From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alok Chauhan Subject: [PATCH 4/6] spi: spi-geni-qcom: Add interconnect support Date: Tue, 22 Jan 2019 12:03:34 +0530 Message-ID: <1548138816-1149-5-git-send-email-alokc@codeaurora.org> References: <1548138816-1149-1-git-send-email-alokc@codeaurora.org> Return-path: In-Reply-To: <1548138816-1149-1-git-send-email-alokc@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, linux-serial@vger.kernel.org, Mark Brown Cc: andy.gross@linaro.org, david.brown@linaro.org, georgi.djakov@linaro.org, dianders@chromium.org, swboyd@chromium.org, bjorn.andersson@linaro.org, Alok Chauhan List-Id: linux-arm-msm@vger.kernel.org Get the interconnect paths for SPI based Serial Engine device and vote accordingly based on maximum supported SPI frequency. Signed-off-by: Alok Chauhan --- drivers/spi/spi-geni-qcom.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index fdb7cb88..7bbbe9d 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -12,6 +12,7 @@ #include #include #include +#include /* SPI SE specific registers and respective register fields */ #define SE_SPI_CPHA 0x224 @@ -589,6 +590,15 @@ static int spi_geni_probe(struct platform_device *pdev) spin_lock_init(&mas->lock); pm_runtime_enable(&pdev->dev); + /* Set the bus quota to a reasonable value */ + mas->se.avg_bw = Bps_to_icc(2500); + mas->se.peak_bw = Bps_to_icc(200000000); + ret = geni_interconnect_init(&mas->se); + if (ret) { + dev_err(&pdev->dev, "interconnect_init failed %d\n", ret); + return ret; + } + ret = spi_geni_init(mas); if (ret) goto spi_geni_probe_runtime_disable; @@ -628,8 +638,15 @@ static int __maybe_unused spi_geni_runtime_suspend(struct device *dev) { struct spi_master *spi = dev_get_drvdata(dev); struct spi_geni_master *mas = spi_master_get_devdata(spi); + int ret; - return geni_se_resources_off(&mas->se); + ret = geni_se_resources_off(&mas->se); + if (ret) + return ret; + + geni_icc_update_bw(&mas->se, false); + + return 0; } static int __maybe_unused spi_geni_runtime_resume(struct device *dev) @@ -637,6 +654,7 @@ static int __maybe_unused spi_geni_runtime_resume(struct device *dev) struct spi_master *spi = dev_get_drvdata(dev); struct spi_geni_master *mas = spi_master_get_devdata(spi); + geni_icc_update_bw(&mas->se, true); return geni_se_resources_on(&mas->se); } -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project