685 lines
20 KiB
C
685 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2018 Rockchip Electronics Co. Ltd.
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*
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* Author: Wyon Bi <bivvy.bi@rock-chips.com>
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*/
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#include <linux/kernel.h>
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#include <linux/clk.h>
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#include <linux/iopoll.h>
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#include <linux/clk-provider.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/reset.h>
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#include <linux/phy/phy.h>
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#include <linux/phy/phy-mipi-dphy.h>
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#include <linux/pm_runtime.h>
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#include <linux/mfd/syscon.h>
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#define PSEC_PER_SEC 1000000000000LL
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#define UPDATE(x, h, l) (((x) << (l)) & GENMASK((h), (l)))
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/*
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* The offset address[7:0] is distributed two parts, one from the bit7 to bit5
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* is the first address, the other from the bit4 to bit0 is the second address.
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* when you configure the registers, you must set both of them. The Clock Lane
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* and Data Lane use the same registers with the same second address, but the
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* first address is different.
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*/
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#define FIRST_ADDRESS(x) (((x) & 0x7) << 5)
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#define SECOND_ADDRESS(x) (((x) & 0x1f) << 0)
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#define PHY_REG(first, second) (FIRST_ADDRESS(first) | \
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SECOND_ADDRESS(second))
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/* Analog Register Part: reg00 */
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#define BANDGAP_POWER_MASK BIT(7)
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#define BANDGAP_POWER_DOWN BIT(7)
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#define BANDGAP_POWER_ON 0
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#define LANE_EN_MASK GENMASK(6, 2)
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#define LANE_EN_CK BIT(6)
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#define LANE_EN_3 BIT(5)
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#define LANE_EN_2 BIT(4)
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#define LANE_EN_1 BIT(3)
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#define LANE_EN_0 BIT(2)
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#define POWER_WORK_MASK GENMASK(1, 0)
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#define POWER_WORK_ENABLE UPDATE(1, 1, 0)
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#define POWER_WORK_DISABLE UPDATE(2, 1, 0)
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/* Analog Register Part: reg01 */
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#define REG_SYNCRST_MASK BIT(2)
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#define REG_SYNCRST_RESET BIT(2)
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#define REG_SYNCRST_NORMAL 0
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#define REG_LDOPD_MASK BIT(1)
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#define REG_LDOPD_POWER_DOWN BIT(1)
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#define REG_LDOPD_POWER_ON 0
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#define REG_PLLPD_MASK BIT(0)
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#define REG_PLLPD_POWER_DOWN BIT(0)
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#define REG_PLLPD_POWER_ON 0
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/* Analog Register Part: reg03 */
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#define REG_FBDIV_HI_MASK BIT(5)
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#define REG_FBDIV_HI(x) UPDATE((x >> 8), 5, 5)
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#define REG_PREDIV_MASK GENMASK(4, 0)
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#define REG_PREDIV(x) UPDATE(x, 4, 0)
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/* Analog Register Part: reg04 */
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#define REG_FBDIV_LO_MASK GENMASK(7, 0)
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#define REG_FBDIV_LO(x) UPDATE(x, 7, 0)
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/* Analog Register Part: reg05 */
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#define SAMPLE_CLOCK_PHASE_MASK GENMASK(6, 4)
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#define SAMPLE_CLOCK_PHASE(x) UPDATE(x, 6, 4)
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#define CLOCK_LANE_SKEW_PHASE_MASK GENMASK(2, 0)
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#define CLOCK_LANE_SKEW_PHASE(x) UPDATE(x, 2, 0)
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/* Analog Register Part: reg06 */
