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omapdrm changes for 4.15

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* OMAP4 HDMI CEC support
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Merge tag 'omapdrm-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-next

omapdrm changes for 4.15

* OMAP4 HDMI CEC support

* tag 'omapdrm-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  omapdrm: omapdss_hdmi_ops: add lost_hotplug op
  omapdrm: hdmi4: hook up the HDMI CEC support
  omapdrm: hdmi4_cec: add OMAP4 HDMI CEC support
  omapdrm: hdmi4: refcount hdmi_power_on/off_core
  omapdrm: hdmi4: move hdmi4_core_powerdown_disable to hdmi_power_on_core()
  omapdrm: hdmi4: prepare irq handling for HDMI CEC support
  omapdrm: hdmi4: make low-level functions available
  omapdrm: hdmi.h: extend hdmi_core_data with CEC fields
  omapdrm: encoder-tpd12s015: keep ls_oe_gpio high
This commit is contained in:
Dave Airlie 2017-10-13 17:33:07 +10:00
commit 972805c137
11 changed files with 522 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/omapdrm/displays/connector-hdmi.c
View File

@ -165,11 +165,15 @@ static bool hdmic_detect(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct omap_dss_device *in = ddata->in;
bool connected;
if (gpio_is_valid(ddata->hpd_gpio))
return gpio_get_value_cansleep(ddata->hpd_gpio);
connected = gpio_get_value_cansleep(ddata->hpd_gpio);
else
return in->ops.hdmi->detect(in);
connected = in->ops.hdmi->detect(in);
if (!connected && in->ops.hdmi->lost_hotplug)
in->ops.hdmi->lost_hotplug(in);
return connected;
}
static int hdmic_register_hpd_cb(struct omap_dss_device *dssdev,

18
drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c
View File

@ -51,6 +51,8 @@ static int tpd_connect(struct omap_dss_device *dssdev,
dssdev->dst = dst;
gpiod_set_value_cansleep(ddata->ct_cp_hpd_gpio, 1);
gpiod_set_value_cansleep(ddata->ls_oe_gpio, 1);
/* DC-DC converter needs at max 300us to get to 90% of 5V */
udelay(300);
@ -69,6 +71,7 @@ static void tpd_disconnect(struct omap_dss_device *dssdev,
return;
gpiod_set_value_cansleep(ddata->ct_cp_hpd_gpio, 0);
gpiod_set_value_cansleep(ddata->ls_oe_gpio, 0);
dst->src = NULL;
dssdev->dst = NULL;
@ -146,25 +149,22 @@ static int tpd_read_edid(struct omap_dss_device *dssdev,
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct omap_dss_device *in = ddata->in;
int r;
if (!gpiod_get_value_cansleep(ddata->hpd_gpio))
return -ENODEV;
gpiod_set_value_cansleep(ddata->ls_oe_gpio, 1);
r = in->ops.hdmi->read_edid(in, edid, len);
gpiod_set_value_cansleep(ddata->ls_oe_gpio, 0);
return r;
return in->ops.hdmi->read_edid(in, edid, len);
}
static bool tpd_detect(struct omap_dss_device *dssdev)
{
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct omap_dss_device *in = ddata->in;
bool connected = gpiod_get_value_cansleep(ddata->hpd_gpio);
return gpiod_get_value_cansleep(ddata->hpd_gpio);
if (!connected && in->ops.hdmi->lost_hotplug)
in->ops.hdmi->lost_hotplug(in);
return connected;
}
static int tpd_register_hpd_cb(struct omap_dss_device *dssdev,

8
drivers/gpu/drm/omapdrm/dss/Kconfig
View File

@ -65,6 +65,14 @@ config OMAP4_DSS_HDMI
help
HDMI support for OMAP4 based SoCs.
config OMAP4_DSS_HDMI_CEC
bool "Enable HDMI CEC support for OMAP4"
depends on OMAP4_DSS_HDMI
select CEC_CORE
default y
---help---
When selected the HDMI transmitter will support the CEC feature.
config OMAP5_DSS_HDMI
bool "HDMI support for OMAP5"
default n

