forked from Minki/linux
remoteproc: qcom: Initialize and enable proxy and active regulators.
Certain regulators need voting by rproc on behalf of hexagon only during restart operation but certain regulator need to be voted till hexagon is up, these regulators are identified as proxy and active regulators respectively. This patch provide interface to initialize, enable and disable proxy and active regulators separately. Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org> [bjorn: dropped disable of proxy regulators from stop] Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Avaneesh Kumar Dwivedi
Bjorn Andersson
parent
39b2410bdc
commit
19f902b53b
@ -93,8 +93,22 @@
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#define QDSS_BHS_ON BIT(21)
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#define QDSS_LDO_BYP BIT(22)
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struct reg_info {
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struct regulator *reg;
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int uV;
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int uA;
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};
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struct qcom_mss_reg_res {
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const char *supply;
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int uV;
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int uA;
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};
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struct rproc_hexagon_res {
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const char *hexagon_mba_image;
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struct qcom_mss_reg_res proxy_supply[4];
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struct qcom_mss_reg_res active_supply[2];
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char **proxy_clk_names;
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char **active_clk_names;
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};
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@ -121,8 +135,10 @@ struct q6v5 {
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int active_clk_count;
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int proxy_clk_count;
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struct regulator_bulk_data supply[4];
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struct reg_info active_regs[1];
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struct reg_info proxy_regs[3];
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int active_reg_count;
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int proxy_reg_count;
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struct completion start_done;
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struct completion stop_done;
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@ -138,63 +154,93 @@ struct q6v5 {
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size_t mpss_size;
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};
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enum {
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Q6V5_SUPPLY_CX,
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Q6V5_SUPPLY_MX,
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Q6V5_SUPPLY_MSS,
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Q6V5_SUPPLY_PLL,
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};
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static int q6v5_regulator_init(struct q6v5 *qproc)
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static int q6v5_regulator_init(struct device *dev, struct reg_info *regs,
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const struct qcom_mss_reg_res *reg_res)
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{
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int ret;
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int rc;
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int i;
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qproc->supply[Q6V5_SUPPLY_CX].supply = "cx";
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qproc->supply[Q6V5_SUPPLY_MX].supply = "mx";
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qproc->supply[Q6V5_SUPPLY_MSS].supply = "mss";
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qproc->supply[Q6V5_SUPPLY_PLL].supply = "pll";
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for (i = 0; reg_res[i].supply; i++) {
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regs[i].reg = devm_regulator_get(dev, reg_res[i].supply);
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if (IS_ERR(regs[i].reg)) {
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rc = PTR_ERR(regs[i].reg);
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if (rc != -EPROBE_DEFER)
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dev_err(dev, "Failed to get %s\n regulator",
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reg_res[i].supply);
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return rc;
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}
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ret = devm_regulator_bulk_get(qproc->dev,
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ARRAY_SIZE(qproc->supply), qproc->supply);
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if (ret < 0) {
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dev_err(qproc->dev, "failed to get supplies\n");
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return ret;
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regs[i].uV = reg_res[i].uV;
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regs[i].uA = reg_res[i].uA;
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}
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regulator_set_load(qproc->supply[Q6V5_SUPPLY_CX].consumer, 100000);
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regulator_set_load(qproc->supply[Q6V5_SUPPLY_MSS].consumer, 100000);
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regulator_set_load(qproc->supply[Q6V5_SUPPLY_PLL].consumer, 10000);
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return i;
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}
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static int q6v5_regulator_enable(struct q6v5 *qproc,
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struct reg_info *regs, int count)
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{
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int ret;
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int i;
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for (i = 0; i < count; i++) {
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if (regs[i].uV > 0) {
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ret = regulator_set_voltage(regs[i].reg,
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regs[i].uV, INT_MAX);
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if (ret) {
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dev_err(qproc->dev,
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"Failed to request voltage for %d.\n",
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i);
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goto err;
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}
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}
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if (regs[i].uA > 0) {
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ret = regulator_set_load(regs[i].reg,
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regs[i].uA);
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if (ret < 0) {
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dev_err(qproc->dev,
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"Failed to set regulator mode\n");
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goto err;
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}
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}
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ret = regulator_enable(regs[i].reg);
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if (ret) {
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dev_err(qproc->dev, "Regulator enable failed\n");
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goto err;
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}
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}
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return 0;
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err:
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for (; i >= 0; i--) {
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if (regs[i].uV > 0)
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regulator_set_voltage(regs[i].reg, 0, INT_MAX);
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if (regs[i].uA > 0)
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regulator_set_load(regs[i].reg, 0);
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regulator_disable(regs[i].reg);
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}
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return ret;
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}
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static int q6v5_regulator_enable(struct q6v5 *qproc)
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static void q6v5_regulator_disable(struct q6v5 *qproc,
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struct reg_info *regs, int count)
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{
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struct regulator *mss = qproc->supply[Q6V5_SUPPLY_MSS].consumer;
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struct regulator *mx = qproc->supply[Q6V5_SUPPLY_MX].consumer;
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int ret;
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int i;
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/* TODO: Q6V5_SUPPLY_CX is supposed to be set to super-turbo here */
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for (i = 0; i < count; i++) {
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if (regs[i].uV > 0)
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regulator_set_voltage(regs[i].reg, 0, INT_MAX);
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ret = regulator_set_voltage(mx, 1050000, INT_MAX);
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if (ret)
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return ret;
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if (regs[i].uA > 0)
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regulator_set_load(regs[i].reg, 0);
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regulator_set_voltage(mss, 1000000, 1150000);
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return regulator_bulk_enable(ARRAY_SIZE(qproc->supply), qproc->supply);
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}
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static void q6v5_regulator_disable(struct q6v5 *qproc)
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{
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struct regulator *mss = qproc->supply[Q6V5_SUPPLY_MSS].consumer;
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struct regulator *mx = qproc->supply[Q6V5_SUPPLY_MX].consumer;
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/* TODO: Q6V5_SUPPLY_CX corner votes should be released */
