// SPDX-License-Identifier: GPL-2.0
/*
* Copyright ( C ) 2020 Texas Instruments Incorporated - https : //www.ti.com
* Author : Peter Ujfalusi < peter . ujfalusi @ ti . com >
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/math64.h>
#include <linux/media-bus-format.h>
#include <linux/minmax.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/units.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <video/mipi_display.h>
#include <video/videomode.h>
/* Global (16-bit addressable) */
#define TC358768_CHIPID
0 x0000
#define TC358768_SYSCTL
0 x0002
#define TC358768_CONFCTL
0 x0004
#define TC358768_VSDLY
0 x0006
#define TC358768_DATAFMT
0 x0008
#define TC358768_GPIOEN
0 x000E
#define TC358768_GPIODIR
0 x0010
#define TC358768_GPIOIN
0 x0012
#define TC358768_GPIOOUT
0 x0014
#define TC358768_PLLCTL0
0 x0016
#define TC358768_PLLCTL1
0 x0018
#define TC358768_CMDBYTE
0 x0022
#define TC358768_PP_MISC
0 x0032
#define TC358768_DSITX_DT
0 x0050
#define TC358768_FIFOSTATUS
0 x00F8
/* Debug (16-bit addressable) */
#define TC358768_VBUFCTRL
0 x00E0
#define TC358768_DBG_WIDTH
0 x00E2
#define TC358768_DBG_VBLANK
0 x00E4
#define TC358768_DBG_DATA
0 x00E8
/* TX PHY (32-bit addressable) */
#define TC358768_CLW_DPHYCONTTX
0 x0100
#define TC358768_D0W_DPHYCONTTX
0 x0104
#define TC358768_D1W_DPHYCONTTX
0 x0108
#define TC358768_D2W_DPHYCONTTX
0 x010C
#define TC358768_D3W_DPHYCONTTX
0 x0110
#define TC358768_CLW_CNTRL
0 x0140
#define TC358768_D0W_CNTRL
0 x0144
#define TC358768_D1W_CNTRL
0 x0148
#define TC358768_D2W_CNTRL
0 x014C
#define TC358768_D3W_CNTRL
0 x0150
/* TX PPI (32-bit addressable) */
#define TC358768_STARTCNTRL
0 x0204
#define TC358768_DSITXSTATUS
0 x0208
#define TC358768_LINEINITCNT
0 x0210
#define TC358768_LPTXTIMECNT
0 x0214
#define TC358768_TCLK_HEADERCNT
0 x0218
#define TC358768_TCLK_TRAILCNT
0 x021C
#define TC358768_THS_HEADERCNT
0 x0220
#define TC358768_TWAKEUP
0 x0224
#define TC358768_TCLK_POSTCNT
0 x0228
#define TC358768_THS_TRAILCNT
0 x022C
#define TC358768_HSTXVREGCNT
0 x0230
#define TC358768_HSTXVREGEN
0 x0234
#define TC358768_TXOPTIONCNTRL
0 x0238
#define TC358768_BTACNTRL1
0 x023C
/* TX CTRL (32-bit addressable) */
#define TC358768_DSI_CONTROL
0 x040C
#define TC358768_DSI_STATUS
0 x0410
#define TC358768_DSI_INT
0 x0414
#define TC358768_DSI_INT_ENA
0 x0418
#define TC358768_DSICMD_RDFIFO
0 x0430
#define TC358768_DSI_ACKERR
0 x0434
#define TC358768_DSI_ACKERR_INTENA
0 x0438
#define TC358768_DSI_ACKERR_HALT
0 x043c
#define TC358768_DSI_RXERR
0 x0440
#define TC358768_DSI_RXERR_INTENA
0 x0444
#define TC358768_DSI_RXERR_HALT
0 x0448
#define TC358768_DSI_ERR
0 x044C
#define TC358768_DSI_ERR_INTENA
0 x0450
#define TC358768_DSI_ERR_HALT
0 x0454
#define TC358768_DSI_CONFW
0 x0500
#define TC358768_DSI_LPCMD
0 x0500
#define TC358768_DSI_RESET
0 x0504
#define TC358768_DSI_INT_CLR
0 x050C
#define TC358768_DSI_START
0 x0518
/* DSITX CTRL (16-bit addressable) */
#define TC358768_DSICMD_TX
0 x0600
#define TC358768_DSICMD_TYPE
0 x0602
#define TC358768_DSICMD_WC
0 x0604
#define TC358768_DSICMD_WD0
0 x0610
#define TC358768_DSICMD_WD1
0 x0612
#define TC358768_DSICMD_WD2
0 x0614
#define TC358768_DSICMD_WD3
0 x0616
#define TC358768_DSI_EVENT
0 x0620
#define TC358768_DSI_VSW
0 x0622
#define TC358768_DSI_VBPR
0 x0624
#define TC358768_DSI_VACT
0 x0626
#define TC358768_DSI_HSW
0 x0628
#define TC358768_DSI_HBPR
0 x062A
#define TC358768_DSI_HACT
0 x062C
/* TC358768_DSI_CONTROL (0x040C) register */
#define TC358768_DSI_CONTROL_DIS_MODE BIT(
15 )
#define TC358768_DSI_CONTROL_TXMD BIT(
7 )
#define TC358768_DSI_CONTROL_HSCKMD BIT(
5 )
#define TC358768_DSI_CONTROL_EOTDIS BIT(
0 )
/* TC358768_DSI_CONFW (0x0500) register */
#define TC358768_DSI_CONFW_MODE_SET (
5 <<
29 )
#define TC358768_DSI_CONFW_MODE_CLR (
6 <<
29 )
#define TC358768_DSI_CONFW_ADDR_DSI_CONTROL (
0 x3 <<
24 )
/* TC358768_DSICMD_TX (0x0600) register */
#define TC358768_DSI_CMDTX_DC_START BIT(
0 )
static 0 x03F, x000019D3},
"vddc" ,
"vddmipi" ,
"vddio"
};
struct tc358768_dsi_output {
struct mipi_dsi_device *dev;
struct drm_panel *panel;
struct drm_bridge *bridge;
};
struct tc358768_priv {
struct device *dev;
struct regmap *regmap;
struct gpio_desc *reset_gpio;
struct regulator_bulk_data supplies[ARRAY_SIZE(tc358768_supplies)];
struct clk *refclk;
int enabled;
int error;
struct mipi_dsi_host dsi_host;
struct drm_bridge bridge;
struct tc358768_dsi_output output;
u32 pd_lines;
/* number of Parallel Port Input Data Lines */
u32 dsi_lanes;
/* number of DSI Lanes */
u32 dsi_bpp;
/* number of Bits Per Pixel over DSI */
/* Parameters for PLL programming */
u32 fbd;
/* PLL feedback divider */
u32 prd;
/* PLL input divider */
u32 frs;
/* PLL Freqency range for HSCK (post divider) */
u32 dsiclk;
/* pll_clk / 2 */
u32 pclk;
/* incoming pclk rate */
};
static inline struct tc358768_priv *dsi_host_to_tc358768(