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#define DATA_LANE_3_SKEW_PHASE_MASK GENMASK(6, 4)
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#define DATA_LANE_3_SKEW_PHASE(x) UPDATE(x, 6, 4)
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#define DATA_LANE_2_SKEW_PHASE_MASK GENMASK(2, 0)
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#define DATA_LANE_2_SKEW_PHASE(x) UPDATE(x, 2, 0)
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/* Analog Register Part: reg07 */
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#define DATA_LANE_1_SKEW_PHASE_MASK GENMASK(6, 4)
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#define DATA_LANE_1_SKEW_PHASE(x) UPDATE(x, 6, 4)
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#define DATA_LANE_0_SKEW_PHASE_MASK GENMASK(2, 0)
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#define DATA_LANE_0_SKEW_PHASE(x) UPDATE(x, 2, 0)
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/* Analog Register Part: reg08 */
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#define SAMPLE_CLOCK_DIRECTION_MASK BIT(4)
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#define SAMPLE_CLOCK_DIRECTION_REVERSE BIT(4)
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#define SAMPLE_CLOCK_DIRECTION_FORWARD 0
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/* Digital Register Part: reg00 */
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#define REG_DIG_RSTN_MASK BIT(0)
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#define REG_DIG_RSTN_NORMAL BIT(0)
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#define REG_DIG_RSTN_RESET 0
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/* Digital Register Part: reg01 */
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#define INVERT_TXCLKESC_MASK BIT(1)
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#define INVERT_TXCLKESC_ENABLE BIT(1)
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#define INVERT_TXCLKESC_DISABLE 0
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#define INVERT_TXBYTECLKHS_MASK BIT(0)
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#define INVERT_TXBYTECLKHS_ENABLE BIT(0)
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#define INVERT_TXBYTECLKHS_DISABLE 0
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg05 */
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#define T_LPX_CNT_MASK GENMASK(5, 0)
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#define T_LPX_CNT(x) UPDATE(x, 5, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg06 */
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#define T_HS_PREPARE_CNT_MASK GENMASK(6, 0)
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#define T_HS_PREPARE_CNT(x) UPDATE(x, 6, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg07 */
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#define T_HS_ZERO_CNT_MASK GENMASK(5, 0)
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#define T_HS_ZERO_CNT(x) UPDATE(x, 5, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg08 */
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#define T_HS_TRAIL_CNT_MASK GENMASK(6, 0)
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#define T_HS_TRAIL_CNT(x) UPDATE(x, 6, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg09 */
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#define T_HS_EXIT_CNT_MASK GENMASK(4, 0)
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#define T_HS_EXIT_CNT(x) UPDATE(x, 4, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0a */
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#define T_CLK_POST_CNT_MASK GENMASK(3, 0)
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#define T_CLK_POST_CNT(x) UPDATE(x, 3, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0c */
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#define LPDT_TX_PPI_SYNC_MASK BIT(2)
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#define LPDT_TX_PPI_SYNC_ENABLE BIT(2)
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#define LPDT_TX_PPI_SYNC_DISABLE 0
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#define T_WAKEUP_CNT_HI_MASK GENMASK(1, 0)
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#define T_WAKEUP_CNT_HI(x) UPDATE(x, 1, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0d */
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#define T_WAKEUP_CNT_LO_MASK GENMASK(7, 0)
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#define T_WAKEUP_CNT_LO(x) UPDATE(x, 7, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg0e */
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#define T_CLK_PRE_CNT_MASK GENMASK(3, 0)
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#define T_CLK_PRE_CNT(x) UPDATE(x, 3, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg10 */
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#define T_TA_GO_CNT_MASK GENMASK(5, 0)
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#define T_TA_GO_CNT(x) UPDATE(x, 5, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg11 */
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#define T_TA_SURE_CNT_MASK GENMASK(5, 0)
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#define T_TA_SURE_CNT(x) UPDATE(x, 5, 0)
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/* Clock/Data0/Data1/Data2/Data3 Lane Register Part: reg12 */
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#define T_TA_WAIT_CNT_MASK GENMASK(5, 0)
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#define T_TA_WAIT_CNT(x) UPDATE(x, 5, 0)
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/* LVDS Register Part: reg00 */