1
drivers/gpu/drm/omapdrm/dss/Makefile
View File

@ -14,5 +14,6 @@ omapdss-$(CONFIG_OMAP2_DSS_DSI) += dsi.o
omapdss-$(CONFIG_OMAP2_DSS_HDMI_COMMON) += hdmi_common.o hdmi_wp.o hdmi_pll.o \
hdmi_phy.o
omapdss-$(CONFIG_OMAP4_DSS_HDMI) += hdmi4.o hdmi4_core.o
omapdss-$(CONFIG_OMAP4_DSS_HDMI_CEC) += hdmi4_cec.o
omapdss-$(CONFIG_OMAP5_DSS_HDMI) += hdmi5.o hdmi5_core.o
ccflags-$(CONFIG_OMAP2_DSS_DEBUG) += -DDEBUG

7
drivers/gpu/drm/omapdrm/dss/hdmi.h
View File

@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <linux/hdmi.h>
#include <sound/omap-hdmi-audio.h>
#include <media/cec.h>
#include "omapdss.h"
#include "dss.h"
@ -264,6 +265,10 @@ struct hdmi_core_data {
void __iomem *base;
bool cts_swmode;
bool audio_use_mclk;
struct hdmi_wp_data *wp;
unsigned int core_pwr_cnt;
struct cec_adapter *adap;
};
static inline void hdmi_write_reg(void __iomem *base_addr, const u32 idx,
@ -373,7 +378,7 @@ struct omap_hdmi {
bool audio_configured;
struct omap_dss_audio audio_config;
/* This lock should be taken when booleans bellow are touched. */
/* This lock should be taken when booleans below are touched. */
spinlock_t audio_playing_lock;
bool audio_playing;
bool display_enabled;

