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path: root/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
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Diffstat (limited to 'drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c')
-rw-r--r--drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
new file mode 100644
index 000000000000..f1a7c7b46420
--- /dev/null
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "dsi_phy.h"
+#include "dsi.xml.h"
+
+static void dsi_28nm_dphy_set_timing(struct msm_dsi_phy *phy,
+ struct msm_dsi_dphy_timing *timing)
+{
+ void __iomem *base = phy->base;
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_0,
+ DSI_28nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_1,
+ DSI_28nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_2,
+ DSI_28nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
+ if (timing->clk_zero & BIT(8))
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_3,
+ DSI_28nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_4,
+ DSI_28nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_5,
+ DSI_28nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_6,
+ DSI_28nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_7,
+ DSI_28nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_8,
+ DSI_28nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_9,
+ DSI_28nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
+ DSI_28nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_10,
+ DSI_28nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
+ dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_11,
+ DSI_28nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
+}
+
+static void dsi_28nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
+{
+ void __iomem *base = phy->reg_base;
+
+ if (!enable) {
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
+ return;
+ }
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 1);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_5, 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_3, 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_2, 0x3);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_1, 0x9);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x7);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_4, 0x20);
+}
+
+static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
+ const unsigned long bit_rate, const unsigned long esc_rate)
+{
+ struct msm_dsi_dphy_timing *timing = &phy->timing;
+ int i;
+ void __iomem *base = phy->base;
+
+ DBG("");
+
+ if (msm_dsi_dphy_timing_calc(timing, bit_rate, esc_rate)) {
+ dev_err(&phy->pdev->dev,
+ "%s: D-PHY timing calculation failed\n", __func__);
+ return -EINVAL;
+ }
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_0, 0xff);
+
+ dsi_28nm_phy_regulator_ctrl(phy, true);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LDO_CNTRL, 0x00);
+
+ dsi_28nm_dphy_set_timing(phy, timing);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_1, 0x00);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_1, 0x6);
+
+ for (i = 0; i < 4; i++) {
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_0(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_1(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_2(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_3(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_DATAPATH(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_DEBUG_SEL(i), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_0(i), 0x1);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_1(i), 0x97);
+ }
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(0), 0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(1), 0x5);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(2), 0xa);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(3), 0xf);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_CFG_1, 0xc0);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR0, 0x1);
+ dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR1, 0xbb);
+
+ dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
+
+ msm_dsi_phy_set_src_pll(phy, src_pll_id,
+ REG_DSI_28nm_PHY_GLBL_TEST_CTRL,
+ DSI_28nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL);
+
+ return 0;
+}
+
+static void dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
+{
+ dsi_phy_write(phy->base + REG_DSI_28nm_PHY_CTRL_0, 0);
+ dsi_28nm_phy_regulator_ctrl(phy, false);
+
+ /*
+ * Wait for the registers writes to complete in order to
+ * ensure that the phy is completely disabled
+ */
+ wmb();
+}
+
+const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs = {
+ .type = MSM_DSI_PHY_28NM_HPM,
+ .src_pll_truthtable = { {true, true}, {false, true} },
+ .reg_cfg = {
+ .num = 1,
+ .regs = {
+ {"vddio", 1800000, 1800000, 100000, 100},
+ },
+ },
+ .ops = {
+ .enable = dsi_28nm_phy_enable,
+ .disable = dsi_28nm_phy_disable,
+ },
+};
+
+const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs = {
+ .type = MSM_DSI_PHY_28NM_LP,
+ .src_pll_truthtable = { {true, true}, {true, true} },
+ .reg_cfg = {
+ .num = 1,
+ .regs = {
+ {"vddio", 1800000, 1800000, 100000, 100},
+ },
+ },
+ .ops = {
+ .enable = dsi_28nm_phy_enable,
+ .disable = dsi_28nm_phy_disable,
+ },
+};
+