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ODROID-N2: media: rc: update meson-ir driver

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Change-Id: I435e618af7436d0485423f541f9df841716810b5
This commit is contained in:
Joy Cho
2019-02-15 15:47:39 +09:00
parent 3b7e1f914d
commit 1d60ca1075
1 changed files with 37 additions and 0 deletions
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37
drivers/media/rc/meson-ir.c
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@@ -21,6 +21,9 @@
#include <linux/spinlock.h>
#include <media/rc-core.h>
#if defined(CONFIG_ARCH_MESON64_ODROIDN2)
#include <linux/amlogic/iomap.h>
#endif
#define DRIVER_NAME "meson-ir"
@@ -59,8 +62,11 @@
#define REG1_IRQSEL_RISE (3 << 2)
#define REG1_RESET BIT(0)
#define REG1_POL BIT(1)
#define REG1_ENABLE BIT(15)
#define AO_RTI_PIN_MUX_REG 0x14 /* offset 0x5 */
#define STATUS_IR_DEC_IN BIT(8)
#define MESON_TRATE 10 /* us */
@@ -86,11 +92,19 @@ static void meson_ir_set_mask(struct meson_ir *ir, unsigned int reg,
static irqreturn_t meson_ir_irq(int irqno, void *dev_id)
{
struct meson_ir *ir = dev_id;
#if !defined(CONFIG_ARCH_MESON64_ODROIDN2)
u32 duration;
DEFINE_IR_RAW_EVENT(rawir);
#endif
spin_lock(&ir->lock);
#if defined(CONFIG_ARCH_MESON64_ODROIDN2)
ir_raw_event_store_edge(ir->rc,
(readl(ir->reg + IR_DEC_STATUS) & STATUS_IR_DEC_IN)
? IR_PULSE : IR_SPACE);
ir_raw_event_handle(ir->rc);
#else
duration = readl(ir->reg + IR_DEC_REG1);
duration = (duration & REG1_TIME_IV_MASK) >> REG1_TIME_IV_SHIFT;
rawir.duration = US_TO_NS(duration * MESON_TRATE);
@@ -99,6 +113,7 @@ static irqreturn_t meson_ir_irq(int irqno, void *dev_id)
ir_raw_event_store_with_filter(ir->rc, &rawir);
ir_raw_event_handle(ir->rc);
#endif
spin_unlock(&ir->lock);
@@ -113,6 +128,10 @@ static int meson_ir_probe(struct platform_device *pdev)
const char *map_name;
struct meson_ir *ir;
int ret;
#if defined(CONFIG_ARCH_MESON64_ODROIDN2)
unsigned int reg_val;
bool pulse_inverted = false;
#endif
ir = devm_kzalloc(dev, sizeof(struct meson_ir), GFP_KERNEL);
if (!ir)
@@ -149,6 +168,9 @@ static int meson_ir_probe(struct platform_device *pdev)
ir->rc->rx_resolution = US_TO_NS(MESON_TRATE);
ir->rc->timeout = MS_TO_NS(200);
ir->rc->driver_name = DRIVER_NAME;
#if defined(CONFIG_ARCH_MESON64_ODROIDN2)
pulse_inverted = of_property_read_bool(node, "pulse-inverted");
#endif
spin_lock_init(&ir->lock);
platform_set_drvdata(pdev, ir);
@@ -165,6 +187,16 @@ static int meson_ir_probe(struct platform_device *pdev)
goto out_unreg;
}
#if defined(CONFIG_ARCH_MESON64_ODROIDN2)
/* Set remote_input alternative function - GPIOAO.BIT5 */
reg_val = aml_read_aobus(AO_RTI_PIN_MUX_REG);
reg_val |= (0x1 << 20); /* [23:20], func1 IR_REMOTE_IN */
aml_write_aobus(AO_RTI_PIN_MUX_REG, reg_val);
reg_val = aml_read_aobus(AO_RTI_PIN_MUX_REG);
dev_info(dev, "AO_RTI_PIN_MUX : 0x%x\n", reg_val);
#endif
/* Reset the decoder */
meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, REG1_RESET);
meson_ir_set_mask(ir, IR_DEC_REG1, REG1_RESET, 0);
@@ -182,6 +214,11 @@ static int meson_ir_probe(struct platform_device *pdev)
/* IRQ on rising and falling edges */
meson_ir_set_mask(ir, IR_DEC_REG1, REG1_IRQSEL_MASK,
REG1_IRQSEL_RISE_FALL);
#if defined(CONFIG_ARCH_MESON64_ODROIDN2)
/* Set polarity Invert input polarity */
meson_ir_set_mask(ir, IR_DEC_REG1, REG1_POL,
pulse_inverted ? REG1_POL : 0);
#endif
/* Enable the decoder */
meson_ir_set_mask(ir, IR_DEC_REG1, REG1_ENABLE, REG1_ENABLE);