diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h index ff03b97f1d8b4e..fc990171b3f754 100644 --- a/drivers/soundwire/bus.h +++ b/drivers/soundwire/bus.h @@ -151,6 +151,7 @@ struct sdw_transport_data { int hstop; int block_offset; int sub_block_offset; + unsigned int lane; }; struct sdw_dpn_prop *sdw_get_slave_dpn_prop(struct sdw_slave *slave, diff --git a/drivers/soundwire/generic_bandwidth_allocation.c b/drivers/soundwire/generic_bandwidth_allocation.c index 43f96247545f66..4797fa9b41ab83 100644 --- a/drivers/soundwire/generic_bandwidth_allocation.c +++ b/drivers/soundwire/generic_bandwidth_allocation.c @@ -18,6 +18,7 @@ struct sdw_group_params { unsigned int rate; + unsigned int lane; int full_bw; int payload_bw; int hwidth; @@ -27,6 +28,7 @@ struct sdw_group { unsigned int count; unsigned int max_size; unsigned int *rates; + unsigned int *lanes; }; void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt, @@ -48,6 +50,9 @@ void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt, slave_total_ch = 0; list_for_each_entry(p_rt, &s_rt->port_list, port_node) { + if (p_rt->lane != t_data->lane) + continue; + ch = hweight32(p_rt->ch_mask); dev_dbg(&s_rt->slave->dev, "%s p_rt->lane %d\n", __func__, p_rt->lane); @@ -106,6 +111,8 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt, t_data.hstart = hstart; list_for_each_entry(p_rt, &m_rt->port_list, port_node) { + if (p_rt->lane != params->lane) + continue; dev_dbg(bus->dev, "%s p_rt->lane %d\n", __func__, p_rt->lane); sdw_fill_xport_params(&p_rt->transport_params, p_rt->num, @@ -133,6 +140,7 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt, (*port_bo) += bps * ch; } + t_data.lane = params->lane; sdw_compute_slave_ports(m_rt, &t_data); } @@ -140,69 +148,89 @@ static void _sdw_compute_port_params(struct sdw_bus *bus, struct sdw_group_params *params, int count) { struct sdw_master_runtime *m_rt; - int hstop = bus->params.col - 1; - int port_bo, i; + int port_bo, i, l; + int hstop; /* Run loop for all groups to compute transport parameters */ - for (i = 0; i < count; i++) { - port_bo = 1; + for (l = 0; l < SDW_MAX_LANES; l++) { + /* reset hstop for each lane */ + hstop = bus->params.col - 1; + for (i = 0; i < count; i++) { + if (params[i].lane != l) + continue; + port_bo = 1; - list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) { - sdw_compute_master_ports(m_rt, ¶ms[i], &port_bo, hstop); - } + list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) { + sdw_compute_master_ports(m_rt, ¶ms[i], &port_bo, hstop); + } - hstop = hstop - params[i].hwidth; + hstop = hstop - params[i].hwidth; + } } } static int sdw_compute_group_params(struct sdw_bus *bus, struct sdw_group_params *params, - int *rates, int count) + int *rates, int *lanes, int count) { struct sdw_master_runtime *m_rt; + struct sdw_port_runtime *p_rt; int sel_col = bus->params.col; unsigned int rate, bps, ch; - int i, column_needed = 0; + int i, l, column_needed; /* Calculate bandwidth per group */ for (i = 0; i < count; i++) { params[i].rate = rates[i]; + params[i].lane = lanes[i]; params[i].full_bw = bus->params.curr_dr_freq / params[i].rate; } list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) { - rate = m_rt->stream->params.rate; - bps = m_rt->stream->params.bps; - ch = m_rt->ch_count; + list_for_each_entry(p_rt, &m_rt->port_list, port_node) { + rate = m_rt->stream->params.rate; + bps = m_rt->stream->params.bps; + ch = hweight32(p_rt->ch_mask); - for (i = 0; i < count; i++) { - if (rate == params[i].rate) - params[i].payload_bw += bps * ch; + for (i = 0; i < count; i++) { + if (rate == params[i].rate && p_rt->lane == params[i].lane) + params[i].payload_bw += bps * ch; + } } } - for (i = 0; i < count; i++) { - params[i].hwidth = (sel_col * - params[i].payload_bw + params[i].full_bw - 1) / - params[i].full_bw; + for (l = 0; l < SDW_MAX_LANES; l++) { + /* reset column_needed for each lane */ + column_needed = 0; + for (i = 0; i < count; i++) { + if (params[i].lane != l) + continue; - column_needed += params[i].hwidth; + params[i].hwidth = (sel_col * params[i].payload_bw + + params[i].full_bw - 1) / params[i].full_bw; + + column_needed += params[i].hwidth; + /* There is no control column for lane 1 and above */ + if (column_needed > sel_col) + return -EINVAL; + /* Column 0 is control column on lane 0 */ + if (params[i].lane == 0 && column_needed > sel_col - 1) + return -EINVAL; + } } - if (column_needed > sel_col - 1) - return -EINVAL; return 0; } static int sdw_add_element_group_count(struct sdw_group *group, - unsigned int rate) + unsigned int rate, unsigned int lane) { int num = group->count; int i; for (i = 0; i <= num; i++) { - if (rate == group->rates[i]) + if (rate == group->rates[i] && lane == group->lanes[i]) break; if (i != num) @@ -210,6 +238,7 @@ static int sdw_add_element_group_count(struct sdw_group *group, if (group->count >= group->max_size) { unsigned int *rates; + unsigned int *lanes; group->max_size += 1; rates = krealloc(group->rates, @@ -217,10 +246,20 @@ static int sdw_add_element_group_count(struct sdw_group *group, GFP_KERNEL); if (!rates) return -ENOMEM; + group->rates = rates; + + lanes = krealloc(group->lanes, + (sizeof(int) * group->max_size), + GFP_KERNEL); + if (!lanes) + return -ENOMEM; + + group->lanes = lanes; } - group->rates[group->count++] = rate; + group->rates[group->count] = rate; + group->lanes[group->count++] = lane; } return 0; @@ -230,6 +269,7 @@ static int sdw_get_group_count(struct sdw_bus *bus, struct sdw_group *group) { struct sdw_master_runtime *m_rt; + struct sdw_port_runtime *p_rt; unsigned int rate; int ret = 0; @@ -239,6 +279,13 @@ static int sdw_get_group_count(struct sdw_bus *bus, if (!group->rates) return -ENOMEM; + group->lanes = kcalloc(group->max_size, sizeof(int), GFP_KERNEL); + if (!group->lanes) { + kfree(group->rates); + group->rates = NULL; + return -ENOMEM; + } + list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) { if (m_rt->stream->state == SDW_STREAM_DEPREPARED) continue; @@ -248,11 +295,16 @@ static int sdw_get_group_count(struct sdw_bus *bus, struct sdw_master_runtime, bus_node)) { group->rates[group->count++] = rate; - - } else { - ret = sdw_add_element_group_count(group, rate); + } + /* + * Different ports could use different lane, add group element + * even if m_rt is the first entry + */ + list_for_each_entry(p_rt, &m_rt->port_list, port_node) { + ret = sdw_add_element_group_count(group, rate, p_rt->lane); if (ret < 0) { kfree(group->rates); + kfree(group->lanes); return ret; } } @@ -287,7 +339,7 @@ static int sdw_compute_port_params(struct sdw_bus *bus) /* Compute transport parameters for grouped streams */ ret = sdw_compute_group_params(bus, params, - &group.rates[0], group.count); + &group.rates[0], &group.lanes[0], group.count); if (ret < 0) goto free_params; @@ -297,6 +349,7 @@ static int sdw_compute_port_params(struct sdw_bus *bus) kfree(params); out: kfree(group.rates); + kfree(group.lanes); return ret; }