62
drivers/gpu/drm/omapdrm/dss/hdmi4.c
View File

@ -36,9 +36,11 @@
#include <linux/of.h>
#include <linux/of_graph.h>
#include <sound/omap-hdmi-audio.h>
#include <media/cec.h>
#include "omapdss.h"
#include "hdmi4_core.h"
#include "hdmi4_cec.h"
#include "dss.h"
#include "hdmi.h"
@ -70,7 +72,8 @@ static void hdmi_runtime_put(void)
static irqreturn_t hdmi_irq_handler(int irq, void *data)
{
struct hdmi_wp_data *wp = data;
struct omap_hdmi *hdmi = data;
struct hdmi_wp_data *wp = &hdmi->wp;
u32 irqstatus;
irqstatus = hdmi_wp_get_irqstatus(wp);
@ -95,6 +98,13 @@ static irqreturn_t hdmi_irq_handler(int irq, void *data)
} else if (irqstatus & HDMI_IRQ_LINK_DISCONNECT) {
hdmi_wp_set_phy_pwr(wp, HDMI_PHYPWRCMD_LDOON);
}
if (irqstatus & HDMI_IRQ_CORE) {
u32 intr4 = hdmi_read_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4);
hdmi_write_reg(hdmi->core.base, HDMI_CORE_SYS_INTR4, intr4);
if (intr4 & 8)
hdmi4_cec_irq(&hdmi->core);
}
return IRQ_HANDLED;
}
@ -123,14 +133,19 @@ static int hdmi_power_on_core(struct omap_dss_device *dssdev)
{
int r;
if (hdmi.core.core_pwr_cnt++)
return 0;
r = regulator_enable(hdmi.vdda_reg);
if (r)
return r;
goto err_reg_enable;
r = hdmi_runtime_get();
if (r)
goto err_runtime_get;
hdmi4_core_powerdown_disable(&hdmi.core);
/* Make selection of HDMI in DSS */
dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
@ -140,12 +155,17 @@ static int hdmi_power_on_core(struct omap_dss_device *dssdev)
err_runtime_get:
regulator_disable(hdmi.vdda_reg);
err_reg_enable:
hdmi.core.core_pwr_cnt--;
return r;
}
static void hdmi_power_off_core(struct omap_dss_device *dssdev)
{
if (--hdmi.core.core_pwr_cnt)
return;
hdmi.core_enabled = false;
hdmi_runtime_put();
@ -166,8 +186,8 @@ static int hdmi_power_on_full(struct omap_dss_device *dssdev)
return r;
/* disable and clear irqs */
hdmi_wp_clear_irqenable(wp, 0xffffffff);
hdmi_wp_set_irqstatus(wp, 0xffffffff);
hdmi_wp_clear_irqenable(wp, ~HDMI_IRQ_CORE);
hdmi_wp_set_irqstatus(wp, ~HDMI_IRQ_CORE);
vm = &hdmi.cfg.vm;
@ -242,7 +262,7 @@ static void hdmi_power_off_full(struct omap_dss_device *dssdev)
{
enum omap_channel channel = dssdev->dispc_channel;
hdmi_wp_clear_irqenable(&hdmi.wp, 0xffffffff);
hdmi_wp_clear_irqenable(&hdmi.wp, ~HDMI_IRQ_CORE);
hdmi_wp_video_stop(&hdmi.wp);
@ -393,11 +413,11 @@ static void hdmi_display_disable(struct omap_dss_device *dssdev)
mutex_unlock(&hdmi.lock);
}
static int hdmi_core_enable(struct omap_dss_device *dssdev)
int hdmi4_core_enable(struct omap_dss_device *dssdev)
{
int r = 0;
DSSDBG("ENTER omapdss_hdmi_core_enable\n");
DSSDBG("ENTER omapdss_hdmi4_core_enable\n");
mutex_lock(&hdmi.lock);
@ -415,9 +435,9 @@ err0:
return r;
}
static void hdmi_core_disable(struct omap_dss_device *dssdev)
void hdmi4_core_disable(struct omap_dss_device *dssdev)
{
DSSDBG("Enter omapdss_hdmi_core_disable\n");
DSSDBG("Enter omapdss_hdmi4_core_disable\n");
mutex_lock(&hdmi.lock);
@ -475,19 +495,28 @@ static int hdmi_read_edid(struct omap_dss_device *dssdev,
need_enable = hdmi.core_enabled == false;
if (need_enable) {
r = hdmi_core_enable(dssdev);
r = hdmi4_core_enable(dssdev);
if (r)
return r;
}
r = read_edid(edid, len);
if (r >= 256)
hdmi4_cec_set_phys_addr(&hdmi.core,
cec_get_edid_phys_addr(edid, r, NULL));
else
hdmi4_cec_set_phys_addr(&hdmi.core, CEC_PHYS_ADDR_INVALID);
if (need_enable)
hdmi_core_disable(dssdev);
hdmi4_core_disable(dssdev);
return r;
}
static void hdmi_lost_hotplug(struct omap_dss_device *dssdev)
{
hdmi4_cec_set_phys_addr(&hdmi.core, CEC_PHYS_ADDR_INVALID);
}
static int hdmi_set_infoframe(struct omap_dss_device *dssdev,
const struct hdmi_avi_infoframe *avi)
{
@ -514,6 +543,7 @@ static const struct omapdss_hdmi_ops hdmi_ops = {
.get_timings = hdmi_display_get_timings,
.read_edid = hdmi_read_edid,
.lost_hotplug = hdmi_lost_hotplug,
.set_infoframe = hdmi_set_infoframe,
.set_hdmi_mode = hdmi_set_hdmi_mode,
};
@ -715,6 +745,10 @@ static int hdmi4_bind(struct device *dev, struct device *master, void *data)
if (r)
goto err;
r = hdmi4_cec_init(pdev, &hdmi.core, &hdmi.wp);
if (r)
goto err;
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
DSSERR("platform_get_irq failed\n");
@ -724,7 +758,7 @@ static int hdmi4_bind(struct device *dev, struct device *master, void *data)
r = devm_request_threaded_irq(&pdev->dev, irq,
NULL, hdmi_irq_handler,
IRQF_ONESHOT, "OMAP HDMI", &hdmi.wp);
IRQF_ONESHOT, "OMAP HDMI", &hdmi);
if (r) {
DSSERR("HDMI IRQ request failed\n");
goto err;
@ -759,6 +793,8 @@ static void hdmi4_unbind(struct device *dev, struct device *master, void *data)
hdmi_uninit_output(pdev);
hdmi4_cec_uninit(&hdmi.core);
hdmi_pll_uninit(&hdmi.pll);
pm_runtime_disable(&pdev->dev);