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#define LVDS_DIGITAL_INTERNAL_RESET_MASK BIT(2)
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#define LVDS_DIGITAL_INTERNAL_RESET_DISABLE BIT(2)
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#define LVDS_DIGITAL_INTERNAL_RESET_ENABLE 0
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/* LVDS Register Part: reg01 */
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#define LVDS_DIGITAL_INTERNAL_ENABLE_MASK BIT(7)
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#define LVDS_DIGITAL_INTERNAL_ENABLE BIT(7)
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#define LVDS_DIGITAL_INTERNAL_DISABLE 0
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/* LVDS Register Part: reg03 */
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#define MODE_ENABLE_MASK GENMASK(2, 0)
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#define TTL_MODE_ENABLE BIT(2)
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#define LVDS_MODE_ENABLE BIT(1)
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#define MIPI_MODE_ENABLE BIT(0)
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/* LVDS Register Part: reg0b */
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#define LVDS_LANE_EN_MASK GENMASK(7, 3)
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#define LVDS_DATA_LANE0_EN BIT(7)
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#define LVDS_DATA_LANE1_EN BIT(6)
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#define LVDS_DATA_LANE2_EN BIT(5)
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#define LVDS_DATA_LANE3_EN BIT(4)
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#define LVDS_CLK_LANE_EN BIT(3)
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#define LVDS_PLL_POWER_MASK BIT(2)
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#define LVDS_PLL_POWER_OFF BIT(2)
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#define LVDS_PLL_POWER_ON 0
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#define LVDS_BANDGAP_POWER_MASK BIT(0)
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#define LVDS_BANDGAP_POWER_DOWN BIT(0)
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#define LVDS_BANDGAP_POWER_ON 0
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#define DSI_PHY_RSTZ 0xa0
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#define PHY_ENABLECLK BIT(2)
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#define DSI_PHY_STATUS 0xb0
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#define PHY_LOCK BIT(0)
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struct inno_dsidphy {
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struct device *dev;
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struct clk *ref_clk;
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struct clk *pclk_phy;
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struct clk *pclk_host;
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void __iomem *phy_base;
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void __iomem *host_base;
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struct reset_control *rst;
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enum phy_mode mode;
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struct phy_configure_opts_mipi_dphy dphy_cfg;
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struct clk *pll_clk;
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struct {
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struct clk_hw hw;
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u8 prediv;
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u16 fbdiv;
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unsigned long rate;
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} pll;
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};
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enum {
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REGISTER_PART_ANALOG,
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REGISTER_PART_DIGITAL,
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REGISTER_PART_CLOCK_LANE,
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REGISTER_PART_DATA0_LANE,
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REGISTER_PART_DATA1_LANE,
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REGISTER_PART_DATA2_LANE,
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REGISTER_PART_DATA3_LANE,
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REGISTER_PART_LVDS,
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};
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static inline struct inno_dsidphy *hw_to_inno(struct clk_hw *hw)
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{
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return container_of(hw, struct inno_dsidphy, pll.hw);
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}
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static void phy_update_bits(struct inno_dsidphy *inno,
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u8 first, u8 second, u8 mask, u8 val)
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{
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u32 reg = PHY_REG(first, second) << 2;
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unsigned int tmp, orig;
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orig = readl(inno->phy_base + reg);
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tmp = orig & ~mask;
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tmp |= val & mask;
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writel(tmp, inno->phy_base + reg);
