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Subject[PATCH v3 2/3] soundwire: qcom: add support to block packing mode
Date
This patch adds support to block pack mode, which is required
on Qcom soundwire controllers v1.5.x on few ports!

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/soundwire/qcom.c | 22 +++++++++++++++++++---
1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 0036d3248fb4..5a61d82310fd 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -54,6 +54,7 @@
#define SWRM_MCP_SLV_STATUS 0x1090
#define SWRM_MCP_SLV_STATUS_MASK GENMASK(1, 0)
#define SWRM_DP_PORT_CTRL_BANK(n, m) (0x1124 + 0x100 * (n - 1) + 0x40 * m)
+#define SWRM_DP_BLOCK_CTRL3_BANK(n, m) (0x1138 + 0x100 * (n - 1) + 0x40 * m)
#define SWRM_DP_PORT_CTRL_EN_CHAN_SHFT 0x18
#define SWRM_DP_PORT_CTRL_OFFSET2_SHFT 0x10
#define SWRM_DP_PORT_CTRL_OFFSET1_SHFT 0x08
@@ -82,6 +83,7 @@ struct qcom_swrm_port_config {
u8 si;
u8 off1;
u8 off2;
+ u8 bp_mode;
};

struct qcom_swrm_ctrl {
@@ -392,14 +394,22 @@ static int qcom_swrm_transport_params(struct sdw_bus *bus,
{
struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
u32 value;
+ int reg = SWRM_DP_PORT_CTRL_BANK((params->port_num), bank);
+ int ret;

value = params->offset1 << SWRM_DP_PORT_CTRL_OFFSET1_SHFT;
value |= params->offset2 << SWRM_DP_PORT_CTRL_OFFSET2_SHFT;
value |= params->sample_interval - 1;

- return ctrl->reg_write(ctrl,
- SWRM_DP_PORT_CTRL_BANK((params->port_num), bank),
- value);
+ ret = ctrl->reg_write(ctrl, reg, value);
+
+ if (!ret && params->blk_pkg_mode) {
+ reg = SWRM_DP_BLOCK_CTRL3_BANK(params->port_num, bank);
+
+ ret = ctrl->reg_write(ctrl, reg, 1);
+ }
+
+ return ret;
}

static int qcom_swrm_port_enable(struct sdw_bus *bus,
@@ -447,6 +457,7 @@ static int qcom_swrm_compute_params(struct sdw_bus *bus)
p_rt->transport_params.sample_interval = pcfg->si + 1;
p_rt->transport_params.offset1 = pcfg->off1;
p_rt->transport_params.offset2 = pcfg->off2;
+ p_rt->transport_params.blk_pkg_mode = pcfg->bp_mode;
}

list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
@@ -457,6 +468,7 @@ static int qcom_swrm_compute_params(struct sdw_bus *bus)
pcfg->si + 1;
p_rt->transport_params.offset1 = pcfg->off1;
p_rt->transport_params.offset2 = pcfg->off2;
+ p_rt->transport_params.blk_pkg_mode = pcfg->bp_mode;
i++;
}
}
@@ -703,6 +715,7 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
u8 off1[QCOM_SDW_MAX_PORTS];
u8 off2[QCOM_SDW_MAX_PORTS];
u8 si[QCOM_SDW_MAX_PORTS];
+ u8 bp_mode[QCOM_SDW_MAX_PORTS] = { 0, };
int i, ret, nports, val;

ctrl->reg_read(ctrl, SWRM_COMP_PARAMS, &val);
@@ -745,10 +758,13 @@ static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
if (ret)
return ret;

+ ret = of_property_read_u8_array(np, "qcom,ports-block-pack-mode",
+ bp_mode, nports);
for (i = 0; i < nports; i++) {
ctrl->pconfig[i].si = si[i];
ctrl->pconfig[i].off1 = off1[i];
ctrl->pconfig[i].off2 = off2[i];
+ ctrl->pconfig[i].bp_mode = bp_mode[i];
}

return 0;
--
2.21.0
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