Re: [PATCH v2 6/7] soundwire: qcom: add support for v2.0.0 controller
From: Srinivas Kandagatla
Date: Thu Apr 13 2023 - 07:27:16 EST
On 03/04/2023 14:25, Krzysztof Kozlowski wrote:
Add support for Qualcomm Soundwire Controller with a bit different
register layout.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
drivers/soundwire/qcom.c | 65 +++++++++++++++++++++++++++++++++++-----
1 file changed, 57 insertions(+), 8 deletions(-)
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index b6666ffe37ae..f2e1135ef113 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -31,6 +31,7 @@
#define SWRM_VERSION_1_3_0 0x01030000
#define SWRM_VERSION_1_5_1 0x01050001
#define SWRM_VERSION_1_7_0 0x01070000
+#define SWRM_VERSION_2_0_0 0x02000000
#define SWRM_COMP_HW_VERSION 0x00
#define SWRM_COMP_CFG_ADDR 0x04
#define SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK BIT(1)
@@ -42,6 +43,7 @@
#define SWRM_COMP_PARAMS_DIN_PORTS_MASK GENMASK(9, 5)
#define SWRM_COMP_MASTER_ID 0x104
#define SWRM_V1_3_INTERRUPT_STATUS 0x200
+#define SWRM_V2_0_INTERRUPT_STATUS 0x5000
#define SWRM_INTERRUPT_STATUS_RMSK GENMASK(16, 0)
#define SWRM_INTERRUPT_STATUS_SLAVE_PEND_IRQ BIT(0)
#define SWRM_INTERRUPT_STATUS_NEW_SLAVE_ATTACHED BIT(1)
@@ -54,24 +56,32 @@
#define SWRM_INTERRUPT_STATUS_DOUT_PORT_COLLISION BIT(8)
#define SWRM_INTERRUPT_STATUS_READ_EN_RD_VALID_MISMATCH BIT(9)
#define SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED BIT(10)
+#define SWRM_INTERRUPT_STATUS_AUTO_ENUM_FAILED BIT(11)
+#define SWRM_INTERRUPT_STATUS_AUTO_ENUM_TABLE_IS_FULL BIT(12)
#define SWRM_INTERRUPT_STATUS_BUS_RESET_FINISHED_V2 BIT(13)
#define SWRM_INTERRUPT_STATUS_CLK_STOP_FINISHED_V2 BIT(14)
#define SWRM_INTERRUPT_STATUS_EXT_CLK_STOP_WAKEUP BIT(16)
#define SWRM_INTERRUPT_MAX 17
#define SWRM_V1_3_INTERRUPT_MASK_ADDR 0x204
#define SWRM_V1_3_INTERRUPT_CLEAR 0x208
+#define SWRM_V2_0_INTERRUPT_CLEAR 0x5008
#define SWRM_V1_3_INTERRUPT_CPU_EN 0x210
+#define SWRM_V2_0_INTERRUPT_CPU_EN 0x5004
#define SWRM_V1_3_CMD_FIFO_WR_CMD 0x300
+#define SWRM_V2_0_CMD_FIFO_WR_CMD 0x5020
#define SWRM_V1_3_CMD_FIFO_RD_CMD 0x304
+#define SWRM_V2_0_CMD_FIFO_RD_CMD 0x5024
#define SWRM_CMD_FIFO_CMD 0x308
#define SWRM_CMD_FIFO_FLUSH 0x1
#define SWRM_V1_3_CMD_FIFO_STATUS 0x30C
+#define SWRM_V2_0_CMD_FIFO_STATUS 0x5050
#define SWRM_RD_CMD_FIFO_CNT_MASK GENMASK(20, 16)
#define SWRM_WR_CMD_FIFO_CNT_MASK GENMASK(12, 8)
#define SWRM_CMD_FIFO_CFG_ADDR 0x314
#define SWRM_CONTINUE_EXEC_ON_CMD_IGNORE BIT(31)
#define SWRM_RD_WR_CMD_RETRIES 0x7
#define SWRM_V1_3_CMD_FIFO_RD_FIFO_ADDR 0x318
+#define SWRM_V2_0_CMD_FIFO_RD_FIFO_ADDR 0x5040
#define SWRM_RD_FIFO_CMD_ID_MASK GENMASK(11, 8)
#define SWRM_ENUMERATOR_CFG_ADDR 0x500
#define SWRM_ENUMERATOR_SLAVE_DEV_ID_1(m) (0x530 + 0x8 * (m))
@@ -98,6 +108,11 @@
#define SWRM_DP_SAMPLECTRL2_BANK(n, m) (0x113C + 0x100 * (n - 1) + 0x40 * m)
#define SWRM_DIN_DPn_PCM_PORT_CTRL(n) (0x1054 + 0x100 * (n - 1))
#define SWR_V1_3_MSTR_MAX_REG_ADDR 0x1740
+#define SWR_V2_0_MSTR_MAX_REG_ADDR 0x50ac
+
+#define SWRM_V2_0_CLK_CTRL 0x5060
+#define SWRM_V2_0_CLK_CTRL_CLK_START BIT(0)
+#define SWRM_V2_0_LINK_STATUS 0x5064
#define SWRM_DP_PORT_CTRL_EN_CHAN_SHFT 0x18
#define SWRM_DP_PORT_CTRL_OFFSET2_SHFT 0x10
@@ -243,6 +258,26 @@ static const struct qcom_swrm_data swrm_v1_6_data = {
.reg_layout = swrm_v1_3_reg_layout,
};
+static const unsigned int swrm_v2_0_reg_layout[] = {
+ [SWRM_REG_FRAME_GEN_ENABLED] = SWRM_V2_0_LINK_STATUS,
+ [SWRM_REG_INTERRUPT_STATUS] = SWRM_V2_0_INTERRUPT_STATUS,
+ [SWRM_REG_INTERRUPT_MASK_ADDR] = 0, /* Not present */
+ [SWRM_REG_INTERRUPT_CLEAR] = SWRM_V2_0_INTERRUPT_CLEAR,
+ [SWRM_REG_INTERRUPT_CPU_EN] = SWRM_V2_0_INTERRUPT_CPU_EN,
+ [SWRM_REG_CMD_FIFO_WR_CMD] = SWRM_V2_0_CMD_FIFO_WR_CMD,
+ [SWRM_REG_CMD_FIFO_RD_CMD] = SWRM_V2_0_CMD_FIFO_RD_CMD,
+ [SWRM_REG_CMD_FIFO_STATUS] = SWRM_V2_0_CMD_FIFO_STATUS,