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}
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static unsigned long inno_dsidphy_pll_calc_rate(struct inno_dsidphy *inno,
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unsigned long rate)
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{
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unsigned long prate = clk_get_rate(inno->ref_clk);
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unsigned long best_freq = 0;
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unsigned long fref, fout;
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u8 min_prediv, max_prediv;
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u8 _prediv, best_prediv = 1;
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u16 _fbdiv, best_fbdiv = 1;
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u32 min_delta = UINT_MAX;
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/*
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* The PLL output frequency can be calculated using a simple formula:
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* PLL_Output_Frequency = (FREF / PREDIV * FBDIV) / 2
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* PLL_Output_Frequency: it is equal to DDR-Clock-Frequency * 2
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*/
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fref = prate / 2;
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if (rate > 1000000000UL)
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fout = 1000000000UL;
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else
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fout = rate;
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/* 5Mhz < Fref / prediv < 40MHz */
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min_prediv = DIV_ROUND_UP(fref, 40000000);
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max_prediv = fref / 5000000;
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for (_prediv = min_prediv; _prediv <= max_prediv; _prediv++) {
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u64 tmp;
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u32 delta;
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tmp = (u64)fout * _prediv;
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do_div(tmp, fref);
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_fbdiv = tmp;
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/*
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* The possible settings of feedback divider are
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* 12, 13, 14, 16, ~ 511
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*/
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if (_fbdiv == 15)
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continue;
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if (_fbdiv < 12 || _fbdiv > 511)
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continue;
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tmp = (u64)_fbdiv * fref;
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do_div(tmp, _prediv);
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delta = abs(fout - tmp);
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if (!delta) {
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best_prediv = _prediv;
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best_fbdiv = _fbdiv;
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best_freq = tmp;
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break;
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} else if (delta < min_delta) {
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best_prediv = _prediv;
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best_fbdiv = _fbdiv;
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best_freq = tmp;
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min_delta = delta;
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}
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}
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if (best_freq) {
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inno->pll.prediv = best_prediv;
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inno->pll.fbdiv = best_fbdiv;
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inno->pll.rate = best_freq;
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}
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return best_freq;
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}
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static void inno_dsidphy_mipi_mode_enable(struct inno_dsidphy *inno)
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{
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struct phy_configure_opts_mipi_dphy *cfg = &inno->dphy_cfg;
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const struct {
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unsigned long rate;
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u8 hs_prepare;
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u8 clk_lane_hs_zero;
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u8 data_lane_hs_zero;
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u8 hs_trail;
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} timings[] = {
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{ 110000000, 0x20, 0x16, 0x02, 0x22},
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{ 150000000, 0x06, 0x16, 0x03, 0x45},
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{ 200000000, 0x18, 0x17, 0x04, 0x0b},
