remoteproc: mediatek: Support mt8195 scp

The SCP clock design is changed on mt8195 that doesn't need to control
SCP clock on kernel side.

Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: https://lore.kernel.org/r/20210924033935.2127-5-tinghan.shen@mediatek.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h
index 61901f5..5ff3867 100644 (file)
--- a/drivers/remoteproc/mtk_common.h
+++ b/drivers/remoteproc/mtk_common.h
@@ -72,6 +72,7 @@ struct scp_ipi_desc {
 struct mtk_scp;
 
 struct mtk_scp_of_data {
+       int (*scp_clk_get)(struct mtk_scp *scp);
        int (*scp_before_load)(struct mtk_scp *scp);
        void (*scp_irq_handler)(struct mtk_scp *scp);
        void (*scp_reset_assert)(struct mtk_scp *scp);

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 9679cc2..36e48cf 100644 (file)
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -312,6 +312,32 @@ static int scp_elf_read_ipi_buf_addr(struct mtk_scp *scp,
        return -ENOENT;
 }
 
+static int mt8183_scp_clk_get(struct mtk_scp *scp)
+{
+       struct device *dev = scp->dev;
+       int ret = 0;
+
+       scp->clk = devm_clk_get(dev, "main");
+       if (IS_ERR(scp->clk)) {
+               dev_err(dev, "Failed to get clock\n");
+               ret = PTR_ERR(scp->clk);
+       }
+
+       return ret;
+}
+
+static int mt8192_scp_clk_get(struct mtk_scp *scp)
+{
+       return mt8183_scp_clk_get(scp);
+}
+
+static int mt8195_scp_clk_get(struct mtk_scp *scp)
+{
+       scp->clk = NULL;
+
+       return 0;
+}
+
 static int mt8183_scp_before_load(struct mtk_scp *scp)
 {
        /* Clear SCP to host interrupt */
@@ -785,12 +811,9 @@ static int scp_probe(struct platform_device *pdev)
        if (ret)
                goto destroy_mutex;
 
-       scp->clk = devm_clk_get(dev, "main");
-       if (IS_ERR(scp->clk)) {
-               dev_err(dev, "Failed to get clock\n");
-               ret = PTR_ERR(scp->clk);
+       ret = scp->data->scp_clk_get(scp);
+       if (ret)
                goto release_dev_mem;
-       }
 
        /* register SCP initialization IPI */
        ret = scp_ipi_register(scp, SCP_IPI_INIT, scp_init_ipi_handler, scp);
@@ -852,6 +875,7 @@ static int scp_remove(struct platform_device *pdev)
 }
 
 static const struct mtk_scp_of_data mt8183_of_data = {
+       .scp_clk_get = mt8183_scp_clk_get,
        .scp_before_load = mt8183_scp_before_load,
        .scp_irq_handler = mt8183_scp_irq_handler,
        .scp_reset_assert = mt8183_scp_reset_assert,
@@ -864,6 +888,19 @@ static const struct mtk_scp_of_data mt8183_of_data = {
 };
 
 static const struct mtk_scp_of_data mt8192_of_data = {
+       .scp_clk_get = mt8192_scp_clk_get,
+       .scp_before_load = mt8192_scp_before_load,
+       .scp_irq_handler = mt8192_scp_irq_handler,
+       .scp_reset_assert = mt8192_scp_reset_assert,
+       .scp_reset_deassert = mt8192_scp_reset_deassert,
+       .scp_stop = mt8192_scp_stop,
+       .scp_da_to_va = mt8192_scp_da_to_va,
+       .host_to_scp_reg = MT8192_GIPC_IN_SET,
+       .host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
+};
+
+static const struct mtk_scp_of_data mt8195_of_data = {
+       .scp_clk_get = mt8195_scp_clk_get,
        .scp_before_load = mt8192_scp_before_load,
        .scp_irq_handler = mt8192_scp_irq_handler,
        .scp_reset_assert = mt8192_scp_reset_assert,
@@ -877,6 +914,7 @@ static const struct mtk_scp_of_data mt8192_of_data = {
 static const struct of_device_id mtk_scp_of_match[] = {
        { .compatible = "mediatek,mt8183-scp", .data = &mt8183_of_data },
        { .compatible = "mediatek,mt8192-scp", .data = &mt8192_of_data },
+       { .compatible = "mediatek,mt8195-scp", .data = &mt8195_of_data },
        {},
 };
 MODULE_DEVICE_TABLE(of, mtk_scp_of_match);