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/Linux-v5.4/drivers/i2c/busses/
DMakefile3 # Makefile for the i2c bus drivers.
7 obj-$(CONFIG_I2C_SCMI) += i2c-scmi.o
10 obj-$(CONFIG_I2C_ALI1535) += i2c-ali1535.o
11 obj-$(CONFIG_I2C_ALI1563) += i2c-ali1563.o
12 obj-$(CONFIG_I2C_ALI15X3) += i2c-ali15x3.o
13 obj-$(CONFIG_I2C_AMD756) += i2c-amd756.o
14 obj-$(CONFIG_I2C_AMD756_S4882) += i2c-amd756-s4882.o
15 obj-$(CONFIG_I2C_AMD8111) += i2c-amd8111.o
16 obj-$(CONFIG_I2C_CHT_WC) += i2c-cht-wc.o
17 obj-$(CONFIG_I2C_I801) += i2c-i801.o
[all …]
Di2c-pxa.c5 * I2C adapter for the PXA I2C bus access.
21 #include <linux/i2c.h>
28 #include <linux/i2c-pxa.h>
36 #include <linux/platform_data/i2c-pxa.h>
64 * I2C registers definitions
109 { "pxa2xx-i2c", REGS_PXA2XX },
111 { "ce4100-i2c", REGS_CE4100 },
112 { "pxa910-i2c", REGS_PXA910 },
113 { "armada-3700-i2c", REGS_A3700 },
119 * I2C bit definitions
[all …]
Di2c-digicolor.c3 * I2C bus driver for Conexant Digicolor SoCs
13 #include <linux/i2c.h>
72 static void dc_i2c_cmd(struct dc_i2c *i2c, u8 cmd) in dc_i2c_cmd() argument
74 writeb_relaxed(cmd | II_COMMAND_GO, i2c->regs + II_COMMAND); in dc_i2c_cmd()
87 static void dc_i2c_data(struct dc_i2c *i2c, u8 data) in dc_i2c_data() argument
89 writeb_relaxed(data, i2c->regs + II_DATA); in dc_i2c_data()
92 static void dc_i2c_write_byte(struct dc_i2c *i2c, u8 byte) in dc_i2c_write_byte() argument
94 dc_i2c_data(i2c, byte); in dc_i2c_write_byte()
95 dc_i2c_cmd(i2c, II_CMD_SEND_ACK); in dc_i2c_write_byte()
98 static void dc_i2c_write_buf(struct dc_i2c *i2c) in dc_i2c_write_buf() argument
[all …]
Di2c-ocores.c3 * i2c-ocores.c: I2C bus driver for OpenCores I2C controller
4 * (https://opencores.org/project/i2c/overview)
19 #include <linux/i2c.h>
22 #include <linux/platform_data/i2c-ocores.h>
49 void (*setreg)(struct ocores_i2c *i2c, int reg, u8 value);
50 u8 (*getreg)(struct ocores_i2c *i2c, int reg);
90 static void oc_setreg_8(struct ocores_i2c *i2c, int reg, u8 value) in oc_setreg_8() argument
92 iowrite8(value, i2c->base + (reg << i2c->reg_shift)); in oc_setreg_8()
95 static void oc_setreg_16(struct ocores_i2c *i2c, int reg, u8 value) in oc_setreg_16() argument
97 iowrite16(value, i2c->base + (reg << i2c->reg_shift)); in oc_setreg_16()
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Di2c-zx2967.c10 #include <linux/i2c.h>
53 #define DEV(i2c) ((i2c)->adap.dev.parent) argument
69 static void zx2967_i2c_writel(struct zx2967_i2c *i2c, in zx2967_i2c_writel() argument
72 writel_relaxed(val, i2c->reg_base + reg); in zx2967_i2c_writel()
75 static u32 zx2967_i2c_readl(struct zx2967_i2c *i2c, unsigned long reg) in zx2967_i2c_readl() argument
77 return readl_relaxed(i2c->reg_base + reg); in zx2967_i2c_readl()
80 static void zx2967_i2c_writesb(struct zx2967_i2c *i2c, in zx2967_i2c_writesb() argument
83 writesb(i2c->reg_base + reg, data, len); in zx2967_i2c_writesb()