381
drivers/gpu/drm/omapdrm/dss/hdmi4_cec.c Normal file
View File

@ -0,0 +1,381 @@
/*
* HDMI CEC
*
* Based on the CEC code from hdmi_ti_4xxx_ip.c from Android.
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
* Authors: Yong Zhi
* Mythri pk <mythripk@ti.com>
*
* Heavily modified to use the linux CEC framework:
*
* Copyright 2016-2017 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include "dss.h"
#include "hdmi.h"
#include "hdmi4_core.h"
#include "hdmi4_cec.h"
/* HDMI CEC */
#define HDMI_CEC_DEV_ID 0x900
#define HDMI_CEC_SPEC 0x904
/* Not really a debug register, more a low-level control register */
#define HDMI_CEC_DBG_3 0x91C
#define HDMI_CEC_TX_INIT 0x920
#define HDMI_CEC_TX_DEST 0x924
#define HDMI_CEC_SETUP 0x938
#define HDMI_CEC_TX_COMMAND 0x93C
#define HDMI_CEC_TX_OPERAND 0x940
#define HDMI_CEC_TRANSMIT_DATA 0x97C
#define HDMI_CEC_CA_7_0 0x988
#define HDMI_CEC_CA_15_8 0x98C
#define HDMI_CEC_INT_STATUS_0 0x998
#define HDMI_CEC_INT_STATUS_1 0x99C
#define HDMI_CEC_INT_ENABLE_0 0x990
#define HDMI_CEC_INT_ENABLE_1 0x994
#define HDMI_CEC_RX_CONTROL 0x9B0
#define HDMI_CEC_RX_COUNT 0x9B4
#define HDMI_CEC_RX_CMD_HEADER 0x9B8
#define HDMI_CEC_RX_COMMAND 0x9BC
#define HDMI_CEC_RX_OPERAND 0x9C0
#define HDMI_CEC_TX_FIFO_INT_MASK 0x64
#define HDMI_CEC_RETRANSMIT_CNT_INT_MASK 0x2
#define HDMI_CORE_CEC_RETRY 200
static void hdmi_cec_received_msg(struct hdmi_core_data *core)
{
u32 cnt = hdmi_read_reg(core->base, HDMI_CEC_RX_COUNT) & 0xff;
/* While there are CEC frames in the FIFO */
while (cnt & 0x70) {
/* and the frame doesn't have an error */
if (!(cnt & 0x80)) {
struct cec_msg msg = {};
unsigned int i;
/* then read the message */
msg.len = cnt & 0xf;
msg.msg[0] = hdmi_read_reg(core->base,
HDMI_CEC_RX_CMD_HEADER);
msg.msg[1] = hdmi_read_reg(core->base,
HDMI_CEC_RX_COMMAND);
for (i = 0; i < msg.len; i++) {
unsigned int reg = HDMI_CEC_RX_OPERAND + i * 4;
msg.msg[2 + i] =
hdmi_read_reg(core->base, reg);
}
msg.len += 2;
cec_received_msg(core->adap, &msg);
}
/* Clear the current frame from the FIFO */
hdmi_write_reg(core->base, HDMI_CEC_RX_CONTROL, 1);
/* Wait until the current frame is cleared */
while (hdmi_read_reg(core->base, HDMI_CEC_RX_CONTROL) & 1)
udelay(1);
/*
* Re-read the count register and loop to see if there are
* more messages in the FIFO.
*/
cnt = hdmi_read_reg(core->base, HDMI_CEC_RX_COUNT) & 0xff;
}
}
static void hdmi_cec_transmit_fifo_empty(struct hdmi_core_data *core, u32 stat1)
{
if (stat1 & 2) {
u32 dbg3 = hdmi_read_reg(core->base, HDMI_CEC_DBG_3);
cec_transmit_done(core->adap,
CEC_TX_STATUS_NACK |
CEC_TX_STATUS_MAX_RETRIES,
0, (dbg3 >> 4) & 7, 0, 0);
} else if (stat1 & 1) {
cec_transmit_done(core->adap,
CEC_TX_STATUS_ARB_LOST |
CEC_TX_STATUS_MAX_RETRIES,
0, 0, 0, 0);
} else if (stat1 == 0) {
cec_transmit_done(core->adap, CEC_TX_STATUS_OK,
0, 0, 0, 0);
}
}
void hdmi4_cec_irq(struct hdmi_core_data *core)
{
u32 stat0 = hdmi_read_reg(core->base, HDMI_CEC_INT_STATUS_0);
u32 stat1 = hdmi_read_reg(core->base, HDMI_CEC_INT_STATUS_1);
hdmi_write_reg(core->base, HDMI_CEC_INT_STATUS_0, stat0);
hdmi_write_reg(core->base, HDMI_CEC_INT_STATUS_1, stat1);
if (stat0 & 0x40)