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{ 250000000, 0x05, 0x17, 0x05, 0x16},
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{ 300000000, 0x51, 0x18, 0x06, 0x2c},
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{ 400000000, 0x64, 0x19, 0x07, 0x33},
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{ 500000000, 0x20, 0x1b, 0x07, 0x4e},
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{ 600000000, 0x6a, 0x1d, 0x08, 0x3a},
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{ 700000000, 0x3e, 0x1e, 0x08, 0x6a},
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{ 800000000, 0x21, 0x1f, 0x09, 0x29},
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{1000000000, 0x09, 0x20, 0x09, 0x27},
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};
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u32 t_txbyteclkhs, t_txclkesc;
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u32 txbyteclkhs, txclkesc, esc_clk_div;
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u32 hs_exit, clk_post, clk_pre, wakeup, lpx, ta_go, ta_sure, ta_wait;
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u32 hs_prepare, hs_trail, hs_zero, clk_lane_hs_zero, data_lane_hs_zero;
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unsigned int i;
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inno_dsidphy_pll_calc_rate(inno, cfg->hs_clk_rate);
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/* Select MIPI mode */
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phy_update_bits(inno, REGISTER_PART_LVDS, 0x03,
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MODE_ENABLE_MASK, MIPI_MODE_ENABLE);
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/* Configure PLL */
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phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
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REG_PREDIV_MASK, REG_PREDIV(inno->pll.prediv));
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phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
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REG_FBDIV_HI_MASK, REG_FBDIV_HI(inno->pll.fbdiv));
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phy_update_bits(inno, REGISTER_PART_ANALOG, 0x04,
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REG_FBDIV_LO_MASK, REG_FBDIV_LO(inno->pll.fbdiv));
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/* Enable PLL and LDO */
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phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
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REG_LDOPD_MASK | REG_PLLPD_MASK,
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REG_LDOPD_POWER_ON | REG_PLLPD_POWER_ON);
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/* Reset analog */
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phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
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REG_SYNCRST_MASK, REG_SYNCRST_RESET);
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udelay(1);
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phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
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REG_SYNCRST_MASK, REG_SYNCRST_NORMAL);
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/* Reset digital */
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phy_update_bits(inno, REGISTER_PART_DIGITAL, 0x00,
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REG_DIG_RSTN_MASK, REG_DIG_RSTN_RESET);
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udelay(1);
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phy_update_bits(inno, REGISTER_PART_DIGITAL, 0x00,
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REG_DIG_RSTN_MASK, REG_DIG_RSTN_NORMAL);
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txbyteclkhs = inno->pll.rate / 8;
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t_txbyteclkhs = div_u64(PSEC_PER_SEC, txbyteclkhs);
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esc_clk_div = DIV_ROUND_UP(txbyteclkhs, 20000000);
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txclkesc = txbyteclkhs / esc_clk_div;
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t_txclkesc = div_u64(PSEC_PER_SEC, txclkesc);
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/*
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* The value of counter for HS Ths-exit
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* Ths-exit = Tpin_txbyteclkhs * value
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*/
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hs_exit = DIV_ROUND_UP(cfg->hs_exit, t_txbyteclkhs);
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/*
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* The value of counter for HS Tclk-post
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* Tclk-post = Tpin_txbyteclkhs * value
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*/
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clk_post = DIV_ROUND_UP(cfg->clk_post, t_txbyteclkhs);
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/*
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* The value of counter for HS Tclk-pre
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* Tclk-pre = Tpin_txbyteclkhs * value
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*/
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clk_pre = DIV_ROUND_UP(cfg->clk_pre, t_txbyteclkhs);
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/*
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* The value of counter for HS Tlpx Time
