[03/11] omapdss: HDMI: create a PHY library

Message ID	1379401597-27222-4-git-send-email-archit@ti.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-omap-owner@kernel.org> From: Archit Taneja <archit@ti.com> To: <tomi.valkeinen@ti.com> CC: <linux-omap@vger.kernel.org>, <linux-fbdev@vger.kernel.org>, Archit Taneja <archit@ti.com> Subject: [PATCH 03/11] omapdss: HDMI: create a PHY library Date: Tue, 17 Sep 2013 12:36:29 +0530 Message-ID: <1379401597-27222-4-git-send-email-archit@ti.com> In-Reply-To: <1379401597-27222-1-git-send-email-archit@ti.com> References: <1379401597-27222-1-git-send-email-archit@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-omap-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/video/omap2/dss/Makefile b/drivers/video/omap2/dss/Makefile index 5ea65d3..d88e938 100644 --- a/drivers/video/omap2/dss/Makefile +++ b/drivers/video/omap2/dss/Makefile @@ -10,5 +10,6 @@ omapdss-$(CONFIG_OMAP2_DSS_RFBI) += rfbi.o omapdss-$(CONFIG_OMAP2_DSS_VENC) += venc.o omapdss-$(CONFIG_OMAP2_DSS_SDI) += sdi.o omapdss-$(CONFIG_OMAP2_DSS_DSI) += dsi.o -omapdss-$(CONFIG_OMAP4_DSS_HDMI) += hdmi.o hdmi_wp.o hdmi_pll.o ti_hdmi_4xxx_ip.o +omapdss-$(CONFIG_OMAP4_DSS_HDMI) += hdmi.o hdmi_wp.o hdmi_pll.o hdmi_phy.o \ + ti_hdmi_4xxx_ip.o ccflags-$(CONFIG_OMAP2_DSS_DEBUG) += -DDEBUG diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c index 9ee92e9..2777eb6 100644 --- a/drivers/video/omap2/dss/dss_features.c +++ b/drivers/video/omap2/dss/dss_features.c @@ -794,11 +794,8 @@ static const struct omap_dss_features omap5_dss_features = { static const struct ti_hdmi_ip_ops omap4_hdmi_functions = { .video_configure = ti_hdmi_4xxx_basic_configure, - .phy_enable = ti_hdmi_4xxx_phy_enable, - .phy_disable = ti_hdmi_4xxx_phy_disable, .read_edid = ti_hdmi_4xxx_read_edid, .dump_core = ti_hdmi_4xxx_core_dump, - .dump_phy = ti_hdmi_4xxx_phy_dump, #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) .audio_start = ti_hdmi_4xxx_audio_start, .audio_stop = ti_hdmi_4xxx_audio_stop, diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c index f6a2eba..f7e2ac6 100644 --- a/drivers/video/omap2/dss/hdmi.c +++ b/drivers/video/omap2/dss/hdmi.c @@ -42,7 +42,6 @@ #define HDMI_CORE_SYS 0x400 #define HDMI_CORE_AV 0x900 -#define HDMI_PHY 0x300 /* HDMI EDID Length move this */ #define HDMI_EDID_MAX_LENGTH 256 @@ -487,7 +486,8 @@ static int hdmi_power_on_full(struct omap_dss_device *dssdev) goto err_pll_enable; } - r = hdmi.ip_data.ops->phy_enable(&hdmi.ip_data); + r = hdmi_phy_enable(&hdmi.ip_data.phy, &hdmi.ip_data.wp, + &hdmi.ip_data.cfg); if (r) { DSSDBG("Failed to start PHY\n"); goto err_phy_enable; @@ -514,7 +514,7 @@ static int hdmi_power_on_full(struct omap_dss_device *dssdev) err_mgr_enable: hdmi_wp_video_stop(&hdmi.ip_data.wp); err_vid_enable: - hdmi.ip_data.ops->phy_disable(&hdmi.ip_data); + hdmi_phy_disable(&hdmi.ip_data.phy, &hdmi.ip_data.wp); err_phy_enable: hdmi_pll_disable(&hdmi.ip_data.pll, &hdmi.ip_data.wp); err_pll_enable: @@ -529,7 +529,7 @@ static void hdmi_power_off_full(struct omap_dss_device *dssdev) dss_mgr_disable(mgr); hdmi_wp_video_stop(&hdmi.ip_data.wp); - hdmi.ip_data.ops->phy_disable(&hdmi.ip_data); + hdmi_phy_disable(&hdmi.ip_data.phy, &hdmi.ip_data.wp); hdmi_pll_disable(&hdmi.ip_data.pll, &hdmi.ip_data.wp); hdmi_power_off_core(dssdev); @@ -593,7 +593,7 @@ static void hdmi_dump_regs(struct seq_file *s) hdmi_wp_dump(&hdmi.ip_data.wp, s); hdmi_pll_dump(&hdmi.ip_data.pll, s); - hdmi.ip_data.ops->dump_phy(&hdmi.ip_data, s); + hdmi_phy_dump(&hdmi.ip_data.phy, s); hdmi.ip_data.ops->dump_core(&hdmi.ip_data, s); hdmi_runtime_put(); @@ -1049,11 +1049,9 @@ static int omapdss_hdmihw_probe(struct platform_device *pdev) if (r) return r; - hdmi.ip_data.irq = platform_get_irq(pdev, 0); - if (hdmi.ip_data.irq < 0) { - DSSERR("platform_get_irq failed\n"); - return -ENODEV; - } + r = hdmi_phy_init(pdev, &hdmi.ip_data.phy); + if (r) + return r; r = hdmi_get_clocks(pdev); if (r) { @@ -1065,7 +1063,6 @@ static int omapdss_hdmihw_probe(struct platform_device *pdev) hdmi.ip_data.core_sys_offset = HDMI_CORE_SYS; hdmi.ip_data.core_av_offset = HDMI_CORE_AV; - hdmi.ip_data.phy_offset = HDMI_PHY; hdmi_init_output(pdev); diff --git a/drivers/video/omap2/dss/hdmi_phy.c b/drivers/video/omap2/dss/hdmi_phy.c new file mode 100644 index 0000000..cacd3c4 --- /dev/null +++ b/drivers/video/omap2/dss/hdmi_phy.c @@ -0,0 +1,176 @@ +/* + * HDMI PHY + * + * Copyright (C) 2013 Texas Instruments Incorporated + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/platform_device.h> +#include <video/omapdss.h> + +#include "dss.h" +#include "ti_hdmi.h" +#include "ti_hdmi_4xxx_ip.h" + +#define HDMI_IRQ_LINK_CONNECT (1 << 25) +#define HDMI_IRQ_LINK_DISCONNECT (1 << 26) + +static inline void hdmi_write_reg(void __iomem *base_addr, const u16 idx, + u32 val) +{ + __raw_writel(val, base_addr + idx); +} + +static inline u32 hdmi_read_reg(void __iomem *base_addr, const u16 idx) +{ + return __raw_readl(base_addr + idx); +} + +#define REG_FLD_MOD(base, idx, val, start, end) \ + hdmi_write_reg(base, idx, FLD_MOD(hdmi_read_reg(base, idx),\ + val, start, end)) +#define REG_GET(base, idx, start, end) \ + FLD_GET(hdmi_read_reg(base, idx), start, end) + +static inline int hdmi_wait_for_bit_change(void __iomem *base_addr, + const u16 idx, int b2, int b1, u32 val) +{ + u32 t = 0; + while (val != REG_GET(base_addr, idx, b2, b1)) { + udelay(1); + if (t++ > 10000) + return !val; + } + return val; +} + +void hdmi_phy_dump(struct hdmi_phy_data *phy, struct seq_file *s) +{ +#define DUMPPHY(r) seq_printf(s, "%-35s %08x\n", #r,\ + hdmi_read_reg(phy->base, r)) + + DUMPPHY(HDMI_TXPHY_TX_CTRL); + DUMPPHY(HDMI_TXPHY_DIGITAL_CTRL); + DUMPPHY(HDMI_TXPHY_POWER_CTRL); + DUMPPHY(HDMI_TXPHY_PAD_CFG_CTRL); +} + +static irqreturn_t hdmi_irq_handler(int irq, void *data) +{ + struct hdmi_wp_data *wp = data; + u32 irqstatus; + + irqstatus = hdmi_wp_get_irqstatus(wp); + hdmi_wp_set_irqstatus(wp, irqstatus); + + if ((irqstatus & HDMI_IRQ_LINK_CONNECT) && + irqstatus & HDMI_IRQ_LINK_DISCONNECT) { + /* + * If we get both connect and disconnect interrupts at the same + * time, turn off the PHY, clear interrupts, and restart, which + * raises connect interrupt if a cable is connected, or nothing + * if cable is not connected. + */ + hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF); + + hdmi_wp_set_irqstatus(wp, HDMI_IRQ_LINK_CONNECT | + HDMI_IRQ_LINK_DISCONNECT); + + hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); + } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) { + hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_TXON); + } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) { + hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); + } + + return IRQ_HANDLED; +} + +int hdmi_phy_enable(struct hdmi_phy_data *phy, struct hdmi_wp_data *wp, + struct hdmi_config *cfg) +{ + u16 r = 0; + u32 irqstatus; + + hdmi_wp_clear_irqenable(wp, 0xffffffff); + + irqstatus = hdmi_wp_get_irqstatus(wp); + hdmi_wp_set_irqstatus(wp, irqstatus); + + r = hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON); + if (r) + return r; + + /* + * Read address 0 in order to get the SCP reset done completed + * Dummy access performed to make sure reset is done + */ + hdmi_read_reg(phy->base, HDMI_TXPHY_TX_CTRL); + + /* + * Write to phy address 0 to configure the clock + * use HFBITCLK write HDMI_TXPHY_TX_CONTROL_FREQOUT field + */ + REG_FLD_MOD(phy->base, HDMI_TXPHY_TX_CTRL, 0x1, 31, 30); + + /* Write to phy address 1 to start HDMI line (TXVALID and TMDSCLKEN) */ + hdmi_write_reg(phy->base, HDMI_TXPHY_DIGITAL_CTRL, 0xF0000000); + + /* Setup max LDO voltage */ + REG_FLD_MOD(phy->base, HDMI_TXPHY_POWER_CTRL, 0xB, 3, 0); + + /* Write to phy address 3 to change the polarity control */ + REG_FLD_MOD(phy->base, HDMI_TXPHY_PAD_CFG_CTRL, 0x1, 27, 27); + + r = request_threaded_irq(phy->irq, NULL, hdmi_irq_handler, + IRQF_ONESHOT, "OMAP HDMI", wp); + if (r) { + DSSERR("HDMI IRQ request failed\n"); + hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF); + return r; + } + + hdmi_wp_set_irqenable(wp, + HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); + + return 0; +} + +void hdmi_phy_disable(struct hdmi_phy_data *phy, struct hdmi_wp_data *wp) +{ + free_irq(phy->irq, wp); + + hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_OFF); +} + +int hdmi_phy_init(struct platform_device *pdev, struct hdmi_phy_data *phy) +{ + struct resource *res; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hdmi_txphy"); + if (!res) { + DSSERR("can't get PLL CTRL IORESOURCE_MEM HDMI\n"); + return -EINVAL; + } + + phy->base = devm_request_and_ioremap(&pdev->dev, res); + if (!phy->base) { + DSSERR("can't ioremap PLL ctrl\n"); + return -ENOMEM; + } + + phy->irq = platform_get_irq(pdev, 0); + if (phy->irq < 0) { + DSSERR("platform_get_irq failed\n"); + return -ENODEV; + } + + return 0; +} diff --git a/drivers/video/omap2/dss/ti_hdmi.h b/drivers/video/omap2/dss/ti_hdmi.h index 62a83c7..716bac4 100644 --- a/drivers/video/omap2/dss/ti_hdmi.h +++ b/drivers/video/omap2/dss/ti_hdmi.h @@ -149,16 +149,10 @@ struct ti_hdmi_ip_ops { void (*video_configure)(struct hdmi_ip_data *ip_data); - int (*phy_enable)(struct hdmi_ip_data *ip_data); - - void (*phy_disable)(struct hdmi_ip_data *ip_data); - int (*read_edid)(struct hdmi_ip_data *ip_data, u8 *edid, int len); void (*dump_core)(struct hdmi_ip_data *ip_data, struct seq_file *s); - void (*dump_phy)(struct hdmi_ip_data *ip_data, struct seq_file *s); - #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) int (*audio_start)(struct hdmi_ip_data *ip_data); @@ -223,14 +217,20 @@ struct hdmi_pll_data { struct hdmi_pll_info info; }; +struct hdmi_phy_data { + void __iomem *base; + + int irq; +}; + struct hdmi_ip_data { struct hdmi_wp_data wp; struct hdmi_pll_data pll; + struct hdmi_phy_data phy; unsigned long core_sys_offset; unsigned long core_av_offset; - unsigned long phy_offset; - int irq; + const struct ti_hdmi_ip_ops *ops; struct hdmi_config cfg; struct hdmi_core_infoframe_avi avi_cfg; @@ -266,12 +266,16 @@ void hdmi_pll_dump(struct hdmi_pll_data *pll, struct seq_file *s); void hdmi_pll_compute(struct hdmi_pll_data *pll, unsigned long clkin, int phy); int hdmi_pll_init(struct platform_device *pdev, struct hdmi_pll_data *pll); -int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data); -void ti_hdmi_4xxx_phy_disable(struct hdmi_ip_data *ip_data); +/* HDMI PHY funcs */ +int hdmi_phy_enable(struct hdmi_phy_data *phy, struct hdmi_wp_data *wp, + struct hdmi_config *cfg); +void hdmi_phy_disable(struct hdmi_phy_data *phy, struct hdmi_wp_data *wp); +void hdmi_phy_dump(struct hdmi_phy_data *phy, struct seq_file *s); +int hdmi_phy_init(struct platform_device *pdev, struct hdmi_phy_data *phy); + int ti_hdmi_4xxx_read_edid(struct hdmi_ip_data *ip_data, u8 *edid, int len); void ti_hdmi_4xxx_basic_configure(struct hdmi_ip_data *ip_data); void ti_hdmi_4xxx_core_dump(struct hdmi_ip_data *ip_data, struct seq_file *s); -void ti_hdmi_4xxx_phy_dump(struct hdmi_ip_data *ip_data, struct seq_file *s); #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) int hdmi_compute_acr(u32 sample_freq, u32 *n, u32 *cts); int hdmi_wp_audio_enable(struct hdmi_wp_data *wp, bool enable); diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c index 8cfb54b..c705aa1 100644 --- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c +++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c @@ -37,9 +37,6 @@ #include "dss.h" #include "dss_features.h" -#define HDMI_IRQ_LINK_CONNECT (1 << 25) -#define HDMI_IRQ_LINK_DISCONNECT (1 << 26) - static inline void hdmi_write_reg(void __iomem *base_addr, const u16 idx, u32 val) { @@ -70,11 +67,6 @@ static inline int hdmi_wait_for_bit_change(void __iomem *base_addr, return val; } -static inline void __iomem *hdmi_phy_base(struct hdmi_ip_data *ip_data) -{ - return ip_data->wp.base + ip_data->phy_offset; -} - static inline void __iomem *hdmi_av_base(struct hdmi_ip_data *ip_data) { return ip_data->wp.base + ip_data->core_av_offset; @@ -85,94 +77,6 @@ static inline void __iomem *hdmi_core_sys_base(struct hdmi_ip_data *ip_data) return ip_data->wp.base + ip_data->core_sys_offset; } -static irqreturn_t hdmi_irq_handler(int irq, void *data) -{ - struct hdmi_ip_data *ip_data = data; - u32 irqstatus; - - irqstatus = hdmi_wp_get_irqstatus(&ip_data->wp); - hdmi_wp_set_irqstatus(&ip_data->wp, irqstatus); - - if ((irqstatus & HDMI_IRQ_LINK_CONNECT) && - irqstatus & HDMI_IRQ_LINK_DISCONNECT) { - /* - * If we get both connect and disconnect interrupts at the same - * time, turn off the PHY, clear interrupts, and restart, which - * raises connect interrupt if a cable is connected, or nothing - * if cable is not connected. - */ - hdmi_wp_set_phy_pwr(&ip_data->wp, HDMI_PHYPWRCMD_OFF); - - hdmi_wp_set_irqstatus(&ip_data->wp, HDMI_IRQ_LINK_CONNECT | - HDMI_IRQ_LINK_DISCONNECT); - - hdmi_wp_set_phy_pwr(&ip_data->wp, HDMI_PHYPWRCMD_LDOON); - } else if (irqstatus & HDMI_IRQ_LINK_CONNECT) { - hdmi_wp_set_phy_pwr(&ip_data->wp, HDMI_PHYPWRCMD_TXON); - } else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) { - hdmi_wp_set_phy_pwr(&ip_data->wp, HDMI_PHYPWRCMD_LDOON); - } - - return IRQ_HANDLED; -} - -int ti_hdmi_4xxx_phy_enable(struct hdmi_ip_data *ip_data) -{ - u16 r = 0; - u32 irqstatus; - void __iomem *phy_base = hdmi_phy_base(ip_data); - - hdmi_wp_clear_irqenable(&ip_data->wp, 0xffffffff); - - irqstatus = hdmi_wp_get_irqstatus(&ip_data->wp); - hdmi_wp_set_irqstatus(&ip_data->wp, irqstatus); - - r = hdmi_wp_set_phy_pwr(&ip_data->wp, HDMI_PHYPWRCMD_LDOON); - if (r) - return r; - - /* - * Read address 0 in order to get the SCP reset done completed - * Dummy access performed to make sure reset is done - */ - hdmi_read_reg(phy_base, HDMI_TXPHY_TX_CTRL); - - /* - * Write to phy address 0 to configure the clock - * use HFBITCLK write HDMI_TXPHY_TX_CONTROL_FREQOUT field - */ - REG_FLD_MOD(phy_base, HDMI_TXPHY_TX_CTRL, 0x1, 31, 30); - - /* Write to phy address 1 to start HDMI line (TXVALID and TMDSCLKEN) */ - hdmi_write_reg(phy_base, HDMI_TXPHY_DIGITAL_CTRL, 0xF0000000); - - /* Setup max LDO voltage */ - REG_FLD_MOD(phy_base, HDMI_TXPHY_POWER_CTRL, 0xB, 3, 0); - - /* Write to phy address 3 to change the polarity control */ - REG_FLD_MOD(phy_base, HDMI_TXPHY_PAD_CFG_CTRL, 0x1, 27, 27); - - r = request_threaded_irq(ip_data->irq, NULL, hdmi_irq_handler, - IRQF_ONESHOT, "OMAP HDMI", ip_data); - if (r) { - DSSERR("HDMI IRQ request failed\n"); - hdmi_wp_set_phy_pwr(&ip_data->wp, HDMI_PHYPWRCMD_OFF); - return r; - } - - hdmi_wp_set_irqenable(&ip_data->wp, - HDMI_IRQ_LINK_CONNECT | HDMI_IRQ_LINK_DISCONNECT); - - return 0; -} - -void ti_hdmi_4xxx_phy_disable(struct hdmi_ip_data *ip_data) -{ - free_irq(ip_data->irq, ip_data); - - hdmi_wp_set_phy_pwr(&ip_data->wp, HDMI_PHYPWRCMD_OFF); -} - static int hdmi_core_ddc_init(struct hdmi_ip_data *ip_data) { void __iomem *base = hdmi_core_sys_base(ip_data); @@ -524,8 +428,6 @@ static void hdmi_core_av_packet_config(struct hdmi_ip_data *ip_data, (repeat_cfg.generic_pkt_repeat)); } - - void ti_hdmi_4xxx_basic_configure(struct hdmi_ip_data *ip_data) { /* HDMI */ @@ -769,17 +671,6 @@ void ti_hdmi_4xxx_core_dump(struct hdmi_ip_data *ip_data, struct seq_file *s) DUMPCOREAV(HDMI_CORE_AV_CEC_ADDR_ID); } -void ti_hdmi_4xxx_phy_dump(struct hdmi_ip_data *ip_data, struct seq_file *s) -{ -#define DUMPPHY(r) seq_printf(s, "%-35s %08x\n", #r,\ - hdmi_read_reg(hdmi_phy_base(ip_data), r)) - - DUMPPHY(HDMI_TXPHY_TX_CTRL); - DUMPPHY(HDMI_TXPHY_DIGITAL_CTRL); - DUMPPHY(HDMI_TXPHY_POWER_CTRL); - DUMPPHY(HDMI_TXPHY_PAD_CFG_CTRL); -} - #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO) static void ti_hdmi_4xxx_core_audio_config(struct hdmi_ip_data *ip_data, struct hdmi_core_audio_config *cfg)

[03/11] omapdss: HDMI: create a PHY library

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