diff options
Diffstat (limited to 'drivers/media/rc/zx-irdec.c')
| -rw-r--r-- | drivers/media/rc/zx-irdec.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/drivers/media/rc/zx-irdec.c b/drivers/media/rc/zx-irdec.c deleted file mode 100644 index 948ad90ae5d8..000000000000 --- a/drivers/media/rc/zx-irdec.c +++ /dev/null @@ -1,181 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2017 Sanechips Technology Co., Ltd. - * Copyright 2017 Linaro Ltd. - */ - -#include <linux/device.h> -#include <linux/err.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/of_platform.h> -#include <linux/platform_device.h> - -#include <media/rc-core.h> - -#define DRIVER_NAME "zx-irdec" - -#define ZX_IR_ENABLE 0x04 -#define ZX_IREN BIT(0) -#define ZX_IR_CTRL 0x08 -#define ZX_DEGL_MASK GENMASK(21, 20) -#define ZX_DEGL_VALUE(x) (((x) << 20) & ZX_DEGL_MASK) -#define ZX_WDBEGIN_MASK GENMASK(18, 8) -#define ZX_WDBEGIN_VALUE(x) (((x) << 8) & ZX_WDBEGIN_MASK) -#define ZX_IR_INTEN 0x10 -#define ZX_IR_INTSTCLR 0x14 -#define ZX_IR_CODE 0x30 -#define ZX_IR_CNUM 0x34 -#define ZX_NECRPT BIT(16) - -struct zx_irdec { - void __iomem *base; - struct rc_dev *rcd; -}; - -static void zx_irdec_set_mask(struct zx_irdec *irdec, unsigned int reg, - u32 mask, u32 value) -{ - u32 data; - - data = readl(irdec->base + reg); - data &= ~mask; - data |= value & mask; - writel(data, irdec->base + reg); -} - -static irqreturn_t zx_irdec_irq(int irq, void *dev_id) -{ - struct zx_irdec *irdec = dev_id; - u8 address, not_address; - u8 command, not_command; - u32 rawcode, scancode; - enum rc_proto rc_proto; - - /* Clear interrupt */ - writel(1, irdec->base + ZX_IR_INTSTCLR); - - /* Check repeat frame */ - if (readl(irdec->base + ZX_IR_CNUM) & ZX_NECRPT) { - rc_repeat(irdec->rcd); - goto done; - } - - rawcode = readl(irdec->base + ZX_IR_CODE); - not_command = (rawcode >> 24) & 0xff; - command = (rawcode >> 16) & 0xff; - not_address = (rawcode >> 8) & 0xff; - address = rawcode & 0xff; - - scancode = ir_nec_bytes_to_scancode(address, not_address, - command, not_command, - &rc_proto); - rc_keydown(irdec->rcd, rc_proto, scancode, 0); - -done: - return IRQ_HANDLED; -} - -static int zx_irdec_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct zx_irdec *irdec; - struct resource *res; - struct rc_dev *rcd; - int irq; - int ret; - - irdec = devm_kzalloc(dev, sizeof(*irdec), GFP_KERNEL); - if (!irdec) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - irdec->base = devm_ioremap_resource(dev, res); - if (IS_ERR(irdec->base)) - return PTR_ERR(irdec->base); - - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return irq; - - rcd = devm_rc_allocate_device(dev, RC_DRIVER_SCANCODE); - if (!rcd) { - dev_err(dev, "failed to allocate rc device\n"); - return -ENOMEM; - } - - irdec->rcd = rcd; - - rcd->priv = irdec; - rcd->input_phys = DRIVER_NAME "/input0"; - rcd->input_id.bustype = BUS_HOST; - rcd->map_name = RC_MAP_ZX_IRDEC; - rcd->allowed_protocols = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX | - RC_PROTO_BIT_NEC32; - rcd->driver_name = DRIVER_NAME; - rcd->device_name = DRIVER_NAME; - - platform_set_drvdata(pdev, irdec); - - ret = devm_rc_register_device(dev, rcd); - if (ret) { - dev_err(dev, "failed to register rc device\n"); - return ret; - } - - ret = devm_request_irq(dev, irq, zx_irdec_irq, 0, NULL, irdec); - if (ret) { - dev_err(dev, "failed to request irq\n"); - return ret; - } - - /* - * Initialize deglitch level and watchdog counter beginner as - * recommended by vendor BSP code. - */ - zx_irdec_set_mask(irdec, ZX_IR_CTRL, ZX_DEGL_MASK, ZX_DEGL_VALUE(0)); - zx_irdec_set_mask(irdec, ZX_IR_CTRL, ZX_WDBEGIN_MASK, - ZX_WDBEGIN_VALUE(0x21c)); - - /* Enable interrupt */ - writel(1, irdec->base + ZX_IR_INTEN); - - /* Enable the decoder */ - zx_irdec_set_mask(irdec, ZX_IR_ENABLE, ZX_IREN, ZX_IREN); - - return 0; -} - -static int zx_irdec_remove(struct platform_device *pdev) -{ - struct zx_irdec *irdec = platform_get_drvdata(pdev); - - /* Disable the decoder */ - zx_irdec_set_mask(irdec, ZX_IR_ENABLE, ZX_IREN, 0); - - /* Disable interrupt */ - writel(0, irdec->base + ZX_IR_INTEN); - - return 0; -} - -static const struct of_device_id zx_irdec_match[] = { - { .compatible = "zte,zx296718-irdec" }, - { }, -}; -MODULE_DEVICE_TABLE(of, zx_irdec_match); - -static struct platform_driver zx_irdec_driver = { - .probe = zx_irdec_probe, - .remove = zx_irdec_remove, - .driver = { - .name = DRIVER_NAME, - .of_match_table = zx_irdec_match, - }, -}; -module_platform_driver(zx_irdec_driver); - -MODULE_DESCRIPTION("ZTE ZX IR remote control driver"); -MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>"); -MODULE_LICENSE("GPL v2"); |