1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c
new file mode 100644
index 000000000000..34c24442d34b
--- /dev/null
+++ b/drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c
@@ -0,0 +1,176 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ * Copyright (c) 2018, The Linux Foundation
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/iopoll.h>
+
+#include "dsi_pll.h"
+#include "dsi.xml.h"
+
+struct dsi_pll_10nm {
+	struct msm_dsi_pll base;
+
+	int id;
+	struct platform_device *pdev;
+
+	void __iomem *phy_cmn_mmio;
+	void __iomem *mmio;
+
+	int vco_delay;
+
+	enum msm_dsi_phy_usecase uc;
+	struct dsi_pll_10nm *slave;
+};
+
+#define to_pll_10nm(x)	container_of(x, struct dsi_pll_10nm, base)
+
+/*
+ * Global list of private DSI PLL struct pointers. We need this for Dual DSI
+ * mode, where the master PLL's clk_ops needs access the slave's private data
+ */
+static struct dsi_pll_10nm *pll_10nm_list[DSI_MAX];
+
+static int dsi_pll_10nm_vco_set_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long parent_rate)
+{
+	struct msm_dsi_pll *pll = hw_clk_to_pll(hw);
+	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
+
+	DBG("DSI PLL%d rate=%lu, parent's=%lu", pll_10nm->id, rate,
+	    parent_rate);
+
+	return 0;
+}
+
+static unsigned long dsi_pll_10nm_vco_recalc_rate(struct clk_hw *hw,
+						  unsigned long parent_rate)
+{
+	struct msm_dsi_pll *pll = hw_clk_to_pll(hw);
+	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
+	u64 vco_rate = 0x0;
+
+	DBG("DSI PLL%d returning vco rate = %lu", pll_10nm->id,
+	    (unsigned long)vco_rate);
+
+	return (unsigned long)vco_rate;
+}
+
+static const struct clk_ops clk_ops_dsi_pll_10nm_vco = {
+	.round_rate = msm_dsi_pll_helper_clk_round_rate,
+	.set_rate = dsi_pll_10nm_vco_set_rate,
+	.recalc_rate = dsi_pll_10nm_vco_recalc_rate,
+	.prepare = msm_dsi_pll_helper_clk_prepare,
+	.unprepare = msm_dsi_pll_helper_clk_unprepare,
+};
+
+/*
+ * PLL Callbacks
+ */
+
+static void dsi_pll_10nm_save_state(struct msm_dsi_pll *pll)
+{
+	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
+
+	DBG("DSI PLL%d", pll_10nm->id);
+}
+
+static int dsi_pll_10nm_restore_state(struct msm_dsi_pll *pll)
+{
+	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
+
+	DBG("DSI PLL%d", pll_10nm->id);
+
+	return 0;
+}
+
+static int dsi_pll_10nm_set_usecase(struct msm_dsi_pll *pll,
+				    enum msm_dsi_phy_usecase uc)
+{
+	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
+
+	DBG("DSI PLL%d", pll_10nm->id);
+
+	return 0;
+}
+
+static int dsi_pll_10nm_get_provider(struct msm_dsi_pll *pll,
+				     struct clk **byte_clk_provider,
+				     struct clk **pixel_clk_provider)
+{
+	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
+
+	DBG("DSI PLL%d", pll_10nm->id);
+
+	if (byte_clk_provider)
+		*byte_clk_provider = NULL;
+	if (pixel_clk_provider)
+		*pixel_clk_provider = NULL;
+
+	return 0;
+}
+
+static void dsi_pll_10nm_destroy(struct msm_dsi_pll *pll)
+{
+	struct dsi_pll_10nm *pll_10nm = to_pll_10nm(pll);
+
+	DBG("DSI PLL%d", pll_10nm->id);
+}
+
+static int pll_10nm_register(struct dsi_pll_10nm *pll_10nm)
+{
+	return 0;
+}
+
+struct msm_dsi_pll *msm_dsi_pll_10nm_init(struct platform_device *pdev, int id)
+{
+	struct dsi_pll_10nm *pll_10nm;
+	struct msm_dsi_pll *pll;
+	int ret;
+
+	if (!pdev)
+		return ERR_PTR(-ENODEV);
+
+	pll_10nm = devm_kzalloc(&pdev->dev, sizeof(*pll_10nm), GFP_KERNEL);
+	if (!pll_10nm)
+		return ERR_PTR(-ENOMEM);
+
+	DBG("DSI PLL%d", id);
+
+	pll_10nm->pdev = pdev;
+	pll_10nm->id = id;
+	pll_10nm_list[id] = pll_10nm;
+
+	pll_10nm->phy_cmn_mmio = msm_ioremap(pdev, "dsi_phy", "DSI_PHY");
+	if (IS_ERR_OR_NULL(pll_10nm->phy_cmn_mmio)) {
+		dev_err(&pdev->dev, "failed to map CMN PHY base\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	pll_10nm->mmio = msm_ioremap(pdev, "dsi_pll", "DSI_PLL");
+	if (IS_ERR_OR_NULL(pll_10nm->mmio)) {
+		dev_err(&pdev->dev, "failed to map PLL base\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	pll = &pll_10nm->base;
+	pll->min_rate = 1000000000UL;
+	pll->max_rate = 3500000000UL;
+	pll->get_provider = dsi_pll_10nm_get_provider;
+	pll->destroy = dsi_pll_10nm_destroy;
+	pll->save_state = dsi_pll_10nm_save_state;
+	pll->restore_state = dsi_pll_10nm_restore_state;
+	pll->set_usecase = dsi_pll_10nm_set_usecase;
+
+	pll_10nm->vco_delay = 1;
+
+	ret = pll_10nm_register(pll_10nm);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register PLL: %d\n", ret);
+		return ERR_PTR(ret);
+	}
+
+	return pll;
+}