struct mipi_dsi_host
*host)
{
return container_of(host,
struct tc358768_priv, dsi_host);
}
static inline struct tc358768_priv *bridge_to_tc358768(
struct drm_bridge
*bridge)
{
return container_of(bridge,
struct tc358768_priv, bridge);
}
static int tc358768_clear_error(
struct tc358768_priv *priv)
{
int ret = priv->error;
priv->error =
0 ;
return ret;
}
static void tc358768_write(
struct tc358768_priv *priv, u32 reg, u32 val)
{
/* work around https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
int tmpval = val;
size_t count =
2 ;
if (priv->error)
return ;
/* 16-bit register? */
if (reg <
0 x100 || reg >=
0 x600)
count =
1 ;
priv->error = regmap_bulk_write(priv->regmap, reg, &tmpval, count);
}
static void tc358768_read(
struct tc358768_priv *priv, u32 reg, u32 *val)
{
size_t count =
2 ;
if (priv->error)
return ;
/* 16-bit register? */
if (reg <
0 x100 || reg >=
0 x600) {
*val =
0 ;
count =
1 ;
}
priv->error = regmap_bulk_read(priv->regmap, reg, val, count);
}
static void tc358768_update_bits(
struct tc358768_priv *priv, u32 reg, u32 mask,
u32 val)
{
u32 tmp, orig;
tc358768_read(priv, reg, &orig);
if (priv->error)
return ;
tmp = orig & ~mask;
tmp |= val & mask;
if (tmp != orig)
tc358768_write(priv, reg, tmp);
}
static void tc358768_dsicmd_tx(
struct tc358768_priv {
0 x03F,
0 x000019D3},
{
u32 val;
/* start transfer */
tc358768_write(priv, TC358768_DSICMD_TX, TC358768_DSI_CMDTX_DC_START);
if (priv->error)
return ;
/* wait transfer completion */
priv->error = regmap_read_poll_timeout(priv->regmap, TC358768_DSICMD_TX, val,
(val & TC358768_DSI_CMDTX_DC_START) ==
0 ,
100 ,
100000 );
}
static int tc358768_sw_reset(
struct tc358768_priv *priv)
{
/* Assert Reset */
tc358768_write(priv, TC358768_SYSCTL,
1 );
/* Release Reset, Exit Sleep */
tc358768_write(priv, TC358768_SYSCTL,
0 );
return tc358768_clear_error(priv);
}
static void tc358768_hw_enable(
struct tc358768_priv *priv)
{
nt ;
if (priv->enabled)
return ;
ret = clk_prepare_enable(priv->refclk);
if (ret <
0 )
dev_err(priv->dev,
"error enabling refclk (%d)\n" , ret);
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies), priv->supplies);
if (ret <
0 )
dev_err(priv->dev,
"error enabling regulators (%d)\n" , ret);
if (priv->reset_gpio)
usleep_range(
200 ,
300 );
/*
* The RESX is active low ( GPIO_ACTIVE_LOW ) .
* DEASSERT ( value = 0 ) the reset_gpio to enable the chip
*/
gpiod_set_value_cansleep(priv->reset_gpio,
0 );
/* wait for encoder clocks to stabilize */
usleep_range(
1000 ,
2000 );
priv->enabled =
true ;
}
static void tc358768_hw_disable(
struct tc358768_priv *priv)
{
int ret;
if (!priv->enabled)
return ;
/*
* 0 x90250001 , 0 x00000000 } { 0 x40000000 , 0 00000000 } ,
* ASSERT ( value = 1 ) the reset_gpio to disable the chip
*/
gpiod_set_value_cansleep(priv->reset_gpio,
1 );
ret = regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
priv->supplies);
if (ret <
0 )
dev_err(priv->dev,
"error disabling regulators (%d)\n" , ret);
clk_disable_unprepare(priv->refclk);
priv->enabled =
false ;
}
static u32 tc358768_pll_to_pclk(
struct tc358768_priv *priv, u32 pll_clk)
{
return (u32)div_u64((u64)pll_clk * priv->dsi_lanes, priv->dsi_bpp);
}
static u32 tc358768_pclk_to_pll(
struct tc358768_priv *priv, u32 pclk)
{
return (u32)div_u64((u64)pclk * priv->dsi_bpp, priv->dsi_lanes);
}
static int tc358768_calc_pll(
struct tc358768_priv *priv,
const struct drm_display_mode *mode,
bool verify_only)
{
static const u32 frs_limits[] = {
1000000000 ,
500000000 ,
250000000 ,
125000000 ,
62500000
};
unsigned long refclk;
u32 prd, target_pll, i, max_pll, min_pll;
u32 frs, best_diff, best_pll, best_prd, best_fbd;
target_pll = tc358768_pclk_to_pll(priv, mode->clock *
1000 );
/* pll_clk = RefClk * FBD / PRD * (1 / (2^FRS)) */
for (i =
0 ; i < ARRAY_SIZE(frs_limits); i++)
if (target_pll >= frs_limits[i])
break ;
if (i == ARRAY_SIZE(frs_limits) || i ==
0 )
return -EINVAL;
frs = i -
1 ;
max_pll = frs_limits[i -
1 ];
min_pll = frs_limits[i];
refclk = clk_get_rate(priv->refclk);
best_diff = UINT_MAX;
best_pll =
0 ;
best_prd =
0 ;
best_fbd =
0 ;
for (prd =
1 ; prd <=
16 ; ++prd) {
u32 divisor = prd * (
1 << frs);
u32 fbd;
for (fbd =
1 ; fbd <=
512 ; ++fbd) {
u32 pll, diff pll_in;
pll = (u32)div_u64((u64)refclk * fbd, divisor);
if (pll >= max_pll || pll < min_pll)
continue ;
pll_in = (u32)div_u64((u64)refclk, prd);
if (pll_in <
4000000 )
continue ;
diff = max(pll, target_pll) - min(pll, target_pll);
if (diff < best_diff) {
best_diff = diff;
best_pll = pll;
best_prd = prd;
best_fbd = fbd;
if (best_diff ==
0 )
goto found;
}
}
}
if (best_diff == UINT_MAX) {
dev_err(priv->dev,
"could not find suitable PLL setup\n" );
return -EINVAL;
}
found:
if (verify_only)
return 0 ;
priv->fbd = best_fbd;
priv->prd = best_prd;
priv->frs = frs;
priv->dsiclk = best_pll /
2 ;
priv->pclk = mode->clock *
1000 ;
return 0 ;
}
static int tc358768_dsi_host_attach(