86 static void zx2967_i2c_readsb(struct zx2967_i2c *i2c, in zx2967_i2c_readsb() argument
89 readsb(i2c->reg_base + reg, data, len); in zx2967_i2c_readsb()
[all …]
Di2c-meson.c3 * I2C bus driver for Amlogic Meson SoCs
10 #include <linux/i2c.h>
20 /* Meson I2C register map */
63 * struct meson_i2c - Meson I2C device private data
65 * @adap: I2C adapter instance
69 * @msg: Pointer to the current I2C message
102 static void meson_i2c_set_mask(struct meson_i2c *i2c, int reg, u32 mask, in meson_i2c_set_mask() argument
107 data = readl(i2c->regs + reg); in meson_i2c_set_mask()
110 writel(data, i2c->regs + reg); in meson_i2c_set_mask()
113 static void meson_i2c_reset_tokens(struct meson_i2c *i2c) in meson_i2c_reset_tokens() argument
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Di2c-s3c2410.c2 /* linux/drivers/i2c/busses/i2c-s3c2410.c
7 * S3C2410 I2C Controller
13 #include <linux/i2c.h>
34 #include <linux/platform_data/i2c-s3c2410.h>
86 /* i2c controller state */
127 .name = "s3c2410-i2c",
130 .name = "s3c2440-i2c",
133 .name = "s3c2440-hdmiphy-i2c",
139 static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat);
143 { .compatible = "samsung,s3c2410-i2c", .data = (void *)0 },
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Di2c-xiic.c3 * i2c-xiic.c
24 #include <linux/i2c.h>
27 #include <linux/platform_data/i2c-xiic.h>
34 #define DRIVER_NAME "xiic-i2c"
48 * struct xiic_i2c - Internal representation of the XIIC I2C bus
164 #define xiic_tx_space(i2c) ((i2c)->tx_msg->len - (i2c)->tx_pos) argument
165 #define xiic_rx_space(i2c) ((i2c)->rx_msg->len - (i2c)->rx_pos) argument
167 static void xiic_start_xfer(struct xiic_i2c *i2c);
168 static void __xiic_start_xfer(struct xiic_i2c *i2c);
178 static inline void xiic_setreg8(struct xiic_i2c *i2c, int reg, u8 value) in xiic_setreg8() argument
[all …]
Di2c-lpc2k.c5 * Code portions referenced from the i2x-pxa and i2c-pnx drivers
17 #include <linux/i2c.h>
47 /* I2C SCL clock has different duty cycle depending on mode */
53 * 26 possible I2C status codes, but codes applicable only
84 static void i2c_lpc2k_reset(struct lpc2k_i2c *i2c) in i2c_lpc2k_reset() argument
87 writel(LPC24XX_CLEAR_ALL, i2c->base + LPC24XX_I2CONCLR); in i2c_lpc2k_reset()
88 writel(0, i2c->base + LPC24XX_I2ADDR); in i2c_lpc2k_reset()
89 writel(LPC24XX_I2EN, i2c->base + LPC24XX_I2CONSET); in i2c_lpc2k_reset()
92 static int i2c_lpc2k_clear_arb(struct lpc2k_i2c *i2c) in i2c_lpc2k_clear_arb() argument
100 writel(LPC24XX_STO, i2c->base + LPC24XX_I2CONSET); in i2c_lpc2k_clear_arb()
[all …]
Di2c-mt65xx.c14 #include <linux/i2c.h>
76 #define I2C_DRV_NAME "i2c-mt65xx"
198 struct i2c_adapter adap; /* i2c host adapter */
202 /* set in i2c probe */
203 void __iomem *base; /* i2c base addr */
205 struct clk *clk_main; /* main clock for i2c bus */
206 struct clk *clk_dma; /* DMA clock for i2c via DMA */
207 struct clk *clk_pmic; /* PMIC clock for i2c from PMIC */