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* Tlpx = Tpin_txbyteclkhs * (2 + value)
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*/
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lpx = DIV_ROUND_UP(cfg->lpx, t_txbyteclkhs);
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if (lpx >= 2)
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lpx -= 2;
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/*
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* The value of counter for HS Tta-go
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* Tta-go for turnaround
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* Tta-go = Ttxclkesc * value
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*/
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ta_go = DIV_ROUND_UP(cfg->ta_go, t_txclkesc);
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/*
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* The value of counter for HS Tta-sure
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* Tta-sure for turnaround
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* Tta-sure = Ttxclkesc * value
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*/
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ta_sure = DIV_ROUND_UP(cfg->ta_sure, t_txclkesc);
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/*
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* The value of counter for HS Tta-wait
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* Tta-wait for turnaround
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* Tta-wait = Ttxclkesc * value
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*/
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ta_wait = DIV_ROUND_UP(cfg->ta_get, t_txclkesc);
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for (i = 0; i < ARRAY_SIZE(timings); i++)
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if (inno->pll.rate <= timings[i].rate)
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break;
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if (i == ARRAY_SIZE(timings))
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--i;
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hs_prepare = timings[i].hs_prepare;
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hs_trail = timings[i].hs_trail;
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clk_lane_hs_zero = timings[i].clk_lane_hs_zero;
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data_lane_hs_zero = timings[i].data_lane_hs_zero;
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wakeup = 0x3ff;
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for (i = REGISTER_PART_CLOCK_LANE; i <= REGISTER_PART_DATA3_LANE; i++) {
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if (i == REGISTER_PART_CLOCK_LANE)
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hs_zero = clk_lane_hs_zero;
|
|
else
|
|
hs_zero = data_lane_hs_zero;
|
|
|
|
phy_update_bits(inno, i, 0x05, T_LPX_CNT_MASK,
|
|
T_LPX_CNT(lpx));
|
|
phy_update_bits(inno, i, 0x06, T_HS_PREPARE_CNT_MASK,
|
|
T_HS_PREPARE_CNT(hs_prepare));
|
|
phy_update_bits(inno, i, 0x07, T_HS_ZERO_CNT_MASK,
|
|
T_HS_ZERO_CNT(hs_zero));
|
|
phy_update_bits(inno, i, 0x08, T_HS_TRAIL_CNT_MASK,
|
|
T_HS_TRAIL_CNT(hs_trail));
|
|
phy_update_bits(inno, i, 0x09, T_HS_EXIT_CNT_MASK,
|
|
T_HS_EXIT_CNT(hs_exit));
|
|
phy_update_bits(inno, i, 0x0a, T_CLK_POST_CNT_MASK,
|
|
T_CLK_POST_CNT(clk_post));
|
|
phy_update_bits(inno, i, 0x0e, T_CLK_PRE_CNT_MASK,
|
|
T_CLK_PRE_CNT(clk_pre));
|
|
phy_update_bits(inno, i, 0x0c, T_WAKEUP_CNT_HI_MASK,
|
|
T_WAKEUP_CNT_HI(wakeup >> 8));
|
|
phy_update_bits(inno, i, 0x0d, T_WAKEUP_CNT_LO_MASK,
|
|
T_WAKEUP_CNT_LO(wakeup));
|
|
phy_update_bits(inno, i, 0x10, T_TA_GO_CNT_MASK,
|
|
T_TA_GO_CNT(ta_go));
|
|
phy_update_bits(inno, i, 0x11, T_TA_SURE_CNT_MASK,
|
|
T_TA_SURE_CNT(ta_sure));
|
|
phy_update_bits(inno, i, 0x12, T_TA_WAIT_CNT_MASK,
|
|
T_TA_WAIT_CNT(ta_wait));
|
|
}
|
|
|
|
/* Enable all lanes on analog part */
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
|
|
LANE_EN_MASK, LANE_EN_CK | LANE_EN_3 | LANE_EN_2 |
|
|
LANE_EN_1 | LANE_EN_0);
|
|
}
|
|
|
|
static void inno_dsidphy_lvds_mode_enable(struct inno_dsidphy *inno)
|
|
{
|
|
u8 prediv = 2;
|
|
u16 fbdiv = 28;
|
|
|
|
/* Sample clock reverse direction */
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x08,
|
|
SAMPLE_CLOCK_DIRECTION_MASK,
|
|
SAMPLE_CLOCK_DIRECTION_REVERSE);
|
|
|
|
/* Select LVDS mode */
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x03,
|
|
MODE_ENABLE_MASK, LVDS_MODE_ENABLE);
|
|
/* Configure PLL */
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
|
|
REG_PREDIV_MASK, REG_PREDIV(prediv));
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x03,
|
|
REG_FBDIV_HI_MASK, REG_FBDIV_HI(fbdiv));
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x04,
|
|
REG_FBDIV_LO_MASK, REG_FBDIV_LO(fbdiv));
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x08, 0xff, 0xfc);
|
|
/* Enable PLL and Bandgap */
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
|
|
LVDS_PLL_POWER_MASK | LVDS_BANDGAP_POWER_MASK,
|
|
LVDS_PLL_POWER_ON | LVDS_BANDGAP_POWER_ON);
|
|
|
|
msleep(20);
|
|
|
|
/* Reset LVDS digital logic */
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x00,
|
|
LVDS_DIGITAL_INTERNAL_RESET_MASK,
|
|
LVDS_DIGITAL_INTERNAL_RESET_ENABLE);
|
|
udelay(1);
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x00,
|
|
LVDS_DIGITAL_INTERNAL_RESET_MASK,
|
|
LVDS_DIGITAL_INTERNAL_RESET_DISABLE);
|
|
/* Enable LVDS digital logic */
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x01,