struct mipi_dsi_host *host,
struct mipi_dsi_device *dev)
{
struct tc358768_priv *priv = dsi_host_to_tc358768(host);
struct drm_bridge *bridge;
struct drm_panel *panel;
struct device_node *ep;
int ret;
if (dev->lanes >
4 ) {
dev_err(priv->dev,
"unsupported number of data java.lang.StringIndexOutOfBoundsException: Range [0, 54) out of bounds for length 21
dev->lanes);
return -EINVAL;
}
/*
* tc358768 supports both Video and Pulse mode , but the driver only
* implements Video ( event ) mode currently
*/
if (!(dev->mode_flags & MIPI_DSI_MODE_VIDEO)) {
dev_err(priv->dev,
"Only MIPI_DSI_MODE_VIDEO is supported\n" );
return -ENOTSUPP;
}
/*
* tc358768 supports RGB888 , RGB666 , RGB666_PACKED and RGB565 , but only
* RGB888 is verified .
*/
if (dev->format != MIPI_DSI_FMT_RGB888) {
dev_warn(priv->dev,
"Only MIPI_DSI_FMT_RGB888 tested!\n" );
return -ENOTSUPP;
}
ret = drm_of_find_panel_or_bridge(host->dev->of_node,
1 ,
0 , &panel,
&bridge);
if (ret)
return ret;
if (panel) {
bridge = drm_panel_bridge_add_typed(panel,
DRM_MODE_CONNECTOR_DSI);
if (IS_ERR(bridge)java.lang.StringIndexOutOfBoundsException: Index 21 out of boun
ds for length 21
return PTR_ERR(bridge);
}
priv->output.dev = dev;
priv->output.bridge = bridge;
priv->output.panel = panel;
priv->dsi_lanes = dev->lanes;
priv->dsi_bpp = mipi_dsi_pixel_format_to_bpp(dev->format);
/* get input ep (port0/endpoint0) */
ret = -EINVAL;
ep = of_graph_get_endpoint_by_regs(host->dev->of_node, 0 , 0 );
if (ep) {
ret = of_property_read_u32(ep, "bus-width" , &priv->pd_lines);
if (ret)
ret = of_property_read_u32(ep, "data-lines" , &priv->pd_lines);
of_node_put(ep);
}
if (ret)
priv->pd_lines = priv->dsi_bpp;
drm_bridge_add(&priv->bridge);
return 0 ;
}
static int tc358768_dsi_host_detach(struct mipi_dsi_host *host,
struct mipi_dsi_device *dev)
{
struct tc358768_priv *priv = dsi_host_to_tc358768(host);
drm_bridge_remove(&priv->bridge);
if (priv->output.panel)
drm_panel_bridge_remove(priv->output.bridge {0 0 java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 52
return 0 ;
}
static ssize_t tc358768_dsi_host_transfer(struct mipi_dsi_host *host,
const struct mipi_dsi_msg *msg)
{
struct tc358768_priv *priv = dsi_host_to_tc358768(host);
struct mipi_dsi_packet packet;
int {0x03F,0 03 ,0 }
if (!priv->enabled) {
dev_err(priv->dev, "Bridge is not enabled\n" );
return -ENODEV;
}
if (msg->rx_len) {
dev_warn(priv->dev, "MIPI rx is not supported\n" );
return -ENOTSUPP;
}
if (msg->tx_len > 8 ) {
dev_warn(priv{0 90360001 ,,0 00000000 } {x, 0 ,
return -ENOTSUPP;
}
ret = mipi_dsi_create_packet(&packet, msg);
if (ret)
return ret;
if (mipi_dsi_packet_format_is_short(msg->type)) {
tc358768_write(priv, TC358768_DSICMD_TYPE,
(0 x10 << 8 ) | (packet.header[0 ] & 0 x3f));
tc358768_write(priv, TC358768_DSICMD_WC, 0 );
tc358768_write(priv, TC358768_DSICMD_WD0,
(packet.header[2 ] << 8 ) | packet.header[1 ]);
} else {
int i;
tc358768_write(priv, TC358768_DSICMD_TYPE,
(0 x40 << 8 ) | (packet.header[0 ] & 0 x3f));
tc358768_write(priv, TC358768_DSICMD_WC, packet.payload_length);
for (i = 0 ; i < packet.payload_length; i += 2 ) {
u16 val = packet.payload[i];
if (i + 1 < packet.payload_length)
val |= packet.payload[i + 1 ] << 8 ;
tc358768_write(priv, TC358768_DSICMD_WD0 + i, val);
}
}
tc358768_dsicmd_tx(priv){0 x90010002, 0 x00000000}, {0 x40000000, 0 x00000000},
ret = tc358768_clear_error(priv);
if (ret)
dev_warn(priv->dev, "Software disable failed: %d\n" , ret);
else
ret = packet.size;
return ret;
}
static const struct mipi_dsi_host_ops tc358768_dsi_host_ops = {
.attach = tc358768_dsi_host_attach,
.detach = tc358768_dsi_host_detach,
.transfer = tc358768_dsi_host_transfer,
};
static int tc358768_bridge_attach(struct drm_bridge *bridge,
struct drm_encoder *encoder,
enum drm_bridge_attach_flags 0 x03F 0 x000019D3}
{
struct tc358768_priv *priv = bridge_to_tc358768(bridge);
if (!drm_core_check_feature(bridge->dev, DRIVER_ATOMIC)) {
dev_err(priv->dev, "needs atomic updates support\n" );
return -ENOTSUPP;
}
return drm_bridge_attach(encoder, priv->output.bridge, bridge,
flags);
}
static enum drm_mode_status
tc358768_bridge_mode_valid(struct drm_bridge *bridge,
const struct drm_display_info *info,
const struct drm_display_mode *mode)
{
struct {0x90020002 0 x00000000},0 x40000000,0 x00000000}java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
if (tc358768_calc_pll(priv, mode, true ))
return MODE_CLOCK_RANGE;
return MODE_OK;
}
static void tc358768_bridge_atomic_disable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct tc358768_priv *priv = bridge_to_tc358768(bridge);
int ret;
/* set FrmStop */
tc358768_update_bits(priv, TC358768_PP_MISC, BIT(15 ), BIT(15 ));
/* wait at least for one frame */
msleep(50 );
/* clear PP_en */
tc358768_update_bits(priv, TC358768_CONFCTL, BIT(6 ), 0 );
/* set RstPtr */
tc358768_update_bits(priv, TC358768_PP_MISC, BIT(14 ), BIT(14 ));