208 struct clk *clk_arb; /* Arbitrator clock for i2c */
209 bool have_pmic; /* can use i2c pins from PMIC */
[all …]
Di2c-synquacer.c12 #include <linux/i2c.h>
25 /* I2C register address definitions */
35 /* I2C register bit definitions */
113 /* min I2C clock frequency 14M */
115 /* max I2C clock frequency 200M */
117 /* I2C clock frequency 18M */
149 static inline int is_lastmsg(struct synquacer_i2c *i2c) in is_lastmsg() argument
151 return i2c->msg_idx >= (i2c->msg_num - 1); in is_lastmsg()
154 static inline int is_msglast(struct synquacer_i2c *i2c) in is_msglast() argument
156 return i2c->msg_ptr == (i2c->msg->len - 1); in is_msglast()
[all …]
Di2c-jz4780.c3 * Ingenic JZ4780 I2C bus driver
14 #include <linux/i2c.h>
170 static inline unsigned short jz4780_i2c_readw(struct jz4780_i2c *i2c, in jz4780_i2c_readw() argument
173 return readw(i2c->iomem + offset); in jz4780_i2c_readw()
176 static inline void jz4780_i2c_writew(struct jz4780_i2c *i2c, in jz4780_i2c_writew() argument
179 writew(val, i2c->iomem + offset); in jz4780_i2c_writew()
182 static int jz4780_i2c_disable(struct jz4780_i2c *i2c) in jz4780_i2c_disable() argument
187 jz4780_i2c_writew(i2c, JZ4780_I2C_ENB, 0); in jz4780_i2c_disable()
190 regval = jz4780_i2c_readw(i2c, JZ4780_I2C_ENSTA); in jz4780_i2c_disable()
197 dev_err(&i2c->adap.dev, "disable failed: ENSTA=0x%04x\n", regval); in jz4780_i2c_disable()
[all …]
Di2c-img-scb.c3 * I2C adapter for the IMG Serial Control Bus (SCB) IP block.
7 * There are three ways that this I2C controller can be driven:
15 * - Atomic commands. A low level I2C symbol (such as generate
20 * This mode of operation is used by MODE_ATOMIC, which uses an I2C
21 * state machine in the interrupt handler to compose/react to I2C
26 * in suboptimal use of the bus, with gaps between the I2C symbols while
30 * specified, and the hardware takes care of the I2C state machine,
31 * using a FIFO to send/receive bytes of data to an I2C slave. The
36 * with control of repeated start bits between I2C messages.
40 * no wasted time between I2C symbols or I2C messages.
[all …]
Di2c-exynos5.c3 * i2c-exynos5.c - Samsung Exynos5 I2C Controller Driver
11 #include <linux/i2c.h>
207 /* Version of HS-I2C Hardware */
214 * @hw: the hardware variant of Exynos I2C controller
257 static void exynos5_i2c_clr_pend_irq(struct exynos5_i2c *i2c) in exynos5_i2c_clr_pend_irq() argument
259 writel(readl(i2c->regs + HSI2C_INT_STATUS), in exynos5_i2c_clr_pend_irq()
260 i2c->regs + HSI2C_INT_STATUS); in exynos5_i2c_clr_pend_irq()
270 static int exynos5_i2c_set_timing(struct exynos5_i2c *i2c, bool hs_timings) in exynos5_i2c_set_timing() argument
282 unsigned int clkin = clk_get_rate(i2c->clk); in exynos5_i2c_set_timing()
283 unsigned int op_clk = hs_timings ? i2c->op_clock : in exynos5_i2c_set_timing()
[all …]
Di2c-thunderx-pcidrv.c2 * Cavium ThunderX i2c driver.
