415 lines
11 KiB
C
415 lines
11 KiB
C
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/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/time.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <mach/msm_iomap.h>
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#include <mach/clk.h>
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#include <asm/system.h>
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#include <asm/mach-types.h>
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#include <linux/semaphore.h>
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#include <linux/uaccess.h>
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#include <linux/clk.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include "msm_fb.h"
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#include "mdp4.h"
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#define LVDS_PIXEL_MAP_PATTERN_2 2
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static int lvds_probe(struct platform_device *pdev);
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static int lvds_remove(struct platform_device *pdev);
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static int lvds_off(struct platform_device *pdev);
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static int lvds_on(struct platform_device *pdev);
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static struct platform_device *pdev_list[MSM_FB_MAX_DEV_LIST];
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static int pdev_list_cnt;
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static struct clk *lvds_clk;
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static struct platform_driver lvds_driver = {
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.probe = lvds_probe,
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.remove = lvds_remove,
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.suspend = NULL,
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.resume = NULL,
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.shutdown = NULL,
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.driver = {
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.name = "lvds",
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},
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};
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static struct lcdc_platform_data *lvds_pdata;
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static void lvds_init(struct msm_fb_data_type *mfd)
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{
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unsigned int lvds_intf = 0, lvds_phy_cfg0 = 0;
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MDP_OUTP(MDP_BASE + 0xc2034, 0x33);
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usleep(1000);
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/* LVDS PHY PLL configuration */
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if (mfd->panel_info.clk_rate == 74250000) {
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MDP_OUTP(MDP_BASE + 0xc3000, 0x08);
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MDP_OUTP(MDP_BASE + 0xc3004, 0x4c);
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MDP_OUTP(MDP_BASE + 0xc3008, 0x30);
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MDP_OUTP(MDP_BASE + 0xc300c, 0xc3);
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MDP_OUTP(MDP_BASE + 0xc3014, 0x10);
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MDP_OUTP(MDP_BASE + 0xc3018, 0x04);
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MDP_OUTP(MDP_BASE + 0xc301c, 0x62);
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MDP_OUTP(MDP_BASE + 0xc3020, 0x41);
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MDP_OUTP(MDP_BASE + 0xc3024, 0x0d);
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MDP_OUTP(MDP_BASE + 0xc3028, 0x07);
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MDP_OUTP(MDP_BASE + 0xc302c, 0x00);
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MDP_OUTP(MDP_BASE + 0xc3030, 0x1c);
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MDP_OUTP(MDP_BASE + 0xc3034, 0x01);
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MDP_OUTP(MDP_BASE + 0xc3038, 0x00);
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MDP_OUTP(MDP_BASE + 0xc3040, 0xC0);
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MDP_OUTP(MDP_BASE + 0xc3044, 0x00);
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MDP_OUTP(MDP_BASE + 0xc3048, 0x30);
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MDP_OUTP(MDP_BASE + 0xc304c, 0x00);
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MDP_OUTP(MDP_BASE + 0xc3000, 0x11);
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MDP_OUTP(MDP_BASE + 0xc3064, 0x05);
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MDP_OUTP(MDP_BASE + 0xc3050, 0x20);
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} else {
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MDP_OUTP(MDP_BASE + 0xc3004, 0x8f);
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MDP_OUTP(MDP_BASE + 0xc3008, 0x30);
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MDP_OUTP(MDP_BASE + 0xc300c, 0xc6);
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MDP_OUTP(MDP_BASE + 0xc3014, 0x10);
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MDP_OUTP(MDP_BASE + 0xc3018, 0x07);
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MDP_OUTP(MDP_BASE + 0xc301c, 0x62);
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MDP_OUTP(MDP_BASE + 0xc3020, 0x41);
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MDP_OUTP(MDP_BASE + 0xc3024, 0x0d);
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}
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MDP_OUTP(MDP_BASE + 0xc3000, 0x01);
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/* Wait until LVDS PLL is locked and ready */
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while (!readl_relaxed(MDP_BASE + 0xc3080))
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cpu_relax();
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writel_relaxed(0x00, mmss_cc_base + 0x0264);
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writel_relaxed(0x00, mmss_cc_base + 0x0094);
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writel_relaxed(0x02, mmss_cc_base + 0x00E4);
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writel_relaxed((0x80 | readl_relaxed(mmss_cc_base + 0x00E4)),
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mmss_cc_base + 0x00E4);
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usleep(1000);
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writel_relaxed((~0x80 & readl_relaxed(mmss_cc_base + 0x00E4)),
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mmss_cc_base + 0x00E4);
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writel_relaxed(0x05, mmss_cc_base + 0x0094);
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writel_relaxed(0x02, mmss_cc_base + 0x0264);