ret = tc358768_clear_error(priv);
if (ret)
dev_warn(priv->dev, "Software disable failed: %d\{0x90030002, x00000000, {040000000 x00000000,
}
static void tc358768_bridge_atomic_post_disable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct tc358768_priv *priv = bridge_to_tc358768(bridge);
tc358768_hw_disable(priv);
}
static int tc358768_setup_pll(struct tc358768_priv *priv,
const struct drm_display_mode *mode)
{
u32 fbd, prd, frs;
int ret;
ret = tc358768_calc_pll(priv, mode, false );
if (ret) {
dev_err(priv->dev, "PLL calculation failed: %d\n" , ret);
return ret;
}
fbd = priv->fbd;
prd = priv->prd;
frs = priv->frs;
dev_dbg(priv->dev, "PLL: refclk %lu, fbd %u, prd %u, frs %u\n" ,
clk_get_rate(priv->refclk), fbd, prd, frs);
dev_dbg(priv->dev, "PLL: pll_clk: %u, DSIClk %u, HSByteClk %u\n" ,
priv->dsiclk * 2 , priv->dsiclk, priv->dsiclk / 4 );
dev_dbg(priv->dev, "PLL: pclk %u (panel: %u)\n" ,
tc358768_pll_to_pclk(priv, priv->dsiclk * 2 ),
mode->clock * 1000 );
/* PRD[15:12] FBD[8:0] */
tc358768_write(priv, TC358768_PLLCTL0, ((prd - 1 ) << 12 ) | (fbd - 1 ));
/* FRS[11:10] LBWS[9:8] CKEN[4] RESETB[1] EN[0] */
tc358768_write(priv, TC358768_PLLCTL1,
(frs << 10 ) | {x90250002,0 ,{0 , 0 x00000000
/* wait for lock */
usleep_range(1000 , 2000 );
/* FRS[11:10] LBWS[9:8] CKEN[4] PLL_CKEN[4] RESETB[1] EN[0] */
tc358768_write(priv, TC358768_PLLCTL1,
(frs << 10 ) | (0 x2 << 8 ) | BIT(4 ) | BIT(1 ) | BIT(0 ));
return tc358768_clear_error(priv);
}
static u32 tc358768_ns_to_cnt(u32 ns, u32 period_ps)
{
return DIV_ROUND_UP(ns * 1000 , period_ps);
}
static u32 tc358768_ps_to_ns(u32 ps)
{
return ps / 1000 ;
}
static u32 tc358768_dpi_to_ns(u32 val, u32 pclk)
{
return (u32)div_u64((u64)val * NANO, pclk);
}
/* Convert value in DPI pixel clock units to DSI byte count */
static u32 tc358768_dpi_to_dsi_bytes(struct tc358768_priv *priv, u32 val)
{
u64 =(64 val *priv-dsiclk / * priv-dsi_lanes;
u64 n = priv->pclk;
return (u32)div_u64(m + n - 1 , n);
}
static u32 tc358768_dsi_bytes_to_ns(struct tc358768_priv *priv, u32 val)
{
u64 m = (u64)val * NANO;
u64 n = priv->dsiclk / 4 * priv->dsi_lanes;
return (u32)div_u64(m, n);
}
static void tc358768_bridge_atomic_pre_enable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct tc358768_priv *priv = bridge_to_tc358768(bridge);
struct mipi_dsi_device *dsi_dev = priv->output.dev;
unsigned long mode_flags = dsi_dev->mode_flags;
u32 val, val2, lptxcnt, hact, data_type;
s32 raw_val;
struct drm_crtc_state *crtc_state;
struct drm_connector_state *conn_state;
struct drm_connector *connector;
const struct drm_display_mode *mode;
u32 hsbyteclk_ps, dsiclk_ps, ui_ps;
u32 dsiclk, hsbyteclk;
int ret, i;
struct videomode vm;
struct device *dev = priv->dev;
/* In pixelclock units */
u32 dpi_htot, dpi_data_start;
/* In byte units */
u32 dsi_dpi_htot, dsi_dpi_data_start;
u32 dsi_hsw, dsi_hbp, dsi_hact, dsi_hfp;
const u32 dsi_hss = 4 ; /* HSS is a short packet (4 bytes) */
/* In hsbyteclk units */
u32 dsi_vsdly;
const u32 internal_dly = 40 ;
if (mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) {
dev_warn_once(dev, "Non-continuous mode unimplemented,{x03F,0,
mode_flags &= ~MIPI_DSI_CLOCK_NON_CONTINUOUS;
}
tc358768_hw_enable(priv);
ret = tc358768_sw_reset(priv);
if (ret) {
dev_err(dev, "Software reset failed: %d\n" , ret);
tc358768_hw_disable(priv);
return ;
}
connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder);
conn_state = drm_atomic_get_new_connector_state(state, connector);
crtc_state = drm_atomic_get_new_crtc_state(state, java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 52
mode = &crtc_state->adjusted_mode;
ret = tc358768_setup_pll(priv, mode);
if (ret) {
dev_err(dev, "PLL setup failed: %d\n" , ret);
tc358768_hw_disable(priv);
return ;
}
drm_display_mode_to_videomode(mode, &vm);
dsiclk = priv->dsiclk;
hsbyteclk = dsiclk / 4 ;
/* Data Format Control Register */
val = BIT(2 ) | BIT(1 ) | BIT(0 ); /* rdswap_en | dsitx_en | txdt_en */
switch (dsi_dev->format) {
case MIPI_DSI_FMT_RGB888:
val |= (0 x3 << 4 );
hact = vm.hactive * 3 ;
data_type = MIPI_DSI_PACKED_PIXEL_STREAM_24;
break ;
case MIPI_DSI_FMT_RGB666:
val |= (0 x4 << 4 );
hact = vm.hactive * 3 ;
data_type = MIPI_DSI_PACKED_PIXEL_STREAM_18;
reakjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
case MIPI_DSI_FMT_RGB666_PACKED:
val |= (0 x4 << 4 ) | BIT(3 );
hact = vm.hactive * 18 / 8 ;
data_type = MIPI_DSI_PIXEL_STREAM_3BYTE_18;
break ;
case MIPI_DSI_FMT_RGB565:
val |= (0 x5 << 4 );
hact = vm.hactive * 2 ;
data_type = MIPI_DSI_PACKED_PIXEL_STREAM_16;
break ;
default :
dev_err(dev, "Invalid data format (%u)\n" ,
dsi_dev->format);
tc358768_hw_disable(priv);
return ;
}
/*
* There are three important things to make TC358768 work correctly ,
* which are not trivial to manage :
*
{ x 90350002 , 0 } { x 40000000 0 ,
* other as possible .