16 #include <linux/i2c.h>
17 #include <linux/i2c-smbus.h>
24 #include "i2c-octeon-core.h"
26 #define DRV_NAME "i2c-thunderx"
40 static void thunder_i2c_int_enable(struct octeon_i2c *i2c) in thunder_i2c_int_enable() argument
43 i2c->twsi_base + TWSI_INT_ENA_W1S); in thunder_i2c_int_enable()
49 static void thunder_i2c_int_disable(struct octeon_i2c *i2c) in thunder_i2c_int_disable() argument
52 i2c->twsi_base + TWSI_INT_ENA_W1C); in thunder_i2c_int_disable()
55 static void thunder_i2c_hlc_int_enable(struct octeon_i2c *i2c) in thunder_i2c_hlc_int_enable() argument
[all …]
DKconfig6 menu "I2C Hardware Bus support"
22 will be called i2c-ali1535.
34 will be called i2c-ali1563.
41 Acer Labs Inc. (ALI) M1514 and M1543 motherboard I2C interfaces.
44 will be called i2c-ali15x3.
51 756/766/768 mainboard I2C interfaces. The driver also includes
52 support for the first (SMBus 1.0) I2C interface of the AMD 8111 and
53 the nVidia nForce I2C interface.
56 will be called i2c-amd756.
69 will be called i2c-amd756-s4882.
[all …]
Di2c-pca-platform.c5 * Platform driver for the PCA9564 I2C controller.
17 #include <linux/i2c.h>
20 #include <linux/i2c-algo-pca.h>
21 #include <linux/platform_data/i2c-pca-platform.h>
44 struct i2c_pca_pf_data *i2c = pd; in i2c_pca_pf_readbyte8() local
45 return ioread8(i2c->reg_base + reg); in i2c_pca_pf_readbyte8()
50 struct i2c_pca_pf_data *i2c = pd; in i2c_pca_pf_readbyte16() local
51 return ioread8(i2c->reg_base + reg * 2); in i2c_pca_pf_readbyte16()
56 struct i2c_pca_pf_data *i2c = pd; in i2c_pca_pf_readbyte32() local
57 return ioread8(i2c->reg_base + reg * 4); in i2c_pca_pf_readbyte32()
[all …]
Di2c-octeon-platdrv.c7 * This is a driver for the i2c adapter in Cavium Networks' OCTEON processors.
16 #include <linux/i2c.h>
27 #include "i2c-octeon-core.h"
29 #define DRV_NAME "i2c-octeon"
33 * @i2c: The struct octeon_i2c
38 static void octeon_i2c_int_enable(struct octeon_i2c *i2c) in octeon_i2c_int_enable() argument
40 octeon_i2c_write_int(i2c, TWSI_INT_CORE_EN); in octeon_i2c_int_enable()
44 static void octeon_i2c_int_disable(struct octeon_i2c *i2c) in octeon_i2c_int_disable() argument
47 octeon_i2c_write_int(i2c, 0); in octeon_i2c_int_disable()
52 * @i2c: The struct octeon_i2c
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Di2c-octeon-core.c7 * This file contains the shared part of the driver for the i2c adapter in
16 #include <linux/i2c.h>
21 #include "i2c-octeon-core.h"
26 struct octeon_i2c *i2c = dev_id; in octeon_i2c_isr() local
28 i2c->int_disable(i2c); in octeon_i2c_isr()
29 wake_up(&i2c->queue); in octeon_i2c_isr()
34 static bool octeon_i2c_test_iflg(struct octeon_i2c *i2c) in octeon_i2c_test_iflg() argument
36 return (octeon_i2c_ctl_read(i2c) & TWSI_CTL_IFLG); in octeon_i2c_test_iflg()
41 * @i2c: The struct octeon_i2c
45 static int octeon_i2c_wait(struct octeon_i2c *i2c) in octeon_i2c_wait() argument
[all …]
Di2c-rk3x.c3 * Driver for I2C adapter in Rockchip RK3xxx SoC
11 #include <linux/i2c.h>
162 * @grf_offset: offset inside the grf regmap for setting the i2c type
163 * @calc_timings: Callback function for i2c timing information calculated
173 * @adap: corresponding I2C adapter
179 * @clk_rate_nb: i2c clk rate change notify
180 * @t: I2C known timing information
181 * @lock: spinlock for the i2c bus
182 * @wait: the waitqueue to wait for i2c transfer
184 * @msg: current i2c message
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Di2c-kempld.c3 * I2C bus driver for Kontron COM modules
8 * The driver is based on the i2c-ocores driver by Peter Korsgaard.