REG_FLD_MOD(core->base, HDMI_CEC_DBG_3, 0x1, 7, 7);
else if (stat0 & 0x24)
hdmi_cec_transmit_fifo_empty(core, stat1);
if (stat1 & 2) {
u32 dbg3 = hdmi_read_reg(core->base, HDMI_CEC_DBG_3);
cec_transmit_done(core->adap,
CEC_TX_STATUS_NACK |
CEC_TX_STATUS_MAX_RETRIES,
0, (dbg3 >> 4) & 7, 0, 0);
} else if (stat1 & 1) {
cec_transmit_done(core->adap,
CEC_TX_STATUS_ARB_LOST |
CEC_TX_STATUS_MAX_RETRIES,
0, 0, 0, 0);
}
if (stat0 & 0x02)
hdmi_cec_received_msg(core);
if (stat1 & 0x3)
REG_FLD_MOD(core->base, HDMI_CEC_DBG_3, 0x1, 7, 7);
}
static bool hdmi_cec_clear_tx_fifo(struct cec_adapter *adap)
{
struct hdmi_core_data *core = cec_get_drvdata(adap);
int retry = HDMI_CORE_CEC_RETRY;
int temp;
REG_FLD_MOD(core->base, HDMI_CEC_DBG_3, 0x1, 7, 7);
while (retry) {
temp = hdmi_read_reg(core->base, HDMI_CEC_DBG_3);
if (FLD_GET(temp, 7, 7) == 0)
break;
retry--;
}
return retry != 0;
}
static bool hdmi_cec_clear_rx_fifo(struct cec_adapter *adap)
{
struct hdmi_core_data *core = cec_get_drvdata(adap);
int retry = HDMI_CORE_CEC_RETRY;
int temp;
hdmi_write_reg(core->base, HDMI_CEC_RX_CONTROL, 0x3);
retry = HDMI_CORE_CEC_RETRY;
while (retry) {
temp = hdmi_read_reg(core->base, HDMI_CEC_RX_CONTROL);
if (FLD_GET(temp, 1, 0) == 0)
break;
retry--;
}
return retry != 0;
}
static int hdmi_cec_adap_enable(struct cec_adapter *adap, bool enable)
{
struct hdmi_core_data *core = cec_get_drvdata(adap);
int temp, err;
if (!enable) {
hdmi_write_reg(core->base, HDMI_CEC_INT_ENABLE_0, 0);
hdmi_write_reg(core->base, HDMI_CEC_INT_ENABLE_1, 0);
REG_FLD_MOD(core->base, HDMI_CORE_SYS_INTR_UNMASK4, 0, 3, 3);
hdmi_wp_clear_irqenable(core->wp, HDMI_IRQ_CORE);
hdmi_wp_set_irqstatus(core->wp, HDMI_IRQ_CORE);
hdmi4_core_disable(NULL);
return 0;
}
err = hdmi4_core_enable(NULL);
if (err)
return err;
/* Clear TX FIFO */
if (!hdmi_cec_clear_tx_fifo(adap)) {
pr_err("cec-%s: could not clear TX FIFO\n", adap->name);
return -EIO;
}
/* Clear RX FIFO */
if (!hdmi_cec_clear_rx_fifo(adap)) {
pr_err("cec-%s: could not clear RX FIFO\n", adap->name);
return -EIO;
}
/* Clear CEC interrupts */
hdmi_write_reg(core->base, HDMI_CEC_INT_STATUS_1,
hdmi_read_reg(core->base, HDMI_CEC_INT_STATUS_1));
hdmi_write_reg(core->base, HDMI_CEC_INT_STATUS_0,
hdmi_read_reg(core->base, HDMI_CEC_INT_STATUS_0));
/* Enable HDMI core interrupts */
hdmi_wp_set_irqenable(core->wp, HDMI_IRQ_CORE);
/* Unmask CEC interrupt */
REG_FLD_MOD(core->base, HDMI_CORE_SYS_INTR_UNMASK4, 0x1, 3, 3);
/*
* Enable CEC interrupts:
* Transmit Buffer Full/Empty Change event
* Transmitter FIFO Empty event
* Receiver FIFO Not Empty event
*/
hdmi_write_reg(core->base, HDMI_CEC_INT_ENABLE_0, 0x26);
/*
* Enable CEC interrupts:
* RX FIFO Overrun Error event
* Short Pulse Detected event
* Frame Retransmit Count Exceeded event
* Start Bit Irregularity event
*/
hdmi_write_reg(core->base, HDMI_CEC_INT_ENABLE_1, 0x0f);
/* cec calibration enable (self clearing) */
hdmi_write_reg(core->base, HDMI_CEC_SETUP, 0x03);
msleep(20);
hdmi_write_reg(core->base, HDMI_CEC_SETUP, 0x04);
temp = hdmi_read_reg(core->base, HDMI_CEC_SETUP);
if (FLD_GET(temp, 4, 4) != 0) {
temp = FLD_MOD(temp, 0, 4, 4);
hdmi_write_reg(core->base, HDMI_CEC_SETUP, temp);