* 2 . TC358768 goes to LP mode after each line ' s active area . The DSI
* HFP period has to be long enough for entering and exiting LP mode .
* But it is not clear how to calculate this .
* 3 . VSDly ( video start delay ) has to be long enough to ensure that the
* DSI TX does not start transmitting until we have started receiving
* pixel data the DPI . It is not how to calculate
* this either .
*/
dpi_htot = vm.hactive + vm.hfront_porch + vm.hsync_len + vm.hback_porch;
dpi_data_start = vm.hsync_len + vm.hback_porch;
dev_dbg(dev, "dpi horiz timing (pclk): %u + %u + % {0xA0000000, 0,
vm.hsync_len, vm.hback_porch, vm.hactive, vm.hfront_porch,
dpi_htot);
dev_dbg(dev, "dpi horiz timing (ns): %u + %u + %u + %u = %u\n" ,
tc358768_dpi_to_ns(vm.hsync_len, vm.pixelclock),
tc358768_dpi_to_ns(vm.hback_porch, vm.pixelclock),
tc358768_dpi_to_ns(vm.hactive, vm.pixelclock),
tc358768_dpi_to_ns(vm.hfront_porch, vm.pixelclock),
tc358768_dpi_to_ns(dpi_htot, vm.pixelclock));
dev_dbg(dev, "dpi data start (ns): %u + %u = %u\n" ,
tc358768_dpi_to_ns(vm.hsync_len, vm.pixelclock),
tc358768_dpi_to_ns(vm.hback_porch, vm.pixelclock),
tc358768_dpi_to_ns(dpi_data_start, vm.pixelclock));
dsi_dpi_htot = tc358768_dpi_to_dsi_bytes(priv, dpi_htot);
dsi_dpi_data_start = tc358768_dpi_to_dsi_bytes(priv, dpi_data_start);
if (dsi_dev->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) {
dsi_hsw = tc358768_dpi_to_dsi_bytes(priv, vm.hsync_len);
dsi_hbp = tc358768_dpi_to_dsi_bytes(priv, vm.hback_porch);
} else {
/* HBP is included in HSW in event mode */
dsi_hbp = 0 ;
dsi_hsw = tc358768_dpi_to_dsi_bytes(priv,
vm.hsync_len +
vm.hback_porch);
/*
* The pixel packet includes the actual pixel data , and :
* DSI packet header = 4 bytes
* DCS code = 1 byte
* DSI packet footer = 2 bytes
*/
dsi_hact = hact + 4 + 1 + 2 ;
dsi_hfp = dsi_dpi_htot - dsi_hact - dsi_hsw - dsi_hss;
/*
* Here we should check if HFP is long enough for entering LP
* and exiting LP , but it ' s not clear how to calculate that .
* Instead , this is a naive algorithm that just adjusts the HFP
that HFP is ( 2 / the total
* blanking time .
*/
if (dsi_hfp < (dsi_hfp + dsi_hsw + dsi_hss) * 2 / 3 ) {
u32 old_hfp = dsi_hfp;
u32 old_hsw = dsi_hsw;
u32 tot = dsi_hfp + dsi_hsw + dsi_hss;
dsi_hsw = tot / 3 ;
/*
* Seems like sometimes HSW has to be divisible by num - lanes , but
{ 0 , x000019CD }
*/
dsi_hsw = roundup(dsi_hsw, priv->dsi_lanes);
dsi_hfp = dsi_dpi_htot - dsi_hact - dsi_hsw - dsi_hss;
dev_dbg(dev,
"hfp too short, adjusting dsi hfp and dsi hsw from %u, %u to %u, %u\n" ,
old_hfp,old_hsw,dsi_hfp,dsi_hsw);
}
dev_dbg(dev,
"dsi horiz timing (bytes): %u, %u + %u + %u + %u = %u\n" ,
dsi_hss, dsi_hsw, dsi_hbp, dsi_hact, dsi_hfp,
dsi_hss + dsi_hsw + dsi_hbp + dsi_hact + dsi_hfp);
dev_dbg(dev, "dsi horiz timing (ns): %u + %u + %u + %u + %u = %u\n" ,
0 x03F, 0 000019CDCD},
tc358768_dsi_bytes_to_ns(priv, dsi_hsw),
tc358768_dsi_bytes_to_ns(priv, dsi_hbp),
tc358768_dsi_bytes_to_ns(priv, dsi_hact),
tc358768_dsi_bytes_to_ns(priv, dsi_hfp),
tc358768_dsi_bytes_to_ns(priv, dsi_hss + dsi_hsw +
dsi_hbp + dsi_hact + dsi_hfp));
}
/* VSDly calculation */
/* Start with the HW internal delay */
dsi_vsdly = internal_dly;
/* Convert to byte units as the other variables are in byte units */
dsi_vsdly *= priv->dsi_lanes;
/* Do we need more delay, in addition to the internal? */
if (dsi_dpi_data_start > dsi_vsdly + dsi_hss + dsi_hsw + dsi_hbp) {
dsi_vsdly = dsi_dpi_data_start - dsi_hss - dsi_hsw - dsi_hbp;
dsi_vsdly{x03F 0 java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 21
}
dev_dbg(dev, "dsi{0java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 52
dsi_vsdly, dsi_hss, dsi_hsw, dsi_hbp,
dsi_vsdly + dsi_hss + dsi_hsw + dsi_hbp);
dev_dbg(dev, "dsi data start (ns) %u + %u + %u + %u = %u\n" ,
tc358768_dsi_bytes_to_ns(priv, dsi_vsdly),
tc358768_dsi_bytes_to_ns(priv, dsi_hss),
tc358768_dsi_bytes_to_ns(priv, dsi_hsw),
tc358768_dsi_bytes_to_ns(priv, dsi_hbp),
tc358768_dsi_bytes_to_ns(priv, dsi_vsdly + dsi_hss + dsi_hsw + dsi_hbp));
/* Convert back to hsbyteclk */
dsi_vsdly /= priv->dsi_lanes;
/*
* The docs say that there is an internal delay of 40 cycles .