13 #include <linux/i2c.h>
68 MODULE_PARM_DESC(bus_frequency, "Set I2C bus frequency in kHz (default="
73 MODULE_PARM_DESC(i2c_bus, "Set I2C bus number (default=-1 for dynamic assignment)");
77 MODULE_PARM_DESC(i2c_gpio_mux, "Enable I2C port on GPIO out (default=false)");
82 static int kempld_i2c_process(struct kempld_i2c_data *i2c) in kempld_i2c_process() argument
84 struct kempld_device_data *pld = i2c->pld; in kempld_i2c_process()
86 struct i2c_msg *msg = i2c->msg; in kempld_i2c_process()
93 if (i2c->state == STATE_DONE || i2c->state == STATE_ERROR) { in kempld_i2c_process()
[all …]
Di2c-mt7621.c3 * drivers/i2c/busses/i2c-mt7621.c
9 * Improve driver for i2cdetect from i2c-tools to detect i2c devices on the bus.
15 #include <linux/i2c.h>
56 /* timeout waiting for I2C devices to respond */
69 static int mtk_i2c_wait_idle(struct mtk_i2c *i2c) in mtk_i2c_wait_idle() argument
74 ret = readl_relaxed_poll_timeout(i2c->base + REG_SM0CTL1_REG, in mtk_i2c_wait_idle()
78 dev_dbg(i2c->dev, "idle err(%d)\n", ret); in mtk_i2c_wait_idle()
83 static void mtk_i2c_reset(struct mtk_i2c *i2c) in mtk_i2c_reset() argument
87 ret = device_reset(i2c->adap.dev.parent); in mtk_i2c_reset()
89 dev_err(i2c->dev, "I2C reset failed!\n"); in mtk_i2c_reset()
[all …]
/Linux-v5.4/sound/soc/codecs/
DKconfig2 # Helper to resolve issues with configs that have SPI enabled but I2C
3 # modular, meaning we can't build the codec driver in with I2C support.
8 default m if I2C=m
9 default y if I2C=y
23 select SND_SOC_AD193X_I2C if I2C
26 select SND_SOC_ADAU1373 if I2C
27 select SND_SOC_ADAU1761_I2C if I2C
29 select SND_SOC_ADAU1781_I2C if I2C
32 select SND_SOC_ADAV803 if I2C
34 select SND_SOC_ADAU1977_I2C if I2C
[all …]
/Linux-v5.4/drivers/media/pci/netup_unidvb/
Dnetup_unidvb_i2c.c5 * Internal I2C bus driver for NetUP Universal Dual DVB-CI
65 irqreturn_t netup_i2c_interrupt(struct netup_i2c *i2c) in netup_i2c_interrupt() argument
71 spin_lock_irqsave(&i2c->lock, flags); in netup_i2c_interrupt()
72 reg = readw(&i2c->regs->twi_ctrl0_stat); in netup_i2c_interrupt()
73 writew(reg & ~TWI_IRQEN, &i2c->regs->twi_ctrl0_stat); in netup_i2c_interrupt()
74 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
77 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
79 i2c->state = STATE_DONE; in netup_i2c_interrupt()
83 dev_dbg(i2c->adap.dev.parent, in netup_i2c_interrupt()
85 i2c->state = STATE_ERROR; in netup_i2c_interrupt()
[all …]
/Linux-v5.4/drivers/i2c/
DKconfig3 # I2C subsystem configuration
6 menu "I2C support"
8 config I2C config
9 tristate "I2C support"
13 I2C (pronounce: I-squared-C) is a slow serial bus protocol used in
15 or System Management Bus is a subset of the I2C protocol. More
16 information is contained in the directory <file:Documentation/i2c/>,
19 Both I2C and SMBus are supported here. You will need this for
22 If you want I2C support, you should say Y here and also to the
25 This I2C support can also be built as a module. If so, the module
[all …]

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