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/* Wait until LVDS pixel clock output is enabled */
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mb();
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if (mfd->panel_info.bpp == 24) {
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if (lvds_pdata &&
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lvds_pdata->lvds_pixel_remap &&
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lvds_pdata->lvds_pixel_remap()) {
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if (lvds_pdata->lvds_pixel_remap() ==
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LVDS_PIXEL_MAP_PATTERN_2) {
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2014, 0x070A1B1B);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2018, 0x00040506);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc201c, 0x12131B1B);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2020, 0x000B0C0D);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2024, 0x191A1B1B);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2028, 0x00141518);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D3_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc202c, 0x171B1B1B);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D3_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2030, 0x000e0f16);
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} else {
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2014, 0x05080001);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2018, 0x00020304);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc201c, 0x1011090a);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2020, 0x000b0c0d);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2024, 0x191a1213);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2028, 0x00141518);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D3_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc202c, 0x171b0607);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D3_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2030, 0x000e0f16);
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}
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} else {
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2014, 0x03040508);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2018, 0x00000102);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc201c, 0x0c0d1011);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2020, 0x00090a0b);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2024, 0x1518191a);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2028, 0x00121314);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D3_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc202c, 0x0f16171b);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D3_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2030, 0x0006070e);
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}
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if (mfd->panel_info.lvds.channel_mode ==
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LVDS_DUAL_CHANNEL_MODE) {
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lvds_intf = 0x0003ff80;
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lvds_phy_cfg0 = BIT(6) | BIT(7);
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if (mfd->panel_info.lvds.channel_swap)
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lvds_intf |= BIT(4);
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} else {
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lvds_intf = 0x00010f84;
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lvds_phy_cfg0 = BIT(6);
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}
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} else if (mfd->panel_info.bpp == 18) {
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2014, 0x03040508);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D0_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2018, 0x00000102);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc201c, 0x0c0d1011);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D1_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2020, 0x00090a0b);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_3_TO_0 */
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MDP_OUTP(MDP_BASE + 0xc2024, 0x1518191a);
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/* MDP_LCDC_LVDS_MUX_CTL_FOR_D2_6_TO_4 */
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MDP_OUTP(MDP_BASE + 0xc2028, 0x00121314);
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if (mfd->panel_info.lvds.channel_mode ==
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LVDS_DUAL_CHANNEL_MODE) {
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lvds_intf = 0x00037788;
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lvds_phy_cfg0 = BIT(6) | BIT(7);
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if (mfd->panel_info.lvds.channel_swap)
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lvds_intf |= BIT(4);
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} else {
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lvds_intf = 0x0001078c;
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lvds_phy_cfg0 = BIT(6);
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}
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} else {
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BUG();
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}
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/* MDP_LVDSPHY_CFG0 */
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MDP_OUTP(MDP_BASE + 0xc3100, lvds_phy_cfg0);
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/* MDP_LCDC_LVDS_INTF_CTL */
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MDP_OUTP(MDP_BASE + 0xc2000, lvds_intf);
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MDP_OUTP(MDP_BASE + 0xc3108, 0x30);
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lvds_phy_cfg0 |= BIT(4);
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/* Wait until LVDS PHY registers are configured */
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mb();
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usleep(1);
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/* MDP_LVDSPHY_CFG0, enable serialization */
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MDP_OUTP(MDP_BASE + 0xc3100, lvds_phy_cfg0);
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}
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static int lvds_off(struct platform_device *pdev)
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{
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int ret = 0;
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struct msm_fb_data_type *mfd;
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mfd = platform_get_drvdata(pdev);
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ret = panel_next_off(pdev);