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regulator_bulk_disable(ARRAY_SIZE(qproc->supply), qproc->supply);
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regulator_set_voltage(mx, 0, INT_MAX);
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regulator_set_voltage(mss, 0, 1150000);
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regulator_disable(regs[i].reg);
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}
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}
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static int q6v5_clk_enable(struct device *dev,
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@ -517,9 +563,10 @@ static int q6v5_start(struct rproc *rproc)
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struct q6v5 *qproc = (struct q6v5 *)rproc->priv;
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int ret;
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ret = q6v5_regulator_enable(qproc);
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ret = q6v5_regulator_enable(qproc, qproc->proxy_regs,
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qproc->proxy_reg_count);
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if (ret) {
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dev_err(qproc->dev, "failed to enable supplies\n");
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dev_err(qproc->dev, "failed to enable proxy supplies\n");
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return ret;
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}
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@ -527,12 +574,19 @@ static int q6v5_start(struct rproc *rproc)
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qproc->proxy_clk_count);
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if (ret) {
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dev_err(qproc->dev, "failed to enable proxy clocks\n");
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goto disable_vdd;
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goto disable_proxy_reg;
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}
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ret = q6v5_regulator_enable(qproc, qproc->active_regs,
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qproc->active_reg_count);
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if (ret) {
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dev_err(qproc->dev, "failed to enable supplies\n");
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goto disable_proxy_clk;
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}
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ret = reset_control_deassert(qproc->mss_restart);
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if (ret) {
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dev_err(qproc->dev, "failed to deassert mss restart\n");
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goto disable_proxy_clk;
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goto disable_vdd;
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}
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ret = q6v5_clk_enable(qproc->dev, qproc->active_clks,
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@ -577,6 +631,8 @@ static int q6v5_start(struct rproc *rproc)
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q6v5_clk_disable(qproc->dev, qproc->proxy_clks,
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qproc->proxy_clk_count);
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q6v5_regulator_disable(qproc, qproc->proxy_regs,
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qproc->proxy_reg_count);
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return 0;
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@ -588,11 +644,15 @@ halt_axi_ports:
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qproc->active_clk_count);
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assert_reset:
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reset_control_assert(qproc->mss_restart);
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disable_vdd:
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q6v5_regulator_disable(qproc, qproc->active_regs,
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qproc->active_reg_count);
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disable_proxy_clk:
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q6v5_clk_disable(qproc->dev, qproc->proxy_clks,
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qproc->proxy_clk_count);
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disable_vdd:
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q6v5_regulator_disable(qproc);
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disable_proxy_reg:
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q6v5_regulator_disable(qproc, qproc->proxy_regs,
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qproc->proxy_reg_count);
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return ret;
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}
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@ -621,7 +681,8 @@ static int q6v5_stop(struct rproc *rproc)
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reset_control_assert(qproc->mss_restart);
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q6v5_clk_disable(qproc->dev, qproc->active_clks,
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qproc->active_clk_count);
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q6v5_regulator_disable(qproc);
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q6v5_regulator_disable(qproc, qproc->active_regs,
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qproc->active_reg_count);
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return 0;
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}
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@ -894,9 +955,21 @@ static int q6v5_probe(struct platform_device *pdev)
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}
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qproc->active_clk_count = ret;
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ret = q6v5_regulator_init(qproc);
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if (ret)
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ret = q6v5_regulator_init(&pdev->dev, qproc->proxy_regs,
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desc->proxy_supply);
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if (ret < 0) {
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dev_err(&pdev->dev, "Failed to get proxy regulators.\n");
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goto free_rproc;
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}
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qproc->proxy_reg_count = ret;
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ret = q6v5_regulator_init(&pdev->dev, qproc->active_regs,
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desc->active_supply);
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if (ret < 0) {
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dev_err(&pdev->dev, "Failed to get active regulators.\n");
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goto free_rproc;
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}
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qproc->active_reg_count = ret;
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ret = q6v5_init_reset(qproc);
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if (ret)
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@ -948,6 +1021,29 @@ static int q6v5_remove(struct platform_device *pdev)
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static const struct rproc_hexagon_res msm8916_mss = {
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.hexagon_mba_image = "mba.mbn",
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.proxy_supply = (struct qcom_mss_reg_res[]) {
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{
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.supply = "mx",
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.uV = 1050000,
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},
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{
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.supply = "cx",
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.uA = 100000,
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},
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{
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.supply = "pll",
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.uA = 100000,
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},
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{}
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},
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.active_supply = (struct qcom_mss_reg_res[]) {
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{
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.supply = "mss",
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.uV = 1050000,
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.uA = 100000,
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},
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{}
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},
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.proxy_clk_names = (char*[]){
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"xo",
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NULL
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@ -962,6 +1058,29 @@ static const struct rproc_hexagon_res msm8916_mss = {
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static const struct rproc_hexagon_res msm8974_mss = {
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.hexagon_mba_image = "mba.b00",
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.proxy_supply = (struct qcom_mss_reg_res[]) {
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{
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.supply = "mx",
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.uV = 1050000,
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},
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{
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.supply = "cx",
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.uA = 100000,
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},
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{
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.supply = "pll",
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.uA = 100000,
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},
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{}
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},
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.active_supply = (struct qcom_mss_reg_res[]) {
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{
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.supply = "mss",
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.uV = 1050000,
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.uA = 100000,
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},
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{}
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},
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.proxy_clk_names = (char*[]){
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"xo",
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NULL
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