/*
* If we enabled CEC in middle of a CEC message on the bus,
* we could have start bit irregularity and/or short
* pulse event. Clear them now.
*/
temp = hdmi_read_reg(core->base, HDMI_CEC_INT_STATUS_1);
temp = FLD_MOD(0x0, 0x5, 2, 0);
hdmi_write_reg(core->base, HDMI_CEC_INT_STATUS_1, temp);
}
return 0;
}
static int hdmi_cec_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
{
struct hdmi_core_data *core = cec_get_drvdata(adap);
u32 v;
if (log_addr == CEC_LOG_ADDR_INVALID) {
hdmi_write_reg(core->base, HDMI_CEC_CA_7_0, 0);
hdmi_write_reg(core->base, HDMI_CEC_CA_15_8, 0);
return 0;
}
if (log_addr <= 7) {
v = hdmi_read_reg(core->base, HDMI_CEC_CA_7_0);
v |= 1 << log_addr;
hdmi_write_reg(core->base, HDMI_CEC_CA_7_0, v);
} else {
v = hdmi_read_reg(core->base, HDMI_CEC_CA_15_8);
v |= 1 << (log_addr - 8);
hdmi_write_reg(core->base, HDMI_CEC_CA_15_8, v);
}
return 0;
}
static int hdmi_cec_adap_transmit(struct cec_adapter *adap, u8 attempts,
u32 signal_free_time, struct cec_msg *msg)
{
struct hdmi_core_data *core = cec_get_drvdata(adap);
int temp;
u32 i;
/* Clear TX FIFO */
if (!hdmi_cec_clear_tx_fifo(adap)) {
pr_err("cec-%s: could not clear TX FIFO for transmit\n",
adap->name);
return -EIO;
}
/* Clear TX interrupts */
hdmi_write_reg(core->base, HDMI_CEC_INT_STATUS_0,
HDMI_CEC_TX_FIFO_INT_MASK);
hdmi_write_reg(core->base, HDMI_CEC_INT_STATUS_1,
HDMI_CEC_RETRANSMIT_CNT_INT_MASK);
/* Set the retry count */
REG_FLD_MOD(core->base, HDMI_CEC_DBG_3, attempts - 1, 6, 4);
/* Set the initiator addresses */
hdmi_write_reg(core->base, HDMI_CEC_TX_INIT, cec_msg_initiator(msg));
/* Set destination id */
temp = cec_msg_destination(msg);
if (msg->len == 1)
temp |= 0x80;
hdmi_write_reg(core->base, HDMI_CEC_TX_DEST, temp);
if (msg->len == 1)
return 0;
/* Setup command and arguments for the command */
hdmi_write_reg(core->base, HDMI_CEC_TX_COMMAND, msg->msg[1]);
for (i = 0; i < msg->len - 2; i++)
hdmi_write_reg(core->base, HDMI_CEC_TX_OPERAND + i * 4,
msg->msg[2 + i]);
/* Operand count */
hdmi_write_reg(core->base, HDMI_CEC_TRANSMIT_DATA,
(msg->len - 2) | 0x10);
return 0;
}
static const struct cec_adap_ops hdmi_cec_adap_ops = {
.adap_enable = hdmi_cec_adap_enable,
.adap_log_addr = hdmi_cec_adap_log_addr,
.adap_transmit = hdmi_cec_adap_transmit,
};
void hdmi4_cec_set_phys_addr(struct hdmi_core_data *core, u16 pa)
{
cec_s_phys_addr(core->adap, pa, false);
}
int hdmi4_cec_init(struct platform_device *pdev, struct hdmi_core_data *core,
struct hdmi_wp_data *wp)
{
const u32 caps = CEC_CAP_TRANSMIT | CEC_CAP_LOG_ADDRS |
CEC_CAP_PASSTHROUGH | CEC_CAP_RC;
unsigned int ret;
core->adap = cec_allocate_adapter(&hdmi_cec_adap_ops, core,
"omap4", caps, CEC_MAX_LOG_ADDRS);
ret = PTR_ERR_OR_ZERO(core->adap);
if (ret < 0)
return ret;
core->wp = wp;
/*
* Initialize CEC clock divider: CEC needs 2MHz clock hence
* set the devider to 24 to get 48/24=2MHz clock
*/
REG_FLD_MOD(core->wp->base, HDMI_WP_CLK, 0x18, 5, 0);
ret = cec_register_adapter(core->adap, &pdev->dev);
if (ret < 0) {
cec_delete_adapter(core->adap);
return ret;
}
return 0;
}
void hdmi4_cec_uninit(struct hdmi_core_data *core)
{
cec_unregister_adapter(core->adap);
}

