIMINFO &&
+ data->soc != SOC_ARCH_EXYNOS5440)
return 0;
if (of_address_to_resource(pdev->dev.of_node, 1, &res)) {
goto err_clk_sec;
}
- if (pdata->type == SOC_ARCH_EXYNOS3250 ||
- pdata->type == SOC_ARCH_EXYNOS4210 ||
- pdata->type == SOC_ARCH_EXYNOS4412 ||
- pdata->type == SOC_ARCH_EXYNOS5250 ||
- pdata->type == SOC_ARCH_EXYNOS5260 ||
- pdata->type == SOC_ARCH_EXYNOS5420_TRIMINFO ||
- pdata->type == SOC_ARCH_EXYNOS5440)
- data->soc = pdata->type;
- else {
- ret = -EINVAL;
- dev_err(&pdev->dev, "Platform not supported\n");
- goto err_clk;
- }
-
ret = exynos_tmu_initialize(pdev);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize TMU\n");
static struct platform_driver exynos_tmu_driver = {
.driver = {
.name = "exynos-tmu",
- .owner = THIS_MODULE,
.pm = EXYNOS_TMU_PM,
.of_match_table = exynos_tmu_match,
},
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