diff options
| author | Jonathan Marek <jonathan@marek.ca> | 2020-09-05 19:39:04 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-09-07 16:17:13 +0200 |
| commit | 82f5c70c26511ba9521418a94811eb4b8d96f0bd (patch) | |
| tree | 128a0fb4e846248ef0d7aa5732b41f3115b44aa9 | |
| parent | soundwire: qcom: avoid dependency on CONFIG_SLIMBUS (diff) | |
| download | linux-82f5c70c26511ba9521418a94811eb4b8d96f0bd.tar.xz linux-82f5c70c26511ba9521418a94811eb4b8d96f0bd.zip | |
soundwire: qcom: add support for mmio soundwire master devices
Adds support for qcom soundwire devices with memory mapped IO registers.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200905173905.16541-4-jonathan@marek.ca
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/soundwire/qcom.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index 35517d1a7765..4e66239c4417 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -34,6 +34,7 @@ #define SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED BIT(10) #define SWRM_INTERRUPT_MASK_ADDR 0x204 #define SWRM_INTERRUPT_CLEAR 0x208 +#define SWRM_INTERRUPT_CPU_EN 0x210 #define SWRM_CMD_FIFO_WR_CMD 0x300 #define SWRM_CMD_FIFO_RD_CMD 0x304 #define SWRM_CMD_FIFO_CMD 0x308 @@ -87,6 +88,7 @@ struct qcom_swrm_ctrl { struct sdw_bus bus; struct device *dev; struct regmap *regmap; + void __iomem *mmio; struct completion *comp; struct work_struct slave_work; /* read/write lock */ @@ -151,6 +153,20 @@ static int qcom_swrm_ahb_reg_write(struct qcom_swrm_ctrl *ctrl, return SDW_CMD_OK; } +static int qcom_swrm_cpu_reg_read(struct qcom_swrm_ctrl *ctrl, int reg, + u32 *val) +{ + *val = readl(ctrl->mmio + reg); + return SDW_CMD_OK; +} + +static int qcom_swrm_cpu_reg_write(struct qcom_swrm_ctrl *ctrl, int reg, + int val) +{ + writel(val, ctrl->mmio + reg); + return SDW_CMD_OK; +} + static int qcom_swrm_cmd_fifo_wr_cmd(struct qcom_swrm_ctrl *ctrl, u8 cmd_data, u8 dev_addr, u16 reg_addr) { @@ -305,6 +321,12 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl) ctrl->reg_write(ctrl, SWRM_COMP_CFG_ADDR, SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK | SWRM_COMP_CFG_ENABLE_MSK); + + /* enable CPU IRQs */ + if (ctrl->mmio) { + ctrl->reg_write(ctrl, SWRM_INTERRUPT_CPU_EN, + SWRM_INTERRUPT_STATUS_RMSK); + } return 0; } @@ -756,8 +778,11 @@ static int qcom_swrm_probe(struct platform_device *pdev) if (!ctrl->regmap) return -EINVAL; } else { - /* Only WCD based SoundWire controller is supported */ - return -ENOTSUPP; + ctrl->reg_read = qcom_swrm_cpu_reg_read; + ctrl->reg_write = qcom_swrm_cpu_reg_write; + ctrl->mmio = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(ctrl->mmio)) + return PTR_ERR(ctrl->mmio); } ctrl->irq = of_irq_get(dev->of_node, 0); |