55
drivers/gpu/drm/omapdrm/dss/hdmi4_cec.h Normal file
View File

@ -0,0 +1,55 @@
/*
* HDMI header definition for OMAP4 HDMI CEC IP
*
* Copyright 2016-2017 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _HDMI4_CEC_H_
#define _HDMI4_CEC_H_
struct hdmi_core_data;
struct hdmi_wp_data;
struct platform_device;
/* HDMI CEC funcs */
#ifdef CONFIG_OMAP4_DSS_HDMI_CEC
void hdmi4_cec_set_phys_addr(struct hdmi_core_data *core, u16 pa);
void hdmi4_cec_irq(struct hdmi_core_data *core);
int hdmi4_cec_init(struct platform_device *pdev, struct hdmi_core_data *core,
struct hdmi_wp_data *wp);
void hdmi4_cec_uninit(struct hdmi_core_data *core);
#else
static inline void hdmi4_cec_set_phys_addr(struct hdmi_core_data *core, u16 pa)
{
}
static inline void hdmi4_cec_irq(struct hdmi_core_data *core)
{
}
static inline int hdmi4_cec_init(struct platform_device *pdev,
struct hdmi_core_data *core,
struct hdmi_wp_data *wp)
{
return 0;
}
static inline void hdmi4_cec_uninit(struct hdmi_core_data *core)
{
}
#endif
#endif

7
drivers/gpu/drm/omapdrm/dss/hdmi4_core.c
View File

@ -208,9 +208,9 @@ static void hdmi_core_init(struct hdmi_core_video_config *video_cfg)
video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK;
}
static void hdmi_core_powerdown_disable(struct hdmi_core_data *core)
void hdmi4_core_powerdown_disable(struct hdmi_core_data *core)
{
DSSDBG("Enter hdmi_core_powerdown_disable\n");
DSSDBG("Enter hdmi4_core_powerdown_disable\n");
REG_FLD_MOD(core->base, HDMI_CORE_SYS_SYS_CTRL1, 0x1, 0, 0);
}
@ -335,9 +335,6 @@ void hdmi4_configure(struct hdmi_core_data *core,
*/
hdmi_core_swreset_assert(core);
/* power down off */
hdmi_core_powerdown_disable(core);
v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL;
v_core_cfg.hdmi_dvi = cfg->hdmi_dvi_mode;

4
drivers/gpu/drm/omapdrm/dss/hdmi4_core.h
View File

@ -266,6 +266,10 @@ void hdmi4_configure(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
void hdmi4_core_dump(struct hdmi_core_data *core, struct seq_file *s);
int hdmi4_core_init(struct platform_device *pdev, struct hdmi_core_data *core);
int hdmi4_core_enable(struct omap_dss_device *dssdev);
void hdmi4_core_disable(struct omap_dss_device *dssdev);
void hdmi4_core_powerdown_disable(struct hdmi_core_data *core);
int hdmi4_audio_start(struct hdmi_core_data *core, struct hdmi_wp_data *wp);
void hdmi4_audio_stop(struct hdmi_core_data *core, struct hdmi_wp_data *wp);
int hdmi4_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,

1
drivers/gpu/drm/omapdrm/dss/omapdss.h
View File

@ -395,6 +395,7 @@ struct omapdss_hdmi_ops {
struct videomode *vm);
int (*read_edid)(struct omap_dss_device *dssdev, u8 *buf, int len);
void (*lost_hotplug)(struct omap_dss_device *dssdev);
bool (*detect)(struct omap_dss_device *dssdev);
int (*register_hpd_cb)(struct omap_dss_device *dssdev,