diff options
| author | Sibi Sankar <sibis@codeaurora.org> | 2020-01-17 19:21:28 +0530 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-01-21 15:37:01 -0800 |
| commit | 7e0f8688798c72ba29c50abb7156c40c72954290 (patch) | |
| tree | ac8e382b56d77f0567db7fcd0d4e38b574bb116d /drivers/remoteproc/qcom_q6v5_mss.c | |
| parent | c87846571587f1c2217f16104586fd33216fc9e0 (diff) | |
| download | lwn-7e0f8688798c72ba29c50abb7156c40c72954290.tar.gz lwn-7e0f8688798c72ba29c50abb7156c40c72954290.zip | |
remoteproc: qcom: q6v5-mss: Improve readability across clk handling
Define CLKEN and CLKOFF for improving readability of Q6SS clock
handling.
Reviewed-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Link: https://lore.kernel.org/r/20200117135130.3605-3-sibis@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc/qcom_q6v5_mss.c')
| -rw-r--r-- | drivers/remoteproc/qcom_q6v5_mss.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index 51f451311f5f..ffb5b0ef71ff 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -79,6 +79,11 @@ #define Q6SS_CORE_ARES BIT(1) #define Q6SS_BUS_ARES_ENABLE BIT(2) +/* QDSP6SS CBCR */ +#define Q6SS_CBCR_CLKEN BIT(0) +#define Q6SS_CBCR_CLKOFF BIT(31) +#define Q6SS_CBCR_TIMEOUT_US 200 + /* QDSP6SS_GFMUX_CTL */ #define Q6SS_CLK_ENABLE BIT(1) @@ -99,7 +104,6 @@ #define QDSP6v56_BHS_ON BIT(24) #define QDSP6v56_CLAMP_WL BIT(21) #define QDSP6v56_CLAMP_QMC_MEM BIT(22) -#define HALT_CHECK_MAX_LOOPS 200 #define QDSP6SS_XO_CBCR 0x0038 #define QDSP6SS_ACC_OVERRIDE_VAL 0x20 @@ -501,12 +505,12 @@ static int q6v5proc_reset(struct q6v5 *qproc) if (qproc->version == MSS_SDM845) { val = readl(qproc->reg_base + QDSP6SS_SLEEP); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_SLEEP); ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_SLEEP, - val, !(val & BIT(31)), 1, - SLEEP_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "QDSP6SS Sleep clock timed out\n"); return -ETIMEDOUT; @@ -529,12 +533,12 @@ static int q6v5proc_reset(struct q6v5 *qproc) goto pbl_wait; } else if (qproc->version == MSS_SC7180) { val = readl(qproc->reg_base + QDSP6SS_SLEEP); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_SLEEP); ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_SLEEP, - val, !(val & BIT(31)), 1, - SLEEP_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "QDSP6SS Sleep clock timed out\n"); return -ETIMEDOUT; @@ -542,12 +546,12 @@ static int q6v5proc_reset(struct q6v5 *qproc) /* Turn on the XO clock needed for PLL setup */ val = readl(qproc->reg_base + QDSP6SS_XO_CBCR); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_XO_CBCR); ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_XO_CBCR, - val, !(val & BIT(31)), 1, - SLEEP_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "QDSP6SS XO clock timed out\n"); return -ETIMEDOUT; @@ -555,7 +559,7 @@ static int q6v5proc_reset(struct q6v5 *qproc) /* Configure Q6 core CBCR to auto-enable after reset sequence */ val = readl(qproc->reg_base + QDSP6SS_CORE_CBCR); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_CORE_CBCR); /* De-assert the Q6 stop core signal */ @@ -590,13 +594,13 @@ static int q6v5proc_reset(struct q6v5 *qproc) /* BHS require xo cbcr to be enabled */ val = readl(qproc->reg_base + QDSP6SS_XO_CBCR); - val |= 0x1; + val |= Q6SS_CBCR_CLKEN; writel(val, qproc->reg_base + QDSP6SS_XO_CBCR); /* Read CLKOFF bit to go low indicating CLK is enabled */ ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_XO_CBCR, - val, !(val & BIT(31)), 1, - HALT_CHECK_MAX_LOOPS); + val, !(val & Q6SS_CBCR_CLKOFF), 1, + Q6SS_CBCR_TIMEOUT_US); if (ret) { dev_err(qproc->dev, "xo cbcr enabling timed out (rc:%d)\n", ret); |