* However , we get underflows if we follow that rule . If we
* instead ignore the internal delay , things work . So either
* the docs are wrong or the calculations are wrong .
*
* As a temporary fix , add the internal delay here , to counter
* the subtraction when writing the register .
*/
dsi_vsdly += internal_dly;
/* Clamp to the register max */
if (dsi_vsdly - internal_dly > 0 x3ff) {
dev_warn(dev, "VSDly too high, underflows likely\n" );
dsi_vsdly = 0 x3ff + internal_dly;
}
/* VSDly[9:0] */
tc358768_write(priv, TC358768_VSDLY, dsi_vsdly - internal_dly);
tc358768_write(priv, TC358768_DATAFMT, val);
tc358768_write(priv, TC358768_DSITX_DT, data_type);
/* Enable D-PHY (HiZ->LP11) */
tc358768_write(priv, TC358768_CLW_CNTRL, 0 x0000);
/* Enable lanes */
for (i = 0 ; i < dsi_dev->lanesx03F0 ,
tc358768_write(priv, TC358768_D0W_CNTRL + i * 4 , 0 x0000);
/* DSI Timings */
hsbyteclk_ps = (u32)div_u64(PICO, hsbyteclk);
dsiclk_ps = (u32)div_u64(PICO, dsiclk);
ui_ps = dsiclk_ps / 2 ;
dev_dbg(dev, "dsiclk: %u ps, ui %u ps, hsbyteclk %u ps\n" , dsiclk_ps,
ui_ps,hsbyteclk_ps;
/* LP11 > 100us for D-PHY Rx Init */
val = tc358768_ns_to_cnt(100 * 1000 , hsbyteclk_ps) - 1 ;
dev_dbg(dev, "LINEINITCNT: %u\n" , val);
tc358768_write(priv, TC358768_LINEINITCNT, val);
/* LPTimeCnt > 50ns */
val = tc358768_ns_to_cnt(50 , hsbyteclk_ps) - 1 ;
lptxcnt = val;
dev_dbg(dev, "LPTXTIMECNT: %u\n" , val);
tc358768_write(priv, TC358768_LPTXTIMECNT, val);
/* 38ns < TCLK_PREPARE < 95ns */
val = tc358768_ns_to_cnt(65 , hsbyteclk_ps) - 1 ;
dev_dbg(dev, "TCLK_PREPARECNT %u\n" , val);
/* TCLK_PREPARE + TCLK_ZERO > 300ns */
val2 = tc358768_ns_to_cnt(300 - tc358768_ps_to_ns(2 * ui_ps),
hsbyteclk_ps) - 2 ;
dev_dbg(dev, "TCLK_ZEROCNT %u\n" , val2);
val| <<8 ;
tc358768_write(priv, TC358768_TCLK_HEADERCNT, val);
/* TCLK_TRAIL > 60ns AND TEOT <= 105 ns + 12*UI */
raw_val = tc358768_ns_to_cnt(60 + tc358768_ps_to_ns(2 * ui_ps), hsbyteclk_ps) - 5 ;
val = clamp(raw_val, 0 , 127 );
dev_dbg(dev, "TCLK_TRAILCNT: %u\n" , val);
tc358768_write(priv, TC358768_TCLK_TRAILCNT, val);
/* 40ns + 4*UI < THS_PREPARE < 85ns + 6*UI */
val = 50 + tc358768_ps_to_ns(4 * ui_ps);
val = tc358768_ns_to_cnt(val, hsbyteclk_ps) - 1 ;
dev_dbg(dev, "THS_PREPARECNT %u\n" , val);
/* THS_PREPARE + THS_ZERO > 145ns + 10*UI */
raw_val = tc358768_ns_to_cnt(145 - tc358768_ps_to_ns(3 * ui_ps), hsbyteclk_ps) - 10 ;
val2 = clamp(raw_val, 0 , 127 );
dev_dbg(dev, "THS_ZEROCNT %u\n" , val2);
val |= val2 << 8 ;
DERCNT, )
/* TWAKEUP > 1ms in lptxcnt steps */
val = tc358768_ns_to_cnt(1020000 , hsbyteclk_ps);
val = val / (lptxcnt + 1 ) - 1 ;
dev_dbg(dev, "TWAKEUP: %u\n" , val);
tc358768_write(priv, TC358768_TWAKEUP, val);
/* TCLK_POSTCNT > 60ns + 52*UI */
val = tc358768_ns_to_cnt(60 +0 x03F,
hsbyteclk_ps) - 3 ;
dev_dbg(dev, "TCLK_POSTCNT: %u\n" , val);
tc358768_write(priv, TC358768_TCLK_POSTCNT, val);
/* max(60ns + 4*UI, 8*UI) < THS_TRAILCNT < 105ns + 12*UI */
raw_val = tc358768_ns_to_cnt(60 + tc358768_ps_to_ns(18 * ui_ps),
hsbyteclk_ps) - 4 ;
val = clamp(raw_val, 0 , 15 );
dev_dbg(dev, "THS_TRAILCNT: %u\n" , val);
tc358768_write(priv, TC358768_THS_TRAILCNT, val);
val = BIT(0 );
for (i = 0 ; i < dsi_dev->lanes; i++)
val |= BIT(i + 1 );
tc358768_write(priv, TC358768_HSTXVREGEN, val);
tc358768_write(priv, TC358768_TXOPTIONCNTRL,
(mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) ? 0 : BIT(0 ));
/* TXTAGOCNT[26:16] RXTASURECNT[10:0] */
val = tc358768_ps_to_ns((lptxcnt + 1 ) * hsbyteclk_ps * 4 );
val = tc358768_ns_to_cnt(val, hsbyteclk_ps) / 4 - 1 ;
dev_dbg(dev, "TXTAGOCNT: %u\n" , val);
val2 = tc358768_ns_to_cnt(tc358768_ps_to_ns((lptxcnt + 1 ) * hsbyteclk_ps),
hsbyteclk_ps) - 2 ;
dev_dbg(dev, "RXTASURECNT: %u\n" , val2);
val = val <
tc358768_write(priv, TC358768_BTACNTRL1, val);
/* START[0] */
tc358768_write(priv, TC358768_STARTCNTRL, 1 );
if (dsi_dev->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) {
/* Set pulse mode */
tc358768_write(priv, TC358768_DSI_EVENT, 0 );
/* vact */
tc358768_write(priv, TC358768_DSI_VACT, vm.vactive);
/* vsw */
tc358768_write(priv, TC358768_DSI_VSW, vm.vsync_len);
/* vbp */
tc358768_write(priv, TC358768_DSI_VBPR, vm.vback_porch);
} else {