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if (lvds_clk)
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clk_disable_unprepare(lvds_clk);
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MDP_OUTP(MDP_BASE + 0xc3100, 0x0);
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MDP_OUTP(MDP_BASE + 0xc3000, 0x0);
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usleep(10);
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if (lvds_pdata && lvds_pdata->lcdc_power_save)
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lvds_pdata->lcdc_power_save(0);
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if (lvds_pdata && lvds_pdata->lcdc_gpio_config)
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ret = lvds_pdata->lcdc_gpio_config(0);
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return ret;
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}
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static int lvds_on(struct platform_device *pdev)
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{
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int ret = 0;
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struct msm_fb_data_type *mfd;
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unsigned long panel_pixclock_freq = 0;
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mfd = platform_get_drvdata(pdev);
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if (lvds_pdata && lvds_pdata->lcdc_get_clk)
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panel_pixclock_freq = lvds_pdata->lcdc_get_clk();
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if (!panel_pixclock_freq)
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panel_pixclock_freq = mfd->fbi->var.pixclock;
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mfd = platform_get_drvdata(pdev);
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if (lvds_clk) {
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mfd->fbi->var.pixclock = clk_round_rate(lvds_clk,
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mfd->fbi->var.pixclock);
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ret = clk_set_rate(lvds_clk, mfd->fbi->var.pixclock);
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if (ret) {
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pr_err("%s: Can't set lvds clock to rate %u\n",
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__func__, mfd->fbi->var.pixclock);
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goto out;
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}
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clk_prepare_enable(lvds_clk);
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}
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if (lvds_pdata && lvds_pdata->lcdc_power_save)
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lvds_pdata->lcdc_power_save(1);
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if (lvds_pdata && lvds_pdata->lcdc_gpio_config)
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ret = lvds_pdata->lcdc_gpio_config(1);
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lvds_init(mfd);
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ret = panel_next_on(pdev);
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out:
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return ret;
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}
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static int lvds_probe(struct platform_device *pdev)
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{
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struct msm_fb_data_type *mfd;
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struct fb_info *fbi;
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struct platform_device *mdp_dev = NULL;
|
||
|
|
struct msm_fb_panel_data *pdata = NULL;
|
||
|
|
int rc;
|
||
|
|
|
||
|
|
if (pdev->id == 0) {
|
||
|
|
lvds_pdata = pdev->dev.platform_data;
|
||
|
|
|
||
|
|
lvds_clk = clk_get(&pdev->dev, "lvds_clk");
|
||
|
|
if (IS_ERR_OR_NULL(lvds_clk)) {
|
||
|
|
pr_err("Couldnt find lvds_clk\n");
|
||
|
|
lvds_clk = NULL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
mfd = platform_get_drvdata(pdev);
|
||
|
|
|
||
|
|
if (!mfd)
|
||
|
|
return -ENODEV;
|
||
|
|
|
||
|
|
if (mfd->key != MFD_KEY)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
if (pdev_list_cnt >= MSM_FB_MAX_DEV_LIST)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
mdp_dev = platform_device_alloc("mdp", pdev->id);
|
||
|
|
if (!mdp_dev)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* link to the latest pdev
|
||
|
|
*/
|
||
|
|
mfd->pdev = mdp_dev;
|
||
|
|
mfd->dest = DISPLAY_LCDC;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* alloc panel device data
|
||
|
|
*/
|
||
|
|
if (platform_device_add_data
|
||
|
|
(mdp_dev, pdev->dev.platform_data,
|
||
|
|
sizeof(struct msm_fb_panel_data))) {
|
||
|
|
pr_err("lvds_probe: platform_device_add_data failed!\n");
|
||
|
|
platform_device_put(mdp_dev);
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* data chain
|
||
|
|
*/
|
||
|
|
pdata = (struct msm_fb_panel_data *)mdp_dev->dev.platform_data;
|
||
|
|
pdata->on = lvds_on;
|
||
|
|
pdata->off = lvds_off;
|
||
|
|
pdata->next = pdev;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* get/set panel specific fb info
|
||
|
|
*/
|
||
|
|
mfd->panel_info = pdata->panel_info;
|
||
|
|
|
||
|
|
if (mfd->index == 0)
|
||
|
|
mfd->fb_imgType = MSMFB_DEFAULT_TYPE;
|
||
|
|
else
|
||
|
|
mfd->fb_imgType = MDP_RGB_565;
|
||
|
|
|
||
|
|
fbi = mfd->fbi;
|
||
|
|
if (lvds_clk) {
|
||
|
|
fbi->var.pixclock = clk_round_rate(lvds_clk,
|
||
|
|
mfd->panel_info.clk_rate);
|
||
|
|
}
|
||
|
|
|
||
|
|
fbi->var.left_margin = mfd->panel_info.lcdc.h_back_porch;
|
||
|
|
fbi->var.right_margin = mfd->panel_info.lcdc.h_front_porch;
|
||
|
|
fbi->var.upper_margin = mfd->panel_info.lcdc.v_back_porch;
|
||
|
|
fbi->var.lower_margin = mfd->panel_info.lcdc.v_front_porch;
|
||
|
|
fbi->var.hsync_len = mfd->panel_info.lcdc.h_pulse_width;
|
||
|
|
fbi->var.vsync_len = mfd->panel_info.lcdc.v_pulse_width;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* set driver data
|
||
|
|
*/
|
||
|
|
platform_set_drvdata(mdp_dev, mfd);
|
||
|
|
/*
|
||
|
|
* register in mdp driver
|
||
|
|
*/
|
||
|
|
rc = platform_device_add(mdp_dev);
|
||
|
|
if (rc)
|
||
|
|
goto lvds_probe_err;
|
||
|
|
|
||
|
|
pdev_list[pdev_list_cnt++] = pdev;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
lvds_probe_err:
|
||
|
|
platform_device_put(mdp_dev);
|
||
|
|
return rc;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int lvds_remove(struct platform_device *pdev)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int lvds_register_driver(void)
|
||
|
|
{
|
||
|
|
return platform_driver_register(&lvds_driver);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __init lvds_driver_init(void)
|
||
|
|
{
|
||
|
|
return lvds_register_driver();
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(lvds_driver_init);
|