+ [SWRM_REG_CMD_FIFO_RD_FIFO_ADDR] = SWRM_V2_0_CMD_FIFO_RD_FIFO_ADDR,
+};
+
+static const struct qcom_swrm_data swrm_v2_0_data = {
+ .default_rows = 50,
+ .default_cols = 16,
+ .sw_clk_gate_required = true,
+ .max_reg = SWR_V2_0_MSTR_MAX_REG_ADDR,
+ .reg_layout = swrm_v2_0_reg_layout,
+};
+
#define to_qcom_sdw(b) container_of(b, struct qcom_swrm_ctrl, bus)
static int qcom_swrm_ahb_reg_read(struct qcom_swrm_ctrl *ctrl, int reg,
@@ -748,18 +783,23 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
ctrl->intr_mask = SWRM_INTERRUPT_STATUS_RMSK;
/* Mask soundwire interrupts */
- ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_MASK_ADDR],
- SWRM_INTERRUPT_STATUS_RMSK);
+ if (ctrl->version < SWRM_VERSION_2_0_0)
+ ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_MASK_ADDR],
+ SWRM_INTERRUPT_STATUS_RMSK);
/* Configure No pings */
ctrl->reg_read(ctrl, SWRM_MCP_CFG_ADDR, &val);
u32p_replace_bits(&val, SWRM_DEF_CMD_NO_PINGS, SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK);
ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val);
- if (ctrl->version >= SWRM_VERSION_1_7_0) {
+ if (ctrl->version == SWRM_VERSION_1_7_0) {
ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU);
ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL,
SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU);
+ } else if (ctrl->version >= SWRM_VERSION_2_0_0) {
we can move this to a proper switch case rather than if else's
--srini
+ ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU);
+ ctrl->reg_write(ctrl, SWRM_V2_0_CLK_CTRL,
+ SWRM_V2_0_CLK_CTRL_CLK_START);
} else {
ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START);
}
@@ -1609,10 +1649,14 @@ static int __maybe_unused swrm_runtime_resume(struct device *dev)
} else {
reset_control_reset(ctrl->audio_cgcr);
- if (ctrl->version >= SWRM_VERSION_1_7_0) {
+ if (ctrl->version == SWRM_VERSION_1_7_0) {
ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU);
ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL,
SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU);
+ } else if (ctrl->version >= SWRM_VERSION_2_0_0) {
+ ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU);
+ ctrl->reg_write(ctrl, SWRM_V2_0_CLK_CTRL,
+ SWRM_V2_0_CLK_CTRL_CLK_START);
} else {
ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START);
}
@@ -1620,8 +1664,10 @@ static int __maybe_unused swrm_runtime_resume(struct device *dev)
SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET);
ctrl->intr_mask |= SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET;
- ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_MASK_ADDR],
- ctrl->intr_mask);
+ if (ctrl->version < SWRM_VERSION_2_0_0)
+ ctrl->reg_write(ctrl,
+ ctrl->reg_layout[SWRM_REG_INTERRUPT_MASK_ADDR],
+ ctrl->intr_mask);
ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_CPU_EN],
ctrl->intr_mask);
@@ -1645,8 +1691,10 @@ static int __maybe_unused swrm_runtime_suspend(struct device *dev)
if (!ctrl->clock_stop_not_supported) {
/* Mask bus clash interrupt */
ctrl->intr_mask &= ~SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET;
- ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_MASK_ADDR],
- ctrl->intr_mask);
+ if (ctrl->version < SWRM_VERSION_2_0_0)
+ ctrl->reg_write(ctrl,
+ ctrl->reg_layout[SWRM_REG_INTERRUPT_MASK_ADDR],
+ ctrl->intr_mask);
ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_CPU_EN],
ctrl->intr_mask);
/* Prepare slaves for clock stop */
@@ -1684,6 +1732,7 @@ static const struct of_device_id qcom_swrm_of_match[] = {
{ .compatible = "qcom,soundwire-v1.5.1", .data = &swrm_v1_5_data },
{ .compatible = "qcom,soundwire-v1.6.0", .data = &swrm_v1_6_data },
{ .compatible = "qcom,soundwire-v1.7.0", .data = &swrm_v1_5_data },
+ { .compatible = "qcom,soundwire-v2.0.0", .data = &swrm_v2_0_data },
{/* sentinel */},
};