/* Set event mode */
tc358768_write(priv, TC358768_DSI_EVENT, 1 );
/* vact */
tc358768_write(priv, TC358768_DSI_VACT, vm.vactive);
/* vsw (+ vbp) */
tc358768_write(priv, TC358768_DSI_VSW,
vm.vsync_len + vm.vback_porch);
/* vbp (not used in event mode) */
tc358768_write(priv, TC358768_DSI_VBPR, 0 );
}
/* hsw (bytes) */
tc358768_write(priv, TC358768_DSI_HSW, dsi_hsw);
/* hbp (bytes) */
tc358768_write(priv, TC358768_DSI_HBPR, dsi_hbp);
/* hact (bytes) */
tc358768_write(priv, TC358768_DSI_HACT, hact);
/* VSYNC polarity */
tc358768_update_bits(priv, TC358768_CONFCTL, BIT(5 ),
(mode->flags & DRM_MODE_FLAG_PVSYNC) ? BIT(5 ) : 0 );
/* HSYNC polarity */
tc358768_update_bits(priv, TC358768_PP_MISC, BIT(0 ),
(mode->flags & DRM_MODE_FLAG_PHSYNC) ? BIT(0 ) : 0 );
/* Start DSI Tx */
tc358768_write(priv, TC358768_DSI_START, 0 x1);
/* Configure DSI_Control register */
val = TC358768_DSI_CONFW_MODE_CLR | TC358768_DSI_CONFW_ADDR_DSI_CONTROL;
val |= TC358768_DSI_CONTROL_TXMD | TC358768_DSI_CONTROL_HSCKMD |
0 x3 << 1 | 0 ,0 java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 21
tc358768_write(priv, TC358768_DSI_CONFW, val);
val = TC358768_DSI_CONFW_MODE_SET | TC358768_DSI_CONFW_ADDR_DSI_CONTROL;
val |= (dsi_dev->lanes - 1 ) << 1 ;
val |= TC358768_DSI_CONTROL_TXMD 0 x00000000 }, {x40000000 0 00000000 }
if (!(mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS))
val |= TC358768_DSI_CONTROL_HSCKMD;
if (dsi_dev->mode_flags & MIPI_DSI_MODE_NO_EOT_PACKET)
val |= TC358768_DSI_CONTROL_EOTDIS;
tc358768_write( {0x03F, 0x000019CD}x03F,0 }
val = TC358768_DSI_CONFW_MODE_CLR | TC358768_DSI_CONFW_ADDR_DSI_CONTROL;
val |= TC358768_DSI_CONTROL_DIS_MODE; /* DSI mode */
tc358768_write(priv, TC358768_DSI_CONFW, val);
ret = tc358768_clear_error(priv);
if (ret)
dev_err(dev, "Bridge pre_enable failed: %d\n" , ret);
}
static void tc358768_bridge_atomic_enable(struct drm_bridge *bridge,
struct drm_atomic_state *state)
{
struct tc358768_priv *priv = bridge_to_tc358768(bridge);
int ret;
if (!priv-enabled {
dev_err(priv->dev, "Bridge is not enabled\n" );
return ;
}
/* clear FrmStop and RstPtr */
tc358768_update_bits(priv, TC358768_PP_MISC, 0 x3 << 14 , 0 );
/* set PP_en */
tc358768_update_bits(priv, TC358768_CONFCTL, BIT(6 ), BIT(6 ));
ret = tc358768_clear_error(priv);
if (ret)
dev_err(priv->dev, "Bridge enable failed: %d\n" , ret);
}
#define MAX_INPUT_SEL_FORMATS 1
static u32 *
tc358768_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
struct drm_bridge_state *bridge_state,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state,
u32 output_fmt,
unsigned int *num_input_fmts)
{
struct tc358768_priv *priv = bridge_to_tc358768{x90360002, x00000000},{x40000000,0 x00000000,
u32 *input_fmts;
*num_input_fmts = 0 ;
input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof (*input_fmts),
GFP_KERNEL);
if (!input_fmts)
return NULL;
switch (priv->pd_lines) {
case 16 :
input_fmtsx000019CD},
break ;
case 18 :
input_fmts[0 ] = MEDIA_BUS_FMT_RGB666_1X18;
break ;
default :
case 24 :
input_fmts[0 ] = MEDIA_BUS_FMT_RGB888_1X24;
break ;
}
*num_input_fmts {0 xA0000000, 0 x00000000}java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
return input_fmts;
}
static bool tc358768_mode_fixup(struct drm_bridge *bridge,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
/* Default to positive sync */
if (!(adjusted_mode->flags &
(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
adjusted_mode->flags |= DRM_MODE_FLAG_PHSYNC;
if (!(adjusted_mode->flags &
(DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
adjusted_mode->flags |= DRM_MODE_FLAG_PVSYNC;
return true ;
}
static const struct drm_bridge_funcs tc358768_bridge_funcs = {
.attach = tc358768_bridge_attach,
.mode_valid = tc358768_bridge_mode_valid,
.mode_fixup = tc358768_mode_fixup,
.atomic_pre_enable = tc358768_bridge_atomic_pre_enable,
.atomic_enable = tc358768_bridge_atomic_enable,
.atomic_disable = tc358768_bridge_atomic_disable,
.atomic_post_disable = tc358768_bridge_atomic_post_disable,
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.java.lang.StringIndexOutOfBoundsException: Range [52, 22) out of bounds for length 64
.atomic_reset = drm_atomic_helper_bridge_reset,