|
|
LVDS_DIGITAL_INTERNAL_ENABLE_MASK,
|
|
LVDS_DIGITAL_INTERNAL_ENABLE);
|
|
/* Enable LVDS analog driver */
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
|
|
LVDS_LANE_EN_MASK, LVDS_CLK_LANE_EN |
|
|
LVDS_DATA_LANE0_EN | LVDS_DATA_LANE1_EN |
|
|
LVDS_DATA_LANE2_EN | LVDS_DATA_LANE3_EN);
|
|
}
|
|
|
|
static int inno_dsidphy_power_on(struct phy *phy)
|
|
{
|
|
struct inno_dsidphy *inno = phy_get_drvdata(phy);
|
|
|
|
clk_prepare_enable(inno->pclk_phy);
|
|
clk_prepare_enable(inno->ref_clk);
|
|
pm_runtime_get_sync(inno->dev);
|
|
|
|
/* Bandgap power on */
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
|
|
BANDGAP_POWER_MASK, BANDGAP_POWER_ON);
|
|
/* Enable power work */
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
|
|
POWER_WORK_MASK, POWER_WORK_ENABLE);
|
|
|
|
switch (inno->mode) {
|
|
case PHY_MODE_MIPI_DPHY:
|
|
inno_dsidphy_mipi_mode_enable(inno);
|
|
break;
|
|
case PHY_MODE_LVDS:
|
|
inno_dsidphy_lvds_mode_enable(inno);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inno_dsidphy_power_off(struct phy *phy)
|
|
{
|
|
struct inno_dsidphy *inno = phy_get_drvdata(phy);
|
|
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00, LANE_EN_MASK, 0);
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x01,
|
|
REG_LDOPD_MASK | REG_PLLPD_MASK,
|
|
REG_LDOPD_POWER_DOWN | REG_PLLPD_POWER_DOWN);
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
|
|
POWER_WORK_MASK, POWER_WORK_DISABLE);
|
|
phy_update_bits(inno, REGISTER_PART_ANALOG, 0x00,
|
|
BANDGAP_POWER_MASK, BANDGAP_POWER_DOWN);
|
|
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b, LVDS_LANE_EN_MASK, 0);
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x01,
|
|
LVDS_DIGITAL_INTERNAL_ENABLE_MASK,
|
|
LVDS_DIGITAL_INTERNAL_DISABLE);
|
|
phy_update_bits(inno, REGISTER_PART_LVDS, 0x0b,
|
|
LVDS_PLL_POWER_MASK | LVDS_BANDGAP_POWER_MASK,
|
|
LVDS_PLL_POWER_OFF | LVDS_BANDGAP_POWER_DOWN);
|
|
|
|
pm_runtime_put(inno->dev);
|
|
clk_disable_unprepare(inno->ref_clk);
|
|
clk_disable_unprepare(inno->pclk_phy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inno_dsidphy_set_mode(struct phy *phy, enum phy_mode mode,
|
|
int submode)
|
|
{
|
|
struct inno_dsidphy *inno = phy_get_drvdata(phy);
|
|
|
|
switch (mode) {
|
|
case PHY_MODE_MIPI_DPHY:
|
|
case PHY_MODE_LVDS:
|
|
inno->mode = mode;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inno_dsidphy_configure(struct phy *phy,
|
|
union phy_configure_opts *opts)
|
|
{
|
|
struct inno_dsidphy *inno = phy_get_drvdata(phy);
|
|
int ret;
|
|
|
|
if (inno->mode != PHY_MODE_MIPI_DPHY)
|
|
return -EINVAL;
|
|
|
|
ret = phy_mipi_dphy_config_validate(&opts->mipi_dphy);
|
|
if (ret)
|
|
return ret;
|
|
|
|
memcpy(&inno->dphy_cfg, &opts->mipi_dphy, sizeof(inno->dphy_cfg));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct phy_ops inno_dsidphy_ops = {
|
|
.configure = inno_dsidphy_configure,
|
|
.set_mode = inno_dsidphy_set_mode,
|
|
.power_on = inno_dsidphy_power_on,
|
|
.power_off = inno_dsidphy_power_off,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int inno_dsidphy_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct inno_dsidphy *inno;
|
|
struct phy_provider *phy_provider;
|
|
struct phy *phy;
|
|
int ret;
|
|
|
|
inno = devm_kzalloc(dev, sizeof(*inno), GFP_KERNEL);
|
|
if (!inno)
|
|
return -ENOMEM;
|
|
|
|
inno->dev = dev;
|
|
platform_set_drvdata(pdev, inno);
|
|
|
|
inno->phy_base = devm_platform_ioremap_resource(pdev, 0);
|
|
if (IS_ERR(inno->phy_base))
|
|
return PTR_ERR(inno->phy_base);
|
|
|
|
inno->ref_clk = devm_clk_get(dev, "ref");
|
|
if (IS_ERR(inno->ref_clk)) {
|
|
ret = PTR_ERR(inno->ref_clk);
|
|
dev_err(dev, "failed to get ref clock: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
inno->pclk_phy = devm_clk_get(dev, "pclk");
|
|
if (IS_ERR(inno->pclk_phy)) {
|
|
ret = PTR_ERR(inno->pclk_phy);
|
|
dev_err(dev, "failed to get phy pclk: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
inno->rst = devm_reset_control_get(dev, "apb");
|
|
if (IS_ERR(inno->rst)) {
|
|
ret = PTR_ERR(inno->rst);
|
|
dev_err(dev, "failed to get system reset control: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
phy = devm_phy_create(dev, NULL, &inno_dsidphy_ops);
|
|
if (IS_ERR(phy)) {
|
|
ret = PTR_ERR(phy);
|
|
dev_err(dev, "failed to create phy: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
phy_set_drvdata(phy, inno);
|
|
|
|
phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
|
|
if (IS_ERR(phy_provider)) {
|
|
ret = PTR_ERR(phy_provider);
|
|
dev_err(dev, "failed to register phy provider: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
pm_runtime_enable(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int inno_dsidphy_remove(struct platform_device *pdev)
|
|
{
|
|
struct inno_dsidphy *inno = platform_get_drvdata(pdev);
|
|
|
|
pm_runtime_disable(inno->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id inno_dsidphy_of_match[] = {
|
|
{ .compatible = "rockchip,px30-dsi-dphy", },
|
|
{ .compatible = "rockchip,rk3128-dsi-dphy", },
|
|
{ .compatible = "rockchip,rk3368-dsi-dphy", },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, inno_dsidphy_of_match);
|
|
|
|
static struct platform_driver inno_dsidphy_driver = {
|
|
.driver = {
|
|
.name = "inno-dsidphy",
|
|
.of_match_table = of_match_ptr(inno_dsidphy_of_match),
|
|
},
|
|
.probe = inno_dsidphy_probe,
|
|
.remove = inno_dsidphy_remove,
|
|
};
|
|
module_platform_driver(inno_dsidphy_driver);
|
|
|
|
MODULE_AUTHOR("Wyon Bi <bivvy.bi@rock-chips.com>");
|
|
MODULE_DESCRIPTION("Innosilicon MIPI/LVDS/TTL Video Combo PHY driver");
|
|
MODULE_LICENSE("GPL v2");
|