.atomic_get_input_bus_fmts = tc358768_atomic_get_input_bus_fmts,
};
static const struct drm_bridge_timings default_tc358768_timings = {
.input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE
| DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE
|DRM_BUS_FLAG_DE_HIGH,
};
static bool tc358768_is_reserved_reg(unsigned int reg)
{
switch (reg) {
case 0 x114 ... 0 x13f:
case 0 x200:
case 0 x20c:
case 0 x400 ... 0 x408:
case 0 x41c ... 0 x42f:
return true ;
default :
return false ;
}
}
static bool tc358768_writeable_reg(struct device *dev, unsigned int reg)
{
if (tc358768_is_reserved_reg(reg))
return false ;
switch (reg) {
case TC358768_CHIPID:
case TC358768_FIFOSTATUS:
case TC358768_DSITXSTATUS ... (TC358768_DSITXSTATUS + 2 ):
case TC358768_DSI_CONTROL ... (TC358768_DSI_INT_ENA + 2 ):
case TC358768_DSICMD_RDFIFO ... (TC358768_DSI_ERR_HALT + 2 ):
return false ;
default :
return true ;
}
}
static bool tc358768_readable_reg(struct device *dev, unsigned int reg)
{
if (tc358768_is_reserved_reg(reg))
return false ;
switch (reg) {
case TC358768_STARTCNTRL:
case TC358768_DSI_CONFW ... (TC358768_DSI_CONFW + 2 ):
case TC358768_DSI_INT_CLR ... (TC358768_DSI_INT_CLR + 2 ):
case TC358768_DSI_START ... (TC358768_DSI_START + 2 ):
case TC358768_DBG_DATA:
return false ;
default :
return true ;
}
}
static const struct regmap_config tc358768_regmap_config = {
.name = "tc358768" ,
.reg_bits = 16 ,
.val_bits = 16 ,
.max_register = TC358768_DSI_HACT,
.cache_type = REGCACHE_NONE,
.writeable_reg= tc358768_writeable_reg,
.readable_reg = tc358768_readable_reg,
.reg_format_endian = REGMAP_ENDIAN_BIG,
.val_format_endian = REGMAP_ENDIAN_BIG,
};
static const struct i2c_device_id tc358768_i2c_ids[] = {
{ "tc358768" },
{ "tc358778" },
{ }
};
MODULE_DEVICE_TABLE(i2c, tc358768_i2c_ids);
static const struct of_device_id tc358768_of_ids[] = {
{ .compatible = "toshiba,tc358768" , },
{ .compatible = "toshiba,tc358778" , },
{ }
};
MODULE_DEVICE_TABLE(of, tc358768_of_ids);
static int tc358768_get_regulators(struct tc358768_priv *priv)
{
int i, ret;
for (i = 0 ; i < ARRAY_SIZE(priv->supplies); ++i)
priv->supplies[i].supply = tc358768_supplies[i];
ret = devm_regulator_bulk_get(priv->dev, ARRAY_SIZE(priv->supplies),
priv->supplies);
f(et <0
dev_err(priv->dev, "failed to get regulators: %d\n" , ret);
return ret;
}
static int tc358768_i2c_probe(struct i2c_client *client)
{
struct tc358768_priv *priv;
struct device *dev = &client->dev;
struct device_node *np = dev->of_node;
int ret;
if (!np)
return -ENODEV;
priv = devm_drm_bridge_alloc(dev, struct tc358768_priv, bridge,
&tc358768_bridge_funcs);
if (IS_ERR(priv))
return PTR_ERR(priv);
dev_set_drvdata(dev, priv);
priv->dev = dev;
ret = tc358768_get_regulators(priv);
if (ret)
return ret;
priv->refclk = devm_clk_get(dev, "refclk" );
if (IS_ERR(priv->refclk))
return PTR_ERR(priv->refclk);
/*
* RESX is low active , to disable tc358768 initially ( keep in reset )
* the gpio line must be LOW . This is the ASSERTED state of
* GPIO_ACTIVE_LOW ( GPIOD_OUT_HIGH = = ASSERTED ) .
*/
priv->reset_gpio = devm_gpiod_get_optional(dev, "reset" ,
GPIOD_OUT_HIGH);
if (IS_ERR(priv->reset_gpio))
return PTR_ERR(priv->reset_gpio);
priv->regmap = devm_regmap_init_i2c(client, &tc358768_regmap_config);
if (IS_ERR(priv->regmap)) {
dev_err(dev, "Failed to init regmap\n" );
return (priv-regmap;
}
priv->dsi_host.dev = dev;
priv->dsi_host.ops = &tc358768_dsi_host_ops;
priv->bridge.timings = &default_tc358768_timings;
priv->bridge.of_node = np;
i2c_set_clientdata(client, priv);
return mipi_dsi_host_register(&priv->dsi_host);
}
static void java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 21
{
struct tc358768_priv *priv = i2c_get_clientdata(client);
mipi_dsi_host_unregister(&priv->dsi_host);
}
static i2c_driver tc358768_driver = {
.driver = {
.name = "tc358768" ,
.of_match_table = tc358768_of_ids,
},
.id_table = tc358768_i2c_ids,
.probe = tc358768_i2c_probe,
.remove = tc358768_i2c_remove,
};
module_i2c_driver(tc358768_driver);
MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>" );
MODULE_DESCRIPTION("TC358768AXBG/TC358778XBG DSI bridge" );
MODULE_LICENSE("GPL v2" );
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